./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-file-item-subst.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-file-item-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be2a0d1eee532c8ad9f827ec91fa18dbacb100bdaebd8afe9a7f9b56098458ea --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:04:07,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:04:07,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:04:07,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:04:07,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:04:07,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:04:07,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:04:07,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:04:07,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:04:07,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:04:07,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:04:07,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:04:07,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:04:07,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:04:07,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:04:07,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:04:07,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:04:07,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:04:07,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:04:07,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:04:07,889 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:04:07,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:04:07,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:04:07,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:04:07,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:04:07,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:04:07,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:04:07,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:04:07,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:04:07,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:04:07,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:04:07,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:04:07,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:04:07,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:04:07,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:04:07,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:04:07,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:04:07,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:04:07,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:04:07,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:04:07,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:04:07,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:04:07,912 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:04:07,935 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:04:07,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:04:07,936 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:04:07,936 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:04:07,936 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:04:07,936 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:04:07,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:04:07,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:04:07,937 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:04:07,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:04:07,938 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:04:07,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:04:07,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:04:07,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:04:07,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:04:07,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:04:07,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:04:07,939 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:04:07,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:04:07,939 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:04:07,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:04:07,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:04:07,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:04:07,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:04:07,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:04:07,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:04:07,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:04:07,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:04:07,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:04:07,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:04:07,941 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:04:07,941 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:04:07,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:04:07,941 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be2a0d1eee532c8ad9f827ec91fa18dbacb100bdaebd8afe9a7f9b56098458ea [2022-07-13 22:04:08,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:04:08,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:04:08,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:04:08,135 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:04:08,136 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:04:08,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2022-07-13 22:04:08,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f3cf8411/8aa06d9f4c5e43c1bdb9bf5621141fa8/FLAG1ed6215b6 [2022-07-13 22:04:08,522 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:04:08,522 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2022-07-13 22:04:08,527 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f3cf8411/8aa06d9f4c5e43c1bdb9bf5621141fa8/FLAG1ed6215b6 [2022-07-13 22:04:08,969 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f3cf8411/8aa06d9f4c5e43c1bdb9bf5621141fa8 [2022-07-13 22:04:08,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:04:08,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:04:08,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:04:08,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:04:08,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:04:08,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:04:08" (1/1) ... [2022-07-13 22:04:08,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2013f3c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:08, skipping insertion in model container [2022-07-13 22:04:08,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:04:08" (1/1) ... [2022-07-13 22:04:08,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:04:09,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:04:09,131 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-file-item-subst.wvr.c[3015,3028] [2022-07-13 22:04:09,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:04:09,149 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:04:09,172 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-file-item-subst.wvr.c[3015,3028] [2022-07-13 22:04:09,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:04:09,184 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:04:09,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:09 WrapperNode [2022-07-13 22:04:09,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:04:09,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:04:09,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:04:09,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:04:09,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:09" (1/1) ... [2022-07-13 22:04:09,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:09" (1/1) ... [2022-07-13 22:04:09,233 INFO L137 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 221 [2022-07-13 22:04:09,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:04:09,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:04:09,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:04:09,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:04:09,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:09" (1/1) ... [2022-07-13 22:04:09,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:09" (1/1) ... [2022-07-13 22:04:09,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:09" (1/1) ... [2022-07-13 22:04:09,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:09" (1/1) ... [2022-07-13 22:04:09,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:09" (1/1) ... [2022-07-13 22:04:09,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:09" (1/1) ... [2022-07-13 22:04:09,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:09" (1/1) ... [2022-07-13 22:04:09,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:04:09,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:04:09,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:04:09,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:04:09,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:09" (1/1) ... [2022-07-13 22:04:09,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:04:09,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:04:09,325 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 22:04:09,333 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 22:04:09,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:04:09,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:04:09,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:04:09,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:04:09,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:04:09,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-13 22:04:09,360 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-13 22:04:09,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:04:09,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:04:09,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:04:09,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:04:09,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:04:09,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:04:09,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:04:09,364 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 22:04:09,427 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:04:09,428 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:04:09,734 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:04:09,741 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:04:09,747 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 22:04:09,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:04:09 BoogieIcfgContainer [2022-07-13 22:04:09,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:04:09,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:04:09,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:04:09,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:04:09,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:04:08" (1/3) ... [2022-07-13 22:04:09,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426dc4e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:04:09, skipping insertion in model container [2022-07-13 22:04:09,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:09" (2/3) ... [2022-07-13 22:04:09,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426dc4e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:04:09, skipping insertion in model container [2022-07-13 22:04:09,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:04:09" (3/3) ... [2022-07-13 22:04:09,757 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-file-item-subst.wvr.c [2022-07-13 22:04:09,764 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:04:09,770 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:04:09,770 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:04:09,771 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:04:09,832 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-13 22:04:09,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 270 places, 286 transitions, 596 flow [2022-07-13 22:04:09,951 INFO L129 PetriNetUnfolder]: 26/283 cut-off events. [2022-07-13 22:04:09,952 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:04:09,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 283 events. 26/283 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 744 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 199. Up to 2 conditions per place. [2022-07-13 22:04:09,958 INFO L82 GeneralOperation]: Start removeDead. Operand has 270 places, 286 transitions, 596 flow [2022-07-13 22:04:09,965 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 272 transitions, 562 flow [2022-07-13 22:04:09,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:04:09,976 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@17f3837b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@f133d21 [2022-07-13 22:04:09,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 22:04:10,027 INFO L129 PetriNetUnfolder]: 26/271 cut-off events. [2022-07-13 22:04:10,027 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:04:10,027 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:10,028 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:10,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:10,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:10,032 INFO L85 PathProgramCache]: Analyzing trace with hash -311524549, now seen corresponding path program 1 times [2022-07-13 22:04:10,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:10,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800028185] [2022-07-13 22:04:10,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:10,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:10,271 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 22:04:10,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:10,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800028185] [2022-07-13 22:04:10,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800028185] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:10,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:10,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:10,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055490593] [2022-07-13 22:04:10,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:10,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:10,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:10,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:10,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:10,314 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 286 [2022-07-13 22:04:10,319 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 272 transitions, 562 flow. Second operand has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states 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 22:04:10,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:10,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 286 [2022-07-13 22:04:10,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:10,487 INFO L129 PetriNetUnfolder]: 74/833 cut-off events. [2022-07-13 22:04:10,487 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-07-13 22:04:10,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 833 events. 74/833 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5322 event pairs, 8 based on Foata normal form. 39/777 useless extension candidates. Maximal degree in co-relation 739. Up to 33 conditions per place. [2022-07-13 22:04:10,500 INFO L132 encePairwiseOnDemand]: 270/286 looper letters, 17 selfloop transitions, 5 changer transitions 2/272 dead transitions. [2022-07-13 22:04:10,500 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 272 transitions, 621 flow [2022-07-13 22:04:10,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:10,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:10,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 826 transitions. [2022-07-13 22:04:10,516 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9627039627039627 [2022-07-13 22:04:10,517 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 826 transitions. [2022-07-13 22:04:10,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 826 transitions. [2022-07-13 22:04:10,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:10,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 826 transitions. [2022-07-13 22:04:10,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states 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 22:04:10,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:04:10,540 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:04:10,542 INFO L186 Difference]: Start difference. First operand has 256 places, 272 transitions, 562 flow. Second operand 3 states and 826 transitions. [2022-07-13 22:04:10,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 272 transitions, 621 flow [2022-07-13 22:04:10,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 272 transitions, 599 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-13 22:04:10,554 INFO L242 Difference]: Finished difference. Result has 254 places, 265 transitions, 568 flow [2022-07-13 22:04:10,556 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=568, PETRI_PLACES=254, PETRI_TRANSITIONS=265} [2022-07-13 22:04:10,559 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, -2 predicate places. [2022-07-13 22:04:10,559 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 265 transitions, 568 flow [2022-07-13 22:04:10,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states 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 22:04:10,560 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:10,560 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:10,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:04:10,561 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:10,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:10,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1177739013, now seen corresponding path program 1 times [2022-07-13 22:04:10,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:10,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849282021] [2022-07-13 22:04:10,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:10,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:10,639 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 22:04:10,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:10,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849282021] [2022-07-13 22:04:10,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849282021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:10,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:10,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:10,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385715559] [2022-07-13 22:04:10,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:10,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:10,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:10,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:10,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:10,643 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 286 [2022-07-13 22:04:10,644 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 265 transitions, 568 flow. Second operand has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states 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 22:04:10,644 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:10,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 286 [2022-07-13 22:04:10,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:10,750 INFO L129 PetriNetUnfolder]: 72/833 cut-off events. [2022-07-13 22:04:10,751 INFO L130 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2022-07-13 22:04:10,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 934 conditions, 833 events. 72/833 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4888 event pairs, 8 based on Foata normal form. 6/755 useless extension candidates. Maximal degree in co-relation 400. Up to 28 conditions per place. [2022-07-13 22:04:10,761 INFO L132 encePairwiseOnDemand]: 280/286 looper letters, 22 selfloop transitions, 3 changer transitions 0/273 dead transitions. [2022-07-13 22:04:10,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 273 transitions, 645 flow [2022-07-13 22:04:10,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:10,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:10,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 814 transitions. [2022-07-13 22:04:10,772 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2022-07-13 22:04:10,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 814 transitions. [2022-07-13 22:04:10,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 814 transitions. [2022-07-13 22:04:10,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:10,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 814 transitions. [2022-07-13 22:04:10,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 0 states have call successors, (0), 0 states 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 22:04:10,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:04:10,776 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:04:10,776 INFO L186 Difference]: Start difference. First operand has 254 places, 265 transitions, 568 flow. Second operand 3 states and 814 transitions. [2022-07-13 22:04:10,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 273 transitions, 645 flow [2022-07-13 22:04:10,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 273 transitions, 635 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:10,782 INFO L242 Difference]: Finished difference. Result has 254 places, 268 transitions, 594 flow [2022-07-13 22:04:10,783 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=594, PETRI_PLACES=254, PETRI_TRANSITIONS=268} [2022-07-13 22:04:10,784 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, -2 predicate places. [2022-07-13 22:04:10,784 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 268 transitions, 594 flow [2022-07-13 22:04:10,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states 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 22:04:10,785 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:10,785 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:10,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:04:10,786 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:10,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:10,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1142741541, now seen corresponding path program 1 times [2022-07-13 22:04:10,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:10,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237270769] [2022-07-13 22:04:10,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:10,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:10,991 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 22:04:10,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:10,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237270769] [2022-07-13 22:04:10,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237270769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:10,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:10,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:10,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965181302] [2022-07-13 22:04:10,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:10,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:10,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:10,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:10,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:10,998 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:04:11,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 268 transitions, 594 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:11,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:11,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:04:11,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:11,510 INFO L129 PetriNetUnfolder]: 826/2767 cut-off events. [2022-07-13 22:04:11,511 INFO L130 PetriNetUnfolder]: For 221/261 co-relation queries the response was YES. [2022-07-13 22:04:11,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4290 conditions, 2767 events. 826/2767 cut-off events. For 221/261 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 24968 event pairs, 152 based on Foata normal form. 1/2644 useless extension candidates. Maximal degree in co-relation 1853. Up to 336 conditions per place. [2022-07-13 22:04:11,532 INFO L132 encePairwiseOnDemand]: 271/286 looper letters, 79 selfloop transitions, 37 changer transitions 14/368 dead transitions. [2022-07-13 22:04:11,532 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 368 transitions, 1075 flow [2022-07-13 22:04:11,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:04:11,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:04:11,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4051 transitions. [2022-07-13 22:04:11,538 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8852709790209791 [2022-07-13 22:04:11,538 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4051 transitions. [2022-07-13 22:04:11,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4051 transitions. [2022-07-13 22:04:11,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:11,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4051 transitions. [2022-07-13 22:04:11,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 253.1875) internal successors, (4051), 16 states have internal predecessors, (4051), 0 states have call successors, (0), 0 states 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 22:04:11,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states 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 22:04:11,555 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states 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 22:04:11,555 INFO L186 Difference]: Start difference. First operand has 254 places, 268 transitions, 594 flow. Second operand 16 states and 4051 transitions. [2022-07-13 22:04:11,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 368 transitions, 1075 flow [2022-07-13 22:04:11,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 368 transitions, 1066 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-07-13 22:04:11,561 INFO L242 Difference]: Finished difference. Result has 281 places, 302 transitions, 845 flow [2022-07-13 22:04:11,562 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=845, PETRI_PLACES=281, PETRI_TRANSITIONS=302} [2022-07-13 22:04:11,564 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 25 predicate places. [2022-07-13 22:04:11,564 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 302 transitions, 845 flow [2022-07-13 22:04:11,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:11,566 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:11,566 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:11,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:04:11,566 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:11,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:11,567 INFO L85 PathProgramCache]: Analyzing trace with hash -193750373, now seen corresponding path program 1 times [2022-07-13 22:04:11,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:11,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220231701] [2022-07-13 22:04:11,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:11,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:11,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:11,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:11,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220231701] [2022-07-13 22:04:11,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220231701] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:11,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:11,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:04:11,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11255713] [2022-07-13 22:04:11,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:11,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:04:11,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:11,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:04:11,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:04:11,687 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 286 [2022-07-13 22:04:11,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 302 transitions, 845 flow. Second operand has 7 states, 7 states have (on average 255.85714285714286) internal successors, (1791), 7 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states 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 22:04:11,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:11,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 286 [2022-07-13 22:04:11,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:12,012 INFO L129 PetriNetUnfolder]: 303/2359 cut-off events. [2022-07-13 22:04:12,013 INFO L130 PetriNetUnfolder]: For 1325/1560 co-relation queries the response was YES. [2022-07-13 22:04:12,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4121 conditions, 2359 events. 303/2359 cut-off events. For 1325/1560 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 23176 event pairs, 83 based on Foata normal form. 20/2205 useless extension candidates. Maximal degree in co-relation 4083. Up to 161 conditions per place. [2022-07-13 22:04:12,034 INFO L132 encePairwiseOnDemand]: 278/286 looper letters, 21 selfloop transitions, 1 changer transitions 20/322 dead transitions. [2022-07-13 22:04:12,035 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 322 transitions, 982 flow [2022-07-13 22:04:12,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:04:12,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:04:12,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2320 transitions. [2022-07-13 22:04:12,038 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9013209013209014 [2022-07-13 22:04:12,038 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2320 transitions. [2022-07-13 22:04:12,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2320 transitions. [2022-07-13 22:04:12,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:12,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2320 transitions. [2022-07-13 22:04:12,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 257.77777777777777) internal successors, (2320), 9 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states 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 22:04:12,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 286.0) internal successors, (2860), 10 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states 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 22:04:12,046 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 286.0) internal successors, (2860), 10 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states 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 22:04:12,046 INFO L186 Difference]: Start difference. First operand has 281 places, 302 transitions, 845 flow. Second operand 9 states and 2320 transitions. [2022-07-13 22:04:12,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 322 transitions, 982 flow [2022-07-13 22:04:12,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 322 transitions, 978 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:12,060 INFO L242 Difference]: Finished difference. Result has 292 places, 302 transitions, 858 flow [2022-07-13 22:04:12,060 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=858, PETRI_PLACES=292, PETRI_TRANSITIONS=302} [2022-07-13 22:04:12,061 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 36 predicate places. [2022-07-13 22:04:12,061 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 302 transitions, 858 flow [2022-07-13 22:04:12,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 255.85714285714286) internal successors, (1791), 7 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states 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 22:04:12,062 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:12,062 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:12,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:04:12,063 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:12,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:12,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1131960393, now seen corresponding path program 1 times [2022-07-13 22:04:12,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:12,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583691174] [2022-07-13 22:04:12,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:12,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:12,092 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 22:04:12,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:12,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583691174] [2022-07-13 22:04:12,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583691174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:12,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:12,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:12,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125283871] [2022-07-13 22:04:12,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:12,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:12,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:12,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:12,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:12,095 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 286 [2022-07-13 22:04:12,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 302 transitions, 858 flow. Second operand has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states 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 22:04:12,096 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:12,096 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 286 [2022-07-13 22:04:12,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:12,679 INFO L129 PetriNetUnfolder]: 506/4206 cut-off events. [2022-07-13 22:04:12,680 INFO L130 PetriNetUnfolder]: For 2284/2425 co-relation queries the response was YES. [2022-07-13 22:04:12,701 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7194 conditions, 4206 events. 