./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cfa53b3a6eade068c4346d28766037c8d26fae61c62dd4c8f6fc2f9d68567d2c --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:27:07,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:27:07,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:27:07,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:27:07,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:27:07,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:27:07,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:27:07,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:27:07,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:27:07,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:27:07,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:27:07,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:27:07,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:27:07,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:27:07,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:27:07,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:27:07,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:27:07,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:27:07,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:27:07,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:27:07,340 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:27:07,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:27:07,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:27:07,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:27:07,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:27:07,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:27:07,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:27:07,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:27:07,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:27:07,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:27:07,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:27:07,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:27:07,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:27:07,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:27:07,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:27:07,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:27:07,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:27:07,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:27:07,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:27:07,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:27:07,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:27:07,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:27:07,356 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:27:07,383 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:27:07,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:27:07,383 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:27:07,384 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:27:07,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:27:07,385 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:27:07,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:27:07,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:27:07,385 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:27:07,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:27:07,386 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:27:07,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:27:07,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:27:07,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:27:07,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:27:07,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:27:07,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:27:07,388 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:27:07,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:27:07,388 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:27:07,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:27:07,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:27:07,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:27:07,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:27:07,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:27:07,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:27:07,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:27:07,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:27:07,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:27:07,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:27:07,391 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:27:07,392 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:27:07,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:27:07,392 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfa53b3a6eade068c4346d28766037c8d26fae61c62dd4c8f6fc2f9d68567d2c [2022-07-19 21:27:07,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:27:07,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:27:07,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:27:07,631 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:27:07,632 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:27:07,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2022-07-19 21:27:07,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27fa453e3/2e5f5f841ad84866bab627b5bc8a711d/FLAG52acab47f [2022-07-19 21:27:08,129 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:27:08,130 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2022-07-19 21:27:08,137 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27fa453e3/2e5f5f841ad84866bab627b5bc8a711d/FLAG52acab47f [2022-07-19 21:27:08,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27fa453e3/2e5f5f841ad84866bab627b5bc8a711d [2022-07-19 21:27:08,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:27:08,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:27:08,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:27:08,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:27:08,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:27:08,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:27:08" (1/1) ... [2022-07-19 21:27:08,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ca6f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08, skipping insertion in model container [2022-07-19 21:27:08,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:27:08" (1/1) ... [2022-07-19 21:27:08,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:27:08,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:27:08,730 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c[2303,2316] [2022-07-19 21:27:08,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:27:08,743 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:27:08,759 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c[2303,2316] [2022-07-19 21:27:08,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:27:08,773 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:27:08,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08 WrapperNode [2022-07-19 21:27:08,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:27:08,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:27:08,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:27:08,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:27:08,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08" (1/1) ... [2022-07-19 21:27:08,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08" (1/1) ... [2022-07-19 21:27:08,808 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 130 [2022-07-19 21:27:08,809 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:27:08,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:27:08,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:27:08,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:27:08,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08" (1/1) ... [2022-07-19 21:27:08,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08" (1/1) ... [2022-07-19 21:27:08,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08" (1/1) ... [2022-07-19 21:27:08,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08" (1/1) ... [2022-07-19 21:27:08,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08" (1/1) ... [2022-07-19 21:27:08,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08" (1/1) ... [2022-07-19 21:27:08,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08" (1/1) ... [2022-07-19 21:27:08,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:27:08,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:27:08,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:27:08,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:27:08,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08" (1/1) ... [2022-07-19 21:27:08,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:27:08,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:27:08,870 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) [2022-07-19 21:27:08,872 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 [2022-07-19 21:27:08,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:27:08,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:27:08,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:27:08,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:27:08,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:27:08,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:27:08,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:27:08,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:27:08,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:27:08,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:27:08,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:27:08,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:27:08,904 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:27:08,972 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:27:08,973 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:27:09,271 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:27:09,279 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:27:09,280 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:27:09,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:27:09 BoogieIcfgContainer [2022-07-19 21:27:09,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:27:09,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:27:09,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:27:09,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:27:09,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:27:08" (1/3) ... [2022-07-19 21:27:09,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae89415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:27:09, skipping insertion in model container [2022-07-19 21:27:09,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08" (2/3) ... [2022-07-19 21:27:09,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae89415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:27:09, skipping insertion in model container [2022-07-19 21:27:09,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:27:09" (3/3) ... [2022-07-19 21:27:09,290 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-symm.wvr.c [2022-07-19 21:27:09,295 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:27:09,303 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:27:09,304 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:27:09,304 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:27:09,411 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-19 21:27:09,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 170 places, 176 transitions, 368 flow [2022-07-19 21:27:09,545 INFO L129 PetriNetUnfolder]: 13/174 cut-off events. [2022-07-19 21:27:09,552 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:27:09,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 174 events. 13/174 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 288 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-07-19 21:27:09,558 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 176 transitions, 368 flow [2022-07-19 21:27:09,563 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 165 transitions, 342 flow [2022-07-19 21:27:09,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:27:09,583 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@4d1936da, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4a16b349 [2022-07-19 21:27:09,584 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-19 21:27:09,617 INFO L129 PetriNetUnfolder]: 13/164 cut-off events. [2022-07-19 21:27:09,617 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:27:09,617 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:09,618 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] [2022-07-19 21:27:09,618 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:09,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:09,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1136902299, now seen corresponding path program 1 times [2022-07-19 21:27:09,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:09,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983011085] [2022-07-19 21:27:09,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:09,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:09,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:09,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:09,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983011085] [2022-07-19 21:27:09,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983011085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:09,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:09,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:27:09,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175095609] [2022-07-19 21:27:09,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:09,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:27:09,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:09,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:27:09,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:27:09,962 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-07-19 21:27:09,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 165 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:09,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:09,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-07-19 21:27:09,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:10,136 INFO L129 PetriNetUnfolder]: 27/458 cut-off events. [2022-07-19 21:27:10,136 INFO L130 PetriNetUnfolder]: For 44/45 co-relation queries the response was YES. [2022-07-19 21:27:10,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 458 events. 27/458 cut-off events. For 44/45 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2355 event pairs, 7 based on Foata normal form. 20/433 useless extension candidates. Maximal degree in co-relation 339. Up to 26 conditions per place. [2022-07-19 21:27:10,144 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 15 selfloop transitions, 3 changer transitions 3/164 dead transitions. [2022-07-19 21:27:10,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 164 transitions, 385 flow [2022-07-19 21:27:10,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:27:10,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:27:10,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2022-07-19 21:27:10,163 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9450757575757576 [2022-07-19 21:27:10,164 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2022-07-19 21:27:10,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2022-07-19 21:27:10,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:10,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2022-07-19 21:27:10,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,184 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,186 INFO L186 Difference]: Start difference. First operand has 159 places, 165 transitions, 342 flow. Second operand 3 states and 499 transitions. [2022-07-19 21:27:10,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 164 transitions, 385 flow [2022-07-19 21:27:10,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 164 transitions, 371 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:27:10,198 INFO L242 Difference]: Finished difference. Result has 159 places, 158 transitions, 344 flow [2022-07-19 21:27:10,201 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=159, PETRI_TRANSITIONS=158} [2022-07-19 21:27:10,205 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 0 predicate places. [2022-07-19 21:27:10,205 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 158 transitions, 344 flow [2022-07-19 21:27:10,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,206 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:10,207 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:10,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:27:10,208 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:10,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:10,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1762878269, now seen corresponding path program 1 times [2022-07-19 21:27:10,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:10,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322948039] [2022-07-19 21:27:10,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:10,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:10,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:10,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:10,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322948039] [2022-07-19 21:27:10,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322948039] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:10,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:10,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:10,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386955529] [2022-07-19 21:27:10,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:10,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:10,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:10,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:10,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:10,541 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:10,543 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 158 transitions, 344 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:10,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:10,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:11,018 INFO L129 PetriNetUnfolder]: 187/880 cut-off events. [2022-07-19 21:27:11,018 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-07-19 21:27:11,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 880 events. 187/880 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5666 event pairs, 66 based on Foata normal form. 1/822 useless extension candidates. Maximal degree in co-relation 873. Up to 259 conditions per place. [2022-07-19 21:27:11,025 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 82 selfloop transitions, 5 changer transitions 34/247 dead transitions. [2022-07-19 21:27:11,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 247 transitions, 777 flow [2022-07-19 21:27:11,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:27:11,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:27:11,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3314 transitions. [2022-07-19 21:27:11,033 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7845643939393939 [2022-07-19 21:27:11,033 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3314 transitions. [2022-07-19 21:27:11,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3314 transitions. [2022-07-19 21:27:11,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:11,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3314 transitions. [2022-07-19 21:27:11,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 138.08333333333334) internal successors, (3314), 24 states have internal predecessors, (3314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,053 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,054 INFO L186 Difference]: Start difference. First operand has 159 places, 158 transitions, 344 flow. Second operand 24 states and 3314 transitions. [2022-07-19 21:27:11,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 247 transitions, 777 flow [2022-07-19 21:27:11,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 247 transitions, 774 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:27:11,060 INFO L242 Difference]: Finished difference. Result has 200 places, 162 transitions, 432 flow [2022-07-19 21:27:11,060 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=432, PETRI_PLACES=200, PETRI_TRANSITIONS=162} [2022-07-19 21:27:11,061 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 41 predicate places. [2022-07-19 21:27:11,061 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 162 transitions, 432 flow [2022-07-19 21:27:11,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,062 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:11,062 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] [2022-07-19 21:27:11,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:27:11,063 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:11,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:11,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1405916061, now seen corresponding path program 1 times [2022-07-19 21:27:11,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:11,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020096633] [2022-07-19 21:27:11,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:11,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:11,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:11,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020096633] [2022-07-19 21:27:11,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020096633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:11,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:11,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:27:11,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020770297] [2022-07-19 21:27:11,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:11,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:27:11,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:11,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:27:11,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:27:11,108 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-07-19 21:27:11,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 162 transitions, 432 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:11,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-07-19 21:27:11,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:11,202 INFO L129 PetriNetUnfolder]: 39/488 cut-off events. [2022-07-19 21:27:11,203 INFO L130 PetriNetUnfolder]: For 524/541 co-relation queries the response was YES. [2022-07-19 21:27:11,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 904 conditions, 488 events. 39/488 cut-off events. For 524/541 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2284 event pairs, 26 based on Foata normal form. 1/454 useless extension candidates. Maximal degree in co-relation 830. Up to 27 conditions per place. [2022-07-19 21:27:11,207 INFO L132 encePairwiseOnDemand]: 168/176 looper letters, 16 selfloop transitions, 5 changer transitions 0/168 dead transitions. [2022-07-19 21:27:11,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 168 transitions, 495 flow [2022-07-19 21:27:11,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:27:11,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:27:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2022-07-19 21:27:11,210 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2022-07-19 21:27:11,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2022-07-19 21:27:11,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2022-07-19 21:27:11,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:11,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2022-07-19 21:27:11,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,215 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,216 INFO L186 Difference]: Start difference. First operand has 200 places, 162 transitions, 432 flow. Second operand 3 states and 489 transitions. [2022-07-19 21:27:11,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 168 transitions, 495 flow [2022-07-19 21:27:11,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 168 transitions, 476 flow, removed 9 selfloop flow, removed 10 redundant places. [2022-07-19 21:27:11,228 INFO L242 Difference]: Finished difference. Result has 177 places, 165 transitions, 457 flow [2022-07-19 21:27:11,229 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=457, PETRI_PLACES=177, PETRI_TRANSITIONS=165} [2022-07-19 21:27:11,231 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 18 predicate places. [2022-07-19 21:27:11,231 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 165 transitions, 457 flow [2022-07-19 21:27:11,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,231 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:11,231 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] [2022-07-19 21:27:11,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:27:11,232 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:11,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:11,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1946352631, now seen corresponding path program 1 times [2022-07-19 21:27:11,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:11,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96414013] [2022-07-19 21:27:11,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:11,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:11,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:11,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:11,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96414013] [2022-07-19 21:27:11,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96414013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:11,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:11,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:27:11,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741534241] [2022-07-19 21:27:11,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:11,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:27:11,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:11,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:27:11,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:27:11,291 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-07-19 21:27:11,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 165 transitions, 457 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:11,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-07-19 21:27:11,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:11,396 INFO L129 PetriNetUnfolder]: 63/751 cut-off events. [2022-07-19 21:27:11,396 INFO L130 PetriNetUnfolder]: For 727/768 co-relation queries the response was YES. [2022-07-19 21:27:11,400 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1392 conditions, 751 events. 63/751 cut-off events. For 727/768 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4482 event pairs, 39 based on Foata normal form. 9/723 useless extension candidates. Maximal degree in co-relation 1079. Up to 58 conditions per place. [2022-07-19 21:27:11,402 INFO L132 encePairwiseOnDemand]: 168/176 looper letters, 13 selfloop transitions, 5 changer transitions 0/171 dead transitions. [2022-07-19 21:27:11,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 171 transitions, 508 flow [2022-07-19 21:27:11,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:27:11,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:27:11,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2022-07-19 21:27:11,404 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2022-07-19 21:27:11,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2022-07-19 21:27:11,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2022-07-19 21:27:11,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:11,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2022-07-19 21:27:11,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,407 INFO L186 Difference]: Start difference. First operand has 177 places, 165 transitions, 457 flow. Second operand 3 states and 489 transitions. [2022-07-19 21:27:11,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 171 transitions, 508 flow [2022-07-19 21:27:11,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 171 transitions, 492 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:11,414 INFO L242 Difference]: Finished difference. Result has 179 places, 168 transitions, 479 flow [2022-07-19 21:27:11,415 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=479, PETRI_PLACES=179, PETRI_TRANSITIONS=168} [2022-07-19 21:27:11,415 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 20 predicate places. [2022-07-19 21:27:11,416 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 168 transitions, 479 flow [2022-07-19 21:27:11,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,416 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:11,416 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] [2022-07-19 21:27:11,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:27:11,417 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:11,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:11,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1833288823, now seen corresponding path program 2 times [2022-07-19 21:27:11,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:11,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988435323] [2022-07-19 21:27:11,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:11,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:11,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:11,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:11,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988435323] [2022-07-19 21:27:11,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988435323] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:11,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:11,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:27:11,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72382138] [2022-07-19 21:27:11,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:11,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:27:11,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:11,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:27:11,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:27:11,470 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-07-19 21:27:11,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 168 transitions, 479 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:11,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-07-19 21:27:11,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:11,569 INFO L129 PetriNetUnfolder]: 38/588 cut-off events. [2022-07-19 21:27:11,570 INFO L130 PetriNetUnfolder]: For 432/445 co-relation queries the response was YES. [2022-07-19 21:27:11,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1040 conditions, 588 events. 