506/4206 cut-off events. For 2284/2425 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 44929 event pairs, 111 based on Foata normal form. 51/3953 useless extension candidates. Maximal degree in co-relation 7168. Up to 305 conditions per place. [2022-07-13 22:04:12,712 INFO L132 encePairwiseOnDemand]: 276/286 looper letters, 18 selfloop transitions, 6 changer transitions 0/310 dead transitions. [2022-07-13 22:04:12,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 310 transitions, 926 flow [2022-07-13 22:04:12,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:12,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:12,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 811 transitions. [2022-07-13 22:04:12,715 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9452214452214452 [2022-07-13 22:04:12,715 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 811 transitions. [2022-07-13 22:04:12,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 811 transitions. [2022-07-13 22:04:12,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:12,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 811 transitions. [2022-07-13 22:04:12,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states 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 22:04:12,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:04:12,718 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:04:12,718 INFO L186 Difference]: Start difference. First operand has 292 places, 302 transitions, 858 flow. Second operand 3 states and 811 transitions. [2022-07-13 22:04:12,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 310 transitions, 926 flow [2022-07-13 22:04:12,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 310 transitions, 913 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-07-13 22:04:12,737 INFO L242 Difference]: Finished difference. Result has 283 places, 306 transitions, 893 flow [2022-07-13 22:04:12,737 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=893, PETRI_PLACES=283, PETRI_TRANSITIONS=306} [2022-07-13 22:04:12,739 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 27 predicate places. [2022-07-13 22:04:12,739 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 306 transitions, 893 flow [2022-07-13 22:04:12,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states 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 22:04:12,740 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:12,740 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:12,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:04:12,740 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:12,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:12,741 INFO L85 PathProgramCache]: Analyzing trace with hash 393859959, now seen corresponding path program 2 times [2022-07-13 22:04:12,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:12,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223903407] [2022-07-13 22:04:12,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:12,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:12,786 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 22:04:12,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:12,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223903407] [2022-07-13 22:04:12,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223903407] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:12,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:12,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:12,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078942523] [2022-07-13 22:04:12,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:12,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:12,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:12,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:12,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:12,791 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 286 [2022-07-13 22:04:12,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 306 transitions, 893 flow. Second operand has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states 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 22:04:12,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:12,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 286 [2022-07-13 22:04:12,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:13,038 INFO L129 PetriNetUnfolder]: 300/2558 cut-off events. [2022-07-13 22:04:13,039 INFO L130 PetriNetUnfolder]: For 1400/1564 co-relation queries the response was YES. [2022-07-13 22:04:13,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4460 conditions, 2558 events. 300/2558 cut-off events. For 1400/1564 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 23974 event pairs, 69 based on Foata normal form. 49/2440 useless extension candidates. Maximal degree in co-relation 3766. Up to 173 conditions per place. [2022-07-13 22:04:13,061 INFO L132 encePairwiseOnDemand]: 278/286 looper letters, 24 selfloop transitions, 4 changer transitions 0/314 dead transitions. [2022-07-13 22:04:13,062 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 314 transitions, 977 flow [2022-07-13 22:04:13,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:13,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:13,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 811 transitions. [2022-07-13 22:04:13,090 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9452214452214452 [2022-07-13 22:04:13,090 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 811 transitions. [2022-07-13 22:04:13,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 811 transitions. [2022-07-13 22:04:13,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:13,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 811 transitions. [2022-07-13 22:04:13,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states 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 22:04:13,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:04:13,093 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:04:13,093 INFO L186 Difference]: Start difference. First operand has 283 places, 306 transitions, 893 flow. Second operand 3 states and 811 transitions. [2022-07-13 22:04:13,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 314 transitions, 977 flow [2022-07-13 22:04:13,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 314 transitions, 965 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:13,106 INFO L242 Difference]: Finished difference. Result has 285 places, 310 transitions, 929 flow [2022-07-13 22:04:13,106 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=929, PETRI_PLACES=285, PETRI_TRANSITIONS=310} [2022-07-13 22:04:13,107 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 29 predicate places. [2022-07-13 22:04:13,107 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 310 transitions, 929 flow [2022-07-13 22:04:13,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states 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 22:04:13,107 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:13,108 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:13,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:04:13,108 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:13,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:13,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1181364599, now seen corresponding path program 1 times [2022-07-13 22:04:13,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:13,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968326598] [2022-07-13 22:04:13,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:13,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:13,216 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 22:04:13,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:13,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968326598] [2022-07-13 22:04:13,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968326598] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:13,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:13,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:13,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457204175] [2022-07-13 22:04:13,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:13,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:13,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:13,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:13,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:13,221 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:04:13,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 310 transitions, 929 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:13,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:13,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:04:13,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:13,936 INFO L129 PetriNetUnfolder]: 1089/4618 cut-off events. [2022-07-13 22:04:13,936 INFO L130 PetriNetUnfolder]: For 3676/3858 co-relation queries the response was YES. [2022-07-13 22:04:13,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10273 conditions, 4618 events. 1089/4618 cut-off events. For 3676/3858 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 51003 event pairs, 512 based on Foata normal form. 3/4401 useless extension candidates. Maximal degree in co-relation 8434. Up to 1532 conditions per place. [2022-07-13 22:04:13,975 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 109 selfloop transitions, 31 changer transitions 28/414 dead transitions. [2022-07-13 22:04:13,975 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 414 transitions, 1728 flow [2022-07-13 22:04:13,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:04:13,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 22:04:13,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6015 transitions. [2022-07-13 22:04:13,983 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8763111888111889 [2022-07-13 22:04:13,983 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6015 transitions. [2022-07-13 22:04:13,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6015 transitions. [2022-07-13 22:04:13,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:13,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6015 transitions. [2022-07-13 22:04:13,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 250.625) internal successors, (6015), 24 states have internal predecessors, (6015), 0 states have call successors, (0), 0 states 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 22:04:14,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states 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 22:04:14,002 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states 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 22:04:14,002 INFO L186 Difference]: Start difference. First operand has 285 places, 310 transitions, 929 flow. Second operand 24 states and 6015 transitions. [2022-07-13 22:04:14,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 414 transitions, 1728 flow [2022-07-13 22:04:14,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 414 transitions, 1716 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-07-13 22:04:14,026 INFO L242 Difference]: Finished difference. Result has 326 places, 339 transitions, 1237 flow [2022-07-13 22:04:14,027 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1237, PETRI_PLACES=326, PETRI_TRANSITIONS=339} [2022-07-13 22:04:14,027 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 70 predicate places. [2022-07-13 22:04:14,027 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 339 transitions, 1237 flow [2022-07-13 22:04:14,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:14,028 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:14,029 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:14,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:04:14,029 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:14,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:14,029 INFO L85 PathProgramCache]: Analyzing trace with hash 732473581, now seen corresponding path program 2 times [2022-07-13 22:04:14,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:14,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691408056] [2022-07-13 22:04:14,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:14,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:14,112 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 22:04:14,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:14,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691408056] [2022-07-13 22:04:14,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691408056] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:14,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:14,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:14,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87007588] [2022-07-13 22:04:14,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:14,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:14,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:14,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:14,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:14,116 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:04:14,118 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 339 transitions, 1237 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:14,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:14,118 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:04:14,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:14,908 INFO L129 PetriNetUnfolder]: 1156/4930 cut-off events. [2022-07-13 22:04:14,908 INFO L130 PetriNetUnfolder]: For 12704/12846 co-relation queries the response was YES. [2022-07-13 22:04:14,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13693 conditions, 4930 events. 1156/4930 cut-off events. For 12704/12846 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 54947 event pairs, 548 based on Foata normal form. 4/4676 useless extension candidates. Maximal degree in co-relation 13619. Up to 1640 conditions per place. [2022-07-13 22:04:14,951 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 119 selfloop transitions, 36 changer transitions 16/417 dead transitions. [2022-07-13 22:04:14,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 417 transitions, 2151 flow [2022-07-13 22:04:14,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:04:14,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:04:14,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4017 transitions. [2022-07-13 22:04:14,957 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8778409090909091 [2022-07-13 22:04:14,957 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4017 transitions. [2022-07-13 22:04:14,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4017 transitions. [2022-07-13 22:04:14,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:14,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4017 transitions. [2022-07-13 22:04:14,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 251.0625) internal successors, (4017), 16 states have internal predecessors, (4017), 0 states have call successors, (0), 0 states 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 22:04:14,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states 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 22:04:14,968 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states 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 22:04:14,969 INFO L186 Difference]: Start difference. First operand has 326 places, 339 transitions, 1237 flow. Second operand 16 states and 4017 transitions. [2022-07-13 22:04:14,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 417 transitions, 2151 flow [2022-07-13 22:04:15,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 417 transitions, 2004 flow, removed 71 selfloop flow, removed 3 redundant places. [2022-07-13 22:04:15,027 INFO L242 Difference]: Finished difference. Result has 347 places, 363 transitions, 1565 flow [2022-07-13 22:04:15,027 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1565, PETRI_PLACES=347, PETRI_TRANSITIONS=363} [2022-07-13 22:04:15,028 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 91 predicate places. [2022-07-13 22:04:15,028 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 363 transitions, 1565 flow [2022-07-13 22:04:15,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:15,028 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:15,029 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:15,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 22:04:15,029 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:15,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:15,029 INFO L85 PathProgramCache]: Analyzing trace with hash -557087307, now seen corresponding path program 3 times [2022-07-13 22:04:15,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:15,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286766981] [2022-07-13 22:04:15,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:15,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:15,118 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 22:04:15,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:15,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286766981] [2022-07-13 22:04:15,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286766981] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:15,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:15,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:15,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296802096] [2022-07-13 22:04:15,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:15,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:15,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:15,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:15,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:15,121 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:04:15,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 363 transitions, 1565 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:15,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:15,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:04:15,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:15,965 INFO L129 PetriNetUnfolder]: 1234/5323 cut-off events. [2022-07-13 22:04:15,965 INFO L130 PetriNetUnfolder]: For 17328/17500 co-relation queries the response was YES. [2022-07-13 22:04:16,013 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15821 conditions, 5323 events. 1234/5323 cut-off events. For 17328/17500 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 60342 event pairs, 578 based on Foata normal form. 8/5071 useless extension candidates. Maximal degree in co-relation 15738. Up to 1768 conditions per place. [2022-07-13 22:04:16,031 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 128 selfloop transitions, 45 changer transitions 14/433 dead transitions. [2022-07-13 22:04:16,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 433 transitions, 2640 flow [2022-07-13 22:04:16,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:04:16,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:04:16,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4014 transitions. [2022-07-13 22:04:16,038 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8771853146853147 [2022-07-13 22:04:16,038 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4014 transitions. [2022-07-13 22:04:16,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4014 transitions. [2022-07-13 22:04:16,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:16,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4014 transitions. [2022-07-13 22:04:16,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 250.875) internal successors, (4014), 16 states have internal predecessors, (4014), 0 states have call successors, (0), 0 states 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 22:04:16,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states 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 22:04:16,050 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states 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 22:04:16,050 INFO L186 Difference]: Start difference. First operand has 347 places, 363 transitions, 1565 flow. Second operand 16 states and 4014 transitions. [2022-07-13 22:04:16,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 433 transitions, 2640 flow [2022-07-13 22:04:16,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 433 transitions, 2314 flow, removed 163 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:16,234 INFO L242 Difference]: Finished difference. Result has 368 places, 383 transitions, 1750 flow [2022-07-13 22:04:16,234 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1750, PETRI_PLACES=368, PETRI_TRANSITIONS=383} [2022-07-13 22:04:16,235 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 112 predicate places. [2022-07-13 22:04:16,235 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 383 transitions, 1750 flow [2022-07-13 22:04:16,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:16,236 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:16,236 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:16,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 22:04:16,237 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:16,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:16,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1371012535, now seen corresponding path program 4 times [2022-07-13 22:04:16,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:16,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032526711] [2022-07-13 22:04:16,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:16,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:16,336 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 22:04:16,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:16,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032526711] [2022-07-13 22:04:16,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032526711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:16,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:16,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:16,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543873792] [2022-07-13 22:04:16,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:16,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:16,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:16,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:16,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:16,352 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:04:16,353 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 383 transitions, 1750 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:16,353 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:16,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:04:16,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:17,248 INFO L129 PetriNetUnfolder]: 1377/5982 cut-off events. [2022-07-13 22:04:17,248 INFO L130 PetriNetUnfolder]: For 16689/16882 co-relation queries the response was YES. [2022-07-13 22:04:17,308 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17550 conditions, 5982 events. 1377/5982 cut-off events. For 16689/16882 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 69818 event pairs, 653 based on Foata normal form. 3/5717 useless extension candidates. Maximal degree in co-relation 17458. Up to 1822 conditions per place. [2022-07-13 22:04:17,331 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 152 selfloop transitions, 50 changer transitions 23/471 dead transitions. [2022-07-13 22:04:17,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 471 transitions, 3092 flow [2022-07-13 22:04:17,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:04:17,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-13 22:04:17,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5261 transitions. [2022-07-13 22:04:17,338 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.875957375957376 [2022-07-13 22:04:17,339 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5261 transitions. [2022-07-13 22:04:17,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5261 transitions. [2022-07-13 22:04:17,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:17,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5261 transitions. [2022-07-13 22:04:17,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 250.52380952380952) internal successors, (5261), 21 states have internal predecessors, (5261), 0 states have call successors, (0), 0 states 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 22:04:17,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states 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 22:04:17,355 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states 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 22:04:17,355 INFO L186 Difference]: Start difference. First operand has 368 places, 383 transitions, 1750 flow. Second operand 21 states and 5261 transitions. [2022-07-13 22:04:17,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 471 transitions, 3092 flow [2022-07-13 22:04:17,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 471 transitions, 2948 flow, removed 64 selfloop flow, removed 3 redundant places. [2022-07-13 22:04:17,474 INFO L242 Difference]: Finished difference. Result has 398 places, 417 transitions, 2335 flow [2022-07-13 22:04:17,475 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1646, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2335, PETRI_PLACES=398, PETRI_TRANSITIONS=417} [2022-07-13 22:04:17,476 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 142 predicate places. [2022-07-13 22:04:17,476 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 417 transitions, 2335 flow [2022-07-13 22:04:17,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:17,477 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:17,477 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:17,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 22:04:17,477 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:17,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:17,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1095441069, now seen corresponding path program 5 times [2022-07-13 22:04:17,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:17,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127044165] [2022-07-13 22:04:17,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:17,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:17,580 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 22:04:17,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:17,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127044165] [2022-07-13 22:04:17,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127044165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:17,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:17,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:17,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397113094] [2022-07-13 22:04:17,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:17,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:17,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:17,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:17,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:17,584 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:04:17,586 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 417 transitions, 2335 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:17,586 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:17,586 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:04:17,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:18,565 INFO L129 PetriNetUnfolder]: 1407/6138 cut-off events. [2022-07-13 22:04:18,565 INFO L130 PetriNetUnfolder]: For 24729/24901 co-relation queries the response was YES. [2022-07-13 22:04:18,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19542 conditions, 6138 events. 1407/6138 cut-off events. For 24729/24901 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 72650 event pairs, 601 based on Foata normal form. 4/5885 useless extension candidates. Maximal degree in co-relation 19437. Up to 1778 conditions per place. [2022-07-13 22:04:18,635 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 170 selfloop transitions, 60 changer transitions 22/498 dead transitions. [2022-07-13 22:04:18,636 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 498 transitions, 3741 flow [2022-07-13 22:04:18,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:04:18,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-13 22:04:18,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5012 transitions. [2022-07-13 22:04:18,640 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8762237762237762 [2022-07-13 22:04:18,640 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5012 transitions. [2022-07-13 22:04:18,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5012 transitions. [2022-07-13 22:04:18,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:18,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5012 transitions. [2022-07-13 22:04:18,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 250.6) internal successors, (5012), 20 states have internal predecessors, (5012), 0 states have call successors, (0), 0 states 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 22:04:18,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states 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 22:04:18,651 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states 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 22:04:18,651 INFO L186 Difference]: Start difference. First operand has 398 places, 417 transitions, 2335 flow. Second operand 20 states and 5012 transitions. [2022-07-13 22:04:18,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 498 transitions, 3741 flow [2022-07-13 22:04:18,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 498 transitions, 3403 flow, removed 169 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:18,841 INFO L242 Difference]: Finished difference. Result has 428 places, 449 transitions, 2779 flow [2022-07-13 22:04:18,842 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2779, PETRI_PLACES=428, PETRI_TRANSITIONS=449} [2022-07-13 22:04:18,842 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 172 predicate places. [2022-07-13 22:04:18,842 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 449 transitions, 2779 flow [2022-07-13 22:04:18,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:18,843 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:18,843 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:18,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 22:04:18,843 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:18,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:18,844 INFO L85 PathProgramCache]: Analyzing trace with hash 373473445, now seen corresponding path program 6 times [2022-07-13 22:04:18,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:18,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58361509] [2022-07-13 22:04:18,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:18,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:18,931 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 22:04:18,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:18,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58361509] [2022-07-13 22:04:18,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58361509] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:18,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:18,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:18,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909038145] [2022-07-13 22:04:18,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:18,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:18,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:18,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:18,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:18,934 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:04:18,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 449 transitions, 2779 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:18,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:18,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:04:18,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:20,067 INFO L129 PetriNetUnfolder]: 1452/6380 cut-off events. [2022-07-13 22:04:20,067 INFO L130 PetriNetUnfolder]: For 30188/30380 co-relation queries the response was YES. [2022-07-13 22:04:20,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20880 conditions, 6380 events. 1452/6380 cut-off events. For 30188/30380 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 76484 event pairs, 511 based on Foata normal form. 4/6138 useless extension candidates. Maximal degree in co-relation 20761. Up to 1492 conditions per place. [2022-07-13 22:04:20,144 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 200 selfloop transitions, 103 changer transitions 26/575 dead transitions. [2022-07-13 22:04:20,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 575 transitions, 4587 flow [2022-07-13 22:04:20,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:04:20,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 22:04:20,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6012 transitions. [2022-07-13 22:04:20,148 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8758741258741258 [2022-07-13 22:04:20,148 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6012 transitions. [2022-07-13 22:04:20,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6012 transitions. [2022-07-13 22:04:20,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:20,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6012 transitions. [2022-07-13 22:04:20,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 250.5) internal successors, (6012), 24 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states 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 22:04:20,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states 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 22:04:20,162 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states 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 22:04:20,162 INFO L186 Difference]: Start difference. First operand has 428 places, 449 transitions, 2779 flow. Second operand 24 states and 6012 transitions. [2022-07-13 22:04:20,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 575 transitions, 4587 flow [2022-07-13 22:04:20,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 575 transitions, 4273 flow, removed 157 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:20,364 INFO L242 Difference]: Finished difference. Result has 466 places, 475 transitions, 3279 flow [2022-07-13 22:04:20,364 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3279, PETRI_PLACES=466, PETRI_TRANSITIONS=475} [2022-07-13 22:04:20,365 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 210 predicate places. [2022-07-13 22:04:20,365 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 475 transitions, 3279 flow [2022-07-13 22:04:20,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:20,366 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:20,366 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:20,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 22:04:20,366 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:20,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:20,367 INFO L85 PathProgramCache]: Analyzing trace with hash 595245651, now seen corresponding path program 7 times [2022-07-13 22:04:20,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:20,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520444233] [2022-07-13 22:04:20,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:20,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:20,438 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 22:04:20,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:20,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520444233] [2022-07-13 22:04:20,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520444233] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:20,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:20,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:20,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388910788] [2022-07-13 22:04:20,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:20,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:20,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:20,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:20,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:20,442 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:04:20,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 475 transitions, 3279 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:20,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:20,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:04:20,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:21,816 INFO L129 PetriNetUnfolder]: 1500/6821 cut-off events. [2022-07-13 22:04:21,816 INFO L130 PetriNetUnfolder]: For 36692/37024 co-relation queries the response was YES. [2022-07-13 22:04:21,897 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22835 conditions, 6821 events. 1500/6821 cut-off events. For 36692/37024 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 83395 event pairs, 587 based on Foata normal form. 42/6608 useless extension candidates. Maximal degree in co-relation 22698. Up to 1954 conditions per place. [2022-07-13 22:04:21,919 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 188 selfloop transitions, 97 changer transitions 24/555 dead transitions. [2022-07-13 22:04:21,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 555 transitions, 4868 flow [2022-07-13 22:04:21,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:04:21,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-13 22:04:21,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5507 transitions. [2022-07-13 22:04:21,927 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8752383979656707 [2022-07-13 22:04:21,927 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5507 transitions. [2022-07-13 22:04:21,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5507 transitions. [2022-07-13 22:04:21,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:21,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5507 transitions. [2022-07-13 22:04:21,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 250.3181818181818) internal successors, (5507), 22 states have internal predecessors, (5507), 0 states have call successors, (0), 0 states 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 22:04:21,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states 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 22:04:21,944 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states 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 22:04:21,944 INFO L186 Difference]: Start difference. First operand has 466 places, 475 transitions, 3279 flow. Second operand 22 states and 5507 transitions. [2022-07-13 22:04:21,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 555 transitions, 4868 flow [2022-07-13 22:04:22,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 555 transitions, 4804 flow, removed 29 selfloop flow, removed 3 redundant places. [2022-07-13 22:04:22,209 INFO L242 Difference]: Finished difference. Result has 495 places, 499 transitions, 3945 flow [2022-07-13 22:04:22,210 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=3221, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3945, PETRI_PLACES=495, PETRI_TRANSITIONS=499} [2022-07-13 22:04:22,210 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 239 predicate places. [2022-07-13 22:04:22,210 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 499 transitions, 3945 flow [2022-07-13 22:04:22,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:22,211 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:22,211 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:22,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 22:04:22,212 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:22,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:22,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1428097059, now seen corresponding path program 8 times [2022-07-13 22:04:22,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:22,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214291661] [2022-07-13 22:04:22,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:22,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:22,290 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 22:04:22,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:22,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214291661] [2022-07-13 22:04:22,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214291661] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:22,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:22,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:22,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962354230] [2022-07-13 22:04:22,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:22,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:22,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:22,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:22,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:22,294 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:04:22,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 499 transitions, 3945 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:22,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:22,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:04:22,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:23,631 INFO L129 PetriNetUnfolder]: 1485/6506 cut-off events. [2022-07-13 22:04:23,631 INFO L130 PetriNetUnfolder]: For 42522/42730 co-relation queries the response was YES. [2022-07-13 22:04:23,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23611 conditions, 6506 events. 1485/6506 cut-off events. For 42522/42730 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 78066 event pairs, 586 based on Foata normal form. 23/6271 useless extension candidates. Maximal degree in co-relation 23463. Up to 2015 conditions per place. [2022-07-13 22:04:23,814 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 187 selfloop transitions, 103 changer transitions 23/559 dead transitions. [2022-07-13 22:04:23,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 559 transitions, 5334 flow [2022-07-13 22:04:23,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:04:23,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:04:23,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4511 transitions. [2022-07-13 22:04:23,832 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8762626262626263 [2022-07-13 22:04:23,832 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4511 transitions. [2022-07-13 22:04:23,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4511 transitions. [2022-07-13 22:04:23,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:23,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4511 transitions. [2022-07-13 22:04:23,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states 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 22:04:23,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:04:23,844 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:04:23,844 INFO L186 Difference]: Start difference. First operand has 495 places, 499 transitions, 3945 flow. Second operand 18 states and 4511 transitions. [2022-07-13 22:04:23,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 559 transitions, 5334 flow [2022-07-13 22:04:24,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 559 transitions, 5114 flow, removed 102 selfloop flow, removed 4 redundant places. [2022-07-13 22:04:24,123 INFO L242 Difference]: Finished difference. Result has 512 places, 514 transitions, 4379 flow [2022-07-13 22:04:24,124 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=3746, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4379, PETRI_PLACES=512, PETRI_TRANSITIONS=514} [2022-07-13 22:04:24,124 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 256 predicate places. [2022-07-13 22:04:24,124 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 514 transitions, 4379 flow [2022-07-13 22:04:24,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:24,125 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:24,125 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:24,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 22:04:24,125 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:24,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:24,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1079080099, now seen corresponding path program 9 times [2022-07-13 22:04:24,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:24,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719336825] [2022-07-13 22:04:24,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:24,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:24,198 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 22:04:24,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:24,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719336825] [2022-07-13 22:04:24,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719336825] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:24,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:24,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:24,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111161301] [2022-07-13 22:04:24,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:24,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:24,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:24,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:24,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:24,201 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:04:24,202 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 514 transitions, 4379 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:24,202 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:24,202 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:04:24,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:25,566 INFO L129 PetriNetUnfolder]: 1536/7064 cut-off events. [2022-07-13 22:04:25,566 INFO L130 PetriNetUnfolder]: For 48851/49107 co-relation queries the response was YES. [2022-07-13 22:04:25,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25480 conditions, 7064 events. 1536/7064 cut-off events. For 48851/49107 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 87286 event pairs, 647 based on Foata normal form. 3/6791 useless extension candidates. Maximal degree in co-relation 25329. Up to 2069 conditions per place. [2022-07-13 22:04:25,687 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 209 selfloop transitions, 111 changer transitions 19/585 dead transitions. [2022-07-13 22:04:25,687 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 585 transitions, 6045 flow [2022-07-13 22:04:25,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:04:25,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-13 22:04:25,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5008 transitions. [2022-07-13 22:04:25,691 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8755244755244755 [2022-07-13 22:04:25,691 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5008 transitions. [2022-07-13 22:04:25,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5008 transitions. [2022-07-13 22:04:25,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:25,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5008 transitions. [2022-07-13 22:04:25,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 250.4) internal successors, (5008), 20 states have internal predecessors, (5008), 0 states have call successors, (0), 0 states 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 22:04:25,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states 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 22:04:25,702 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states 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 22:04:25,702 INFO L186 Difference]: Start difference. First operand has 512 places, 514 transitions, 4379 flow. Second operand 20 states and 5008 transitions. [2022-07-13 22:04:25,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 585 transitions, 6045 flow [2022-07-13 22:04:26,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 585 transitions, 5647 flow, removed 167 selfloop flow, removed 7 redundant places. [2022-07-13 22:04:26,089 INFO L242 Difference]: Finished difference. Result has 536 places, 541 transitions, 4998 flow [2022-07-13 22:04:26,090 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=4102, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4998, PETRI_PLACES=536, PETRI_TRANSITIONS=541} [2022-07-13 22:04:26,090 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 280 predicate places. [2022-07-13 22:04:26,090 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 541 transitions, 4998 flow [2022-07-13 22:04:26,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:26,091 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:26,091 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:26,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 22:04:26,091 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:26,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:26,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1099183391, now seen corresponding path program 10 times [2022-07-13 22:04:26,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:26,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613123426] [2022-07-13 22:04:26,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:26,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:26,169 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 22:04:26,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:26,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613123426] [2022-07-13 22:04:26,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613123426] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:26,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:26,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:26,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502481883] [2022-07-13 22:04:26,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:26,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:26,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:26,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:26,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:26,173 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:04:26,174 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 541 transitions, 4998 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:26,174 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:26,174 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:04:26,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:27,569 INFO L129 PetriNetUnfolder]: 1578/7316 cut-off events. [2022-07-13 22:04:27,570 INFO L130 PetriNetUnfolder]: For 42205/42413 co-relation queries the response was YES. [2022-07-13 22:04:27,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26764 conditions, 7316 events. 1578/7316 cut-off events. For 42205/42413 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 91296 event pairs, 609 based on Foata normal form. 12/7070 useless extension candidates. Maximal degree in co-relation 26604. Up to 2102 conditions per place. [2022-07-13 22:04:27,690 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 237 selfloop transitions, 102 changer transitions 15/600 dead transitions. [2022-07-13 22:04:27,690 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 600 transitions, 6518 flow [2022-07-13 22:04:27,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:04:27,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:04:27,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4265 transitions. [2022-07-13 22:04:27,693 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8772110242698478 [2022-07-13 22:04:27,693 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4265 transitions. [2022-07-13 22:04:27,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4265 transitions. [2022-07-13 22:04:27,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:27,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4265 transitions. [2022-07-13 22:04:27,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.88235294117646) internal successors, (4265), 17 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states 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 22:04:27,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states 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 22:04:27,701 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states 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 22:04:27,701 INFO L186 Difference]: Start difference. First operand has 536 places, 541 transitions, 4998 flow. Second operand 17 states and 4265 transitions. [2022-07-13 22:04:27,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 600 transitions, 6518 flow [2022-07-13 22:04:28,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 600 transitions, 6258 flow, removed 107 selfloop flow, removed 3 redundant places. [2022-07-13 22:04:28,049 INFO L242 Difference]: Finished difference. Result has 553 places, 563 transitions, 5497 flow [2022-07-13 22:04:28,049 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=4819, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5497, PETRI_PLACES=553, PETRI_TRANSITIONS=563} [2022-07-13 22:04:28,050 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 297 predicate places. [2022-07-13 22:04:28,051 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 563 transitions, 5497 flow [2022-07-13 22:04:28,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:28,052 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:28,052 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:28,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 22:04:28,052 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:28,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:28,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1336984687, now seen corresponding path program 11 times [2022-07-13 22:04:28,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:28,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974962411] [2022-07-13 22:04:28,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:28,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:28,126 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 22:04:28,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:28,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974962411] [2022-07-13 22:04:28,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974962411] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:28,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:28,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:28,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983743679] [2022-07-13 22:04:28,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:28,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:28,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:28,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:28,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:28,129 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:04:28,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 563 transitions, 5497 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:28,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:28,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:04:28,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:29,586 INFO L129 PetriNetUnfolder]: 1628/7476 cut-off events. [2022-07-13 22:04:29,586 INFO L130 PetriNetUnfolder]: For 41207/41471 co-relation queries the response was YES. [2022-07-13 22:04:29,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27622 conditions, 7476 events. 1628/7476 cut-off events. For 41207/41471 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 93842 event pairs, 665 based on Foata normal form. 3/7205 useless extension candidates. Maximal degree in co-relation 27458. Up to 2134 conditions per place. [2022-07-13 22:04:29,701 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 235 selfloop transitions, 125 changer transitions 16/622 dead transitions. [2022-07-13 22:04:29,701 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 622 transitions, 6996 flow [2022-07-13 22:04:29,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:04:29,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:04:29,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4265 transitions. [2022-07-13 22:04:29,704 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8772110242698478 [2022-07-13 22:04:29,704 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4265 transitions. [2022-07-13 22:04:29,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4265 transitions. [2022-07-13 22:04:29,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:29,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4265 transitions. [2022-07-13 22:04:29,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.88235294117646) internal successors, (4265), 17 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states 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 22:04:29,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states 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 22:04:29,712 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states 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 22:04:29,712 INFO L186 Difference]: Start difference. First operand has 553 places, 563 transitions, 5497 flow. Second operand 17 states and 4265 transitions. [2022-07-13 22:04:29,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 622 transitions, 6996 flow [2022-07-13 22:04:30,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 622 transitions, 6835 flow, removed 55 selfloop flow, removed 3 redundant places. [2022-07-13 22:04:30,053 INFO L242 Difference]: Finished difference. Result has 572 places, 584 transitions, 6126 flow [2022-07-13 22:04:30,054 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=5357, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6126, PETRI_PLACES=572, PETRI_TRANSITIONS=584} [2022-07-13 22:04:30,054 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 316 predicate places. [2022-07-13 22:04:30,054 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 584 transitions, 6126 flow [2022-07-13 22:04:30,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:30,054 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:30,054 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:30,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 22:04:30,055 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:30,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:30,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1288177509, now seen corresponding path program 12 times [2022-07-13 22:04:30,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:30,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358113073] [2022-07-13 22:04:30,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:30,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:30,120 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 22:04:30,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:30,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358113073] [2022-07-13 22:04:30,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358113073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:30,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:30,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:30,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022771366] [2022-07-13 22:04:30,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:30,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:30,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:30,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:30,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:30,123 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:04:30,124 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 584 transitions, 6126 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:30,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:30,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:04:30,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:31,874 INFO L129 PetriNetUnfolder]: 1633/7803 cut-off events. [2022-07-13 22:04:31,874 INFO L130 PetriNetUnfolder]: For 44343/44595 co-relation queries the response was YES. [2022-07-13 22:04:31,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28609 conditions, 7803 events. 1633/7803 cut-off events. For 44343/44595 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 99701 event pairs, 660 based on Foata normal form. 3/7534 useless extension candidates. Maximal degree in co-relation 28439. Up to 2179 conditions per place. [2022-07-13 22:04:31,998 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 233 selfloop transitions, 130 changer transitions 20/629 dead transitions. [2022-07-13 22:04:31,998 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 629 transitions, 7379 flow [2022-07-13 22:04:31,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:04:31,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:04:32,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4511 transitions. [2022-07-13 22:04:32,001 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8762626262626263 [2022-07-13 22:04:32,001 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4511 transitions. [2022-07-13 22:04:32,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4511 transitions. [2022-07-13 22:04:32,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:32,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4511 transitions. [2022-07-13 22:04:32,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states 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 22:04:32,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:04:32,011 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:04:32,011 INFO L186 Difference]: Start difference. First operand has 572 places, 584 transitions, 6126 flow. Second operand 18 states and 4511 transitions. [2022-07-13 22:04:32,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 629 transitions, 7379 flow [2022-07-13 22:04:32,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 629 transitions, 7247 flow, removed 66 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:32,390 INFO L242 Difference]: Finished difference. Result has 590 places, 594 transitions, 6525 flow [2022-07-13 22:04:32,391 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=6010, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6525, PETRI_PLACES=590, PETRI_TRANSITIONS=594} [2022-07-13 22:04:32,391 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 334 predicate places. [2022-07-13 22:04:32,391 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 594 transitions, 6525 flow [2022-07-13 22:04:32,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:32,392 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:32,392 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:32,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 22:04:32,393 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:32,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:32,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1677599557, now seen corresponding path program 13 times [2022-07-13 22:04:32,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:32,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796629857] [2022-07-13 22:04:32,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:32,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:32,471 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 22:04:32,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:32,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796629857] [2022-07-13 22:04:32,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796629857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:32,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:32,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:32,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555023621] [2022-07-13 22:04:32,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:32,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:32,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:32,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:32,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:32,475 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:04:32,477 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 594 transitions, 6525 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:32,477 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:32,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:04:32,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:34,323 INFO L129 PetriNetUnfolder]: 1617/7816 cut-off events. [2022-07-13 22:04:34,323 INFO L130 PetriNetUnfolder]: For 44887/45092 co-relation queries the response was YES. [2022-07-13 22:04:34,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29021 conditions, 7816 events. 1617/7816 cut-off events. For 44887/45092 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 100313 event pairs, 614 based on Foata normal form. 12/7571 useless extension candidates. Maximal degree in co-relation 28847. Up to 2169 conditions per place. [2022-07-13 22:04:34,461 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 247 selfloop transitions, 119 changer transitions 24/636 dead transitions. [2022-07-13 22:04:34,461 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 636 transitions, 7702 flow [2022-07-13 22:04:34,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:04:34,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:04:34,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4515 transitions. [2022-07-13 22:04:34,464 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.877039627039627 [2022-07-13 22:04:34,464 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4515 transitions. [2022-07-13 22:04:34,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4515 transitions. [2022-07-13 22:04:34,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:34,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4515 transitions. [2022-07-13 22:04:34,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.83333333333334) internal successors, (4515), 18 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states 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 22:04:34,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:04:34,475 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:04:34,475 INFO L186 Difference]: Start difference. First operand has 590 places, 594 transitions, 6525 flow. Second operand 18 states and 4515 transitions. [2022-07-13 22:04:34,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 636 transitions, 7702 flow [2022-07-13 22:04:34,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 636 transitions, 7554 flow, removed 38 selfloop flow, removed 7 redundant places. [2022-07-13 22:04:34,896 INFO L242 Difference]: Finished difference. Result has 603 places, 601 transitions, 6816 flow [2022-07-13 22:04:34,897 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=6379, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6816, PETRI_PLACES=603, PETRI_TRANSITIONS=601} [2022-07-13 22:04:34,897 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 347 predicate places. [2022-07-13 22:04:34,898 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 601 transitions, 6816 flow [2022-07-13 22:04:34,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:34,898 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:34,898 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:34,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 22:04:34,898 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:34,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:34,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1392374027, now seen corresponding path program 14 times [2022-07-13 22:04:34,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:34,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459861438] [2022-07-13 22:04:34,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:34,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:34,963 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 22:04:34,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:34,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459861438] [2022-07-13 22:04:34,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459861438] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:34,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:34,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:34,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884929009] [2022-07-13 22:04:34,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:34,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:34,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:34,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:34,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:34,966 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:04:34,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 601 transitions, 6816 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:34,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:34,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:04:34,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:36,676 INFO L129 PetriNetUnfolder]: 1675/7954 cut-off events. [2022-07-13 22:04:36,676 INFO L130 PetriNetUnfolder]: For 50888/51093 co-relation queries the response was YES. [2022-07-13 22:04:36,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30534 conditions, 7954 events. 1675/7954 cut-off events. For 50888/51093 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 102113 event pairs, 587 based on Foata normal form. 4/7700 useless extension candidates. Maximal degree in co-relation 30361. Up to 2053 conditions per place. [2022-07-13 22:04:36,806 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 255 selfloop transitions, 156 changer transitions 23/680 dead transitions. [2022-07-13 22:04:36,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 680 transitions, 8591 flow [2022-07-13 22:04:36,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:04:36,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-13 22:04:36,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5505 transitions. [2022-07-13 22:04:36,809 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8749205340114431 [2022-07-13 22:04:36,809 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5505 transitions. [2022-07-13 22:04:36,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5505 transitions. [2022-07-13 22:04:36,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:36,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5505 transitions. [2022-07-13 22:04:36,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 250.22727272727272) internal successors, (5505), 22 states have internal predecessors, (5505), 0 states have call successors, (0), 0 states 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 22:04:36,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states 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 22:04:36,817 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states 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 22:04:36,818 INFO L186 Difference]: Start difference. First operand has 603 places, 601 transitions, 6816 flow. Second operand 22 states and 5505 transitions. [2022-07-13 22:04:36,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 680 transitions, 8591 flow [2022-07-13 22:04:37,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 616 places, 680 transitions, 8472 flow, removed 52 selfloop flow, removed 6 redundant places. [2022-07-13 22:04:37,242 INFO L242 Difference]: Finished difference. Result has 630 places, 629 transitions, 7633 flow [2022-07-13 22:04:37,243 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=6699, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7633, PETRI_PLACES=630, PETRI_TRANSITIONS=629} [2022-07-13 22:04:37,243 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 374 predicate places. [2022-07-13 22:04:37,243 INFO L495 AbstractCegarLoop]: Abstraction has has 630 places, 629 transitions, 7633 flow [2022-07-13 22:04:37,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:37,244 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:37,244 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:37,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 22:04:37,244 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:37,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:37,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1289975747, now seen corresponding path program 15 times [2022-07-13 22:04:37,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:37,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206277786] [2022-07-13 22:04:37,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:37,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:37,309 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 22:04:37,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:37,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206277786] [2022-07-13 22:04:37,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206277786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:37,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:37,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:37,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447033543] [2022-07-13 22:04:37,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:37,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:37,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:37,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:37,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:37,312 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:04:37,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 629 transitions, 7633 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:37,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:37,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:04:37,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:39,184 INFO L129 PetriNetUnfolder]: 1709/8169 cut-off events. [2022-07-13 22:04:39,185 INFO L130 PetriNetUnfolder]: For 58457/58662 co-relation queries the response was YES. [2022-07-13 22:04:39,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32546 conditions, 8169 events. 