38/588 cut-off events. For 432/445 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3256 event pairs, 28 based on Foata normal form. 8/572 useless extension candidates. Maximal degree in co-relation 899. Up to 36 conditions per place. [2022-07-19 21:27:11,576 INFO L132 encePairwiseOnDemand]: 170/176 looper letters, 18 selfloop transitions, 3 changer transitions 2/174 dead transitions. [2022-07-19 21:27:11,576 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 174 transitions, 542 flow [2022-07-19 21:27:11,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:27:11,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:27:11,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2022-07-19 21:27:11,578 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2022-07-19 21:27:11,578 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2022-07-19 21:27:11,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2022-07-19 21:27:11,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:11,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2022-07-19 21:27:11,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,581 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,581 INFO L186 Difference]: Start difference. First operand has 179 places, 168 transitions, 479 flow. Second operand 3 states and 489 transitions. [2022-07-19 21:27:11,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 174 transitions, 542 flow [2022-07-19 21:27:11,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 174 transitions, 532 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:11,589 INFO L242 Difference]: Finished difference. Result has 181 places, 169 transitions, 501 flow [2022-07-19 21:27:11,590 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=501, PETRI_PLACES=181, PETRI_TRANSITIONS=169} [2022-07-19 21:27:11,592 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 22 predicate places. [2022-07-19 21:27:11,593 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 169 transitions, 501 flow [2022-07-19 21:27:11,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,593 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:11,593 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] [2022-07-19 21:27:11,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:27:11,594 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:11,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:11,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1107231657, now seen corresponding path program 1 times [2022-07-19 21:27:11,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:11,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467252316] [2022-07-19 21:27:11,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:11,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:11,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:11,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:11,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467252316] [2022-07-19 21:27:11,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467252316] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:11,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:11,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:11,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208373412] [2022-07-19 21:27:11,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:11,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:11,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:11,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:11,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:11,767 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:11,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 169 transitions, 501 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:11,770 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:11,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:12,082 INFO L129 PetriNetUnfolder]: 131/828 cut-off events. [2022-07-19 21:27:12,083 INFO L130 PetriNetUnfolder]: For 694/729 co-relation queries the response was YES. [2022-07-19 21:27:12,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1833 conditions, 828 events. 131/828 cut-off events. For 694/729 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5002 event pairs, 49 based on Foata normal form. 10/805 useless extension candidates. Maximal degree in co-relation 1487. Up to 176 conditions per place. [2022-07-19 21:27:12,088 INFO L132 encePairwiseOnDemand]: 161/176 looper letters, 38 selfloop transitions, 7 changer transitions 51/226 dead transitions. [2022-07-19 21:27:12,088 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 226 transitions, 918 flow [2022-07-19 21:27:12,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:27:12,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:27:12,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1950 transitions. [2022-07-19 21:27:12,093 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7913961038961039 [2022-07-19 21:27:12,093 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1950 transitions. [2022-07-19 21:27:12,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1950 transitions. [2022-07-19 21:27:12,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:12,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1950 transitions. [2022-07-19 21:27:12,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 139.28571428571428) internal successors, (1950), 14 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:12,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 176.0) internal successors, (2640), 15 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:12,102 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 176.0) internal successors, (2640), 15 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:12,102 INFO L186 Difference]: Start difference. First operand has 181 places, 169 transitions, 501 flow. Second operand 14 states and 1950 transitions. [2022-07-19 21:27:12,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 226 transitions, 918 flow [2022-07-19 21:27:12,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 226 transitions, 909 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-07-19 21:27:12,111 INFO L242 Difference]: Finished difference. Result has 202 places, 166 transitions, 546 flow [2022-07-19 21:27:12,111 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=546, PETRI_PLACES=202, PETRI_TRANSITIONS=166} [2022-07-19 21:27:12,112 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 43 predicate places. [2022-07-19 21:27:12,112 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 166 transitions, 546 flow [2022-07-19 21:27:12,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:12,113 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:12,113 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] [2022-07-19 21:27:12,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:27:12,114 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:12,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:12,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1346623849, now seen corresponding path program 1 times [2022-07-19 21:27:12,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:12,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590935023] [2022-07-19 21:27:12,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:12,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:12,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:12,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590935023] [2022-07-19 21:27:12,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590935023] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:12,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:12,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:12,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714027292] [2022-07-19 21:27:12,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:12,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:12,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:12,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:12,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:12,307 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:12,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 166 transitions, 546 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:12,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:12,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:12,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:12,637 INFO L129 PetriNetUnfolder]: 127/800 cut-off events. [2022-07-19 21:27:12,637 INFO L130 PetriNetUnfolder]: For 2137/2157 co-relation queries the response was YES. [2022-07-19 21:27:12,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2257 conditions, 800 events. 127/800 cut-off events. For 2137/2157 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4607 event pairs, 69 based on Foata normal form. 9/778 useless extension candidates. Maximal degree in co-relation 2211. Up to 229 conditions per place. [2022-07-19 21:27:12,644 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 54 selfloop transitions, 14 changer transitions 25/222 dead transitions. [2022-07-19 21:27:12,644 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 222 transitions, 1163 flow [2022-07-19 21:27:12,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:27:12,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:27:12,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2212 transitions. [2022-07-19 21:27:12,649 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7855113636363636 [2022-07-19 21:27:12,649 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2212 transitions. [2022-07-19 21:27:12,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2212 transitions. [2022-07-19 21:27:12,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:12,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2212 transitions. [2022-07-19 21:27:12,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 138.25) internal successors, (2212), 16 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:12,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:12,660 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:12,660 INFO L186 Difference]: Start difference. First operand has 202 places, 166 transitions, 546 flow. Second operand 16 states and 2212 transitions. [2022-07-19 21:27:12,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 222 transitions, 1163 flow [2022-07-19 21:27:12,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 222 transitions, 1000 flow, removed 76 selfloop flow, removed 10 redundant places. [2022-07-19 21:27:12,670 INFO L242 Difference]: Finished difference. Result has 208 places, 179 transitions, 674 flow [2022-07-19 21:27:12,671 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=674, PETRI_PLACES=208, PETRI_TRANSITIONS=179} [2022-07-19 21:27:12,671 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 49 predicate places. [2022-07-19 21:27:12,671 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 179 transitions, 674 flow [2022-07-19 21:27:12,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:12,672 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:12,672 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:12,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:27:12,673 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:12,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:12,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1999810905, now seen corresponding path program 2 times [2022-07-19 21:27:12,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:12,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015144981] [2022-07-19 21:27:12,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:12,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:12,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:12,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:12,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015144981] [2022-07-19 21:27:12,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015144981] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:12,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:12,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:12,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338359464] [2022-07-19 21:27:12,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:12,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:12,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:12,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:12,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:12,800 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:12,801 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 179 transitions, 674 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:12,801 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:12,801 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:12,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:13,219 INFO L129 PetriNetUnfolder]: 131/786 cut-off events. [2022-07-19 21:27:13,219 INFO L130 PetriNetUnfolder]: For 1870/1890 co-relation queries the response was YES. [2022-07-19 21:27:13,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2280 conditions, 786 events. 131/786 cut-off events. For 1870/1890 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4573 event pairs, 59 based on Foata normal form. 9/769 useless extension candidates. Maximal degree in co-relation 2200. Up to 199 conditions per place. [2022-07-19 21:27:13,227 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 81 selfloop transitions, 11 changer transitions 41/262 dead transitions. [2022-07-19 21:27:13,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 262 transitions, 1489 flow [2022-07-19 21:27:13,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:27:13,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:27:13,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3306 transitions. [2022-07-19 21:27:13,234 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7826704545454546 [2022-07-19 21:27:13,234 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3306 transitions. [2022-07-19 21:27:13,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3306 transitions. [2022-07-19 21:27:13,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:13,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3306 transitions. [2022-07-19 21:27:13,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 137.75) internal successors, (3306), 24 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:13,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:13,251 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:13,252 INFO L186 Difference]: Start difference. First operand has 208 places, 179 transitions, 674 flow. Second operand 24 states and 3306 transitions. [2022-07-19 21:27:13,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 262 transitions, 1489 flow [2022-07-19 21:27:13,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 262 transitions, 1351 flow, removed 68 selfloop flow, removed 9 redundant places. [2022-07-19 21:27:13,269 INFO L242 Difference]: Finished difference. Result has 236 places, 183 transitions, 741 flow [2022-07-19 21:27:13,269 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=741, PETRI_PLACES=236, PETRI_TRANSITIONS=183} [2022-07-19 21:27:13,271 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 77 predicate places. [2022-07-19 21:27:13,271 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 183 transitions, 741 flow [2022-07-19 21:27:13,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:13,272 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:13,272 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:13,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:27:13,273 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:13,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:13,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1549065623, now seen corresponding path program 3 times [2022-07-19 21:27:13,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:13,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25398044] [2022-07-19 21:27:13,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:13,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:13,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:13,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:13,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25398044] [2022-07-19 21:27:13,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25398044] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:13,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:13,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:13,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487456379] [2022-07-19 21:27:13,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:13,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:13,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:13,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:13,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:13,394 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:13,395 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 183 transitions, 741 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:13,395 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:13,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:13,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:13,743 INFO L129 PetriNetUnfolder]: 148/828 cut-off events. [2022-07-19 21:27:13,743 INFO L130 PetriNetUnfolder]: For 3899/3921 co-relation queries the response was YES. [2022-07-19 21:27:13,749 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2866 conditions, 828 events. 148/828 cut-off events. For 3899/3921 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4845 event pairs, 77 based on Foata normal form. 10/808 useless extension candidates. Maximal degree in co-relation 2773. Up to 251 conditions per place. [2022-07-19 21:27:13,753 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 67 selfloop transitions, 18 changer transitions 25/239 dead transitions. [2022-07-19 21:27:13,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 239 transitions, 1577 flow [2022-07-19 21:27:13,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:27:13,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:27:13,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2347 transitions. [2022-07-19 21:27:13,760 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7844251336898396 [2022-07-19 21:27:13,761 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2347 transitions. [2022-07-19 21:27:13,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2347 transitions. [2022-07-19 21:27:13,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:13,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2347 transitions. [2022-07-19 21:27:13,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 138.05882352941177) internal successors, (2347), 17 states have internal predecessors, (2347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:13,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:13,780 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:13,781 INFO L186 Difference]: Start difference. First operand has 236 places, 183 transitions, 741 flow. Second operand 17 states and 2347 transitions. [2022-07-19 21:27:13,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 239 transitions, 1577 flow [2022-07-19 21:27:13,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 239 transitions, 1369 flow, removed 100 selfloop flow, removed 15 redundant places. [2022-07-19 21:27:13,803 INFO L242 Difference]: Finished difference. Result has 232 places, 198 transitions, 943 flow [2022-07-19 21:27:13,803 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=943, PETRI_PLACES=232, PETRI_TRANSITIONS=198} [2022-07-19 21:27:13,804 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 73 predicate places. [2022-07-19 21:27:13,804 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 198 transitions, 943 flow [2022-07-19 21:27:13,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:13,805 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:13,805 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] [2022-07-19 21:27:13,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:27:13,806 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:13,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:13,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1771293929, now seen corresponding path program 4 times [2022-07-19 21:27:13,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:13,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468923115] [2022-07-19 21:27:13,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:13,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:13,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:13,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468923115] [2022-07-19 21:27:13,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468923115] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:13,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:13,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:13,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141037878] [2022-07-19 21:27:13,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:13,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:13,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:13,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:13,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:13,942 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:13,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 198 transitions, 943 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:13,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:13,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:13,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:14,316 INFO L129 PetriNetUnfolder]: 155/864 cut-off events. [2022-07-19 21:27:14,316 INFO L130 PetriNetUnfolder]: For 3195/3219 co-relation queries the response was YES. [2022-07-19 21:27:14,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2900 conditions, 864 events. 155/864 cut-off events. For 3195/3219 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 5171 event pairs, 76 based on Foata normal form. 10/841 useless extension candidates. Maximal degree in co-relation 2808. Up to 235 conditions per place. [2022-07-19 21:27:14,325 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 78 selfloop transitions, 20 changer transitions 33/260 dead transitions. [2022-07-19 21:27:14,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 260 transitions, 1829 flow [2022-07-19 21:27:14,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:27:14,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:27:14,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2756 transitions. [2022-07-19 21:27:14,329 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7829545454545455 [2022-07-19 21:27:14,329 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2756 transitions. [2022-07-19 21:27:14,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2756 transitions. [2022-07-19 21:27:14,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:14,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2756 transitions. [2022-07-19 21:27:14,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.8) internal successors, (2756), 20 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,340 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,340 INFO L186 Difference]: Start difference. First operand has 232 places, 198 transitions, 943 flow. Second operand 20 states and 2756 transitions. [2022-07-19 21:27:14,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 260 transitions, 1829 flow [2022-07-19 21:27:14,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 260 transitions, 1676 flow, removed 74 selfloop flow, removed 11 redundant places. [2022-07-19 21:27:14,359 INFO L242 Difference]: Finished difference. Result has 249 places, 209 transitions, 1085 flow [2022-07-19 21:27:14,360 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1085, PETRI_PLACES=249, PETRI_TRANSITIONS=209} [2022-07-19 21:27:14,360 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 90 predicate places. [2022-07-19 21:27:14,361 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 209 transitions, 1085 flow [2022-07-19 21:27:14,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,361 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:14,362 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] [2022-07-19 21:27:14,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:27:14,362 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:14,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:14,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1295898935, now seen corresponding path program 5 times [2022-07-19 21:27:14,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:14,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993209540] [2022-07-19 21:27:14,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:14,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:14,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:14,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:14,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993209540] [2022-07-19 21:27:14,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993209540] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:14,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:14,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:14,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450545233] [2022-07-19 21:27:14,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:14,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:14,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:14,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:14,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:14,498 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:14,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 209 transitions, 1085 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:14,499 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:14,499 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:14,905 INFO L129 PetriNetUnfolder]: 152/860 cut-off events. [2022-07-19 21:27:14,905 INFO L130 PetriNetUnfolder]: For 3729/3757 co-relation queries the response was YES. [2022-07-19 21:27:14,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2990 conditions, 860 events. 