1709/8169 cut-off events. For 58457/58662 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 105382 event pairs, 599 based on Foata normal form. 4/7905 useless extension candidates. Maximal degree in co-relation 32364. Up to 2092 conditions per place. [2022-07-13 22:04:39,477 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 320 selfloop transitions, 111 changer transitions 21/698 dead transitions. [2022-07-13 22:04:39,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 698 transitions, 9541 flow [2022-07-13 22:04:39,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:04:39,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-13 22:04:39,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5258 transitions. [2022-07-13 22:04:39,480 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8754578754578755 [2022-07-13 22:04:39,480 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5258 transitions. [2022-07-13 22:04:39,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5258 transitions. [2022-07-13 22:04:39,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:39,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5258 transitions. [2022-07-13 22:04:39,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 250.38095238095238) internal successors, (5258), 21 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states 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 22:04:39,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states 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 22:04:39,488 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states 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 22:04:39,488 INFO L186 Difference]: Start difference. First operand has 630 places, 629 transitions, 7633 flow. Second operand 21 states and 5258 transitions. [2022-07-13 22:04:39,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 698 transitions, 9541 flow [2022-07-13 22:04:39,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 646 places, 698 transitions, 9443 flow, removed 49 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:39,945 INFO L242 Difference]: Finished difference. Result has 660 places, 655 transitions, 8522 flow [2022-07-13 22:04:39,945 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=7537, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8522, PETRI_PLACES=660, PETRI_TRANSITIONS=655} [2022-07-13 22:04:39,946 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 404 predicate places. [2022-07-13 22:04:39,946 INFO L495 AbstractCegarLoop]: Abstraction has has 660 places, 655 transitions, 8522 flow [2022-07-13 22:04:39,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:39,946 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:39,946 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:39,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 22:04:39,947 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:39,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:39,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1950041, now seen corresponding path program 16 times [2022-07-13 22:04:39,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:39,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811079362] [2022-07-13 22:04:39,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:39,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:40,013 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 22:04:40,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:40,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811079362] [2022-07-13 22:04:40,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811079362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:40,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:40,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:40,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070986120] [2022-07-13 22:04:40,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:40,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:40,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:40,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:40,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:40,016 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:04:40,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 655 transitions, 8522 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:40,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:40,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:04:40,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:41,925 INFO L129 PetriNetUnfolder]: 1708/8283 cut-off events. [2022-07-13 22:04:41,925 INFO L130 PetriNetUnfolder]: For 64535/64740 co-relation queries the response was YES. [2022-07-13 22:04:42,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33597 conditions, 8283 events. 1708/8283 cut-off events. For 64535/64740 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 107483 event pairs, 597 based on Foata normal form. 4/8027 useless extension candidates. Maximal degree in co-relation 33402. Up to 2145 conditions per place. [2022-07-13 22:04:42,076 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 272 selfloop transitions, 166 changer transitions 23/707 dead transitions. [2022-07-13 22:04:42,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 675 places, 707 transitions, 9976 flow [2022-07-13 22:04:42,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:04:42,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:04:42,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4511 transitions. [2022-07-13 22:04:42,079 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8762626262626263 [2022-07-13 22:04:42,079 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4511 transitions. [2022-07-13 22:04:42,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4511 transitions. [2022-07-13 22:04:42,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:42,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4511 transitions. [2022-07-13 22:04:42,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states 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 22:04:42,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:04:42,085 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:04:42,085 INFO L186 Difference]: Start difference. First operand has 660 places, 655 transitions, 8522 flow. Second operand 18 states and 4511 transitions. [2022-07-13 22:04:42,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 675 places, 707 transitions, 9976 flow [2022-07-13 22:04:42,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 673 places, 707 transitions, 9738 flow, removed 119 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:42,630 INFO L242 Difference]: Finished difference. Result has 680 places, 664 transitions, 8881 flow [2022-07-13 22:04:42,631 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=8286, PETRI_DIFFERENCE_MINUEND_PLACES=656, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8881, PETRI_PLACES=680, PETRI_TRANSITIONS=664} [2022-07-13 22:04:42,631 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 424 predicate places. [2022-07-13 22:04:42,631 INFO L495 AbstractCegarLoop]: Abstraction has has 680 places, 664 transitions, 8881 flow [2022-07-13 22:04:42,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:42,632 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:42,632 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:42,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 22:04:42,632 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:42,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:42,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1944847779, now seen corresponding path program 17 times [2022-07-13 22:04:42,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:42,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343115024] [2022-07-13 22:04:42,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:42,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:42,696 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 22:04:42,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:42,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343115024] [2022-07-13 22:04:42,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343115024] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:42,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:42,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:42,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780221294] [2022-07-13 22:04:42,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:42,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:42,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:42,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:42,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:42,699 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:04:42,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 664 transitions, 8881 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:42,700 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:42,700 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:04:42,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:44,627 INFO L129 PetriNetUnfolder]: 1763/8635 cut-off events. [2022-07-13 22:04:44,628 INFO L130 PetriNetUnfolder]: For 69368/69570 co-relation queries the response was YES. [2022-07-13 22:04:44,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35756 conditions, 8635 events. 1763/8635 cut-off events. For 69368/69570 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 113100 event pairs, 609 based on Foata normal form. 4/8371 useless extension candidates. Maximal degree in co-relation 35555. Up to 2188 conditions per place. [2022-07-13 22:04:44,793 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 324 selfloop transitions, 135 changer transitions 16/721 dead transitions. [2022-07-13 22:04:44,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 721 transitions, 10633 flow [2022-07-13 22:04:44,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:04:44,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:04:44,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4264 transitions. [2022-07-13 22:04:44,796 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8770053475935828 [2022-07-13 22:04:44,796 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4264 transitions. [2022-07-13 22:04:44,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4264 transitions. [2022-07-13 22:04:44,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:44,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4264 transitions. [2022-07-13 22:04:44,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.8235294117647) internal successors, (4264), 17 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states 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 22:04:44,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states 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 22:04:44,802 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states 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 22:04:44,802 INFO L186 Difference]: Start difference. First operand has 680 places, 664 transitions, 8881 flow. Second operand 17 states and 4264 transitions. [2022-07-13 22:04:44,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 721 transitions, 10633 flow [2022-07-13 22:04:45,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 721 transitions, 10373 flow, removed 53 selfloop flow, removed 6 redundant places. [2022-07-13 22:04:45,388 INFO L242 Difference]: Finished difference. Result has 694 places, 686 transitions, 9518 flow [2022-07-13 22:04:45,389 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=8635, PETRI_DIFFERENCE_MINUEND_PLACES=672, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9518, PETRI_PLACES=694, PETRI_TRANSITIONS=686} [2022-07-13 22:04:45,389 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 438 predicate places. [2022-07-13 22:04:45,389 INFO L495 AbstractCegarLoop]: Abstraction has has 694 places, 686 transitions, 9518 flow [2022-07-13 22:04:45,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:45,390 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:45,390 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:45,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 22:04:45,390 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:45,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:45,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1940649487, now seen corresponding path program 18 times [2022-07-13 22:04:45,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:45,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668002284] [2022-07-13 22:04:45,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:45,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:45,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:45,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:45,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668002284] [2022-07-13 22:04:45,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668002284] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:45,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:45,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:45,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596832103] [2022-07-13 22:04:45,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:45,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:45,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:45,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:45,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:45,488 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:04:45,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 694 places, 686 transitions, 9518 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:45,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:45,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:04:45,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:47,592 INFO L129 PetriNetUnfolder]: 1800/9065 cut-off events. [2022-07-13 22:04:47,592 INFO L130 PetriNetUnfolder]: For 71862/72064 co-relation queries the response was YES. [2022-07-13 22:04:47,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37620 conditions, 9065 events. 1800/9065 cut-off events. For 71862/72064 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 120591 event pairs, 613 based on Foata normal form. 4/8803 useless extension candidates. Maximal degree in co-relation 37416. Up to 2237 conditions per place. [2022-07-13 22:04:47,726 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 350 selfloop transitions, 130 changer transitions 17/743 dead transitions. [2022-07-13 22:04:47,726 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 708 places, 743 transitions, 11304 flow [2022-07-13 22:04:47,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:04:47,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:04:47,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4268 transitions. [2022-07-13 22:04:47,728 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8778280542986425 [2022-07-13 22:04:47,728 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4268 transitions. [2022-07-13 22:04:47,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4268 transitions. [2022-07-13 22:04:47,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:47,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4268 transitions. [2022-07-13 22:04:47,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 251.05882352941177) internal successors, (4268), 17 states have internal predecessors, (4268), 0 states have call successors, (0), 0 states 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 22:04:47,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states 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 22:04:47,733 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states 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 22:04:47,734 INFO L186 Difference]: Start difference. First operand has 694 places, 686 transitions, 9518 flow. Second operand 17 states and 4268 transitions. [2022-07-13 22:04:47,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 708 places, 743 transitions, 11304 flow [2022-07-13 22:04:48,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 706 places, 743 transitions, 11106 flow, removed 99 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:48,316 INFO L242 Difference]: Finished difference. Result has 714 places, 707 transitions, 10177 flow [2022-07-13 22:04:48,317 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=9334, PETRI_DIFFERENCE_MINUEND_PLACES=690, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10177, PETRI_PLACES=714, PETRI_TRANSITIONS=707} [2022-07-13 22:04:48,317 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 458 predicate places. [2022-07-13 22:04:48,317 INFO L495 AbstractCegarLoop]: Abstraction has has 714 places, 707 transitions, 10177 flow [2022-07-13 22:04:48,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:48,318 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:48,318 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:48,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 22:04:48,318 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:48,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:48,319 INFO L85 PathProgramCache]: Analyzing trace with hash 506742737, now seen corresponding path program 19 times [2022-07-13 22:04:48,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:48,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058488593] [2022-07-13 22:04:48,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:48,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:48,417 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 22:04:48,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:48,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058488593] [2022-07-13 22:04:48,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058488593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:48,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:48,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:48,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031911838] [2022-07-13 22:04:48,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:48,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:48,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:48,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:48,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:48,420 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:04:48,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 714 places, 707 transitions, 10177 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:48,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:48,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:04:48,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:50,677 INFO L129 PetriNetUnfolder]: 1805/9004 cut-off events. [2022-07-13 22:04:50,677 INFO L130 PetriNetUnfolder]: For 76006/76208 co-relation queries the response was YES. [2022-07-13 22:04:50,784 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38283 conditions, 9004 events. 1805/9004 cut-off events. For 76006/76208 co-relation queries the response was YES. Maximal size of possible extension queue 894. Compared 119149 event pairs, 617 based on Foata normal form. 4/8738 useless extension candidates. Maximal degree in co-relation 38072. Up to 2244 conditions per place. [2022-07-13 22:04:50,805 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 348 selfloop transitions, 135 changer transitions 21/750 dead transitions. [2022-07-13 22:04:50,805 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 750 transitions, 11698 flow [2022-07-13 22:04:50,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:04:50,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:04:50,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4514 transitions. [2022-07-13 22:04:50,808 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8768453768453769 [2022-07-13 22:04:50,808 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4514 transitions. [2022-07-13 22:04:50,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4514 transitions. [2022-07-13 22:04:50,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:50,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4514 transitions. [2022-07-13 22:04:50,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.77777777777777) internal successors, (4514), 18 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states 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 22:04:50,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:04:50,814 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:04:50,815 INFO L186 Difference]: Start difference. First operand has 714 places, 707 transitions, 10177 flow. Second operand 18 states and 4514 transitions. [2022-07-13 22:04:50,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 750 transitions, 11698 flow [2022-07-13 22:04:51,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 725 places, 750 transitions, 11369 flow, removed 86 selfloop flow, removed 4 redundant places. [2022-07-13 22:04:51,418 INFO L242 Difference]: Finished difference. Result has 730 places, 717 transitions, 10468 flow [2022-07-13 22:04:51,418 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=9885, PETRI_DIFFERENCE_MINUEND_PLACES=708, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10468, PETRI_PLACES=730, PETRI_TRANSITIONS=717} [2022-07-13 22:04:51,419 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 474 predicate places. [2022-07-13 22:04:51,419 INFO L495 AbstractCegarLoop]: Abstraction has has 730 places, 717 transitions, 10468 flow [2022-07-13 22:04:51,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:51,419 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:51,419 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:51,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 22:04:51,420 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:51,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:51,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1145906917, now seen corresponding path program 20 times [2022-07-13 22:04:51,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:51,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272724904] [2022-07-13 22:04:51,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:51,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:51,500 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 22:04:51,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:51,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272724904] [2022-07-13 22:04:51,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272724904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:51,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:51,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:51,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242319473] [2022-07-13 22:04:51,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:51,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:51,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:51,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:51,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:51,504 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:04:51,505 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 730 places, 717 transitions, 10468 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:51,505 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:51,505 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:04:51,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:53,694 INFO L129 PetriNetUnfolder]: 1805/9073 cut-off events. [2022-07-13 22:04:53,694 INFO L130 PetriNetUnfolder]: For 76299/76501 co-relation queries the response was YES. [2022-07-13 22:04:53,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38259 conditions, 9073 events. 1805/9073 cut-off events. For 76299/76501 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 120113 event pairs, 611 based on Foata normal form. 4/8815 useless extension candidates. Maximal degree in co-relation 38050. Up to 2254 conditions per place. [2022-07-13 22:04:53,867 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 334 selfloop transitions, 152 changer transitions 25/757 dead transitions. [2022-07-13 22:04:53,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 745 places, 757 transitions, 11840 flow [2022-07-13 22:04:53,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:04:53,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:04:53,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4514 transitions. [2022-07-13 22:04:53,871 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8768453768453769 [2022-07-13 22:04:53,871 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4514 transitions. [2022-07-13 22:04:53,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4514 transitions. [2022-07-13 22:04:53,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:53,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4514 transitions. [2022-07-13 22:04:53,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.77777777777777) internal successors, (4514), 18 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states 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 22:04:54,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:04:54,174 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:04:54,174 INFO L186 Difference]: Start difference. First operand has 730 places, 717 transitions, 10468 flow. Second operand 18 states and 4514 transitions. [2022-07-13 22:04:54,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 745 places, 757 transitions, 11840 flow [2022-07-13 22:04:54,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 737 places, 757 transitions, 11679 flow, removed 67 selfloop flow, removed 8 redundant places. [2022-07-13 22:04:55,003 INFO L242 Difference]: Finished difference. Result has 742 places, 724 transitions, 10822 flow [2022-07-13 22:04:55,004 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=10309, PETRI_DIFFERENCE_MINUEND_PLACES=720, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10822, PETRI_PLACES=742, PETRI_TRANSITIONS=724} [2022-07-13 22:04:55,004 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 486 predicate places. [2022-07-13 22:04:55,004 INFO L495 AbstractCegarLoop]: Abstraction has has 742 places, 724 transitions, 10822 flow [2022-07-13 22:04:55,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:55,005 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:55,005 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:55,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 22:04:55,005 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:55,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:55,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1682203553, now seen corresponding path program 1 times [2022-07-13 22:04:55,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:55,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446489517] [2022-07-13 22:04:55,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:55,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:55,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:55,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:55,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446489517] [2022-07-13 22:04:55,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446489517] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:55,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:55,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:55,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665148214] [2022-07-13 22:04:55,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:55,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:55,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:55,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:55,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:55,038 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 286 [2022-07-13 22:04:55,039 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 742 places, 724 transitions, 10822 flow. Second operand has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states 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 22:04:55,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:55,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 286 [2022-07-13 22:04:55,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:57,246 INFO L129 PetriNetUnfolder]: 1226/11011 cut-off events. [2022-07-13 22:04:57,246 INFO L130 PetriNetUnfolder]: For 97580/98019 co-relation queries the response was YES. [2022-07-13 22:04:57,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44305 conditions, 11011 events. 1226/11011 cut-off events. For 97580/98019 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 153043 event pairs, 54 based on Foata normal form. 18/10764 useless extension candidates. Maximal degree in co-relation 44096. Up to 738 conditions per place. [2022-07-13 22:04:57,409 INFO L132 encePairwiseOnDemand]: 282/286 looper letters, 14 selfloop transitions, 2 changer transitions 424/731 dead transitions. [2022-07-13 22:04:57,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 742 places, 731 transitions, 10879 flow [2022-07-13 22:04:57,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:57,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:57,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 816 transitions. [2022-07-13 22:04:57,410 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.951048951048951 [2022-07-13 22:04:57,410 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 816 transitions. [2022-07-13 22:04:57,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 816 transitions. [2022-07-13 22:04:57,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:57,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 816 transitions. [2022-07-13 22:04:57,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states 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 22:04:57,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:04:57,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:04:57,412 INFO L186 Difference]: Start difference. First operand has 742 places, 724 transitions, 10822 flow. Second operand 3 states and 816 transitions. [2022-07-13 22:04:57,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 742 places, 731 transitions, 10879 flow [2022-07-13 22:04:58,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 737 places, 731 transitions, 10710 flow, removed 45 selfloop flow, removed 5 redundant places. [2022-07-13 22:04:58,358 INFO L242 Difference]: Finished difference. Result has 738 places, 303 transitions, 1207 flow [2022-07-13 22:04:58,358 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=10653, PETRI_DIFFERENCE_MINUEND_PLACES=735, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=722, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1207, PETRI_PLACES=738, PETRI_TRANSITIONS=303} [2022-07-13 22:04:58,359 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 482 predicate places. [2022-07-13 22:04:58,359 INFO L495 AbstractCegarLoop]: Abstraction has has 738 places, 303 transitions, 1207 flow [2022-07-13 22:04:58,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states 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 22:04:58,359 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:58,359 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:58,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 22:04:58,360 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:58,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:58,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1498379551, now seen corresponding path program 2 times [2022-07-13 22:04:58,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:58,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953328452] [2022-07-13 22:04:58,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:58,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:58,382 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 22:04:58,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:58,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953328452] [2022-07-13 22:04:58,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953328452] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:58,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:58,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:58,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918604450] [2022-07-13 22:04:58,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:58,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:58,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:58,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:58,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:58,384 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 286 [2022-07-13 22:04:58,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 738 places, 303 transitions, 1207 flow. Second operand has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states 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 22:04:58,385 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:58,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 286 [2022-07-13 22:04:58,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:58,772 INFO L129 PetriNetUnfolder]: 137/1917 cut-off events. [2022-07-13 22:04:58,772 INFO L130 PetriNetUnfolder]: For 6188/6228 co-relation queries the response was YES. [2022-07-13 22:04:58,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4347 conditions, 1917 events. 137/1917 cut-off events. For 6188/6228 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 17212 event pairs, 19 based on Foata normal form. 12/1805 useless extension candidates. Maximal degree in co-relation 4173. Up to 135 conditions per place. [2022-07-13 22:04:58,808 INFO L132 encePairwiseOnDemand]: 280/286 looper letters, 12 selfloop transitions, 4 changer transitions 10/308 dead transitions. [2022-07-13 22:04:58,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 308 transitions, 1258 flow [2022-07-13 22:04:58,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:58,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:58,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 814 transitions. [2022-07-13 22:04:58,809 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2022-07-13 22:04:58,809 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 814 transitions. [2022-07-13 22:04:58,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 814 transitions. [2022-07-13 22:04:58,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:58,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 814 transitions. [2022-07-13 22:04:58,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 0 states have call successors, (0), 0 states 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 22:04:58,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:04:58,811 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:04:58,811 INFO L186 Difference]: Start difference. First operand has 738 places, 303 transitions, 1207 flow. Second operand 3 states and 814 transitions. [2022-07-13 22:04:58,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 308 transitions, 1258 flow [2022-07-13 22:04:58,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 308 transitions, 964 flow, removed 105 selfloop flow, removed 109 redundant places. [2022-07-13 22:04:58,843 INFO L242 Difference]: Finished difference. Result has 361 places, 296 transitions, 901 flow [2022-07-13 22:04:58,843 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=901, PETRI_PLACES=361, PETRI_TRANSITIONS=296} [2022-07-13 22:04:58,844 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 105 predicate places. [2022-07-13 22:04:58,844 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 296 transitions, 901 flow [2022-07-13 22:04:58,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states 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 22:04:58,844 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:58,844 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:58,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 22:04:58,845 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:58,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:58,845 INFO L85 PathProgramCache]: Analyzing trace with hash -907990915, now seen corresponding path program 1 times [2022-07-13 22:04:58,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:58,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288459221] [2022-07-13 22:04:58,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:58,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:58,899 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 22:04:58,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:58,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288459221] [2022-07-13 22:04:58,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288459221] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:58,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:58,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:04:58,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208349397] [2022-07-13 22:04:58,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:58,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:04:58,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:58,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:04:58,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:04:58,902 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 286 [2022-07-13 22:04:58,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 296 transitions, 901 flow. Second operand has 7 states, 7 states have (on average 255.85714285714286) internal successors, (1791), 7 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states 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 22:04:58,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:58,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 286 [2022-07-13 22:04:58,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:59,201 INFO L129 PetriNetUnfolder]: 152/1989 cut-off events. [2022-07-13 22:04:59,201 INFO L130 PetriNetUnfolder]: For 731/816 co-relation queries the response was YES. [2022-07-13 22:04:59,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3436 conditions, 1989 events. 152/1989 cut-off events. For 731/816 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 19805 event pairs, 33 based on Foata normal form. 6/1863 useless extension candidates. Maximal degree in co-relation 3349. Up to 119 conditions per place. [2022-07-13 22:04:59,223 INFO L132 encePairwiseOnDemand]: 278/286 looper letters, 22 selfloop transitions, 2 changer transitions 34/316 dead transitions. [2022-07-13 22:04:59,223 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 316 transitions, 1038 flow [2022-07-13 22:04:59,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:04:59,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:04:59,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2320 transitions. [2022-07-13 22:04:59,224 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9013209013209014 [2022-07-13 22:04:59,224 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2320 transitions. [2022-07-13 22:04:59,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2320 transitions. [2022-07-13 22:04:59,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:59,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2320 transitions. [2022-07-13 22:04:59,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 257.77777777777777) internal successors, (2320), 9 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states 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 22:04:59,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 286.0) internal successors, (2860), 10 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states 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 22:04:59,233 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 286.0) internal successors, (2860), 10 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states 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 22:04:59,233 INFO L186 Difference]: Start difference. First operand has 361 places, 296 transitions, 901 flow. Second operand 9 states and 2320 transitions. [2022-07-13 22:04:59,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 316 transitions, 1038 flow [2022-07-13 22:04:59,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 316 transitions, 1020 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-07-13 22:04:59,244 INFO L242 Difference]: Finished difference. Result has 369 places, 280 transitions, 800 flow [2022-07-13 22:04:59,245 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=800, PETRI_PLACES=369, PETRI_TRANSITIONS=280} [2022-07-13 22:04:59,247 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 113 predicate places. [2022-07-13 22:04:59,247 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 280 transitions, 800 flow [2022-07-13 22:04:59,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 255.85714285714286) internal successors, (1791), 7 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states 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 22:04:59,247 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:59,248 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:59,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 22:04:59,248 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:59,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:59,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1579618614, now seen corresponding path program 1 times [2022-07-13 22:04:59,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:59,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508179607] [2022-07-13 22:04:59,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:59,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:59,326 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 22:04:59,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:59,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508179607] [2022-07-13 22:04:59,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508179607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:59,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:59,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:59,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730916000] [2022-07-13 22:04:59,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:59,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:59,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:59,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:59,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:59,329 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:04:59,330 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 280 transitions, 800 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:59,330 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:59,330 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:04:59,330 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:59,876 INFO L129 PetriNetUnfolder]: 542/2633 cut-off events. [2022-07-13 22:04:59,876 INFO L130 PetriNetUnfolder]: For 1615/1670 co-relation queries the response was YES. [2022-07-13 22:04:59,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5529 conditions, 2633 events. 542/2633 cut-off events. For 1615/1670 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 25819 event pairs, 210 based on Foata normal form. 13/2534 useless extension candidates. Maximal degree in co-relation 5438. Up to 542 conditions per place. [2022-07-13 22:04:59,945 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 86 selfloop transitions, 33 changer transitions 28/388 dead transitions. [2022-07-13 22:04:59,946 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 388 transitions, 1537 flow [2022-07-13 22:04:59,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:04:59,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 22:04:59,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6014 transitions. [2022-07-13 22:04:59,948 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8761655011655012 [2022-07-13 22:04:59,949 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6014 transitions. [2022-07-13 22:04:59,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6014 transitions. [2022-07-13 22:04:59,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:59,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6014 transitions. [2022-07-13 22:04:59,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 250.58333333333334) internal successors, (6014), 24 states have internal predecessors, (6014), 0 states have call successors, (0), 0 states 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 22:04:59,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states 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 22:04:59,956 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states 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 22:04:59,956 INFO L186 Difference]: Start difference. First operand has 369 places, 280 transitions, 800 flow. Second operand 24 states and 6014 transitions. [2022-07-13 22:04:59,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 388 transitions, 1537 flow [2022-07-13 22:04:59,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 388 transitions, 1419 flow, removed 53 selfloop flow, removed 17 redundant places. [2022-07-13 22:04:59,970 INFO L242 Difference]: Finished difference. Result has 378 places, 310 transitions, 1034 flow [2022-07-13 22:04:59,970 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1034, PETRI_PLACES=378, PETRI_TRANSITIONS=310} [2022-07-13 22:04:59,970 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 122 predicate places. [2022-07-13 22:04:59,971 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 310 transitions, 1034 flow [2022-07-13 22:04:59,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:04:59,971 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:59,971 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:59,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 22:04:59,971 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:59,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:59,972 INFO L85 PathProgramCache]: Analyzing trace with hash -786092190, now seen corresponding path program 2 times [2022-07-13 22:04:59,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:59,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521523919] [2022-07-13 22:04:59,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:59,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:00,040 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 22:05:00,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:00,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521523919] [2022-07-13 22:05:00,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521523919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:00,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:00,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:00,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142983910] [2022-07-13 22:05:00,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:00,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:00,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:00,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:00,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:00,045 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:05:00,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 310 transitions, 1034 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:00,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:00,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:05:00,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:00,635 INFO L129 PetriNetUnfolder]: 615/3018 cut-off events. [2022-07-13 22:05:00,635 INFO L130 PetriNetUnfolder]: For 4408/4463 co-relation queries the response was YES. [2022-07-13 22:05:00,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7623 conditions, 3018 events. 615/3018 cut-off events. For 4408/4463 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 30619 event pairs, 288 based on Foata normal form. 5/2890 useless extension candidates. Maximal degree in co-relation 7528. Up to 777 conditions per place. [2022-07-13 22:05:00,663 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 85 selfloop transitions, 36 changer transitions 16/378 dead transitions. [2022-07-13 22:05:00,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 378 transitions, 1747 flow [2022-07-13 22:05:00,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:05:00,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:05:00,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4014 transitions. [2022-07-13 22:05:00,665 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8771853146853147 [2022-07-13 22:05:00,665 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4014 transitions. [2022-07-13 22:05:00,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4014 transitions. [2022-07-13 22:05:00,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:00,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4014 transitions. [2022-07-13 22:05:00,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 250.875) internal successors, (4014), 16 states have internal predecessors, (4014), 0 states have call successors, (0), 0 states 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 22:05:00,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states 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 22:05:00,670 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states 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 22:05:00,670 INFO L186 Difference]: Start difference. First operand has 378 places, 310 transitions, 1034 flow. Second operand 16 states and 4014 transitions. [2022-07-13 22:05:00,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 378 transitions, 1747 flow [2022-07-13 22:05:00,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 378 transitions, 1707 flow, removed 20 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:00,692 INFO L242 Difference]: Finished difference. Result has 400 places, 334 transitions, 1390 flow [2022-07-13 22:05:00,692 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1390, PETRI_PLACES=400, PETRI_TRANSITIONS=334} [2022-07-13 22:05:00,692 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 144 predicate places. [2022-07-13 22:05:00,693 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 334 transitions, 1390 flow [2022-07-13 22:05:00,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:00,693 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:00,693 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:00,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-13 22:05:00,693 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:00,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:00,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1945375624, now seen corresponding path program 3 times [2022-07-13 22:05:00,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:00,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583286716] [2022-07-13 22:05:00,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:00,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:00,760 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 22:05:00,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:00,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583286716] [2022-07-13 22:05:00,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583286716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:00,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:00,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:00,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383118255] [2022-07-13 22:05:00,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:00,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:00,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:00,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:00,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:00,763 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:05:00,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 334 transitions, 1390 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:00,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:00,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:05:00,764 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:01,433 INFO L129 PetriNetUnfolder]: 681/3388 cut-off events. [2022-07-13 22:05:01,433 INFO L130 PetriNetUnfolder]: For 8686/8770 co-relation queries the response was YES. [2022-07-13 22:05:01,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9701 conditions, 3388 events. 681/3388 cut-off events. For 8686/8770 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 35589 event pairs, 258 based on Foata normal form. 17/3285 useless extension candidates. Maximal degree in co-relation 9596. Up to 755 conditions per place. [2022-07-13 22:05:01,467 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 108 selfloop transitions, 45 changer transitions 14/408 dead transitions. [2022-07-13 22:05:01,467 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 408 transitions, 2367 flow [2022-07-13 22:05:01,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:05:01,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:05:01,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4013 transitions. [2022-07-13 22:05:01,469 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8769667832167832 [2022-07-13 22:05:01,469 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4013 transitions. [2022-07-13 22:05:01,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4013 transitions. [2022-07-13 22:05:01,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:01,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4013 transitions. [2022-07-13 22:05:01,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 250.8125) internal successors, (4013), 16 states have internal predecessors, (4013), 0 states have call successors, (0), 0 states 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 22:05:01,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states 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 22:05:01,475 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states 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 22:05:01,475 INFO L186 Difference]: Start difference. First operand has 400 places, 334 transitions, 1390 flow. Second operand 16 states and 4013 transitions. [2022-07-13 22:05:01,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 408 transitions, 2367 flow [2022-07-13 22:05:01,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 408 transitions, 2133 flow, removed 117 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:01,543 INFO L242 Difference]: Finished difference. Result has 421 places, 354 transitions, 1617 flow [2022-07-13 22:05:01,544 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1617, PETRI_PLACES=421, PETRI_TRANSITIONS=354} [2022-07-13 22:05:01,544 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 165 predicate places. [2022-07-13 22:05:01,544 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 354 transitions, 1617 flow [2022-07-13 22:05:01,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:01,544 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:01,545 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:01,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-13 22:05:01,545 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:01,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:01,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1166211374, now seen corresponding path program 4 times [2022-07-13 22:05:01,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:01,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47827406] [2022-07-13 22:05:01,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:01,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:01,636 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 22:05:01,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:01,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47827406] [2022-07-13 22:05:01,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47827406] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:01,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:01,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:01,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988647152] [2022-07-13 22:05:01,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:01,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:01,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:01,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:01,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:01,638 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:05:01,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 354 transitions, 1617 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:01,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:01,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:05:01,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:02,378 INFO L129 PetriNetUnfolder]: 823/3777 cut-off events. [2022-07-13 22:05:02,378 INFO L130 PetriNetUnfolder]: For 12022/12086 co-relation queries the response was YES. [2022-07-13 22:05:02,441 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11806 conditions, 3777 events. 823/3777 cut-off events. For 12022/12086 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 40531 event pairs, 290 based on Foata normal form. 11/3654 useless extension candidates. Maximal degree in co-relation 11692. Up to 806 conditions per place. [2022-07-13 22:05:02,457 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 130 selfloop transitions, 50 changer transitions 23/444 dead transitions. [2022-07-13 22:05:02,457 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 444 transitions, 2880 flow [2022-07-13 22:05:02,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:05:02,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-13 22:05:02,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5260 transitions. [2022-07-13 22:05:02,460 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8757908757908758 [2022-07-13 22:05:02,460 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5260 transitions. [2022-07-13 22:05:02,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5260 transitions. [2022-07-13 22:05:02,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:02,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5260 transitions. [2022-07-13 22:05:02,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 250.47619047619048) internal successors, (5260), 21 states have internal predecessors, (5260), 0 states have call successors, (0), 0 states 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 22:05:02,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states 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 22:05:02,468 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states 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 22:05:02,468 INFO L186 Difference]: Start difference. First operand has 421 places, 354 transitions, 1617 flow. Second operand 21 states and 5260 transitions. [2022-07-13 22:05:02,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 444 transitions, 2880 flow [2022-07-13 22:05:02,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 444 transitions, 2738 flow, removed 63 selfloop flow, removed 3 redundant places. [2022-07-13 22:05:02,539 INFO L242 Difference]: Finished difference. Result has 451 places, 388 transitions, 2180 flow [2022-07-13 22:05:02,539 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2180, PETRI_PLACES=451, PETRI_TRANSITIONS=388} [2022-07-13 22:05:02,539 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 195 predicate places. [2022-07-13 22:05:02,539 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 388 transitions, 2180 flow [2022-07-13 22:05:02,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:02,540 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:02,540 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:02,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-13 22:05:02,540 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:02,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:02,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1140547886, now seen corresponding path program 5 times [2022-07-13 22:05:02,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:02,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833192023] [2022-07-13 22:05:02,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:02,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:02,608 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 22:05:02,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:02,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833192023] [2022-07-13 22:05:02,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833192023] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:02,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:02,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:02,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099544211] [2022-07-13 22:05:02,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:02,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:02,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:02,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:02,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:02,612 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:05:02,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 388 transitions, 2180 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:02,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:02,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:05:02,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:03,642 INFO L129 PetriNetUnfolder]: 866/4126 cut-off events. [2022-07-13 22:05:03,642 INFO L130 PetriNetUnfolder]: For 19476/19571 co-relation queries the response was YES. [2022-07-13 22:05:03,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13849 conditions, 4126 events. 866/4126 cut-off events. For 19476/19571 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 45730 event pairs, 338 based on Foata normal form. 13/4004 useless extension candidates. Maximal degree in co-relation 13722. Up to 915 conditions per place. [2022-07-13 22:05:03,724 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 141 selfloop transitions, 60 changer transitions 22/464 dead transitions. [2022-07-13 22:05:03,724 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 464 transitions, 3468 flow [2022-07-13 22:05:03,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:05:03,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-13 22:05:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5010 transitions. [2022-07-13 22:05:03,727 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8758741258741258 [2022-07-13 22:05:03,727 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5010 transitions. [2022-07-13 22:05:03,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5010 transitions. [2022-07-13 22:05:03,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:03,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5010 transitions. [2022-07-13 22:05:03,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 250.5) internal successors, (5010), 20 states have internal predecessors, (5010), 0 states have call successors, (0), 0 states 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 22:05:03,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states 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 22:05:03,734 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states 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 22:05:03,734 INFO L186 Difference]: Start difference. First operand has 451 places, 388 transitions, 2180 flow. Second operand 20 states and 5010 transitions. [2022-07-13 22:05:03,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 464 transitions, 3468 flow [2022-07-13 22:05:03,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 464 transitions, 3146 flow, removed 161 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:03,866 INFO L242 Difference]: Finished difference. Result has 481 places, 420 transitions, 2621 flow [2022-07-13 22:05:03,867 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1942, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2621, PETRI_PLACES=481, PETRI_TRANSITIONS=420} [2022-07-13 22:05:03,867 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 225 predicate places. [2022-07-13 22:05:03,867 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 420 transitions, 2621 flow [2022-07-13 22:05:03,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:03,868 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:03,868 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:03,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-13 22:05:03,868 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:03,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:03,868 INFO L85 PathProgramCache]: Analyzing trace with hash -901525818, now seen corresponding path program 6 times [2022-07-13 22:05:03,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:03,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532602529] [2022-07-13 22:05:03,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:03,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:03,928 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 22:05:03,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:03,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532602529] [2022-07-13 22:05:03,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532602529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:03,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:03,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:03,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875141646] [2022-07-13 22:05:03,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:03,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:03,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:03,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:03,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:03,931 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:05:03,932 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 420 transitions, 2621 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:03,932 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:03,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:05:03,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:04,959 INFO L129 PetriNetUnfolder]: 911/4512 cut-off events. [2022-07-13 22:05:04,959 INFO L130 PetriNetUnfolder]: For 23643/23734 co-relation queries the response was YES. [2022-07-13 22:05:05,013 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15256 conditions, 4512 events. 911/4512 cut-off events. For 23643/23734 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 51143 event pairs, 278 based on Foata normal form. 5/4391 useless extension candidates. Maximal degree in co-relation 15115. Up to 682 conditions per place. [2022-07-13 22:05:05,025 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 155 selfloop transitions, 103 changer transitions 26/525 dead transitions. [2022-07-13 22:05:05,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 525 transitions, 4189 flow [2022-07-13 22:05:05,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:05:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 22:05:05,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6006 transitions. [2022-07-13 22:05:05,028 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-07-13 22:05:05,028 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6006 transitions. [2022-07-13 22:05:05,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6006 transitions. [2022-07-13 22:05:05,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:05,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6006 transitions. [2022-07-13 22:05:05,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 250.25) internal successors, (6006), 24 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states 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 22:05:05,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states 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 22:05:05,035 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states 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 22:05:05,035 INFO L186 Difference]: Start difference. First operand has 481 places, 420 transitions, 2621 flow. Second operand 24 states and 6006 transitions. [2022-07-13 22:05:05,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 525 transitions, 4189 flow [2022-07-13 22:05:05,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 525 transitions, 3891 flow, removed 149 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:05,179 INFO L242 Difference]: Finished difference. Result has 519 places, 446 transitions, 3131 flow [2022-07-13 22:05:05,180 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=2401, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3131, PETRI_PLACES=519, PETRI_TRANSITIONS=446} [2022-07-13 22:05:05,180 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 263 predicate places. [2022-07-13 22:05:05,180 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 446 transitions, 3131 flow [2022-07-13 22:05:05,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:05,181 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:05,181 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:05,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-13 22:05:05,181 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:05,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:05,182 INFO L85 PathProgramCache]: Analyzing trace with hash 248170924, now seen corresponding path program 7 times [2022-07-13 22:05:05,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:05,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838537070] [2022-07-13 22:05:05,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:05,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:05,258 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 22:05:05,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:05,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838537070] [2022-07-13 22:05:05,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838537070] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:05,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:05,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:05,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875624429] [2022-07-13 22:05:05,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:05,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:05,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:05,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:05,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:05,260 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:05:05,261 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 446 transitions, 3131 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:05,261 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:05,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:05:05,261 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:06,286 INFO L129 PetriNetUnfolder]: 948/4628 cut-off events. [2022-07-13 22:05:06,286 INFO L130 PetriNetUnfolder]: For 29324/29435 co-relation queries the response was YES. [2022-07-13 22:05:06,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16648 conditions, 4628 events. 