152/860 cut-off events. For 3729/3757 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5187 event pairs, 66 based on Foata normal form. 9/838 useless extension candidates. Maximal degree in co-relation 2891. Up to 200 conditions per place. [2022-07-19 21:27:14,916 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 97 selfloop transitions, 25 changer transitions 42/293 dead transitions. [2022-07-19 21:27:14,916 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 293 transitions, 2288 flow [2022-07-19 21:27:14,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:27:14,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:27:14,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3304 transitions. [2022-07-19 21:27:14,921 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7821969696969697 [2022-07-19 21:27:14,921 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3304 transitions. [2022-07-19 21:27:14,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3304 transitions. [2022-07-19 21:27:14,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:14,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3304 transitions. [2022-07-19 21:27:14,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 137.66666666666666) internal successors, (3304), 24 states have internal predecessors, (3304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,936 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,936 INFO L186 Difference]: Start difference. First operand has 249 places, 209 transitions, 1085 flow. Second operand 24 states and 3304 transitions. [2022-07-19 21:27:14,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 293 transitions, 2288 flow [2022-07-19 21:27:14,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 293 transitions, 2124 flow, removed 75 selfloop flow, removed 12 redundant places. [2022-07-19 21:27:14,961 INFO L242 Difference]: Finished difference. Result has 267 places, 211 transitions, 1179 flow [2022-07-19 21:27:14,962 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1179, PETRI_PLACES=267, PETRI_TRANSITIONS=211} [2022-07-19 21:27:14,962 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 108 predicate places. [2022-07-19 21:27:14,962 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 211 transitions, 1179 flow [2022-07-19 21:27:14,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,963 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:14,963 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] [2022-07-19 21:27:14,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:27:14,964 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:14,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:14,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1308926351, now seen corresponding path program 6 times [2022-07-19 21:27:14,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:14,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087697090] [2022-07-19 21:27:14,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:14,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:15,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:15,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:15,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087697090] [2022-07-19 21:27:15,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087697090] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:15,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:15,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:15,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278037885] [2022-07-19 21:27:15,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:15,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:15,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:15,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:15,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:15,089 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:15,090 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 211 transitions, 1179 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:15,090 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:15,090 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:15,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:15,509 INFO L129 PetriNetUnfolder]: 169/957 cut-off events. [2022-07-19 21:27:15,509 INFO L130 PetriNetUnfolder]: For 4574/4598 co-relation queries the response was YES. [2022-07-19 21:27:15,517 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3461 conditions, 957 events. 169/957 cut-off events. For 4574/4598 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6144 event pairs, 71 based on Foata normal form. 10/938 useless extension candidates. Maximal degree in co-relation 3364. Up to 268 conditions per place. [2022-07-19 21:27:15,521 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 87 selfloop transitions, 27 changer transitions 32/275 dead transitions. [2022-07-19 21:27:15,522 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 275 transitions, 2245 flow [2022-07-19 21:27:15,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:27:15,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:27:15,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3022 transitions. [2022-07-19 21:27:15,526 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7804752066115702 [2022-07-19 21:27:15,526 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3022 transitions. [2022-07-19 21:27:15,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3022 transitions. [2022-07-19 21:27:15,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:15,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3022 transitions. [2022-07-19 21:27:15,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.36363636363637) internal successors, (3022), 22 states have internal predecessors, (3022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:15,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:15,537 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:15,537 INFO L186 Difference]: Start difference. First operand has 267 places, 211 transitions, 1179 flow. Second operand 22 states and 3022 transitions. [2022-07-19 21:27:15,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 275 transitions, 2245 flow [2022-07-19 21:27:15,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 275 transitions, 2146 flow, removed 24 selfloop flow, removed 17 redundant places. [2022-07-19 21:27:15,563 INFO L242 Difference]: Finished difference. Result has 269 places, 222 transitions, 1388 flow [2022-07-19 21:27:15,564 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1388, PETRI_PLACES=269, PETRI_TRANSITIONS=222} [2022-07-19 21:27:15,565 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 110 predicate places. [2022-07-19 21:27:15,565 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 222 transitions, 1388 flow [2022-07-19 21:27:15,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:15,566 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:15,566 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] [2022-07-19 21:27:15,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 21:27:15,567 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:15,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:15,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1877607927, now seen corresponding path program 7 times [2022-07-19 21:27:15,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:15,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873133207] [2022-07-19 21:27:15,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:15,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:15,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:15,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:15,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873133207] [2022-07-19 21:27:15,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873133207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:15,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:15,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:15,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936189888] [2022-07-19 21:27:15,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:15,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:15,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:15,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:15,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:15,706 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:15,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 222 transitions, 1388 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:15,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:15,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:15,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:16,108 INFO L129 PetriNetUnfolder]: 165/952 cut-off events. [2022-07-19 21:27:16,109 INFO L130 PetriNetUnfolder]: For 5427/5454 co-relation queries the response was YES. [2022-07-19 21:27:16,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 952 events. 165/952 cut-off events. For 5427/5454 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6132 event pairs, 75 based on Foata normal form. 9/932 useless extension candidates. Maximal degree in co-relation 3478. Up to 261 conditions per place. [2022-07-19 21:27:16,123 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 87 selfloop transitions, 28 changer transitions 33/277 dead transitions. [2022-07-19 21:27:16,123 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 277 transitions, 2436 flow [2022-07-19 21:27:16,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:27:16,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:27:16,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2891 transitions. [2022-07-19 21:27:16,149 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7821969696969697 [2022-07-19 21:27:16,149 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2891 transitions. [2022-07-19 21:27:16,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2891 transitions. [2022-07-19 21:27:16,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:16,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2891 transitions. [2022-07-19 21:27:16,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.66666666666666) internal successors, (2891), 21 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:16,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:16,161 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:16,161 INFO L186 Difference]: Start difference. First operand has 269 places, 222 transitions, 1388 flow. Second operand 21 states and 2891 transitions. [2022-07-19 21:27:16,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 277 transitions, 2436 flow [2022-07-19 21:27:16,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 277 transitions, 2306 flow, removed 58 selfloop flow, removed 11 redundant places. [2022-07-19 21:27:16,190 INFO L242 Difference]: Finished difference. Result has 280 places, 228 transitions, 1563 flow [2022-07-19 21:27:16,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1563, PETRI_PLACES=280, PETRI_TRANSITIONS=228} [2022-07-19 21:27:16,192 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 121 predicate places. [2022-07-19 21:27:16,192 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 228 transitions, 1563 flow [2022-07-19 21:27:16,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:16,193 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:16,193 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] [2022-07-19 21:27:16,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 21:27:16,193 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:16,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:16,194 INFO L85 PathProgramCache]: Analyzing trace with hash -6717397, now seen corresponding path program 8 times [2022-07-19 21:27:16,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:16,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179621012] [2022-07-19 21:27:16,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:16,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:16,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:16,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:16,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179621012] [2022-07-19 21:27:16,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179621012] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:16,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:16,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:16,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385227304] [2022-07-19 21:27:16,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:16,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:16,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:16,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:16,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:16,319 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:16,321 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 228 transitions, 1563 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:16,321 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:16,321 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:16,321 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:16,709 INFO L129 PetriNetUnfolder]: 152/922 cut-off events. [2022-07-19 21:27:16,710 INFO L130 PetriNetUnfolder]: For 5277/5302 co-relation queries the response was YES. [2022-07-19 21:27:16,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3450 conditions, 922 events. 152/922 cut-off events. For 5277/5302 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5797 event pairs, 67 based on Foata normal form. 11/905 useless extension candidates. Maximal degree in co-relation 3340. Up to 271 conditions per place. [2022-07-19 21:27:16,722 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 86 selfloop transitions, 32 changer transitions 27/274 dead transitions. [2022-07-19 21:27:16,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 274 transitions, 2486 flow [2022-07-19 21:27:16,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:27:16,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:27:16,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2478 transitions. [2022-07-19 21:27:16,726 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7821969696969697 [2022-07-19 21:27:16,726 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2478 transitions. [2022-07-19 21:27:16,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2478 transitions. [2022-07-19 21:27:16,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:16,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2478 transitions. [2022-07-19 21:27:16,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.66666666666666) internal successors, (2478), 18 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:16,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:16,737 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:16,737 INFO L186 Difference]: Start difference. First operand has 280 places, 228 transitions, 1563 flow. Second operand 18 states and 2478 transitions. [2022-07-19 21:27:16,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 274 transitions, 2486 flow [2022-07-19 21:27:16,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 274 transitions, 2311 flow, removed 67 selfloop flow, removed 14 redundant places. [2022-07-19 21:27:16,772 INFO L242 Difference]: Finished difference. Result has 279 places, 235 transitions, 1685 flow [2022-07-19 21:27:16,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1685, PETRI_PLACES=279, PETRI_TRANSITIONS=235} [2022-07-19 21:27:16,773 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 120 predicate places. [2022-07-19 21:27:16,774 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 235 transitions, 1685 flow [2022-07-19 21:27:16,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:16,774 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:16,774 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] [2022-07-19 21:27:16,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 21:27:16,775 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:16,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:16,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1255932177, now seen corresponding path program 9 times [2022-07-19 21:27:16,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:16,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97995548] [2022-07-19 21:27:16,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:16,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:16,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:16,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:16,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97995548] [2022-07-19 21:27:16,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97995548] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:16,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:16,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:16,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615820749] [2022-07-19 21:27:16,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:16,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:16,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:16,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:16,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:16,918 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:16,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 235 transitions, 1685 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:16,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:16,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:16,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:17,299 INFO L129 PetriNetUnfolder]: 149/917 cut-off events. [2022-07-19 21:27:17,300 INFO L130 PetriNetUnfolder]: For 4834/4870 co-relation queries the response was YES. [2022-07-19 21:27:17,306 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3380 conditions, 917 events. 149/917 cut-off events. For 4834/4870 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5810 event pairs, 70 based on Foata normal form. 12/899 useless extension candidates. Maximal degree in co-relation 3270. Up to 272 conditions per place. [2022-07-19 21:27:17,310 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 85 selfloop transitions, 33 changer transitions 33/280 dead transitions. [2022-07-19 21:27:17,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 280 transitions, 2600 flow [2022-07-19 21:27:17,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:27:17,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:27:17,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2751 transitions. [2022-07-19 21:27:17,315 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7815340909090909 [2022-07-19 21:27:17,315 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2751 transitions. [2022-07-19 21:27:17,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2751 transitions. [2022-07-19 21:27:17,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:17,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2751 transitions. [2022-07-19 21:27:17,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.55) internal successors, (2751), 20 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:17,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:17,324 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:17,324 INFO L186 Difference]: Start difference. First operand has 279 places, 235 transitions, 1685 flow. Second operand 20 states and 2751 transitions. [2022-07-19 21:27:17,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 280 transitions, 2600 flow [2022-07-19 21:27:17,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 280 transitions, 2470 flow, removed 37 selfloop flow, removed 10 redundant places. [2022-07-19 21:27:17,355 INFO L242 Difference]: Finished difference. Result has 292 places, 238 transitions, 1765 flow [2022-07-19 21:27:17,356 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1765, PETRI_PLACES=292, PETRI_TRANSITIONS=238} [2022-07-19 21:27:17,357 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 133 predicate places. [2022-07-19 21:27:17,357 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 238 transitions, 1765 flow [2022-07-19 21:27:17,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:17,358 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:17,358 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] [2022-07-19 21:27:17,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 21:27:17,358 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:17,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:17,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1455674899, now seen corresponding path program 10 times [2022-07-19 21:27:17,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:17,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053370556] [2022-07-19 21:27:17,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:17,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:17,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:17,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:17,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053370556] [2022-07-19 21:27:17,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053370556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:17,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:17,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:17,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025660166] [2022-07-19 21:27:17,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:17,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:17,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:17,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:17,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:17,481 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:17,482 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 238 transitions, 1765 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:17,482 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:17,482 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:17,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:17,823 INFO L129 PetriNetUnfolder]: 133/862 cut-off events. [2022-07-19 21:27:17,823 INFO L130 PetriNetUnfolder]: For 4303/4328 co-relation queries the response was YES. [2022-07-19 21:27:17,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3092 conditions, 862 events. 133/862 cut-off events. For 4303/4328 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 5267 event pairs, 63 based on Foata normal form. 11/845 useless extension candidates. Maximal degree in co-relation 3006. Up to 259 conditions per place. [2022-07-19 21:27:17,833 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 82 selfloop transitions, 21 changer transitions 31/263 dead transitions. [2022-07-19 21:27:17,834 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 263 transitions, 2299 flow [2022-07-19 21:27:17,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:27:17,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:27:17,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2201 transitions. [2022-07-19 21:27:17,837 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7816051136363636 [2022-07-19 21:27:17,837 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2201 transitions. [2022-07-19 21:27:17,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2201 transitions. [2022-07-19 21:27:17,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:17,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2201 transitions. [2022-07-19 21:27:17,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.5625) internal successors, (2201), 16 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:17,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:17,844 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:17,844 INFO L186 Difference]: Start difference. First operand has 292 places, 238 transitions, 1765 flow. Second operand 16 states and 2201 transitions. [2022-07-19 21:27:17,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 263 transitions, 2299 flow [2022-07-19 21:27:17,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 263 transitions, 2194 flow, removed 31 selfloop flow, removed 12 redundant places. [2022-07-19 21:27:17,876 INFO L242 Difference]: Finished difference. Result has 288 places, 222 transitions, 1469 flow [2022-07-19 21:27:17,877 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1469, PETRI_PLACES=288, PETRI_TRANSITIONS=222} [2022-07-19 21:27:17,877 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 129 predicate places. [2022-07-19 21:27:17,877 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 222 transitions, 1469 flow [2022-07-19 21:27:17,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:17,878 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:17,878 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] [2022-07-19 21:27:17,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 21:27:17,879 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:17,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:17,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1878967331, now seen corresponding path program 11 times [2022-07-19 21:27:17,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:17,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838432972] [2022-07-19 21:27:17,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:17,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:17,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:17,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:17,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838432972] [2022-07-19 21:27:17,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838432972] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:17,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:17,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:17,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183912423] [2022-07-19 21:27:17,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:17,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:17,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:17,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:17,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:17,992 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:17,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 222 transitions, 1469 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:17,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:17,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:17,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:18,344 INFO L129 PetriNetUnfolder]: 130/845 cut-off events. [2022-07-19 21:27:18,345 INFO L130 PetriNetUnfolder]: For 4148/4180 co-relation queries the response was YES. [2022-07-19 21:27:18,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3010 conditions, 845 events. 130/845 cut-off events. For 4148/4180 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5084 event pairs, 65 based on Foata normal form. 11/827 useless extension candidates. Maximal degree in co-relation 2945. Up to 252 conditions per place. [2022-07-19 21:27:18,355 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 76 selfloop transitions, 25 changer transitions 30/260 dead transitions. [2022-07-19 21:27:18,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 260 transitions, 2232 flow [2022-07-19 21:27:18,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:27:18,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:27:18,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2481 transitions. [2022-07-19 21:27:18,359 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7831439393939394 [2022-07-19 21:27:18,359 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2481 transitions. [2022-07-19 21:27:18,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2481 transitions. [2022-07-19 21:27:18,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:18,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2481 transitions. [2022-07-19 21:27:18,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.83333333333334) internal successors, (2481), 18 states have internal predecessors, (2481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:18,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:18,367 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:18,368 INFO L186 Difference]: Start difference. First operand has 288 places, 222 transitions, 1469 flow. Second operand 18 states and 2481 transitions. [2022-07-19 21:27:18,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 260 transitions, 2232 flow [2022-07-19 21:27:18,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 260 transitions, 2116 flow, removed 16 selfloop flow, removed 13 redundant places. [2022-07-19 21:27:18,394 INFO L242 Difference]: Finished difference. Result has 278 places, 224 transitions, 1512 flow [2022-07-19 21:27:18,395 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1512, PETRI_PLACES=278, PETRI_TRANSITIONS=224} [2022-07-19 21:27:18,395 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 119 predicate places. [2022-07-19 21:27:18,395 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 224 transitions, 1512 flow [2022-07-19 21:27:18,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:18,396 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:18,396 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] [2022-07-19 21:27:18,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 21:27:18,397 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:18,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:18,397 INFO L85 PathProgramCache]: Analyzing trace with hash 279000489, now seen corresponding path program 12 times [2022-07-19 21:27:18,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:18,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477330932] [2022-07-19 21:27:18,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:18,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:18,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:18,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:18,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477330932] [2022-07-19 21:27:18,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477330932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:18,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:18,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:18,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736576807] [2022-07-19 21:27:18,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:18,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:18,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:18,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:18,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:18,515 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:18,516 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 224 transitions, 1512 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:18,516 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:18,516 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:18,516 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:18,895 INFO L129 PetriNetUnfolder]: 122/823 cut-off events. [2022-07-19 21:27:18,896 INFO L130 PetriNetUnfolder]: For 3531/3554 co-relation queries the response was YES. [2022-07-19 21:27:18,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2820 conditions, 823 events. 