948/4628 cut-off events. For 29324/29435 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 52858 event pairs, 270 based on Foata normal form. 44/4553 useless extension candidates. Maximal degree in co-relation 16489. Up to 938 conditions per place. [2022-07-13 22:05:06,383 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 166 selfloop transitions, 97 changer transitions 24/528 dead transitions. [2022-07-13 22:05:06,383 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 528 transitions, 4648 flow [2022-07-13 22:05:06,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:05:06,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-13 22:05:06,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5506 transitions. [2022-07-13 22:05:06,386 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8750794659885569 [2022-07-13 22:05:06,386 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5506 transitions. [2022-07-13 22:05:06,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5506 transitions. [2022-07-13 22:05:06,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:06,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5506 transitions. [2022-07-13 22:05:06,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 250.27272727272728) internal successors, (5506), 22 states have internal predecessors, (5506), 0 states have call successors, (0), 0 states 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 22:05:06,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states 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 22:05:06,394 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states 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 22:05:06,394 INFO L186 Difference]: Start difference. First operand has 519 places, 446 transitions, 3131 flow. Second operand 22 states and 5506 transitions. [2022-07-13 22:05:06,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 528 transitions, 4648 flow [2022-07-13 22:05:06,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 528 transitions, 4592 flow, removed 25 selfloop flow, removed 3 redundant places. [2022-07-13 22:05:06,556 INFO L242 Difference]: Finished difference. Result has 548 places, 470 transitions, 3797 flow [2022-07-13 22:05:06,556 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=3081, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3797, PETRI_PLACES=548, PETRI_TRANSITIONS=470} [2022-07-13 22:05:06,556 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 292 predicate places. [2022-07-13 22:05:06,557 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 470 transitions, 3797 flow [2022-07-13 22:05:06,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:06,557 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:06,557 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:06,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-13 22:05:06,557 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:06,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:06,558 INFO L85 PathProgramCache]: Analyzing trace with hash -2133888762, now seen corresponding path program 8 times [2022-07-13 22:05:06,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:06,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599632956] [2022-07-13 22:05:06,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:06,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:06,633 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 22:05:06,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:06,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599632956] [2022-07-13 22:05:06,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599632956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:06,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:06,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:06,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267012558] [2022-07-13 22:05:06,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:06,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:06,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:06,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:06,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:06,636 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:05:06,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 470 transitions, 3797 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:06,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:06,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:05:06,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:07,780 INFO L129 PetriNetUnfolder]: 986/5066 cut-off events. [2022-07-13 22:05:07,780 INFO L130 PetriNetUnfolder]: For 40377/40480 co-relation queries the response was YES. [2022-07-13 22:05:07,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18978 conditions, 5066 events. 986/5066 cut-off events. For 40377/40480 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 59798 event pairs, 304 based on Foata normal form. 7/4947 useless extension candidates. Maximal degree in co-relation 18808. Up to 1042 conditions per place. [2022-07-13 22:05:07,882 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 182 selfloop transitions, 105 changer transitions 19/547 dead transitions. [2022-07-13 22:05:07,882 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 547 transitions, 5377 flow [2022-07-13 22:05:07,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:05:07,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-13 22:05:07,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5007 transitions. [2022-07-13 22:05:07,884 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8753496503496504 [2022-07-13 22:05:07,884 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5007 transitions. [2022-07-13 22:05:07,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5007 transitions. [2022-07-13 22:05:07,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:07,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5007 transitions. [2022-07-13 22:05:07,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 250.35) internal successors, (5007), 20 states have internal predecessors, (5007), 0 states have call successors, (0), 0 states 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 22:05:07,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states 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 22:05:07,890 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states 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 22:05:07,890 INFO L186 Difference]: Start difference. First operand has 548 places, 470 transitions, 3797 flow. Second operand 20 states and 5007 transitions. [2022-07-13 22:05:07,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 547 transitions, 5377 flow [2022-07-13 22:05:08,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 547 transitions, 5172 flow, removed 95 selfloop flow, removed 4 redundant places. [2022-07-13 22:05:08,097 INFO L242 Difference]: Finished difference. Result has 575 places, 502 transitions, 4598 flow [2022-07-13 22:05:08,097 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=3598, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4598, PETRI_PLACES=575, PETRI_TRANSITIONS=502} [2022-07-13 22:05:08,097 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 319 predicate places. [2022-07-13 22:05:08,097 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 502 transitions, 4598 flow [2022-07-13 22:05:08,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:08,098 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:08,098 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:08,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-13 22:05:08,098 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:08,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:08,098 INFO L85 PathProgramCache]: Analyzing trace with hash -346353438, now seen corresponding path program 9 times [2022-07-13 22:05:08,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:08,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825816713] [2022-07-13 22:05:08,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:08,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:08,177 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 22:05:08,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:08,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825816713] [2022-07-13 22:05:08,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825816713] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:08,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:08,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:08,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876962761] [2022-07-13 22:05:08,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:08,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:08,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:08,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:08,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:08,179 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:05:08,180 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 502 transitions, 4598 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:08,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:08,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:05:08,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:09,444 INFO L129 PetriNetUnfolder]: 984/5061 cut-off events. [2022-07-13 22:05:09,444 INFO L130 PetriNetUnfolder]: For 43473/43582 co-relation queries the response was YES. [2022-07-13 22:05:09,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19609 conditions, 5061 events. 984/5061 cut-off events. For 43473/43582 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 59652 event pairs, 277 based on Foata normal form. 36/4978 useless extension candidates. Maximal degree in co-relation 19428. Up to 1036 conditions per place. [2022-07-13 22:05:09,519 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 183 selfloop transitions, 116 changer transitions 23/563 dead transitions. [2022-07-13 22:05:09,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 563 transitions, 6039 flow [2022-07-13 22:05:09,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:09,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:09,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4510 transitions. [2022-07-13 22:05:09,521 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8760683760683761 [2022-07-13 22:05:09,522 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4510 transitions. [2022-07-13 22:05:09,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4510 transitions. [2022-07-13 22:05:09,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:09,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4510 transitions. [2022-07-13 22:05:09,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.55555555555554) internal successors, (4510), 18 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states 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 22:05:09,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:05:09,527 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:05:09,527 INFO L186 Difference]: Start difference. First operand has 575 places, 502 transitions, 4598 flow. Second operand 18 states and 4510 transitions. [2022-07-13 22:05:09,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 563 transitions, 6039 flow [2022-07-13 22:05:09,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 563 transitions, 5647 flow, removed 196 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:09,754 INFO L242 Difference]: Finished difference. Result has 595 places, 511 transitions, 4848 flow [2022-07-13 22:05:09,754 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=4380, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4848, PETRI_PLACES=595, PETRI_TRANSITIONS=511} [2022-07-13 22:05:09,754 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 339 predicate places. [2022-07-13 22:05:09,755 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 511 transitions, 4848 flow [2022-07-13 22:05:09,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:09,755 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:09,755 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:09,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-13 22:05:09,755 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:09,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:09,756 INFO L85 PathProgramCache]: Analyzing trace with hash -334517014, now seen corresponding path program 10 times [2022-07-13 22:05:09,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:09,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523319048] [2022-07-13 22:05:09,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:09,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:09,815 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 22:05:09,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:09,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523319048] [2022-07-13 22:05:09,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523319048] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:09,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:09,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:09,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398005910] [2022-07-13 22:05:09,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:09,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:09,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:09,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:09,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:09,818 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:05:09,819 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 511 transitions, 4848 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:09,819 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:09,819 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:05:09,819 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:11,081 INFO L129 PetriNetUnfolder]: 1039/5459 cut-off events. [2022-07-13 22:05:11,081 INFO L130 PetriNetUnfolder]: For 39573/39669 co-relation queries the response was YES. [2022-07-13 22:05:11,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20969 conditions, 5459 events. 1039/5459 cut-off events. For 39573/39669 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 65759 event pairs, 293 based on Foata normal form. 17/5345 useless extension candidates. Maximal degree in co-relation 20782. Up to 1085 conditions per place. [2022-07-13 22:05:11,197 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 201 selfloop transitions, 116 changer transitions 16/574 dead transitions. [2022-07-13 22:05:11,197 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 574 transitions, 6321 flow [2022-07-13 22:05:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:11,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:11,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4264 transitions. [2022-07-13 22:05:11,199 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8770053475935828 [2022-07-13 22:05:11,199 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4264 transitions. [2022-07-13 22:05:11,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4264 transitions. [2022-07-13 22:05:11,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:11,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4264 transitions. [2022-07-13 22:05:11,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.8235294117647) internal successors, (4264), 17 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states 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 22:05:11,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states 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 22:05:11,204 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states 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 22:05:11,204 INFO L186 Difference]: Start difference. First operand has 595 places, 511 transitions, 4848 flow. Second operand 17 states and 4264 transitions. [2022-07-13 22:05:11,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 574 transitions, 6321 flow [2022-07-13 22:05:11,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 574 transitions, 6135 flow, removed 46 selfloop flow, removed 6 redundant places. [2022-07-13 22:05:11,449 INFO L242 Difference]: Finished difference. Result has 611 places, 533 transitions, 5475 flow [2022-07-13 22:05:11,449 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=4676, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5475, PETRI_PLACES=611, PETRI_TRANSITIONS=533} [2022-07-13 22:05:11,450 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 355 predicate places. [2022-07-13 22:05:11,450 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 533 transitions, 5475 flow [2022-07-13 22:05:11,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:11,450 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:11,450 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:11,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-13 22:05:11,451 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:11,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:11,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1229374306, now seen corresponding path program 11 times [2022-07-13 22:05:11,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:11,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112829933] [2022-07-13 22:05:11,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:11,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:11,519 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 22:05:11,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:11,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112829933] [2022-07-13 22:05:11,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112829933] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:11,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:11,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:11,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191089813] [2022-07-13 22:05:11,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:11,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:11,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:11,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:11,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:11,522 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:05:11,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 533 transitions, 5475 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:11,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:11,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:05:11,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:12,939 INFO L129 PetriNetUnfolder]: 1074/5675 cut-off events. [2022-07-13 22:05:12,939 INFO L130 PetriNetUnfolder]: For 44016/44115 co-relation queries the response was YES. [2022-07-13 22:05:13,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22575 conditions, 5675 events. 1074/5675 cut-off events. For 44016/44115 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 69001 event pairs, 299 based on Foata normal form. 17/5561 useless extension candidates. Maximal degree in co-relation 22383. Up to 1141 conditions per place. [2022-07-13 22:05:13,049 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 224 selfloop transitions, 112 changer transitions 15/592 dead transitions. [2022-07-13 22:05:13,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 592 transitions, 6963 flow [2022-07-13 22:05:13,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:13,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:13,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4264 transitions. [2022-07-13 22:05:13,051 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8770053475935828 [2022-07-13 22:05:13,051 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4264 transitions. [2022-07-13 22:05:13,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4264 transitions. [2022-07-13 22:05:13,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:13,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4264 transitions. [2022-07-13 22:05:13,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.8235294117647) internal successors, (4264), 17 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states 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 22:05:13,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states 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 22:05:13,056 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states 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 22:05:13,056 INFO L186 Difference]: Start difference. First operand has 611 places, 533 transitions, 5475 flow. Second operand 17 states and 4264 transitions. [2022-07-13 22:05:13,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 592 transitions, 6963 flow [2022-07-13 22:05:13,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 592 transitions, 6791 flow, removed 86 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:13,303 INFO L242 Difference]: Finished difference. Result has 631 places, 555 transitions, 6088 flow [2022-07-13 22:05:13,304 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=5309, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6088, PETRI_PLACES=631, PETRI_TRANSITIONS=555} [2022-07-13 22:05:13,304 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 375 predicate places. [2022-07-13 22:05:13,304 INFO L495 AbstractCegarLoop]: Abstraction has has 631 places, 555 transitions, 6088 flow [2022-07-13 22:05:13,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:13,305 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:13,305 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:13,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-13 22:05:13,305 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:13,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:13,305 INFO L85 PathProgramCache]: Analyzing trace with hash -629493838, now seen corresponding path program 12 times [2022-07-13 22:05:13,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:13,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33281468] [2022-07-13 22:05:13,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:13,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:13,365 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 22:05:13,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:13,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33281468] [2022-07-13 22:05:13,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33281468] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:13,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:13,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:13,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720624831] [2022-07-13 22:05:13,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:13,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:13,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:13,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:13,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:13,368 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:05:13,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 555 transitions, 6088 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:13,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:13,369 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:05:13,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:14,834 INFO L129 PetriNetUnfolder]: 1079/5884 cut-off events. [2022-07-13 22:05:14,834 INFO L130 PetriNetUnfolder]: For 47175/47274 co-relation queries the response was YES. [2022-07-13 22:05:14,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23383 conditions, 5884 events. 1079/5884 cut-off events. For 47175/47274 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 72537 event pairs, 301 based on Foata normal form. 17/5770 useless extension candidates. Maximal degree in co-relation 23184. Up to 1163 conditions per place. [2022-07-13 22:05:14,970 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 209 selfloop transitions, 130 changer transitions 20/600 dead transitions. [2022-07-13 22:05:14,971 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 600 transitions, 7258 flow [2022-07-13 22:05:14,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:14,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:14,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4510 transitions. [2022-07-13 22:05:14,973 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8760683760683761 [2022-07-13 22:05:14,973 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4510 transitions. [2022-07-13 22:05:14,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4510 transitions. [2022-07-13 22:05:14,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:14,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4510 transitions. [2022-07-13 22:05:14,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.55555555555554) internal successors, (4510), 18 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states 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 22:05:14,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:05:14,978 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:05:14,978 INFO L186 Difference]: Start difference. First operand has 631 places, 555 transitions, 6088 flow. Second operand 18 states and 4510 transitions. [2022-07-13 22:05:14,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 600 transitions, 7258 flow [2022-07-13 22:05:15,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 643 places, 600 transitions, 7063 flow, removed 71 selfloop flow, removed 3 redundant places. [2022-07-13 22:05:15,286 INFO L242 Difference]: Finished difference. Result has 648 places, 565 transitions, 6411 flow [2022-07-13 22:05:15,286 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=5901, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6411, PETRI_PLACES=648, PETRI_TRANSITIONS=565} [2022-07-13 22:05:15,287 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 392 predicate places. [2022-07-13 22:05:15,287 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 565 transitions, 6411 flow [2022-07-13 22:05:15,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:15,287 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:15,287 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:15,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-13 22:05:15,288 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:15,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:15,288 INFO L85 PathProgramCache]: Analyzing trace with hash 662031482, now seen corresponding path program 13 times [2022-07-13 22:05:15,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:15,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674556811] [2022-07-13 22:05:15,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:15,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:15,369 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 22:05:15,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:15,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674556811] [2022-07-13 22:05:15,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674556811] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:15,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:15,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:15,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328222297] [2022-07-13 22:05:15,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:15,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:15,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:15,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:15,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:15,372 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:05:15,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 565 transitions, 6411 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:15,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:15,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:05:15,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:16,919 INFO L129 PetriNetUnfolder]: 1078/5857 cut-off events. [2022-07-13 22:05:16,919 INFO L130 PetriNetUnfolder]: For 50508/50608 co-relation queries the response was YES. [2022-07-13 22:05:17,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23524 conditions, 5857 events. 1078/5857 cut-off events. For 50508/50608 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 72518 event pairs, 319 based on Foata normal form. 7/5737 useless extension candidates. Maximal degree in co-relation 23322. Up to 1153 conditions per place. [2022-07-13 22:05:17,041 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 224 selfloop transitions, 119 changer transitions 24/608 dead transitions. [2022-07-13 22:05:17,041 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 608 transitions, 7556 flow [2022-07-13 22:05:17,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:17,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:17,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4514 transitions. [2022-07-13 22:05:17,044 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8768453768453769 [2022-07-13 22:05:17,044 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4514 transitions. [2022-07-13 22:05:17,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4514 transitions. [2022-07-13 22:05:17,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:17,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4514 transitions. [2022-07-13 22:05:17,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.77777777777777) internal successors, (4514), 18 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states 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 22:05:17,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:05:17,049 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:05:17,049 INFO L186 Difference]: Start difference. First operand has 648 places, 565 transitions, 6411 flow. Second operand 18 states and 4514 transitions. [2022-07-13 22:05:17,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 663 places, 608 transitions, 7556 flow [2022-07-13 22:05:17,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 608 transitions, 7406 flow, removed 39 selfloop flow, removed 7 redundant places. [2022-07-13 22:05:17,354 INFO L242 Difference]: Finished difference. Result has 661 places, 572 transitions, 6723 flow [2022-07-13 22:05:17,355 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=6267, PETRI_DIFFERENCE_MINUEND_PLACES=639, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6723, PETRI_PLACES=661, PETRI_TRANSITIONS=572} [2022-07-13 22:05:17,355 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 405 predicate places. [2022-07-13 22:05:17,355 INFO L495 AbstractCegarLoop]: Abstraction has has 661 places, 572 transitions, 6723 flow [2022-07-13 22:05:17,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:17,356 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:17,356 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:17,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-13 22:05:17,356 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:17,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:17,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1066973114, now seen corresponding path program 14 times [2022-07-13 22:05:17,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:17,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746448246] [2022-07-13 22:05:17,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:17,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:17,419 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 22:05:17,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:17,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746448246] [2022-07-13 22:05:17,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746448246] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:17,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:17,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:17,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982656529] [2022-07-13 22:05:17,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:17,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:17,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:17,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:17,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:17,422 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:05:17,423 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 661 places, 572 transitions, 6723 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:17,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:17,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:05:17,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:19,130 INFO L129 PetriNetUnfolder]: 1134/6343 cut-off events. [2022-07-13 22:05:19,130 INFO L130 PetriNetUnfolder]: For 58353/58452 co-relation queries the response was YES. [2022-07-13 22:05:19,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25338 conditions, 6343 events. 