122/823 cut-off events. For 3531/3554 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4912 event pairs, 67 based on Foata normal form. 9/802 useless extension candidates. Maximal degree in co-relation 2757. Up to 249 conditions per place. [2022-07-19 21:27:18,905 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 74 selfloop transitions, 16 changer transitions 30/249 dead transitions. [2022-07-19 21:27:18,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 249 transitions, 2027 flow [2022-07-19 21:27:18,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:27:18,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:27:18,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2340 transitions. [2022-07-19 21:27:18,909 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7820855614973262 [2022-07-19 21:27:18,909 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2340 transitions. [2022-07-19 21:27:18,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2340 transitions. [2022-07-19 21:27:18,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:18,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2340 transitions. [2022-07-19 21:27:18,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.64705882352942) internal successors, (2340), 17 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:18,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:18,923 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:18,923 INFO L186 Difference]: Start difference. First operand has 278 places, 224 transitions, 1512 flow. Second operand 17 states and 2340 transitions. [2022-07-19 21:27:18,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 249 transitions, 2027 flow [2022-07-19 21:27:18,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 249 transitions, 1908 flow, removed 34 selfloop flow, removed 8 redundant places. [2022-07-19 21:27:18,949 INFO L242 Difference]: Finished difference. Result has 284 places, 215 transitions, 1318 flow [2022-07-19 21:27:18,950 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1418, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1318, PETRI_PLACES=284, PETRI_TRANSITIONS=215} [2022-07-19 21:27:18,951 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 125 predicate places. [2022-07-19 21:27:18,951 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 215 transitions, 1318 flow [2022-07-19 21:27:18,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:18,952 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:18,952 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] [2022-07-19 21:27:18,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 21:27:18,954 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:18,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:18,954 INFO L85 PathProgramCache]: Analyzing trace with hash -156541461, now seen corresponding path program 13 times [2022-07-19 21:27:18,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:18,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843947015] [2022-07-19 21:27:18,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:18,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:19,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:19,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:19,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843947015] [2022-07-19 21:27:19,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843947015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:19,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:19,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:19,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818732608] [2022-07-19 21:27:19,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:19,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:19,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:19,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:19,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:19,072 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:19,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 215 transitions, 1318 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:19,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:19,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:19,411 INFO L129 PetriNetUnfolder]: 109/760 cut-off events. [2022-07-19 21:27:19,412 INFO L130 PetriNetUnfolder]: For 2786/2809 co-relation queries the response was YES. [2022-07-19 21:27:19,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2473 conditions, 760 events. 109/760 cut-off events. For 2786/2809 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4356 event pairs, 62 based on Foata normal form. 9/741 useless extension candidates. Maximal degree in co-relation 2409. Up to 237 conditions per place. [2022-07-19 21:27:19,427 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 64 selfloop transitions, 5 changer transitions 33/231 dead transitions. [2022-07-19 21:27:19,428 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 231 transitions, 1643 flow [2022-07-19 21:27:19,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:27:19,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:27:19,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2465 transitions. [2022-07-19 21:27:19,431 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7780934343434344 [2022-07-19 21:27:19,431 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2465 transitions. [2022-07-19 21:27:19,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2465 transitions. [2022-07-19 21:27:19,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:19,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2465 transitions. [2022-07-19 21:27:19,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.94444444444446) internal successors, (2465), 18 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,438 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,439 INFO L186 Difference]: Start difference. First operand has 284 places, 215 transitions, 1318 flow. Second operand 18 states and 2465 transitions. [2022-07-19 21:27:19,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 231 transitions, 1643 flow [2022-07-19 21:27:19,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 231 transitions, 1529 flow, removed 16 selfloop flow, removed 20 redundant places. [2022-07-19 21:27:19,462 INFO L242 Difference]: Finished difference. Result has 270 places, 195 transitions, 962 flow [2022-07-19 21:27:19,462 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=962, PETRI_PLACES=270, PETRI_TRANSITIONS=195} [2022-07-19 21:27:19,463 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 111 predicate places. [2022-07-19 21:27:19,463 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 195 transitions, 962 flow [2022-07-19 21:27:19,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,463 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:19,464 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] [2022-07-19 21:27:19,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 21:27:19,464 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:19,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:19,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1718238291, now seen corresponding path program 14 times [2022-07-19 21:27:19,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:19,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543792734] [2022-07-19 21:27:19,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:19,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:19,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:19,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:19,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543792734] [2022-07-19 21:27:19,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543792734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:19,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:19,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:19,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447183851] [2022-07-19 21:27:19,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:19,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:19,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:19,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:19,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:19,569 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:19,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 195 transitions, 962 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:19,570 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:19,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:19,956 INFO L129 PetriNetUnfolder]: 113/780 cut-off events. [2022-07-19 21:27:19,956 INFO L130 PetriNetUnfolder]: For 2591/2611 co-relation queries the response was YES. [2022-07-19 21:27:19,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2482 conditions, 780 events. 113/780 cut-off events. For 2591/2611 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4553 event pairs, 60 based on Foata normal form. 9/762 useless extension candidates. Maximal degree in co-relation 2424. Up to 212 conditions per place. [2022-07-19 21:27:19,965 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 59 selfloop transitions, 22 changer transitions 34/244 dead transitions. [2022-07-19 21:27:19,965 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 244 transitions, 1745 flow [2022-07-19 21:27:19,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:27:19,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:27:19,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3017 transitions. [2022-07-19 21:27:19,969 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7791838842975206 [2022-07-19 21:27:19,969 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3017 transitions. [2022-07-19 21:27:19,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3017 transitions. [2022-07-19 21:27:19,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:19,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3017 transitions. [2022-07-19 21:27:19,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.13636363636363) internal successors, (3017), 22 states have internal predecessors, (3017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,981 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,981 INFO L186 Difference]: Start difference. First operand has 270 places, 195 transitions, 962 flow. Second operand 22 states and 3017 transitions. [2022-07-19 21:27:19,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 244 transitions, 1745 flow [2022-07-19 21:27:19,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 244 transitions, 1589 flow, removed 39 selfloop flow, removed 19 redundant places. [2022-07-19 21:27:19,997 INFO L242 Difference]: Finished difference. Result has 258 places, 200 transitions, 1043 flow [2022-07-19 21:27:19,997 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1043, PETRI_PLACES=258, PETRI_TRANSITIONS=200} [2022-07-19 21:27:19,998 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 99 predicate places. [2022-07-19 21:27:19,998 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 200 transitions, 1043 flow [2022-07-19 21:27:19,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,999 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:19,999 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] [2022-07-19 21:27:19,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 21:27:19,999 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:19,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:20,000 INFO L85 PathProgramCache]: Analyzing trace with hash -60478949, now seen corresponding path program 15 times [2022-07-19 21:27:20,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:20,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836880361] [2022-07-19 21:27:20,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:20,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:20,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:20,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:20,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836880361] [2022-07-19 21:27:20,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836880361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:20,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:20,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:20,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051615271] [2022-07-19 21:27:20,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:20,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:20,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:20,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:20,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:20,116 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:20,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 200 transitions, 1043 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:20,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:20,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:20,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:20,392 INFO L129 PetriNetUnfolder]: 114/791 cut-off events. [2022-07-19 21:27:20,393 INFO L130 PetriNetUnfolder]: For 2859/2879 co-relation queries the response was YES. [2022-07-19 21:27:20,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2561 conditions, 791 events. 114/791 cut-off events. For 2859/2879 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4699 event pairs, 57 based on Foata normal form. 9/774 useless extension candidates. Maximal degree in co-relation 2504. Up to 218 conditions per place. [2022-07-19 21:27:20,402 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 60 selfloop transitions, 27 changer transitions 27/243 dead transitions. [2022-07-19 21:27:20,402 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 243 transitions, 1780 flow [2022-07-19 21:27:20,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:27:20,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:27:20,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2342 transitions. [2022-07-19 21:27:20,405 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7827540106951871 [2022-07-19 21:27:20,405 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2342 transitions. [2022-07-19 21:27:20,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2342 transitions. [2022-07-19 21:27:20,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:20,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2342 transitions. [2022-07-19 21:27:20,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.76470588235293) internal successors, (2342), 17 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:20,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:20,412 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:20,412 INFO L186 Difference]: Start difference. First operand has 258 places, 200 transitions, 1043 flow. Second operand 17 states and 2342 transitions. [2022-07-19 21:27:20,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 243 transitions, 1780 flow [2022-07-19 21:27:20,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 243 transitions, 1688 flow, removed 33 selfloop flow, removed 13 redundant places. [2022-07-19 21:27:20,430 INFO L242 Difference]: Finished difference. Result has 257 places, 208 transitions, 1208 flow [2022-07-19 21:27:20,431 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1208, PETRI_PLACES=257, PETRI_TRANSITIONS=208} [2022-07-19 21:27:20,431 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 98 predicate places. [2022-07-19 21:27:20,431 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 208 transitions, 1208 flow [2022-07-19 21:27:20,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:20,432 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:20,432 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] [2022-07-19 21:27:20,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 21:27:20,433 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:20,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:20,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1771188031, now seen corresponding path program 16 times [2022-07-19 21:27:20,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:20,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895190401] [2022-07-19 21:27:20,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:20,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:20,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:20,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:20,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895190401] [2022-07-19 21:27:20,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895190401] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:20,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:20,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:20,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735822097] [2022-07-19 21:27:20,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:20,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:20,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:20,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:20,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:20,535 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:20,536 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 208 transitions, 1208 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:20,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:20,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:20,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:20,837 INFO L129 PetriNetUnfolder]: 103/750 cut-off events. [2022-07-19 21:27:20,837 INFO L130 PetriNetUnfolder]: For 2379/2399 co-relation queries the response was YES. [2022-07-19 21:27:20,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2372 conditions, 750 events. 103/750 cut-off events. For 2379/2399 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4334 event pairs, 59 based on Foata normal form. 9/732 useless extension candidates. Maximal degree in co-relation 2316. Up to 213 conditions per place. [2022-07-19 21:27:20,845 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 57 selfloop transitions, 13 changer transitions 33/232 dead transitions. [2022-07-19 21:27:20,845 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 232 transitions, 1628 flow [2022-07-19 21:27:20,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:27:20,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:27:20,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2471 transitions. [2022-07-19 21:27:20,848 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7799873737373737 [2022-07-19 21:27:20,848 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2471 transitions. [2022-07-19 21:27:20,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2471 transitions. [2022-07-19 21:27:20,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:20,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2471 transitions. [2022-07-19 21:27:20,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.27777777777777) internal successors, (2471), 18 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:20,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:20,856 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:20,856 INFO L186 Difference]: Start difference. First operand has 257 places, 208 transitions, 1208 flow. Second operand 18 states and 2471 transitions. [2022-07-19 21:27:20,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 232 transitions, 1628 flow [2022-07-19 21:27:20,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 232 transitions, 1518 flow, removed 33 selfloop flow, removed 9 redundant places. [2022-07-19 21:27:20,875 INFO L242 Difference]: Finished difference. Result has 264 places, 193 transitions, 948 flow [2022-07-19 21:27:20,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=948, PETRI_PLACES=264, PETRI_TRANSITIONS=193} [2022-07-19 21:27:20,876 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 105 predicate places. [2022-07-19 21:27:20,876 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 193 transitions, 948 flow [2022-07-19 21:27:20,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:20,876 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:20,877 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] [2022-07-19 21:27:20,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 21:27:20,877 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:20,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:20,878 INFO L85 PathProgramCache]: Analyzing trace with hash -603979919, now seen corresponding path program 17 times [2022-07-19 21:27:20,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:20,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641310798] [2022-07-19 21:27:20,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:20,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:20,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:20,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:20,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641310798] [2022-07-19 21:27:20,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641310798] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:20,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:20,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:20,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482282754] [2022-07-19 21:27:20,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:20,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:20,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:20,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:20,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:20,986 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:20,987 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 193 transitions, 948 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:20,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:20,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:20,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:21,345 INFO L129 PetriNetUnfolder]: 102/742 cut-off events. [2022-07-19 21:27:21,346 INFO L130 PetriNetUnfolder]: For 2666/2686 co-relation queries the response was YES. [2022-07-19 21:27:21,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2354 conditions, 742 events. 102/742 cut-off events. For 2666/2686 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4282 event pairs, 57 based on Foata normal form. 9/725 useless extension candidates. Maximal degree in co-relation 2297. Up to 204 conditions per place. [2022-07-19 21:27:21,352 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 53 selfloop transitions, 19 changer transitions 34/235 dead transitions. [2022-07-19 21:27:21,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 235 transitions, 1724 flow [2022-07-19 21:27:21,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:27:21,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:27:21,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2880 transitions. [2022-07-19 21:27:21,356 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7792207792207793 [2022-07-19 21:27:21,356 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2880 transitions. [2022-07-19 21:27:21,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2880 transitions. [2022-07-19 21:27:21,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:21,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2880 transitions. [2022-07-19 21:27:21,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.14285714285714) internal successors, (2880), 21 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,364 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,364 INFO L186 Difference]: Start difference. First operand has 264 places, 193 transitions, 948 flow. Second operand 21 states and 2880 transitions. [2022-07-19 21:27:21,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 235 transitions, 1724 flow [2022-07-19 21:27:21,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 235 transitions, 1558 flow, removed 39 selfloop flow, removed 18 redundant places. [2022-07-19 21:27:21,379 INFO L242 Difference]: Finished difference. Result has 256 places, 196 transitions, 1015 flow [2022-07-19 21:27:21,380 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1015, PETRI_PLACES=256, PETRI_TRANSITIONS=196} [2022-07-19 21:27:21,380 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 97 predicate places. [2022-07-19 21:27:21,380 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 196 transitions, 1015 flow [2022-07-19 21:27:21,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,381 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:21,381 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:21,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 21:27:21,382 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:21,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:21,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1772295727, now seen corresponding path program 18 times [2022-07-19 21:27:21,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:21,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160711012] [2022-07-19 21:27:21,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:21,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:21,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:21,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:21,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160711012] [2022-07-19 21:27:21,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160711012] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:21,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:21,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:21,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015217643] [2022-07-19 21:27:21,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:21,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:21,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:21,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:21,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:21,475 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:21,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 196 transitions, 1015 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:21,476 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:21,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:21,772 INFO L129 PetriNetUnfolder]: 96/717 cut-off events. [2022-07-19 21:27:21,772 INFO L130 PetriNetUnfolder]: For 2281/2301 co-relation queries the response was YES. [2022-07-19 21:27:21,777 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2228 conditions, 717 events. 96/717 cut-off events. For 2281/2301 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4060 event pairs, 59 based on Foata normal form. 9/700 useless extension candidates. Maximal degree in co-relation 2171. Up to 208 conditions per place. [2022-07-19 21:27:21,779 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 49 selfloop transitions, 21 changer transitions 30/229 dead transitions. [2022-07-19 21:27:21,780 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 229 transitions, 1631 flow [2022-07-19 21:27:21,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:27:21,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:27:21,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2475 transitions. [2022-07-19 21:27:21,786 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.78125 [2022-07-19 21:27:21,786 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2475 transitions. [2022-07-19 21:27:21,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2475 transitions. [2022-07-19 21:27:21,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:21,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2475 transitions. [2022-07-19 21:27:21,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.5) internal successors, (2475), 18 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,796 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,796 INFO L186 Difference]: Start difference. First operand has 256 places, 196 transitions, 1015 flow. Second operand 18 states and 2475 transitions. [2022-07-19 21:27:21,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 229 transitions, 1631 flow [2022-07-19 21:27:21,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 229 transitions, 1476 flow, removed 59 selfloop flow, removed 15 redundant places. [2022-07-19 21:27:21,811 INFO L242 Difference]: Finished difference. Result has 250 places, 197 transitions, 1033 flow [2022-07-19 21:27:21,811 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1033, PETRI_PLACES=250, PETRI_TRANSITIONS=197} [2022-07-19 21:27:21,812 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 91 predicate places. [2022-07-19 21:27:21,812 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 197 transitions, 1033 flow [2022-07-19 21:27:21,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,813 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:21,813 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] [2022-07-19 21:27:21,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 21:27:21,813 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:21,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:21,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1691963201, now seen corresponding path program 19 times [2022-07-19 21:27:21,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:21,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879913536] [2022-07-19 21:27:21,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:21,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:21,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:21,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:21,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879913536] [2022-07-19 21:27:21,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879913536] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:21,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:21,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:21,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570159093] [2022-07-19 21:27:21,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:21,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:21,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:21,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:21,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:21,919 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:21,920 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 197 transitions, 1033 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,920 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:21,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:21,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:22,260 INFO L129 PetriNetUnfolder]: 93/706 cut-off events. [2022-07-19 21:27:22,260 INFO L130 PetriNetUnfolder]: For 1769/1789 co-relation queries the response was YES. [2022-07-19 21:27:22,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2079 conditions, 706 events. 93/706 cut-off events. For 1769/1789 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3921 event pairs, 57 based on Foata normal form. 9/690 useless extension candidates. Maximal degree in co-relation 2028. Up to 207 conditions per place. [2022-07-19 21:27:22,268 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 48 selfloop transitions, 12 changer transitions 33/222 dead transitions. [2022-07-19 21:27:22,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 222 transitions, 1422 flow [2022-07-19 21:27:22,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:27:22,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:27:22,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2338 transitions. [2022-07-19 21:27:22,272 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7814171122994652 [2022-07-19 21:27:22,272 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2338 transitions. [2022-07-19 21:27:22,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2338 transitions. [2022-07-19 21:27:22,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:22,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2338 transitions. [2022-07-19 21:27:22,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.52941176470588) internal successors, (2338), 17 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:22,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:22,279 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:22,279 INFO L186 Difference]: Start difference. First operand has 250 places, 197 transitions, 1033 flow. Second operand 17 states and 2338 transitions. [2022-07-19 21:27:22,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 222 transitions, 1422 flow [2022-07-19 21:27:22,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 222 transitions, 1270 flow, removed 43 selfloop flow, removed 11 redundant places. [2022-07-19 21:27:22,291 INFO L242 Difference]: Finished difference. Result has 253 places, 188 transitions, 836 flow [2022-07-19 21:27:22,292 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=836, PETRI_PLACES=253, PETRI_TRANSITIONS=188} [2022-07-19 21:27:22,292 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 94 predicate places. [2022-07-19 21:27:22,292 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 188 transitions, 836 flow [2022-07-19 21:27:22,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:22,293 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:22,293 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] [2022-07-19 21:27:22,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 21:27:22,294 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:22,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:22,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1710327599, now seen corresponding path program 20 times [2022-07-19 21:27:22,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:22,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137365196] [2022-07-19 21:27:22,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:22,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:22,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:22,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:22,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137365196] [2022-07-19 21:27:22,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137365196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:22,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:22,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:22,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537666524] [2022-07-19 21:27:22,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:22,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:22,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:22,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:22,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:22,399 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:22,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 188 transitions, 836 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:22,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:22,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:22,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:22,679 INFO L129 PetriNetUnfolder]: 79/619 cut-off events. [2022-07-19 21:27:22,680 INFO L130 PetriNetUnfolder]: For 1178/1198 co-relation queries the response was YES. [2022-07-19 21:27:22,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1688 conditions, 619 events. 79/619 cut-off events. For 1178/1198 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3239 event pairs, 54 based on Foata normal form. 9/603 useless extension candidates. Maximal degree in co-relation 1637. Up to 187 conditions per place. [2022-07-19 21:27:22,685 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 34 selfloop transitions, 0 changer transitions 45/202 dead transitions. [2022-07-19 21:27:22,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 202 transitions, 1041 flow [2022-07-19 21:27:22,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:27:22,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:27:22,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2462 transitions. [2022-07-19 21:27:22,688 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7771464646464646 [2022-07-19 21:27:22,688 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2462 transitions. [2022-07-19 21:27:22,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2462 transitions. [2022-07-19 21:27:22,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:22,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2462 transitions. [2022-07-19 21:27:22,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.77777777777777) internal successors, (2462), 18 states have internal predecessors, (2462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:22,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:22,695 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:22,695 INFO L186 Difference]: Start difference. First operand has 253 places, 188 transitions, 836 flow. Second operand 18 states and 2462 transitions. [2022-07-19 21:27:22,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 202 transitions, 1041 flow [2022-07-19 21:27:22,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 202 transitions, 955 flow, removed 18 selfloop flow, removed 18 redundant places. [2022-07-19 21:27:22,704 INFO L242 Difference]: Finished difference. Result has 239 places, 157 transitions, 486 flow [2022-07-19 21:27:22,704 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=486, PETRI_PLACES=239, PETRI_TRANSITIONS=157} [2022-07-19 21:27:22,705 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 80 predicate places. [2022-07-19 21:27:22,705 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 157 transitions, 486 flow [2022-07-19 21:27:22,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:22,705 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:22,705 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] [2022-07-19 21:27:22,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 21:27:22,705 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:22,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:22,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1228416663, now seen corresponding path program 2 times [2022-07-19 21:27:22,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:22,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970045084] [2022-07-19 21:27:22,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:22,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:22,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:22,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:22,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970045084] [2022-07-19 21:27:22,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970045084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:22,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:22,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:22,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220988833] [2022-07-19 21:27:22,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:22,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:22,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:22,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:22,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:22,802 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:22,803 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 157 transitions, 486 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:22,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:22,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:22,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:23,069 INFO L129 PetriNetUnfolder]: 90/605 cut-off events. [2022-07-19 21:27:23,069 INFO L130 PetriNetUnfolder]: For 942/947 co-relation queries the response was YES. [2022-07-19 21:27:23,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1557 conditions, 605 events. 90/605 cut-off events. For 942/947 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2986 event pairs, 40 based on Foata normal form. 1/584 useless extension candidates. Maximal degree in co-relation 1514. Up to 142 conditions per place. [2022-07-19 21:27:23,075 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 52 selfloop transitions, 14 changer transitions 22/208 dead transitions. [2022-07-19 21:27:23,075 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 208 transitions, 1007 flow [2022-07-19 21:27:23,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:27:23,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:27:23,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2206 transitions. [2022-07-19 21:27:23,078 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7833806818181818 [2022-07-19 21:27:23,078 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2206 transitions. [2022-07-19 21:27:23,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2206 transitions. [2022-07-19 21:27:23,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:23,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2206 transitions. [2022-07-19 21:27:23,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.875) internal successors, (2206), 16 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,084 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,084 INFO L186 Difference]: Start difference. First operand has 239 places, 157 transitions, 486 flow. Second operand 16 states and 2206 transitions. [2022-07-19 21:27:23,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 208 transitions, 1007 flow [2022-07-19 21:27:23,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 208 transitions, 951 flow, removed 27 selfloop flow, removed 10 redundant places. [2022-07-19 21:27:23,092 INFO L242 Difference]: Finished difference. Result has 216 places, 169 transitions, 635 flow [2022-07-19 21:27:23,093 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=635, PETRI_PLACES=216, PETRI_TRANSITIONS=169} [2022-07-19 21:27:23,093 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 57 predicate places. [2022-07-19 21:27:23,093 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 169 transitions, 635 flow [2022-07-19 21:27:23,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,094 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:23,094 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] [2022-07-19 21:27:23,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 21:27:23,094 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:23,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:23,095 INFO L85 PathProgramCache]: Analyzing trace with hash 737561389, now seen corresponding path program 3 times [2022-07-19 21:27:23,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:23,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442930672] [2022-07-19 21:27:23,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:23,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:23,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:23,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:23,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442930672] [2022-07-19 21:27:23,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442930672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:23,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:23,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:23,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078585827] [2022-07-19 21:27:23,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:23,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:23,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:23,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:23,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:23,195 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:23,196 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 169 transitions, 635 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:23,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:23,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:23,500 INFO L129 PetriNetUnfolder]: 93/609 cut-off events. [2022-07-19 21:27:23,500 INFO L130 PetriNetUnfolder]: For 1439/1444 co-relation queries the response was YES. [2022-07-19 21:27:23,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1736 conditions, 609 events. 93/609 cut-off events. For 1439/1444 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3060 event pairs, 38 based on Foata normal form. 1/592 useless extension candidates. Maximal degree in co-relation 1688. Up to 151 conditions per place. [2022-07-19 21:27:23,506 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 56 selfloop transitions, 18 changer transitions 19/213 dead transitions. [2022-07-19 21:27:23,506 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 213 transitions, 1227 flow [2022-07-19 21:27:23,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:27:23,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:27:23,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2204 transitions. [2022-07-19 21:27:23,509 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7826704545454546 [2022-07-19 21:27:23,509 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2204 transitions. [2022-07-19 21:27:23,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2204 transitions. [2022-07-19 21:27:23,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:23,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2204 transitions. [2022-07-19 21:27:23,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.75) internal successors, (2204), 16 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,520 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,520 INFO L186 Difference]: Start difference. First operand has 216 places, 169 transitions, 635 flow. Second operand 16 states and 2204 transitions. [2022-07-19 21:27:23,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 213 transitions, 1227 flow [2022-07-19 21:27:23,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 213 transitions, 1099 flow, removed 63 selfloop flow, removed 7 redundant places. [2022-07-19 21:27:23,531 INFO L242 Difference]: Finished difference. Result has 228 places, 179 transitions, 754 flow [2022-07-19 21:27:23,532 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=754, PETRI_PLACES=228, PETRI_TRANSITIONS=179} [2022-07-19 21:27:23,536 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 69 predicate places. [2022-07-19 21:27:23,536 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 179 transitions, 754 flow [2022-07-19 21:27:23,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,537 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:23,537 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] [2022-07-19 21:27:23,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 21:27:23,539 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:23,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:23,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1951205417, now seen corresponding path program 4 times [2022-07-19 21:27:23,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:23,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754739824] [2022-07-19 21:27:23,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:23,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:23,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:23,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:23,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754739824] [2022-07-19 21:27:23,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754739824] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:23,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:23,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:23,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386551478] [2022-07-19 21:27:23,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:23,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:23,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:23,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:23,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:23,646 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:23,647 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 179 transitions, 754 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,647 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:23,647 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:23,647 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:24,007 INFO L129 PetriNetUnfolder]: 118/690 cut-off events. [2022-07-19 21:27:24,007 INFO L130 PetriNetUnfolder]: For 2042/2050 co-relation queries the response was YES. [2022-07-19 21:27:24,012 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2166 conditions, 690 events. 118/690 cut-off events. For 2042/2050 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3601 event pairs, 54 based on Foata normal form. 1/670 useless extension candidates. Maximal degree in co-relation 2113. Up to 151 conditions per place. [2022-07-19 21:27:24,014 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 70 selfloop transitions, 20 changer transitions 29/239 dead transitions. [2022-07-19 21:27:24,015 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 239 transitions, 1596 flow [2022-07-19 21:27:24,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:27:24,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:27:24,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2750 transitions. [2022-07-19 21:27:24,018 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.78125 [2022-07-19 21:27:24,018 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2750 transitions. [2022-07-19 21:27:24,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2750 transitions. [2022-07-19 21:27:24,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:24,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2750 transitions. [2022-07-19 21:27:24,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.5) internal successors, (2750), 20 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:24,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:24,025 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:24,025 INFO L186 Difference]: Start difference. First operand has 228 places, 179 transitions, 754 flow. Second operand 20 states and 2750 transitions. [2022-07-19 21:27:24,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 239 transitions, 1596 flow [2022-07-19 21:27:24,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 239 transitions, 1473 flow, removed 41 selfloop flow, removed 8 redundant places. [2022-07-19 21:27:24,037 INFO L242 Difference]: Finished difference. Result has 249 places, 190 transitions, 914 flow [2022-07-19 21:27:24,037 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=914, PETRI_PLACES=249, PETRI_TRANSITIONS=190} [2022-07-19 21:27:24,040 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 90 predicate places. [2022-07-19 21:27:24,040 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 190 transitions, 914 flow [2022-07-19 21:27:24,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:24,040 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:24,040 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] [2022-07-19 21:27:24,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 21:27:24,041 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:24,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:24,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1904803889, now seen corresponding path program 5 times [2022-07-19 21:27:24,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:24,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099235399] [2022-07-19 21:27:24,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:24,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:24,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:24,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:24,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099235399] [2022-07-19 21:27:24,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099235399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:24,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:24,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:24,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998385574] [2022-07-19 21:27:24,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:24,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:24,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:24,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:24,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:24,150 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:24,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 190 transitions, 914 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:24,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:24,151 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:24,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:24,540 INFO L129 PetriNetUnfolder]: 113/672 cut-off events. [2022-07-19 21:27:24,541 INFO L130 PetriNetUnfolder]: For 3092/3103 co-relation queries the response was YES. [2022-07-19 21:27:24,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2350 conditions, 672 events. 113/672 cut-off events. For 3092/3103 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3526 event pairs, 39 based on Foata normal form. 1/652 useless extension candidates. Maximal degree in co-relation 2286. Up to 113 conditions per place. [2022-07-19 21:27:24,548 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 94 selfloop transitions, 21 changer transitions 38/273 dead transitions. [2022-07-19 21:27:24,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 273 transitions, 2069 flow [2022-07-19 21:27:24,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:27:24,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:27:24,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3298 transitions. [2022-07-19 21:27:24,552 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7807765151515151 [2022-07-19 21:27:24,552 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3298 transitions. [2022-07-19 21:27:24,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3298 transitions. [2022-07-19 21:27:24,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:24,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3298 transitions. [2022-07-19 21:27:24,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 137.41666666666666) internal successors, (3298), 24 states have internal predecessors, (3298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:24,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:24,560 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:24,560 INFO L186 Difference]: Start difference. First operand has 249 places, 190 transitions, 914 flow. Second operand 24 states and 3298 transitions. [2022-07-19 21:27:24,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 273 transitions, 2069 flow [2022-07-19 21:27:24,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 273 transitions, 1907 flow, removed 74 selfloop flow, removed 10 redundant places. [2022-07-19 21:27:24,578 INFO L242 Difference]: Finished difference. Result has 269 places, 192 transitions, 1002 flow [2022-07-19 21:27:24,578 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1002, PETRI_PLACES=269, PETRI_TRANSITIONS=192} [2022-07-19 21:27:24,579 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 110 predicate places. [2022-07-19 21:27:24,579 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 192 transitions, 1002 flow [2022-07-19 21:27:24,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:24,579 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:24,579 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] [2022-07-19 21:27:24,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 21:27:24,580 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:24,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:24,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1901576121, now seen corresponding path program 6 times [2022-07-19 21:27:24,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:24,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886785397] [2022-07-19 21:27:24,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:24,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:24,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:24,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:24,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886785397] [2022-07-19 21:27:24,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886785397] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:24,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:24,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:24,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69359625] [2022-07-19 21:27:24,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:24,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:24,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:24,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:24,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:24,692 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:24,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 192 transitions, 1002 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:24,692 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:24,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:24,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:25,067 INFO L129 PetriNetUnfolder]: 122/739 cut-off events. [2022-07-19 21:27:25,068 INFO L130 PetriNetUnfolder]: For 3969/3978 co-relation queries the response was YES. [2022-07-19 21:27:25,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 739 events. 