1134/6343 cut-off events. For 58353/58452 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 79870 event pairs, 350 based on Foata normal form. 5/6220 useless extension candidates. Maximal degree in co-relation 25137. Up to 1190 conditions per place. [2022-07-13 22:05:19,281 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 221 selfloop transitions, 156 changer transitions 23/641 dead transitions. [2022-07-13 22:05:19,281 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 680 places, 641 transitions, 8351 flow [2022-07-13 22:05:19,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:05:19,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-13 22:05:19,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5502 transitions. [2022-07-13 22:05:19,285 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8744437380801017 [2022-07-13 22:05:19,285 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5502 transitions. [2022-07-13 22:05:19,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5502 transitions. [2022-07-13 22:05:19,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:19,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5502 transitions. [2022-07-13 22:05:19,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 250.0909090909091) internal successors, (5502), 22 states have internal predecessors, (5502), 0 states have call successors, (0), 0 states 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 22:05:19,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states 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 22:05:19,293 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states 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 22:05:19,293 INFO L186 Difference]: Start difference. First operand has 661 places, 572 transitions, 6723 flow. Second operand 22 states and 5502 transitions. [2022-07-13 22:05:19,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 680 places, 641 transitions, 8351 flow [2022-07-13 22:05:19,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 672 places, 641 transitions, 8198 flow, removed 63 selfloop flow, removed 8 redundant places. [2022-07-13 22:05:19,682 INFO L242 Difference]: Finished difference. Result has 686 places, 600 transitions, 7493 flow [2022-07-13 22:05:19,683 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=6572, PETRI_DIFFERENCE_MINUEND_PLACES=651, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7493, PETRI_PLACES=686, PETRI_TRANSITIONS=600} [2022-07-13 22:05:19,683 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 430 predicate places. [2022-07-13 22:05:19,683 INFO L495 AbstractCegarLoop]: Abstraction has has 686 places, 600 transitions, 7493 flow [2022-07-13 22:05:19,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:19,684 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:19,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:19,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-13 22:05:19,685 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:19,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:19,685 INFO L85 PathProgramCache]: Analyzing trace with hash 943816632, now seen corresponding path program 15 times [2022-07-13 22:05:19,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:19,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256002570] [2022-07-13 22:05:19,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:19,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:19,764 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 22:05:19,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:19,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256002570] [2022-07-13 22:05:19,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256002570] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:19,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:19,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:19,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163582250] [2022-07-13 22:05:19,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:19,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:19,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:19,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:19,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:19,767 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:05:19,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 686 places, 600 transitions, 7493 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:19,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:19,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:05:19,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:21,515 INFO L129 PetriNetUnfolder]: 1168/6602 cut-off events. [2022-07-13 22:05:21,515 INFO L130 PetriNetUnfolder]: For 67113/67204 co-relation queries the response was YES. [2022-07-13 22:05:21,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27249 conditions, 6602 events. 1168/6602 cut-off events. For 67113/67204 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 84109 event pairs, 395 based on Foata normal form. 5/6472 useless extension candidates. Maximal degree in co-relation 27041. Up to 1229 conditions per place. [2022-07-13 22:05:21,663 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 292 selfloop transitions, 110 changer transitions 21/664 dead transitions. [2022-07-13 22:05:21,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 704 places, 664 transitions, 9282 flow [2022-07-13 22:05:21,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:05:21,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-13 22:05:21,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5256 transitions. [2022-07-13 22:05:21,665 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8751248751248751 [2022-07-13 22:05:21,665 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5256 transitions. [2022-07-13 22:05:21,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5256 transitions. [2022-07-13 22:05:21,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:21,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5256 transitions. [2022-07-13 22:05:21,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 250.28571428571428) internal successors, (5256), 21 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states 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 22:05:21,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states 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 22:05:21,671 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states 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 22:05:21,671 INFO L186 Difference]: Start difference. First operand has 686 places, 600 transitions, 7493 flow. Second operand 21 states and 5256 transitions. [2022-07-13 22:05:21,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 704 places, 664 transitions, 9282 flow [2022-07-13 22:05:22,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 702 places, 664 transitions, 9196 flow, removed 43 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:22,057 INFO L242 Difference]: Finished difference. Result has 716 places, 626 transitions, 8368 flow [2022-07-13 22:05:22,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=7409, PETRI_DIFFERENCE_MINUEND_PLACES=682, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8368, PETRI_PLACES=716, PETRI_TRANSITIONS=626} [2022-07-13 22:05:22,058 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 460 predicate places. [2022-07-13 22:05:22,058 INFO L495 AbstractCegarLoop]: Abstraction has has 716 places, 626 transitions, 8368 flow [2022-07-13 22:05:22,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:22,058 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:22,059 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:22,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-13 22:05:22,059 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:22,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:22,059 INFO L85 PathProgramCache]: Analyzing trace with hash 947275922, now seen corresponding path program 16 times [2022-07-13 22:05:22,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:22,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073351024] [2022-07-13 22:05:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:22,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:22,119 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 22:05:22,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:22,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073351024] [2022-07-13 22:05:22,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073351024] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:22,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:22,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:22,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645336019] [2022-07-13 22:05:22,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:22,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:22,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:22,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:22,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:22,122 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:05:22,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 716 places, 626 transitions, 8368 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:22,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:22,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:05:22,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:23,961 INFO L129 PetriNetUnfolder]: 1167/6731 cut-off events. [2022-07-13 22:05:23,962 INFO L130 PetriNetUnfolder]: For 74149/74240 co-relation queries the response was YES. [2022-07-13 22:05:24,128 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28236 conditions, 6731 events. 1167/6731 cut-off events. For 74149/74240 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 85736 event pairs, 350 based on Foata normal form. 5/6608 useless extension candidates. Maximal degree in co-relation 28015. Up to 1282 conditions per place. [2022-07-13 22:05:24,159 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 238 selfloop transitions, 166 changer transitions 23/668 dead transitions. [2022-07-13 22:05:24,159 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 731 places, 668 transitions, 9688 flow [2022-07-13 22:05:24,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:24,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:24,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4508 transitions. [2022-07-13 22:05:24,162 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8756798756798757 [2022-07-13 22:05:24,162 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4508 transitions. [2022-07-13 22:05:24,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4508 transitions. [2022-07-13 22:05:24,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:24,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4508 transitions. [2022-07-13 22:05:24,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.44444444444446) internal successors, (4508), 18 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states 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 22:05:24,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:05:24,169 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:05:24,169 INFO L186 Difference]: Start difference. First operand has 716 places, 626 transitions, 8368 flow. Second operand 18 states and 4508 transitions. [2022-07-13 22:05:24,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 731 places, 668 transitions, 9688 flow [2022-07-13 22:05:24,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 729 places, 668 transitions, 9480 flow, removed 104 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:24,632 INFO L242 Difference]: Finished difference. Result has 736 places, 635 transitions, 8753 flow [2022-07-13 22:05:24,632 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=8162, PETRI_DIFFERENCE_MINUEND_PLACES=712, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8753, PETRI_PLACES=736, PETRI_TRANSITIONS=635} [2022-07-13 22:05:24,632 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 480 predicate places. [2022-07-13 22:05:24,633 INFO L495 AbstractCegarLoop]: Abstraction has has 736 places, 635 transitions, 8753 flow [2022-07-13 22:05:24,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:24,633 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:24,633 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:24,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-13 22:05:24,633 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:24,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:24,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1485427194, now seen corresponding path program 17 times [2022-07-13 22:05:24,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:24,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100196346] [2022-07-13 22:05:24,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:24,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:24,695 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 22:05:24,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:24,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100196346] [2022-07-13 22:05:24,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100196346] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:24,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:24,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:24,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887524437] [2022-07-13 22:05:24,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:24,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:24,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:24,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:24,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:24,698 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:05:24,699 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 736 places, 635 transitions, 8753 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:24,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:24,699 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:05:24,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:26,681 INFO L129 PetriNetUnfolder]: 1222/6955 cut-off events. [2022-07-13 22:05:26,682 INFO L130 PetriNetUnfolder]: For 80222/80313 co-relation queries the response was YES. [2022-07-13 22:05:26,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30281 conditions, 6955 events. 1222/6955 cut-off events. For 80222/80313 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 90069 event pairs, 337 based on Foata normal form. 5/6825 useless extension candidates. Maximal degree in co-relation 30054. Up to 1325 conditions per place. [2022-07-13 22:05:26,812 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 296 selfloop transitions, 135 changer transitions 16/688 dead transitions. [2022-07-13 22:05:26,812 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 750 places, 688 transitions, 10434 flow [2022-07-13 22:05:26,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:26,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:26,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4262 transitions. [2022-07-13 22:05:26,814 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8765939942410531 [2022-07-13 22:05:26,814 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4262 transitions. [2022-07-13 22:05:26,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4262 transitions. [2022-07-13 22:05:26,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:26,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4262 transitions. [2022-07-13 22:05:26,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.7058823529412) internal successors, (4262), 17 states have internal predecessors, (4262), 0 states have call successors, (0), 0 states 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 22:05:26,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states 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 22:05:26,819 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states 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 22:05:26,819 INFO L186 Difference]: Start difference. First operand has 736 places, 635 transitions, 8753 flow. Second operand 17 states and 4262 transitions. [2022-07-13 22:05:26,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 750 places, 688 transitions, 10434 flow [2022-07-13 22:05:27,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 744 places, 688 transitions, 10178 flow, removed 50 selfloop flow, removed 6 redundant places. [2022-07-13 22:05:27,264 INFO L242 Difference]: Finished difference. Result has 752 places, 657 transitions, 9400 flow [2022-07-13 22:05:27,265 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=8511, PETRI_DIFFERENCE_MINUEND_PLACES=728, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9400, PETRI_PLACES=752, PETRI_TRANSITIONS=657} [2022-07-13 22:05:27,265 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 496 predicate places. [2022-07-13 22:05:27,265 INFO L495 AbstractCegarLoop]: Abstraction has has 752 places, 657 transitions, 9400 flow [2022-07-13 22:05:27,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:27,265 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:27,266 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:27,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-13 22:05:27,266 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:27,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:27,266 INFO L85 PathProgramCache]: Analyzing trace with hash 548403342, now seen corresponding path program 18 times [2022-07-13 22:05:27,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:27,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390083105] [2022-07-13 22:05:27,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:27,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:27,328 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 22:05:27,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:27,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390083105] [2022-07-13 22:05:27,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390083105] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:27,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:27,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:27,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057961467] [2022-07-13 22:05:27,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:27,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:27,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:27,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:27,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:27,331 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:05:27,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 752 places, 657 transitions, 9400 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:27,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:27,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:05:27,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:29,380 INFO L129 PetriNetUnfolder]: 1259/7271 cut-off events. [2022-07-13 22:05:29,380 INFO L130 PetriNetUnfolder]: For 87211/87302 co-relation queries the response was YES. [2022-07-13 22:05:29,541 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32231 conditions, 7271 events. 1259/7271 cut-off events. For 87211/87302 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 95487 event pairs, 344 based on Foata normal form. 5/7140 useless extension candidates. Maximal degree in co-relation 31999. Up to 1374 conditions per place. [2022-07-13 22:05:29,572 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 322 selfloop transitions, 130 changer transitions 17/710 dead transitions. [2022-07-13 22:05:29,572 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 766 places, 710 transitions, 11137 flow [2022-07-13 22:05:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:29,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:29,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4266 transitions. [2022-07-13 22:05:29,574 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8774167009461127 [2022-07-13 22:05:29,574 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4266 transitions. [2022-07-13 22:05:29,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4266 transitions. [2022-07-13 22:05:29,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:29,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4266 transitions. [2022-07-13 22:05:29,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.94117647058823) internal successors, (4266), 17 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states 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 22:05:29,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states 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 22:05:29,579 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states 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 22:05:29,579 INFO L186 Difference]: Start difference. First operand has 752 places, 657 transitions, 9400 flow. Second operand 17 states and 4266 transitions. [2022-07-13 22:05:29,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 766 places, 710 transitions, 11137 flow [2022-07-13 22:05:30,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 764 places, 710 transitions, 10951 flow, removed 93 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:30,146 INFO L242 Difference]: Finished difference. Result has 772 places, 679 transitions, 10108 flow [2022-07-13 22:05:30,147 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=9220, PETRI_DIFFERENCE_MINUEND_PLACES=748, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10108, PETRI_PLACES=772, PETRI_TRANSITIONS=679} [2022-07-13 22:05:30,148 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 516 predicate places. [2022-07-13 22:05:30,148 INFO L495 AbstractCegarLoop]: Abstraction has has 772 places, 679 transitions, 10108 flow [2022-07-13 22:05:30,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:30,148 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:30,148 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:30,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-13 22:05:30,149 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:30,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:30,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1781075470, now seen corresponding path program 19 times [2022-07-13 22:05:30,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:30,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175638648] [2022-07-13 22:05:30,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:30,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:30,215 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 22:05:30,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:30,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175638648] [2022-07-13 22:05:30,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175638648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:30,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:30,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:30,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932017363] [2022-07-13 22:05:30,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:30,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:30,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:30,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:30,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:30,218 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:05:30,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 772 places, 679 transitions, 10108 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:30,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:30,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:05:30,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:32,588 INFO L129 PetriNetUnfolder]: 1264/7408 cut-off events. [2022-07-13 22:05:32,588 INFO L130 PetriNetUnfolder]: For 92514/92605 co-relation queries the response was YES. [2022-07-13 22:05:32,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33050 conditions, 7408 events. 1264/7408 cut-off events. For 92514/92605 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 97950 event pairs, 343 based on Foata normal form. 5/7278 useless extension candidates. Maximal degree in co-relation 32811. Up to 1381 conditions per place. [2022-07-13 22:05:32,744 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 319 selfloop transitions, 135 changer transitions 21/716 dead transitions. [2022-07-13 22:05:32,744 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 787 places, 716 transitions, 11512 flow [2022-07-13 22:05:32,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:32,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:32,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4512 transitions. [2022-07-13 22:05:32,747 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8764568764568764 [2022-07-13 22:05:32,747 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4512 transitions. [2022-07-13 22:05:32,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4512 transitions. [2022-07-13 22:05:32,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:32,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4512 transitions. [2022-07-13 22:05:32,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.66666666666666) internal successors, (4512), 18 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states 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 22:05:32,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:05:32,753 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:05:32,753 INFO L186 Difference]: Start difference. First operand has 772 places, 679 transitions, 10108 flow. Second operand 18 states and 4512 transitions. [2022-07-13 22:05:32,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 787 places, 716 transitions, 11512 flow [2022-07-13 22:05:33,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 784 places, 716 transitions, 11238 flow, removed 101 selfloop flow, removed 3 redundant places. [2022-07-13 22:05:33,305 INFO L242 Difference]: Finished difference. Result has 788 places, 688 transitions, 10418 flow [2022-07-13 22:05:33,305 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=9868, PETRI_DIFFERENCE_MINUEND_PLACES=767, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10418, PETRI_PLACES=788, PETRI_TRANSITIONS=688} [2022-07-13 22:05:33,305 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 532 predicate places. [2022-07-13 22:05:33,305 INFO L495 AbstractCegarLoop]: Abstraction has has 788 places, 688 transitions, 10418 flow [2022-07-13 22:05:33,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:33,306 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:33,306 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:33,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-13 22:05:33,306 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:33,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:33,307 INFO L85 PathProgramCache]: Analyzing trace with hash -2106076186, now seen corresponding path program 20 times [2022-07-13 22:05:33,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:33,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095643006] [2022-07-13 22:05:33,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:33,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:33,398 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 22:05:33,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:33,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095643006] [2022-07-13 22:05:33,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095643006] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:33,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:33,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:33,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017462501] [2022-07-13 22:05:33,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:33,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:33,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:33,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:33,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:33,401 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-13 22:05:33,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 788 places, 688 transitions, 10418 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:33,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:33,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-13 22:05:33,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:35,634 INFO L129 PetriNetUnfolder]: 1264/7419 cut-off events. [2022-07-13 22:05:35,634 INFO L130 PetriNetUnfolder]: For 95372/95463 co-relation queries the response was YES. [2022-07-13 22:05:35,801 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32932 conditions, 7419 events. 1264/7419 cut-off events. For 95372/95463 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 97985 event pairs, 344 based on Foata normal form. 5/7290 useless extension candidates. Maximal degree in co-relation 32691. Up to 1391 conditions per place. [2022-07-13 22:05:35,827 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 303 selfloop transitions, 152 changer transitions 26/722 dead transitions. [2022-07-13 22:05:35,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 803 places, 722 transitions, 11678 flow [2022-07-13 22:05:35,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:35,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:35,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4512 transitions. [2022-07-13 22:05:35,829 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8764568764568764 [2022-07-13 22:05:35,829 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4512 transitions. [2022-07-13 22:05:35,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4512 transitions. [2022-07-13 22:05:35,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:35,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4512 transitions. [2022-07-13 22:05:35,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.66666666666666) internal successors, (4512), 18 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states 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 22:05:35,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:05:35,835 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states 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 22:05:35,835 INFO L186 Difference]: Start difference. First operand has 788 places, 688 transitions, 10418 flow. Second operand 18 states and 4512 transitions. [2022-07-13 22:05:35,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 803 places, 722 transitions, 11678 flow [2022-07-13 22:05:36,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 787 places, 722 transitions, 11483 flow, removed 68 selfloop flow, removed 16 redundant places. [2022-07-13 22:05:36,450 INFO L242 Difference]: Finished difference. Result has 791 places, 694 transitions, 10709 flow [2022-07-13 22:05:36,450 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=10225, PETRI_DIFFERENCE_MINUEND_PLACES=770, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10709, PETRI_PLACES=791, PETRI_TRANSITIONS=694} [2022-07-13 22:05:36,450 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 535 predicate places. [2022-07-13 22:05:36,450 INFO L495 AbstractCegarLoop]: Abstraction has has 791 places, 694 transitions, 10709 flow [2022-07-13 22:05:36,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 22:05:36,451 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:36,451 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:36,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-13 22:05:36,451 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:36,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:36,451 INFO L85 PathProgramCache]: Analyzing trace with hash 856476254, now seen corresponding path program 1 times [2022-07-13 22:05:36,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:36,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249532794] [2022-07-13 22:05:36,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:36,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:36,469 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 22:05:36,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:36,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249532794] [2022-07-13 22:05:36,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249532794] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:36,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:36,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:36,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602820679] [2022-07-13 22:05:36,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:36,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:36,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:36,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:36,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:36,471 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 286 [2022-07-13 22:05:36,472 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 791 places, 694 transitions, 10709 flow. Second operand has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states 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 22:05:36,472 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:36,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 286 [2022-07-13 22:05:36,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:38,228 INFO L129 PetriNetUnfolder]: 689/7190 cut-off events. [2022-07-13 22:05:38,228 INFO L130 PetriNetUnfolder]: For 87596/88021 co-relation queries the response was YES. [2022-07-13 22:05:38,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28659 conditions, 7190 events. 689/7190 cut-off events. For 87596/88021 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 97574 event pairs, 15 based on Foata normal form. 6/6959 useless extension candidates. Maximal degree in co-relation 28429. Up to 437 conditions per place. [2022-07-13 22:05:38,444 INFO L132 encePairwiseOnDemand]: 280/286 looper letters, 15 selfloop transitions, 4 changer transitions 0/701 dead transitions. [2022-07-13 22:05:38,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 791 places, 701 transitions, 10766 flow [2022-07-13 22:05:38,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:38,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:38,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 816 transitions. [2022-07-13 22:05:38,445 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.951048951048951 [2022-07-13 22:05:38,446 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 816 transitions. [2022-07-13 22:05:38,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 816 transitions. [2022-07-13 22:05:38,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:38,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 816 transitions. [2022-07-13 22:05:38,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states 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 22:05:38,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:05:38,447 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:05:38,447 INFO L186 Difference]: Start difference. First operand has 791 places, 694 transitions, 10709 flow. Second operand 3 states and 816 transitions. [2022-07-13 22:05:38,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 791 places, 701 transitions, 10766 flow [2022-07-13 22:05:39,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 776 places, 701 transitions, 10546 flow, removed 49 selfloop flow, removed 15 redundant places. [2022-07-13 22:05:39,013 INFO L242 Difference]: Finished difference. Result has 778 places, 696 transitions, 10517 flow [2022-07-13 22:05:39,014 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=10489, PETRI_DIFFERENCE_MINUEND_PLACES=774, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=690, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=10517, PETRI_PLACES=778, PETRI_TRANSITIONS=696} [2022-07-13 22:05:39,014 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 522 predicate places. [2022-07-13 22:05:39,014 INFO L495 AbstractCegarLoop]: Abstraction has has 778 places, 696 transitions, 10517 flow [2022-07-13 22:05:39,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states 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 22:05:39,014 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:39,014 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:39,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-13 22:05:39,014 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:39,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:39,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1341874374, now seen corresponding path program 2 times [2022-07-13 22:05:39,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:39,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889100759] [2022-07-13 22:05:39,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:39,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:39,032 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 22:05:39,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:39,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889100759] [2022-07-13 22:05:39,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889100759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:39,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:39,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:39,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588746483] [2022-07-13 22:05:39,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:39,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:39,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:39,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:39,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:39,034 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 286 [2022-07-13 22:05:39,035 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 778 places, 696 transitions, 10517 flow. Second operand has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states 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 22:05:39,035 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:39,035 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 286 [2022-07-13 22:05:39,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:40,413 INFO L129 PetriNetUnfolder]: 520/5636 cut-off events. [2022-07-13 22:05:40,413 INFO L130 PetriNetUnfolder]: For 64105/64507 co-relation queries the response was YES. [2022-07-13 22:05:40,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21510 conditions, 5636 events. 