122/739 cut-off events. For 3969/3978 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4115 event pairs, 44 based on Foata normal form. 3/722 useless extension candidates. Maximal degree in co-relation 2612. Up to 167 conditions per place. [2022-07-19 21:27:25,077 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 71 selfloop transitions, 22 changer transitions 29/242 dead transitions. [2022-07-19 21:27:25,077 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 242 transitions, 1877 flow [2022-07-19 21:27:25,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:27:25,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:27:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3015 transitions. [2022-07-19 21:27:25,081 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7786673553719008 [2022-07-19 21:27:25,081 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3015 transitions. [2022-07-19 21:27:25,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3015 transitions. [2022-07-19 21:27:25,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:25,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3015 transitions. [2022-07-19 21:27:25,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.04545454545453) internal successors, (3015), 22 states have internal predecessors, (3015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,088 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,088 INFO L186 Difference]: Start difference. First operand has 269 places, 192 transitions, 1002 flow. Second operand 22 states and 3015 transitions. [2022-07-19 21:27:25,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 242 transitions, 1877 flow [2022-07-19 21:27:25,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 242 transitions, 1750 flow, removed 38 selfloop flow, removed 18 redundant places. [2022-07-19 21:27:25,107 INFO L242 Difference]: Finished difference. Result has 270 places, 195 transitions, 1074 flow [2022-07-19 21:27:25,108 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1074, PETRI_PLACES=270, PETRI_TRANSITIONS=195} [2022-07-19 21:27:25,109 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 111 predicate places. [2022-07-19 21:27:25,109 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 195 transitions, 1074 flow [2022-07-19 21:27:25,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,109 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:25,110 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] [2022-07-19 21:27:25,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 21:27:25,110 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:25,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:25,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1112985117, now seen corresponding path program 7 times [2022-07-19 21:27:25,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:25,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028822587] [2022-07-19 21:27:25,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:25,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:25,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:25,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:25,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028822587] [2022-07-19 21:27:25,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028822587] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:25,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:25,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:25,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058174773] [2022-07-19 21:27:25,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:25,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:25,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:25,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:25,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:25,218 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:25,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 195 transitions, 1074 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:25,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:25,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:25,570 INFO L129 PetriNetUnfolder]: 117/715 cut-off events. [2022-07-19 21:27:25,570 INFO L130 PetriNetUnfolder]: For 4829/4840 co-relation queries the response was YES. [2022-07-19 21:27:25,575 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2738 conditions, 715 events. 117/715 cut-off events. For 4829/4840 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3945 event pairs, 39 based on Foata normal form. 2/697 useless extension candidates. Maximal degree in co-relation 2664. Up to 163 conditions per place. [2022-07-19 21:27:25,578 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 83 selfloop transitions, 21 changer transitions 29/253 dead transitions. [2022-07-19 21:27:25,578 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 253 transitions, 2256 flow [2022-07-19 21:27:25,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:27:25,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:27:25,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2887 transitions. [2022-07-19 21:27:25,582 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7811147186147186 [2022-07-19 21:27:25,582 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2887 transitions. [2022-07-19 21:27:25,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2887 transitions. [2022-07-19 21:27:25,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:25,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2887 transitions. [2022-07-19 21:27:25,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.47619047619048) internal successors, (2887), 21 states have internal predecessors, (2887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,589 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,589 INFO L186 Difference]: Start difference. First operand has 270 places, 195 transitions, 1074 flow. Second operand 21 states and 2887 transitions. [2022-07-19 21:27:25,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 253 transitions, 2256 flow [2022-07-19 21:27:25,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 253 transitions, 2065 flow, removed 82 selfloop flow, removed 13 redundant places. [2022-07-19 21:27:25,610 INFO L242 Difference]: Finished difference. Result has 279 places, 205 transitions, 1294 flow [2022-07-19 21:27:25,610 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1294, PETRI_PLACES=279, PETRI_TRANSITIONS=205} [2022-07-19 21:27:25,611 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 120 predicate places. [2022-07-19 21:27:25,612 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 205 transitions, 1294 flow [2022-07-19 21:27:25,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,612 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:25,612 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] [2022-07-19 21:27:25,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-19 21:27:25,612 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:25,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:25,613 INFO L85 PathProgramCache]: Analyzing trace with hash 181054911, now seen corresponding path program 8 times [2022-07-19 21:27:25,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:25,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864068037] [2022-07-19 21:27:25,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:25,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:25,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:25,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:25,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864068037] [2022-07-19 21:27:25,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864068037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:25,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:25,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:25,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735939961] [2022-07-19 21:27:25,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:25,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:25,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:25,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:25,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:25,719 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:25,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 205 transitions, 1294 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:25,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:25,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:26,050 INFO L129 PetriNetUnfolder]: 107/708 cut-off events. [2022-07-19 21:27:26,050 INFO L130 PetriNetUnfolder]: For 5276/5293 co-relation queries the response was YES. [2022-07-19 21:27:26,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2730 conditions, 708 events. 107/708 cut-off events. For 5276/5293 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3908 event pairs, 40 based on Foata normal form. 4/690 useless extension candidates. Maximal degree in co-relation 2651. Up to 172 conditions per place. [2022-07-19 21:27:26,059 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 77 selfloop transitions, 27 changer transitions 30/254 dead transitions. [2022-07-19 21:27:26,059 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 254 transitions, 2377 flow [2022-07-19 21:27:26,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:27:26,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:27:26,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2747 transitions. [2022-07-19 21:27:26,063 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7803977272727273 [2022-07-19 21:27:26,063 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2747 transitions. [2022-07-19 21:27:26,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2747 transitions. [2022-07-19 21:27:26,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:26,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2747 transitions. [2022-07-19 21:27:26,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.35) internal successors, (2747), 20 states have internal predecessors, (2747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:26,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:26,070 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:26,070 INFO L186 Difference]: Start difference. First operand has 279 places, 205 transitions, 1294 flow. Second operand 20 states and 2747 transitions. [2022-07-19 21:27:26,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 254 transitions, 2377 flow [2022-07-19 21:27:26,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 254 transitions, 2140 flow, removed 110 selfloop flow, removed 12 redundant places. [2022-07-19 21:27:26,096 INFO L242 Difference]: Finished difference. Result has 288 places, 213 transitions, 1448 flow [2022-07-19 21:27:26,096 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1448, PETRI_PLACES=288, PETRI_TRANSITIONS=213} [2022-07-19 21:27:26,097 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 129 predicate places. [2022-07-19 21:27:26,097 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 213 transitions, 1448 flow [2022-07-19 21:27:26,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:26,097 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:26,097 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] [2022-07-19 21:27:26,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-19 21:27:26,098 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:26,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:26,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1414141161, now seen corresponding path program 9 times [2022-07-19 21:27:26,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:26,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149693957] [2022-07-19 21:27:26,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:26,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:26,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:26,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:26,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149693957] [2022-07-19 21:27:26,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149693957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:26,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:26,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:26,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555063007] [2022-07-19 21:27:26,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:26,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:26,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:26,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:26,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:26,202 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:26,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 213 transitions, 1448 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:26,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:26,203 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:26,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:26,506 INFO L129 PetriNetUnfolder]: 94/653 cut-off events. [2022-07-19 21:27:26,506 INFO L130 PetriNetUnfolder]: For 4246/4255 co-relation queries the response was YES. [2022-07-19 21:27:26,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2433 conditions, 653 events. 94/653 cut-off events. For 4246/4255 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3428 event pairs, 33 based on Foata normal form. 3/636 useless extension candidates. Maximal degree in co-relation 2350. Up to 158 conditions per place. [2022-07-19 21:27:26,514 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 72 selfloop transitions, 18 changer transitions 30/240 dead transitions. [2022-07-19 21:27:26,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 240 transitions, 2074 flow [2022-07-19 21:27:26,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:27:26,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:27:26,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2467 transitions. [2022-07-19 21:27:26,517 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7787247474747475 [2022-07-19 21:27:26,517 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2467 transitions. [2022-07-19 21:27:26,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2467 transitions. [2022-07-19 21:27:26,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:26,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2467 transitions. [2022-07-19 21:27:26,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.05555555555554) internal successors, (2467), 18 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:26,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:26,523 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:26,524 INFO L186 Difference]: Start difference. First operand has 288 places, 213 transitions, 1448 flow. Second operand 18 states and 2467 transitions. [2022-07-19 21:27:26,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 240 transitions, 2074 flow [2022-07-19 21:27:26,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 240 transitions, 1884 flow, removed 70 selfloop flow, removed 16 redundant places. [2022-07-19 21:27:26,548 INFO L242 Difference]: Finished difference. Result has 284 places, 198 transitions, 1165 flow [2022-07-19 21:27:26,549 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1165, PETRI_PLACES=284, PETRI_TRANSITIONS=198} [2022-07-19 21:27:26,549 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 125 predicate places. [2022-07-19 21:27:26,549 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 198 transitions, 1165 flow [2022-07-19 21:27:26,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:26,550 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:26,550 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] [2022-07-19 21:27:26,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-19 21:27:26,550 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:26,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:26,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1457045623, now seen corresponding path program 10 times [2022-07-19 21:27:26,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:26,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976638087] [2022-07-19 21:27:26,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:26,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:26,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:26,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:26,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976638087] [2022-07-19 21:27:26,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976638087] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:26,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:26,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:26,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673254570] [2022-07-19 21:27:26,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:26,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:26,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:26,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:26,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:26,644 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:26,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 198 transitions, 1165 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:26,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:26,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:26,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:26,951 INFO L129 PetriNetUnfolder]: 99/670 cut-off events. [2022-07-19 21:27:26,951 INFO L130 PetriNetUnfolder]: For 3956/3971 co-relation queries the response was YES. [2022-07-19 21:27:26,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2443 conditions, 670 events. 99/670 cut-off events. For 3956/3971 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3565 event pairs, 36 based on Foata normal form. 3/652 useless extension candidates. Maximal degree in co-relation 2367. Up to 160 conditions per place. [2022-07-19 21:27:26,959 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 71 selfloop transitions, 24 changer transitions 24/239 dead transitions. [2022-07-19 21:27:26,960 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 239 transitions, 1992 flow [2022-07-19 21:27:26,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:27:26,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:27:26,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2343 transitions. [2022-07-19 21:27:26,962 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7830882352941176 [2022-07-19 21:27:26,962 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2343 transitions. [2022-07-19 21:27:26,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2343 transitions. [2022-07-19 21:27:26,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:26,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2343 transitions. [2022-07-19 21:27:26,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.8235294117647) internal successors, (2343), 17 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:26,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:26,968 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:26,968 INFO L186 Difference]: Start difference. First operand has 284 places, 198 transitions, 1165 flow. Second operand 17 states and 2343 transitions. [2022-07-19 21:27:26,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 239 transitions, 1992 flow [2022-07-19 21:27:26,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 239 transitions, 1827 flow, removed 32 selfloop flow, removed 15 redundant places. [2022-07-19 21:27:26,989 INFO L242 Difference]: Finished difference. Result has 272 places, 206 transitions, 1296 flow [2022-07-19 21:27:26,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1296, PETRI_PLACES=272, PETRI_TRANSITIONS=206} [2022-07-19 21:27:26,990 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 113 predicate places. [2022-07-19 21:27:26,991 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 206 transitions, 1296 flow [2022-07-19 21:27:26,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:26,991 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:26,992 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] [2022-07-19 21:27:26,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-19 21:27:26,992 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:26,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:26,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1870034335, now seen corresponding path program 11 times [2022-07-19 21:27:26,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:26,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559829689] [2022-07-19 21:27:26,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:26,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:27,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:27,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:27,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559829689] [2022-07-19 21:27:27,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559829689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:27,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:27,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:27,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129924019] [2022-07-19 21:27:27,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:27,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:27,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:27,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:27,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:27,094 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:27,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 206 transitions, 1296 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:27,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:27,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:27,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:27,358 INFO L129 PetriNetUnfolder]: 96/674 cut-off events. [2022-07-19 21:27:27,358 INFO L130 PetriNetUnfolder]: For 3491/3498 co-relation queries the response was YES. [2022-07-19 21:27:27,363 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2411 conditions, 674 events. 96/674 cut-off events. For 3491/3498 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3594 event pairs, 39 based on Foata normal form. 1/654 useless extension candidates. Maximal degree in co-relation 2335. Up to 162 conditions per place. [2022-07-19 21:27:27,365 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 72 selfloop transitions, 27 changer transitions 24/243 dead transitions. [2022-07-19 21:27:27,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 243 transitions, 2090 flow [2022-07-19 21:27:27,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:27:27,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:27:27,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2341 transitions. [2022-07-19 21:27:27,368 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7824197860962567 [2022-07-19 21:27:27,368 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2341 transitions. [2022-07-19 21:27:27,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2341 transitions. [2022-07-19 21:27:27,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:27,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2341 transitions. [2022-07-19 21:27:27,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.7058823529412) internal successors, (2341), 17 states have internal predecessors, (2341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:27,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:27,373 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:27,373 INFO L186 Difference]: Start difference. First operand has 272 places, 206 transitions, 1296 flow. Second operand 17 states and 2341 transitions. [2022-07-19 21:27:27,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 243 transitions, 2090 flow [2022-07-19 21:27:27,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 243 transitions, 1968 flow, removed 35 selfloop flow, removed 10 redundant places. [2022-07-19 21:27:27,395 INFO L242 Difference]: Finished difference. Result has 280 places, 214 transitions, 1451 flow [2022-07-19 21:27:27,396 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1451, PETRI_PLACES=280, PETRI_TRANSITIONS=214} [2022-07-19 21:27:27,396 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 121 predicate places. [2022-07-19 21:27:27,397 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 214 transitions, 1451 flow [2022-07-19 21:27:27,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:27,397 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:27,397 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] [2022-07-19 21:27:27,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-19 21:27:27,398 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:27,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:27,398 INFO L85 PathProgramCache]: Analyzing trace with hash -264747361, now seen corresponding path program 12 times [2022-07-19 21:27:27,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:27,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586623633] [2022-07-19 21:27:27,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:27,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:27,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:27,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586623633] [2022-07-19 21:27:27,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586623633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:27,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:27,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:27,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337504819] [2022-07-19 21:27:27,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:27,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:27,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:27,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:27,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:27,491 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:27,492 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 214 transitions, 1451 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:27,492 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:27,492 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:27,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:27,778 INFO L129 PetriNetUnfolder]: 88/645 cut-off events. [2022-07-19 21:27:27,778 INFO L130 PetriNetUnfolder]: For 2921/2928 co-relation queries the response was YES. [2022-07-19 21:27:27,784 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2215 conditions, 645 events. 88/645 cut-off events. For 2921/2928 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3371 event pairs, 37 based on Foata normal form. 1/627 useless extension candidates. Maximal degree in co-relation 2136. Up to 154 conditions per place. [2022-07-19 21:27:27,786 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 69 selfloop transitions, 16 changer transitions 30/235 dead transitions. [2022-07-19 21:27:27,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 235 transitions, 1916 flow [2022-07-19 21:27:27,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:27:27,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:27:27,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2472 transitions. [2022-07-19 21:27:27,789 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7803030303030303 [2022-07-19 21:27:27,789 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2472 transitions. [2022-07-19 21:27:27,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2472 transitions. [2022-07-19 21:27:27,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:27,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2472 transitions. [2022-07-19 21:27:27,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.33333333333334) internal successors, (2472), 18 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:27,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:27,795 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:27,795 INFO L186 Difference]: Start difference. First operand has 280 places, 214 transitions, 1451 flow. Second operand 18 states and 2472 transitions. [2022-07-19 21:27:27,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 235 transitions, 1916 flow [2022-07-19 21:27:27,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 235 transitions, 1809 flow, removed 38 selfloop flow, removed 8 redundant places. [2022-07-19 21:27:27,818 INFO L242 Difference]: Finished difference. Result has 286 places, 200 transitions, 1180 flow [2022-07-19 21:27:27,818 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1356, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1180, PETRI_PLACES=286, PETRI_TRANSITIONS=200} [2022-07-19 21:27:27,819 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 127 predicate places. [2022-07-19 21:27:27,819 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 200 transitions, 1180 flow [2022-07-19 21:27:27,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:27,820 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:27,820 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] [2022-07-19 21:27:27,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-19 21:27:27,820 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:27,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:27,823 INFO L85 PathProgramCache]: Analyzing trace with hash -873208415, now seen corresponding path program 13 times [2022-07-19 21:27:27,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:27,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787299781] [2022-07-19 21:27:27,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:27,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:27,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:27,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:27,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787299781] [2022-07-19 21:27:27,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787299781] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:27,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:27,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:27,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078987430] [2022-07-19 21:27:27,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:27,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:27,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:27,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:27,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:27,924 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:27,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 200 transitions, 1180 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:27,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:27,925 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:27,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:28,201 INFO L129 PetriNetUnfolder]: 75/576 cut-off events. [2022-07-19 21:27:28,201 INFO L130 PetriNetUnfolder]: For 2388/2403 co-relation queries the response was YES. [2022-07-19 21:27:28,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 576 events. 75/576 cut-off events. For 2388/2403 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2778 event pairs, 33 based on Foata normal form. 3/560 useless extension candidates. Maximal degree in co-relation 1783. Up to 145 conditions per place. [2022-07-19 21:27:28,207 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 59 selfloop transitions, 5 changer transitions 29/213 dead transitions. [2022-07-19 21:27:28,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 213 transitions, 1501 flow [2022-07-19 21:27:28,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:27:28,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:27:28,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2461 transitions. [2022-07-19 21:27:28,210 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7768308080808081 [2022-07-19 21:27:28,210 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2461 transitions. [2022-07-19 21:27:28,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2461 transitions. [2022-07-19 21:27:28,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:28,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2461 transitions. [2022-07-19 21:27:28,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.72222222222223) internal successors, (2461), 18 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:28,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:28,216 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:28,216 INFO L186 Difference]: Start difference. First operand has 286 places, 200 transitions, 1180 flow. Second operand 18 states and 2461 transitions. [2022-07-19 21:27:28,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 213 transitions, 1501 flow [2022-07-19 21:27:28,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 213 transitions, 1382 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-07-19 21:27:28,234 INFO L242 Difference]: Finished difference. Result has 273 places, 180 transitions, 842 flow [2022-07-19 21:27:28,234 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=842, PETRI_PLACES=273, PETRI_TRANSITIONS=180} [2022-07-19 21:27:28,234 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 114 predicate places. [2022-07-19 21:27:28,234 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 180 transitions, 842 flow [2022-07-19 21:27:28,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:28,235 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:28,235 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] [2022-07-19 21:27:28,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-19 21:27:28,235 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:28,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:28,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1784959983, now seen corresponding path program 14 times [2022-07-19 21:27:28,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:28,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177884726] [2022-07-19 21:27:28,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:28,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:28,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:28,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177884726] [2022-07-19 21:27:28,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177884726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:28,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:28,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:28,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232583603] [2022-07-19 21:27:28,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:28,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:28,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:28,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:28,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:28,331 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:28,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 180 transitions, 842 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:28,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:28,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:28,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:28,649 INFO L129 PetriNetUnfolder]: 77/619 cut-off events. [2022-07-19 21:27:28,649 INFO L130 PetriNetUnfolder]: For 1864/1869 co-relation queries the response was YES. [2022-07-19 21:27:28,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1848 conditions, 619 events. 77/619 cut-off events. For 1864/1869 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3184 event pairs, 33 based on Foata normal form. 1/602 useless extension candidates. Maximal degree in co-relation 1776. Up to 126 conditions per place. [2022-07-19 21:27:28,656 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 54 selfloop transitions, 21 changer transitions 30/225 dead transitions. [2022-07-19 21:27:28,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 225 transitions, 1555 flow [2022-07-19 21:27:28,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:27:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:27:28,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3011 transitions. [2022-07-19 21:27:28,660 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7776342975206612 [2022-07-19 21:27:28,660 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3011 transitions. [2022-07-19 21:27:28,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3011 transitions. [2022-07-19 21:27:28,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:28,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3011 transitions. [2022-07-19 21:27:28,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 136.86363636363637) internal successors, (3011), 22 states have internal predecessors, (3011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:28,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:28,668 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:28,668 INFO L186 Difference]: Start difference. First operand has 273 places, 180 transitions, 842 flow. Second operand 22 states and 3011 transitions. [2022-07-19 21:27:28,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 225 transitions, 1555 flow [2022-07-19 21:27:28,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 225 transitions, 1406 flow, removed 30 selfloop flow, removed 21 redundant places. [2022-07-19 21:27:28,682 INFO L242 Difference]: Finished difference. Result has 259 places, 185 transitions, 914 flow [2022-07-19 21:27:28,683 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=914, PETRI_PLACES=259, PETRI_TRANSITIONS=185} [2022-07-19 21:27:28,683 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 100 predicate places. [2022-07-19 21:27:28,684 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 185 transitions, 914 flow [2022-07-19 21:27:28,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:28,684 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:28,684 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] [2022-07-19 21:27:28,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-19 21:27:28,685 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:28,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:28,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1090332437, now seen corresponding path program 15 times [2022-07-19 21:27:28,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:28,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828748433] [2022-07-19 21:27:28,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:28,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:28,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:28,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828748433] [2022-07-19 21:27:28,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828748433] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:28,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:28,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:28,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021935344] [2022-07-19 21:27:28,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:28,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:28,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:28,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:28,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:28,796 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:28,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 185 transitions, 914 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:28,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:28,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:28,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:29,081 INFO L129 PetriNetUnfolder]: 78/612 cut-off events. [2022-07-19 21:27:29,082 INFO L130 PetriNetUnfolder]: For 1916/1921 co-relation queries the response was YES. [2022-07-19 21:27:29,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1886 conditions, 612 events. 78/612 cut-off events. For 1916/1921 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3133 event pairs, 32 based on Foata normal form. 1/595 useless extension candidates. Maximal degree in co-relation 1817. Up to 133 conditions per place. [2022-07-19 21:27:29,088 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 55 selfloop transitions, 27 changer transitions 23/225 dead transitions. [2022-07-19 21:27:29,088 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 225 transitions, 1600 flow [2022-07-19 21:27:29,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:27:29,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:27:29,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2336 transitions. [2022-07-19 21:27:29,091 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7807486631016043 [2022-07-19 21:27:29,091 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2336 transitions. [2022-07-19 21:27:29,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2336 transitions. [2022-07-19 21:27:29,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:29,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2336 transitions. [2022-07-19 21:27:29,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.41176470588235) internal successors, (2336), 17 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:29,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:29,115 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:29,115 INFO L186 Difference]: Start difference. First operand has 259 places, 185 transitions, 914 flow. Second operand 17 states and 2336 transitions. [2022-07-19 21:27:29,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 225 transitions, 1600 flow [2022-07-19 21:27:29,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 225 transitions, 1514 flow, removed 30 selfloop flow, removed 13 redundant places. [2022-07-19 21:27:29,128 INFO L242 Difference]: Finished difference. Result has 258 places, 193 transitions, 1069 flow [2022-07-19 21:27:29,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1069, PETRI_PLACES=258, PETRI_TRANSITIONS=193} [2022-07-19 21:27:29,129 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 99 predicate places. [2022-07-19 21:27:29,129 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 193 transitions, 1069 flow [2022-07-19 21:27:29,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:29,129 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:29,129 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:29,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-19 21:27:29,130 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:29,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:29,130 INFO L85 PathProgramCache]: Analyzing trace with hash -2132873829, now seen corresponding path program 16 times [2022-07-19 21:27:29,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:29,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621271378] [2022-07-19 21:27:29,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:29,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:29,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:29,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:29,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621271378] [2022-07-19 21:27:29,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621271378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:29,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:29,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:29,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410512353] [2022-07-19 21:27:29,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:29,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:29,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:29,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:29,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:29,232 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:29,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 193 transitions, 1069 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:29,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:29,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:29,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:29,489 INFO L129 PetriNetUnfolder]: 68/574 cut-off events. [2022-07-19 21:27:29,490 INFO L130 PetriNetUnfolder]: For 1750/1755 co-relation queries the response was YES. [2022-07-19 21:27:29,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 574 events. 68/574 cut-off events. For 1750/1755 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2811 event pairs, 33 based on Foata normal form. 1/557 useless extension candidates. Maximal degree in co-relation 1684. Up to 127 conditions per place. [2022-07-19 21:27:29,495 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 52 selfloop transitions, 12 changer transitions 29/213 dead transitions. [2022-07-19 21:27:29,496 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 213 transitions, 1447 flow [2022-07-19 21:27:29,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:27:29,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:27:29,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2465 transitions. [2022-07-19 21:27:29,499 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7780934343434344 [2022-07-19 21:27:29,499 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2465 transitions. [2022-07-19 21:27:29,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2465 transitions. [2022-07-19 21:27:29,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:29,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2465 transitions. [2022-07-19 21:27:29,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.94444444444446) internal successors, (2465), 18 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:29,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:29,505 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:29,505 INFO L186 Difference]: Start difference. First operand has 258 places, 193 transitions, 1069 flow. Second operand 18 states and 2465 transitions. [2022-07-19 21:27:29,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 213 transitions, 1447 flow [2022-07-19 21:27:29,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 213 transitions, 1347 flow, removed 28 selfloop flow, removed 9 redundant places. [2022-07-19 21:27:29,520 INFO L242 Difference]: Finished difference. Result has 265 places, 178 transitions, 821 flow [2022-07-19 21:27:29,520 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=821, PETRI_PLACES=265, PETRI_TRANSITIONS=178} [2022-07-19 21:27:29,520 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 106 predicate places. [2022-07-19 21:27:29,521 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 178 transitions, 821 flow [2022-07-19 21:27:29,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:29,521 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:29,521 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] [2022-07-19 21:27:29,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-19 21:27:29,522 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:29,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:29,522 INFO L85 PathProgramCache]: Analyzing trace with hash 919394503, now seen corresponding path program 17 times [2022-07-19 21:27:29,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:29,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130008482] [2022-07-19 21:27:29,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:29,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:29,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:29,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:29,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130008482] [2022-07-19 21:27:29,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130008482] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:29,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:29,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:29,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220137207] [2022-07-19 21:27:29,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:29,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:29,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:29,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:29,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:29,633 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:29,634 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 178 transitions, 821 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:29,634 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:29,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:29,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:29,957 INFO L129 PetriNetUnfolder]: 67/553 cut-off events. [2022-07-19 21:27:29,957 INFO L130 PetriNetUnfolder]: For 1743/1748 co-relation queries the response was YES. [2022-07-19 21:27:29,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1694 conditions, 553 events. 67/553 cut-off events. For 1743/1748 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2619 event pairs, 32 based on Foata normal form. 1/535 useless extension candidates. Maximal degree in co-relation 1625. Up to 117 conditions per place. [2022-07-19 21:27:29,962 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 48 selfloop transitions, 19 changer transitions 30/217 dead transitions. [2022-07-19 21:27:29,962 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 217 transitions, 1526 flow [2022-07-19 21:27:29,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:27:29,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:27:29,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2875 transitions. [2022-07-19 21:27:29,965 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7778679653679653 [2022-07-19 21:27:29,965 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2875 transitions. [2022-07-19 21:27:29,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2875 transitions. [2022-07-19 21:27:29,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:29,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2875 transitions. [2022-07-19 21:27:29,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 136.9047619047619) internal successors, (2875), 21 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:29,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:29,973 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:29,973 INFO L186 Difference]: Start difference. First operand has 265 places, 178 transitions, 821 flow. Second operand 21 states and 2875 transitions. [2022-07-19 21:27:29,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 217 transitions, 1526 flow [2022-07-19 21:27:29,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 217 transitions, 1360 flow, removed 39 selfloop flow, removed 18 redundant places. [2022-07-19 21:27:29,986 INFO L242 Difference]: Finished difference. Result has 258 places, 182 transitions, 903 flow [2022-07-19 21:27:29,986 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=903, PETRI_PLACES=258, PETRI_TRANSITIONS=182} [2022-07-19 21:27:29,987 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 99 predicate places. [2022-07-19 21:27:29,987 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 182 transitions, 903 flow [2022-07-19 21:27:29,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:29,987 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:29,987 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:29,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-19 21:27:29,988 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:29,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:29,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1815134357, now seen corresponding path program 18 times [2022-07-19 21:27:29,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:29,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067332550] [2022-07-19 21:27:29,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:29,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:30,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:30,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:30,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067332550] [2022-07-19 21:27:30,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067332550] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:30,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:30,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:30,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623027248] [2022-07-19 21:27:30,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:30,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:30,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:30,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:30,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:30,099 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:30,100 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 182 transitions, 903 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:30,100 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:30,100 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:30,100 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:30,398 INFO L129 PetriNetUnfolder]: 62/537 cut-off events. [2022-07-19 21:27:30,398 INFO L130 PetriNetUnfolder]: For 1725/1730 co-relation queries the response was YES. [2022-07-19 21:27:30,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1627 conditions, 537 events. 62/537 cut-off events. For 1725/1730 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2485 event pairs, 32 based on Foata normal form. 1/519 useless extension candidates. Maximal degree in co-relation 1557. Up to 122 conditions per place. [2022-07-19 21:27:30,404 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 44 selfloop transitions, 21 changer transitions 26/211 dead transitions. [2022-07-19 21:27:30,404 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 211 transitions, 1453 flow [2022-07-19 21:27:30,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:27:30,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:27:30,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2470 transitions. [2022-07-19 21:27:30,407 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7796717171717171 [2022-07-19 21:27:30,407 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2470 transitions. [2022-07-19 21:27:30,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2470 transitions. [2022-07-19 21:27:30,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:30,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2470 transitions. [2022-07-19 21:27:30,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.22222222222223) internal successors, (2470), 18 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:30,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:30,415 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:30,416 INFO L186 Difference]: Start difference. First operand has 258 places, 182 transitions, 903 flow. Second operand 18 states and 2470 transitions. [2022-07-19 21:27:30,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 211 transitions, 1453 flow [2022-07-19 21:27:30,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 211 transitions, 1338 flow, removed 43 selfloop flow, removed 14 redundant places. [2022-07-19 21:27:30,431 INFO L242 Difference]: Finished difference. Result has 253 places, 183 transitions, 928 flow [2022-07-19 21:27:30,432 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=928, PETRI_PLACES=253, PETRI_TRANSITIONS=183} [2022-07-19 21:27:30,433 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 94 predicate places. [2022-07-19 21:27:30,433 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 183 transitions, 928 flow [2022-07-19 21:27:30,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:30,434 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:30,434 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] [2022-07-19 21:27:30,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-19 21:27:30,434 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:30,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:30,435 INFO L85 PathProgramCache]: Analyzing trace with hash 168894361, now seen corresponding path program 19 times [2022-07-19 21:27:30,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:30,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258415781] [2022-07-19 21:27:30,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:30,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:30,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:30,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258415781] [2022-07-19 21:27:30,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258415781] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:30,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:30,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:30,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779916523] [2022-07-19 21:27:30,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:30,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:30,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:30,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:30,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:30,534 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:30,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 183 transitions, 928 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:30,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:30,535 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:30,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:30,776 INFO L129 PetriNetUnfolder]: 60/534 cut-off events. [2022-07-19 21:27:30,776 INFO L130 PetriNetUnfolder]: For 1345/1350 co-relation queries the response was YES. [2022-07-19 21:27:30,779 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1531 conditions, 534 events. 60/534 cut-off events. For 1345/1350 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2494 event pairs, 35 based on Foata normal form. 1/516 useless extension candidates. Maximal degree in co-relation 1467. Up to 121 conditions per place. [2022-07-19 21:27:30,780 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 42 selfloop transitions, 13 changer transitions 28/203 dead transitions. [2022-07-19 21:27:30,780 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 203 transitions, 1275 flow [2022-07-19 21:27:30,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:27:30,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:27:30,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2467 transitions. [2022-07-19 21:27:30,782 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7787247474747475 [2022-07-19 21:27:30,782 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2467 transitions. [2022-07-19 21:27:30,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2467 transitions. [2022-07-19 21:27:30,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:30,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2467 transitions. [2022-07-19 21:27:30,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.05555555555554) internal successors, (2467), 18 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:30,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:30,788 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:30,788 INFO L186 Difference]: Start difference. First operand has 253 places, 183 transitions, 928 flow. Second operand 18 states and 2467 transitions. [2022-07-19 21:27:30,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 203 transitions, 1275 flow [2022-07-19 21:27:30,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 203 transitions, 1138 flow, removed 37 selfloop flow, removed 14 redundant places. [2022-07-19 21:27:30,800 INFO L242 Difference]: Finished difference. Result has 255 places, 174 transitions, 754 flow [2022-07-19 21:27:30,801 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=754, PETRI_PLACES=255, PETRI_TRANSITIONS=174} [2022-07-19 21:27:30,801 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 96 predicate places. [2022-07-19 21:27:30,801 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 174 transitions, 754 flow [2022-07-19 21:27:30,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:30,802 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:30,802 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] [2022-07-19 21:27:30,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-19 21:27:30,802 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:30,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:30,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1082336479, now seen corresponding path program 20 times [2022-07-19 21:27:30,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:30,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530184762] [2022-07-19 21:27:30,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:30,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:30,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:30,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:30,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530184762] [2022-07-19 21:27:30,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530184762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:30,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:30,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:30,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807079177] [2022-07-19 21:27:30,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:30,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:30,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:30,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:30,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:30,906 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-19 21:27:30,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 174 transitions, 754 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:30,907 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:30,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-19 21:27:30,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:31,114 INFO L129 PetriNetUnfolder]: 48/440 cut-off events. [2022-07-19 21:27:31,114 INFO L130 PetriNetUnfolder]: For 836/841 co-relation queries the response was YES. [2022-07-19 21:27:31,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1152 conditions, 440 events. 48/440 cut-off events. For 836/841 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1801 event pairs, 29 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 1090. Up to 100 conditions per place. [2022-07-19 21:27:31,118 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 29 selfloop transitions, 0 changer transitions 40/183 dead transitions. [2022-07-19 21:27:31,118 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 183 transitions, 918 flow [2022-07-19 21:27:31,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:27:31,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:27:31,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2322 transitions. [2022-07-19 21:27:31,120 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7760695187165776 [2022-07-19 21:27:31,120 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2322 transitions. [2022-07-19 21:27:31,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2322 transitions. [2022-07-19 21:27:31,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:31,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2322 transitions. [2022-07-19 21:27:31,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 136.58823529411765) internal successors, (2322), 17 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:31,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:31,126 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:31,126 INFO L186 Difference]: Start difference. First operand has 255 places, 174 transitions, 754 flow. Second operand 17 states and 2322 transitions. [2022-07-19 21:27:31,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 183 transitions, 918 flow [2022-07-19 21:27:31,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 183 transitions, 828 flow, removed 21 selfloop flow, removed 19 redundant places. [2022-07-19 21:27:31,135 INFO L242 Difference]: Finished difference. Result has 238 places, 143 transitions, 394 flow [2022-07-19 21:27:31,135 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=394, PETRI_PLACES=238, PETRI_TRANSITIONS=143} [2022-07-19 21:27:31,136 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 79 predicate places. [2022-07-19 21:27:31,136 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 143 transitions, 394 flow [2022-07-19 21:27:31,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:31,136 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:31,136 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] [2022-07-19 21:27:31,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-19 21:27:31,137 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:31,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:31,137 INFO L85 PathProgramCache]: Analyzing trace with hash 191306843, now seen corresponding path program 1 times [2022-07-19 21:27:31,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:31,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44781599] [2022-07-19 21:27:31,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:31,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:31,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:31,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:31,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44781599] [2022-07-19 21:27:31,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44781599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:31,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:31,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-19 21:27:31,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345112758] [2022-07-19 21:27:31,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:31,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:27:31,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:31,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:27:31,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:27:31,659 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-19 21:27:31,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 143 transitions, 394 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:31,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:31,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-19 21:27:31,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:34,098 INFO L129 PetriNetUnfolder]: 387/1388 cut-off events. [2022-07-19 21:27:34,098 INFO L130 PetriNetUnfolder]: For 1577/1579 co-relation queries the response was YES. [2022-07-19 21:27:34,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3221 conditions, 1388 events. 387/1388 cut-off events. For 1577/1579 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8118 event pairs, 18 based on Foata normal form. 1/1368 useless extension candidates. Maximal degree in co-relation 3170. Up to 141 conditions per place. [2022-07-19 21:27:34,106 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 184 selfloop transitions, 35 changer transitions 39/345 dead transitions. [2022-07-19 21:27:34,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 345 transitions, 1811 flow [2022-07-19 21:27:34,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-19 21:27:34,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-19 21:27:34,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4208 transitions. [2022-07-19 21:27:34,113 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6461916461916462 [2022-07-19 21:27:34,113 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4208 transitions. [2022-07-19 21:27:34,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4208 transitions. [2022-07-19 21:27:34,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:34,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4208 transitions. [2022-07-19 21:27:34,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 113.72972972972973) internal successors, (4208), 37 states have internal predecessors, (4208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:34,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 176.0) internal successors, (6688), 38 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:34,123 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 176.0) internal successors, (6688), 38 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:34,123 INFO L186 Difference]: Start difference. First operand has 238 places, 143 transitions, 394 flow. Second operand 37 states and 4208 transitions. [2022-07-19 21:27:34,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 345 transitions, 1811 flow [2022-07-19 21:27:34,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 345 transitions, 1641 flow, removed 84 selfloop flow, removed 11 redundant places. [2022-07-19 21:27:34,133 INFO L242 Difference]: Finished difference. Result has 249 places, 170 transitions, 710 flow [2022-07-19 21:27:34,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=710, PETRI_PLACES=249, PETRI_TRANSITIONS=170} [2022-07-19 21:27:34,134 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 90 predicate places. [2022-07-19 21:27:34,134 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 170 transitions, 710 flow [2022-07-19 21:27:34,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:34,135 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:34,135 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] [2022-07-19 21:27:34,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-19 21:27:34,135 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:34,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:34,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1559427641, now seen corresponding path program 2 times [2022-07-19 21:27:34,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:34,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207023901] [2022-07-19 21:27:34,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:34,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:34,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:34,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:34,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207023901] [2022-07-19 21:27:34,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207023901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:34,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:34,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-19 21:27:34,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649528171] [2022-07-19 21:27:34,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:34,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:27:34,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:34,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:27:34,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:27:34,653 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-19 21:27:34,668 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 170 transitions, 710 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:34,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:34,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-19 21:27:34,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:37,149 INFO L129 PetriNetUnfolder]: 415/1486 cut-off events. [2022-07-19 21:27:37,150 INFO L130 PetriNetUnfolder]: For 5572/5574 co-relation queries the response was YES. [2022-07-19 21:27:37,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4515 conditions, 1486 events. 415/1486 cut-off events. For 5572/5574 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8885 event pairs, 34 based on Foata normal form. 1/1433 useless extension candidates. Maximal degree in co-relation 4445. Up to 136 conditions per place. [2022-07-19 21:27:37,162 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 192 selfloop transitions, 47 changer transitions 39/365 dead transitions. [2022-07-19 21:27:37,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 365 transitions, 2582 flow [2022-07-19 21:27:37,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-19 21:27:37,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-19 21:27:37,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3991 transitions. [2022-07-19 21:27:37,169 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6478896103896103 [2022-07-19 21:27:37,169 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3991 transitions. [2022-07-19 21:27:37,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3991 transitions. [2022-07-19 21:27:37,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:37,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3991 transitions. [2022-07-19 21:27:37,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.02857142857142) internal successors, (3991), 35 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:37,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:37,179 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:37,180 INFO L186 Difference]: Start difference. First operand has 249 places, 170 transitions, 710 flow. Second operand 35 states and 3991 transitions. [2022-07-19 21:27:37,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 365 transitions, 2582 flow [2022-07-19 21:27:37,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 365 transitions, 2147 flow, removed 171 selfloop flow, removed 21 redundant places. [2022-07-19 21:27:37,201 INFO L242 Difference]: Finished difference. Result has 269 places, 192 transitions, 1036 flow [2022-07-19 21:27:37,202 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1036, PETRI_PLACES=269, PETRI_TRANSITIONS=192} [2022-07-19 21:27:37,202 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 110 predicate places. [2022-07-19 21:27:37,203 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 192 transitions, 1036 flow [2022-07-19 21:27:37,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:37,203 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:37,203 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] [2022-07-19 21:27:37,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-19 21:27:37,204 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:37,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:37,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1306737223, now seen corresponding path program 3 times [2022-07-19 21:27:37,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:37,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832318678] [2022-07-19 21:27:37,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:37,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:37,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:37,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:37,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832318678] [2022-07-19 21:27:37,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832318678] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:37,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:37,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-19 21:27:37,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545391892] [2022-07-19 21:27:37,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:37,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:27:37,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:37,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:27:37,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:27:37,686 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-19 21:27:37,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 192 transitions, 1036 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:37,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:37,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-19 21:27:37,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:42,166 INFO L129 PetriNetUnfolder]: 460/1585 cut-off events. [2022-07-19 21:27:42,166 INFO L130 PetriNetUnfolder]: For 5028/5030 co-relation queries the response was YES. [2022-07-19 21:27:42,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5108 conditions, 1585 events. 460/1585 cut-off events. For 5028/5030 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 9843 event pairs, 12 based on Foata normal form. 1/1562 useless extension candidates. Maximal degree in co-relation 5030. Up to 117 conditions per place. [2022-07-19 21:27:42,178 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 274 selfloop transitions, 35 changer transitions 124/520 dead transitions. [2022-07-19 21:27:42,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 520 transitions, 3984 flow [2022-07-19 21:27:42,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-07-19 21:27:42,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2022-07-19 21:27:42,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 7313 transitions. [2022-07-19 21:27:42,190 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6392482517482517 [2022-07-19 21:27:42,190 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 7313 transitions. [2022-07-19 21:27:42,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 7313 transitions. [2022-07-19 21:27:42,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:42,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 7313 transitions. [2022-07-19 21:27:42,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 112.50769230769231) internal successors, (7313), 65 states have internal predecessors, (7313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:42,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 176.0) internal successors, (11616), 66 states have internal predecessors, (11616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:42,207 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 176.0) internal successors, (11616), 66 states have internal predecessors, (11616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:42,207 INFO L186 Difference]: Start difference. First operand has 269 places, 192 transitions, 1036 flow. Second operand 65 states and 7313 transitions. [2022-07-19 21:27:42,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 520 transitions, 3984 flow [2022-07-19 21:27:42,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 520 transitions, 3310 flow, removed 156 selfloop flow, removed 20 redundant places. [2022-07-19 21:27:42,238 INFO L242 Difference]: Finished difference. Result has 351 places, 192 transitions, 956 flow [2022-07-19 21:27:42,238 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=956, PETRI_PLACES=351, PETRI_TRANSITIONS=192} [2022-07-19 21:27:42,240 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 192 predicate places. [2022-07-19 21:27:42,241 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 192 transitions, 956 flow [2022-07-19 21:27:42,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:42,241 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:42,242 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] [2022-07-19 21:27:42,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-19 21:27:42,242 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:42,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:42,242 INFO L85 PathProgramCache]: Analyzing trace with hash 715640743, now seen corresponding path program 4 times [2022-07-19 21:27:42,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:42,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952513667] [2022-07-19 21:27:42,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:42,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:42,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:42,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:42,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952513667] [2022-07-19 21:27:42,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952513667] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:42,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:42,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-19 21:27:42,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456873553] [2022-07-19 21:27:42,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:42,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:27:42,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:42,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:27:42,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:27:42,769 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-19 21:27:42,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 192 transitions, 956 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:42,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:42,771 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-19 21:27:42,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:45,279 INFO L129 PetriNetUnfolder]: 504/1773 cut-off events. [2022-07-19 21:27:45,279 INFO L130 PetriNetUnfolder]: For 10024/10026 co-relation queries the response was YES. [2022-07-19 21:27:45,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6568 conditions, 1773 events. 504/1773 cut-off events. For 10024/10026 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 11149 event pairs, 62 based on Foata normal form. 1/1715 useless extension candidates. Maximal degree in co-relation 6450. Up to 199 conditions per place. [2022-07-19 21:27:45,305 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 232 selfloop transitions, 41 changer transitions 44/404 dead transitions. [2022-07-19 21:27:45,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 404 transitions, 3417 flow [2022-07-19 21:27:45,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-19 21:27:45,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-19 21:27:45,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4007 transitions. [2022-07-19 21:27:45,310 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.650487012987013 [2022-07-19 21:27:45,310 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4007 transitions. [2022-07-19 21:27:45,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4007 transitions. [2022-07-19 21:27:45,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:45,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4007 transitions. [2022-07-19 21:27:45,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.48571428571428) internal successors, (4007), 35 states have internal predecessors, (4007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:45,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:45,363 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:45,363 INFO L186 Difference]: Start difference. First operand has 351 places, 192 transitions, 956 flow. Second operand 35 states and 4007 transitions. [2022-07-19 21:27:45,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 404 transitions, 3417 flow [2022-07-19 21:27:45,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 404 transitions, 2909 flow, removed 115 selfloop flow, removed 60 redundant places. [2022-07-19 21:27:45,401 INFO L242 Difference]: Finished difference. Result has 298 places, 216 transitions, 1315 flow [2022-07-19 21:27:45,401 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1315, PETRI_PLACES=298, PETRI_TRANSITIONS=216} [2022-07-19 21:27:45,402 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 139 predicate places. [2022-07-19 21:27:45,402 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 216 transitions, 1315 flow [2022-07-19 21:27:45,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:45,403 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:45,403 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:45,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-19 21:27:45,403 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:45,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:45,404 INFO L85 PathProgramCache]: Analyzing trace with hash 580382619, now seen corresponding path program 5 times [2022-07-19 21:27:45,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:45,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796481262] [2022-07-19 21:27:45,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:45,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:45,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:45,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:45,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796481262] [2022-07-19 21:27:45,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796481262] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:45,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:45,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-19 21:27:45,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870195235] [2022-07-19 21:27:45,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:45,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:27:45,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:45,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:27:45,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:27:45,930 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-19 21:27:45,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 216 transitions, 1315 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:45,931 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:45,931 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-19 21:27:45,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:48,327 INFO L129 PetriNetUnfolder]: 631/2162 cut-off events. [2022-07-19 21:27:48,327 INFO L130 PetriNetUnfolder]: For 12409/12411 co-relation queries the response was YES. [2022-07-19 21:27:48,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8088 conditions, 2162 events. 631/2162 cut-off events. For 12409/12411 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 14432 event pairs, 102 based on Foata normal form. 1/2123 useless extension candidates. Maximal degree in co-relation 7994. Up to 351 conditions per place. [2022-07-19 21:27:48,352 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 269 selfloop transitions, 46 changer transitions 36/438 dead transitions. [2022-07-19 21:27:48,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 438 transitions, 3868 flow [2022-07-19 21:27:48,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-19 21:27:48,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-19 21:27:48,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4004 transitions. [2022-07-19 21:27:48,356 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.65 [2022-07-19 21:27:48,356 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4004 transitions. [2022-07-19 21:27:48,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4004 transitions. [2022-07-19 21:27:48,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:48,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4004 transitions. [2022-07-19 21:27:48,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.4) internal successors, (4004), 35 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) [2022-07-19 21:27:48,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:48,365 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:48,365 INFO L186 Difference]: Start difference. First operand has 298 places, 216 transitions, 1315 flow. Second operand 35 states and 4004 transitions. [2022-07-19 21:27:48,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 438 transitions, 3868 flow [2022-07-19 21:27:48,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 438 transitions, 3349 flow, removed 178 selfloop flow, removed 19 redundant places. [2022-07-19 21:27:48,418 INFO L242 Difference]: Finished difference. Result has 325 places, 243 transitions, 1560 flow [2022-07-19 21:27:48,418 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1560, PETRI_PLACES=325, PETRI_TRANSITIONS=243} [2022-07-19 21:27:48,419 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 166 predicate places. [2022-07-19 21:27:48,419 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 243 transitions, 1560 flow [2022-07-19 21:27:48,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:48,420 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:48,420 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] [2022-07-19 21:27:48,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-19 21:27:48,420 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:48,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:48,421 INFO L85 PathProgramCache]: Analyzing trace with hash 640294289, now seen corresponding path program 6 times [2022-07-19 21:27:48,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:48,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890922364] [2022-07-19 21:27:48,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:48,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:48,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:48,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890922364] [2022-07-19 21:27:48,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890922364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:48,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:48,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-19 21:27:48,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064573394] [2022-07-19 21:27:48,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:48,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:27:48,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:48,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:27:48,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:27:48,882 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-19 21:27:48,883 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 243 transitions, 1560 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:48,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:48,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-19 21:27:48,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:51,632 INFO L129 PetriNetUnfolder]: 899/2991 cut-off events. [2022-07-19 21:27:51,633 INFO L130 PetriNetUnfolder]: For 20276/20278 co-