520/5636 cut-off events. For 64105/64507 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 72547 event pairs, 13 based on Foata normal form. 13/5450 useless extension candidates. Maximal degree in co-relation 21293. Up to 344 conditions per place. [2022-07-13 22:05:40,568 INFO L132 encePairwiseOnDemand]: 282/286 looper letters, 19 selfloop transitions, 2 changer transitions 0/703 dead transitions. [2022-07-13 22:05:40,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 780 places, 703 transitions, 10582 flow [2022-07-13 22:05:40,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:40,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:40,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 816 transitions. [2022-07-13 22:05:40,569 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.951048951048951 [2022-07-13 22:05:40,569 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 816 transitions. [2022-07-13 22:05:40,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 816 transitions. [2022-07-13 22:05:40,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:40,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 816 transitions. [2022-07-13 22:05:40,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states 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 22:05:40,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:05:40,570 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:05:40,571 INFO L186 Difference]: Start difference. First operand has 778 places, 696 transitions, 10517 flow. Second operand 3 states and 816 transitions. [2022-07-13 22:05:40,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 780 places, 703 transitions, 10582 flow [2022-07-13 22:05:40,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 778 places, 703 transitions, 10574 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:40,983 INFO L242 Difference]: Finished difference. Result has 780 places, 698 transitions, 10533 flow [2022-07-13 22:05:40,984 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=10509, PETRI_DIFFERENCE_MINUEND_PLACES=776, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=694, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=10533, PETRI_PLACES=780, PETRI_TRANSITIONS=698} [2022-07-13 22:05:40,984 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 524 predicate places. [2022-07-13 22:05:40,984 INFO L495 AbstractCegarLoop]: Abstraction has has 780 places, 698 transitions, 10533 flow [2022-07-13 22:05:40,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states 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 22:05:40,985 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:40,989 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:40,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-13 22:05:40,989 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:40,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:40,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1481413226, now seen corresponding path program 1 times [2022-07-13 22:05:40,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:40,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530640892] [2022-07-13 22:05:40,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:40,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:41,016 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 22:05:41,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:41,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530640892] [2022-07-13 22:05:41,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530640892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:41,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:41,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:41,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670184896] [2022-07-13 22:05:41,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:41,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:41,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:41,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:41,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:41,019 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 286 [2022-07-13 22:05:41,020 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 780 places, 698 transitions, 10533 flow. Second operand has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states 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 22:05:41,020 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:41,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 286 [2022-07-13 22:05:41,020 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:43,434 INFO L129 PetriNetUnfolder]: 839/9294 cut-off events. [2022-07-13 22:05:43,434 INFO L130 PetriNetUnfolder]: For 106607/107171 co-relation queries the response was YES. [2022-07-13 22:05:43,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35525 conditions, 9294 events. 839/9294 cut-off events. For 106607/107171 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 130590 event pairs, 26 based on Foata normal form. 3/8984 useless extension candidates. Maximal degree in co-relation 35307. Up to 508 conditions per place. [2022-07-13 22:05:43,697 INFO L132 encePairwiseOnDemand]: 280/286 looper letters, 19 selfloop transitions, 3 changer transitions 0/706 dead transitions. [2022-07-13 22:05:43,697 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 782 places, 706 transitions, 10598 flow [2022-07-13 22:05:43,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:43,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:43,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 814 transitions. [2022-07-13 22:05:43,698 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2022-07-13 22:05:43,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 814 transitions. [2022-07-13 22:05:43,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 814 transitions. [2022-07-13 22:05:43,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:43,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 814 transitions. [2022-07-13 22:05:43,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 0 states have call successors, (0), 0 states 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 22:05:43,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:05:43,700 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:05:43,700 INFO L186 Difference]: Start difference. First operand has 780 places, 698 transitions, 10533 flow. Second operand 3 states and 814 transitions. [2022-07-13 22:05:43,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 782 places, 706 transitions, 10598 flow [2022-07-13 22:05:44,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 781 places, 706 transitions, 10592 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-13 22:05:44,377 INFO L242 Difference]: Finished difference. Result has 783 places, 701 transitions, 10557 flow [2022-07-13 22:05:44,378 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=10527, PETRI_DIFFERENCE_MINUEND_PLACES=779, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=695, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=10557, PETRI_PLACES=783, PETRI_TRANSITIONS=701} [2022-07-13 22:05:44,378 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 527 predicate places. [2022-07-13 22:05:44,378 INFO L495 AbstractCegarLoop]: Abstraction has has 783 places, 701 transitions, 10557 flow [2022-07-13 22:05:44,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states 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 22:05:44,379 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:44,379 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:44,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-13 22:05:44,379 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:44,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:44,380 INFO L85 PathProgramCache]: Analyzing trace with hash -131414502, now seen corresponding path program 1 times [2022-07-13 22:05:44,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:44,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402408391] [2022-07-13 22:05:44,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:44,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:44,399 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 22:05:44,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:44,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402408391] [2022-07-13 22:05:44,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402408391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:44,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:44,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:44,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127971683] [2022-07-13 22:05:44,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:44,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:44,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:44,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:44,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:44,402 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 286 [2022-07-13 22:05:44,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 783 places, 701 transitions, 10557 flow. Second operand has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states 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 22:05:44,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:44,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 286 [2022-07-13 22:05:44,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:47,006 INFO L129 PetriNetUnfolder]: 833/10764 cut-off events. [2022-07-13 22:05:47,006 INFO L130 PetriNetUnfolder]: For 66546/66997 co-relation queries the response was YES. [2022-07-13 22:05:47,208 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29882 conditions, 10764 events. 833/10764 cut-off events. For 66546/66997 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 148831 event pairs, 88 based on Foata normal form. 8/10186 useless extension candidates. Maximal degree in co-relation 29663. Up to 682 conditions per place. [2022-07-13 22:05:47,228 INFO L132 encePairwiseOnDemand]: 278/286 looper letters, 20 selfloop transitions, 4 changer transitions 4/709 dead transitions. [2022-07-13 22:05:47,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 785 places, 709 transitions, 10625 flow [2022-07-13 22:05:47,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:47,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 811 transitions. [2022-07-13 22:05:47,229 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9452214452214452 [2022-07-13 22:05:47,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 811 transitions. [2022-07-13 22:05:47,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 811 transitions. [2022-07-13 22:05:47,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:47,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 811 transitions. [2022-07-13 22:05:47,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states 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 22:05:47,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:05:47,231 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:05:47,231 INFO L186 Difference]: Start difference. First operand has 783 places, 701 transitions, 10557 flow. Second operand 3 states and 811 transitions. [2022-07-13 22:05:47,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 785 places, 709 transitions, 10625 flow [2022-07-13 22:05:47,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 784 places, 709 transitions, 10622 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:05:47,680 INFO L242 Difference]: Finished difference. Result has 786 places, 701 transitions, 10574 flow [2022-07-13 22:05:47,680 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=10554, PETRI_DIFFERENCE_MINUEND_PLACES=782, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=697, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=10574, PETRI_PLACES=786, PETRI_TRANSITIONS=701} [2022-07-13 22:05:47,680 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 530 predicate places. [2022-07-13 22:05:47,680 INFO L495 AbstractCegarLoop]: Abstraction has has 786 places, 701 transitions, 10574 flow [2022-07-13 22:05:47,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states 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 22:05:47,681 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:47,681 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:47,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-13 22:05:47,681 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:47,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:47,681 INFO L85 PathProgramCache]: Analyzing trace with hash -545343484, now seen corresponding path program 1 times [2022-07-13 22:05:47,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:47,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171725218] [2022-07-13 22:05:47,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:47,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:47,697 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 22:05:47,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:47,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171725218] [2022-07-13 22:05:47,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171725218] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:47,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:47,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:47,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655389210] [2022-07-13 22:05:47,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:47,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:47,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:47,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:47,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:47,699 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 286 [2022-07-13 22:05:47,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 786 places, 701 transitions, 10574 flow. Second operand has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states 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 22:05:47,700 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:47,700 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 286 [2022-07-13 22:05:47,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:50,071 INFO L129 PetriNetUnfolder]: 700/9700 cut-off events. [2022-07-13 22:05:50,071 INFO L130 PetriNetUnfolder]: For 66479/67073 co-relation queries the response was YES. [2022-07-13 22:05:50,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28441 conditions, 9700 events. 700/9700 cut-off events. For 66479/67073 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 132894 event pairs, 54 based on Foata normal form. 6/9259 useless extension candidates. Maximal degree in co-relation 28221. Up to 656 conditions per place. [2022-07-13 22:05:50,250 INFO L132 encePairwiseOnDemand]: 278/286 looper letters, 20 selfloop transitions, 5 changer transitions 5/709 dead transitions. [2022-07-13 22:05:50,251 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 783 places, 709 transitions, 10651 flow [2022-07-13 22:05:50,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:50,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:50,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 814 transitions. [2022-07-13 22:05:50,252 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2022-07-13 22:05:50,252 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 814 transitions. [2022-07-13 22:05:50,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 814 transitions. [2022-07-13 22:05:50,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:50,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 814 transitions. [2022-07-13 22:05:50,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 0 states have call successors, (0), 0 states 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 22:05:50,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:05:50,253 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:05:50,253 INFO L186 Difference]: Start difference. First operand has 786 places, 701 transitions, 10574 flow. Second operand 3 states and 814 transitions. [2022-07-13 22:05:50,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 783 places, 709 transitions, 10651 flow [2022-07-13 22:05:50,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 781 places, 709 transitions, 10643 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:50,736 INFO L242 Difference]: Finished difference. Result has 783 places, 699 transitions, 10585 flow [2022-07-13 22:05:50,737 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=10566, PETRI_DIFFERENCE_MINUEND_PLACES=779, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=696, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=10585, PETRI_PLACES=783, PETRI_TRANSITIONS=699} [2022-07-13 22:05:50,737 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 527 predicate places. [2022-07-13 22:05:50,737 INFO L495 AbstractCegarLoop]: Abstraction has has 783 places, 699 transitions, 10585 flow [2022-07-13 22:05:50,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states 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 22:05:50,737 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:50,738 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:50,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-13 22:05:50,738 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:50,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:50,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1258079108, now seen corresponding path program 2 times [2022-07-13 22:05:50,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:50,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041568770] [2022-07-13 22:05:50,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:50,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:50,758 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 22:05:50,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:50,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041568770] [2022-07-13 22:05:50,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041568770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:50,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:50,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:50,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449253900] [2022-07-13 22:05:50,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:50,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:50,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:50,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:50,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:50,761 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 286 [2022-07-13 22:05:50,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 783 places, 699 transitions, 10585 flow. Second operand has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states 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 22:05:50,761 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:50,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 286 [2022-07-13 22:05:50,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:52,922 INFO L129 PetriNetUnfolder]: 616/8955 cut-off events. [2022-07-13 22:05:52,922 INFO L130 PetriNetUnfolder]: For 65899/66456 co-relation queries the response was YES. [2022-07-13 22:05:53,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27207 conditions, 8955 events. 616/8955 cut-off events. For 65899/66456 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 120744 event pairs, 38 based on Foata normal form. 9/8573 useless extension candidates. Maximal degree in co-relation 26987. Up to 612 conditions per place. [2022-07-13 22:05:53,075 INFO L132 encePairwiseOnDemand]: 276/286 looper letters, 22 selfloop transitions, 6 changer transitions 0/707 dead transitions. [2022-07-13 22:05:53,075 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 782 places, 707 transitions, 10669 flow [2022-07-13 22:05:53,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:53,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:53,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 811 transitions. [2022-07-13 22:05:53,076 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9452214452214452 [2022-07-13 22:05:53,076 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 811 transitions. [2022-07-13 22:05:53,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 811 transitions. [2022-07-13 22:05:53,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:53,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 811 transitions. [2022-07-13 22:05:53,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states 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 22:05:53,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:05:53,077 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 22:05:53,077 INFO L186 Difference]: Start difference. First operand has 783 places, 699 transitions, 10585 flow. Second operand 3 states and 811 transitions. [2022-07-13 22:05:53,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 782 places, 707 transitions, 10669 flow [2022-07-13 22:05:53,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 778 places, 707 transitions, 10649 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-07-13 22:05:53,544 INFO L242 Difference]: Finished difference. Result has 780 places, 703 transitions, 10621 flow [2022-07-13 22:05:53,544 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=10565, PETRI_DIFFERENCE_MINUEND_PLACES=776, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=10621, PETRI_PLACES=780, PETRI_TRANSITIONS=703} [2022-07-13 22:05:53,545 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 524 predicate places. [2022-07-13 22:05:53,545 INFO L495 AbstractCegarLoop]: Abstraction has has 780 places, 703 transitions, 10621 flow [2022-07-13 22:05:53,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states 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 22:05:53,545 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:53,545 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:53,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-13 22:05:53,545 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:53,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:53,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1051323538, now seen corresponding path program 1 times [2022-07-13 22:05:53,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:53,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298602044] [2022-07-13 22:05:53,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:53,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:53,615 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 22:05:53,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:53,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298602044] [2022-07-13 22:05:53,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298602044] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:53,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:53,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:05:53,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125546551] [2022-07-13 22:05:53,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:53,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:05:53,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:53,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:05:53,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:05:53,618 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 286 [2022-07-13 22:05:53,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 780 places, 703 transitions, 10621 flow. Second operand has 9 states, 9 states have (on average 249.66666666666666) internal successors, (2247), 9 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states 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 22:05:53,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:53,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 286 [2022-07-13 22:05:53,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:56,516 INFO L129 PetriNetUnfolder]: 1048/12179 cut-off events. [2022-07-13 22:05:56,516 INFO L130 PetriNetUnfolder]: For 128264/130404 co-relation queries the response was YES. [2022-07-13 22:05:56,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45177 conditions, 12179 events. 1048/12179 cut-off events. For 128264/130404 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 175132 event pairs, 54 based on Foata normal form. 132/12087 useless extension candidates. Maximal degree in co-relation 44958. Up to 785 conditions per place. [2022-07-13 22:05:56,833 INFO L132 encePairwiseOnDemand]: 274/286 looper letters, 45 selfloop transitions, 9 changer transitions 4/735 dead transitions. [2022-07-13 22:05:56,833 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 792 places, 735 transitions, 10822 flow [2022-07-13 22:05:56,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 22:05:56,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 22:05:56,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3270 transitions. [2022-07-13 22:05:56,835 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8795051102743411 [2022-07-13 22:05:56,835 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3270 transitions. [2022-07-13 22:05:56,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3270 transitions. [2022-07-13 22:05:56,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:56,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3270 transitions. [2022-07-13 22:05:56,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 251.53846153846155) internal successors, (3270), 13 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states 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 22:05:56,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 286.0) internal successors, (4004), 14 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states 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 22:05:56,839 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 286.0) internal successors, (4004), 14 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states 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 22:05:56,839 INFO L186 Difference]: Start difference. First operand has 780 places, 703 transitions, 10621 flow. Second operand 13 states and 3270 transitions. [2022-07-13 22:05:56,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 792 places, 735 transitions, 10822 flow [2022-07-13 22:05:57,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 790 places, 735 transitions, 10802 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:57,602 INFO L242 Difference]: Finished difference. Result has 801 places, 711 transitions, 10674 flow [2022-07-13 22:05:57,602 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=10601, PETRI_DIFFERENCE_MINUEND_PLACES=778, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=694, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10674, PETRI_PLACES=801, PETRI_TRANSITIONS=711} [2022-07-13 22:05:57,602 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 545 predicate places. [2022-07-13 22:05:57,602 INFO L495 AbstractCegarLoop]: Abstraction has has 801 places, 711 transitions, 10674 flow [2022-07-13 22:05:57,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 249.66666666666666) internal successors, (2247), 9 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states 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 22:05:57,603 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:57,603 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:57,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-13 22:05:57,603 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:57,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:57,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1506223976, now seen corresponding path program 1 times [2022-07-13 22:05:57,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:57,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811371842] [2022-07-13 22:05:57,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:57,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:57,707 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 22:05:57,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:57,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811371842] [2022-07-13 22:05:57,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811371842] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:57,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:57,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:57,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233221038] [2022-07-13 22:05:57,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:57,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:57,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:57,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:57,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:57,709 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 286 [2022-07-13 22:05:57,711 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 801 places, 711 transitions, 10674 flow. Second operand has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states 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 22:05:57,711 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:57,711 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 286 [2022-07-13 22:05:57,711 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:08,921 INFO L129 PetriNetUnfolder]: 11476/33287 cut-off events. [2022-07-13 22:06:08,921 INFO L130 PetriNetUnfolder]: For 239279/239584 co-relation queries the response was YES. [2022-07-13 22:06:09,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115932 conditions, 33287 events. 11476/33287 cut-off events. For 239279/239584 co-relation queries the response was YES. Maximal size of possible extension queue 3492. Compared 464842 event pairs, 7573 based on Foata normal form. 69/30686 useless extension candidates. Maximal degree in co-relation 115702. Up to 19563 conditions per place. [2022-07-13 22:06:09,940 INFO L132 encePairwiseOnDemand]: 265/286 looper letters, 604 selfloop transitions, 91 changer transitions 62/1003 dead transitions. [2022-07-13 22:06:09,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 856 places, 1003 transitions, 13350 flow [2022-07-13 22:06:09,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-13 22:06:09,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-07-13 22:06:09,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 13829 transitions. [2022-07-13 22:06:09,945 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8336749457439112 [2022-07-13 22:06:09,946 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 13829 transitions. [2022-07-13 22:06:09,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 13829 transitions. [2022-07-13 22:06:09,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:09,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 13829 transitions. [2022-07-13 22:06:09,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 238.43103448275863) internal successors, (13829), 58 states have internal predecessors, (13829), 0 states have call successors, (0), 0 states 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 22:06:09,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 286.0) internal successors, (16874), 59 states have internal predecessors, (16874), 0 states have call successors, (0), 0 states 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 22:06:09,961 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 286.0) internal successors, (16874), 59 states have internal predecessors, (16874), 0 states have call successors, (0), 0 states 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 22:06:09,962 INFO L186 Difference]: Start difference. First operand has 801 places, 711 transitions, 10674 flow. Second operand 58 states and 13829 transitions. [2022-07-13 22:06:09,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 856 places, 1003 transitions, 13350 flow [2022-07-13 22:06:11,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 853 places, 1003 transitions, 13337 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-07-13 22:06:11,681 INFO L242 Difference]: Finished difference. Result has 905 places, 801 transitions, 11466 flow [2022-07-13 22:06:11,682 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=10669, PETRI_DIFFERENCE_MINUEND_PLACES=796, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=711, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=692, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=11466, PETRI_PLACES=905, PETRI_TRANSITIONS=801} [2022-07-13 22:06:11,682 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 649 predicate places. [2022-07-13 22:06:11,682 INFO L495 AbstractCegarLoop]: Abstraction has has 905 places, 801 transitions, 11466 flow [2022-07-13 22:06:11,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states 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 22:06:11,682 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:11,683 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:11,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-13 22:06:11,683 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:11,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:11,683 INFO L85 PathProgramCache]: Analyzing trace with hash -2032426182, now seen corresponding path program 1 times [2022-07-13 22:06:11,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:11,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903680556] [2022-07-13 22:06:11,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:11,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:11,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:11,783 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 22:06:11,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:11,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903680556] [2022-07-13 22:06:11,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903680556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:11,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:11,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:11,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335756177] [2022-07-13 22:06:11,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:11,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:11,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:11,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:11,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:11,786 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 286 [2022-07-13 22:06:11,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 905 places, 801 transitions, 11466 flow. Second operand has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states 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 22:06:11,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:11,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 286 [2022-07-13 22:06:11,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand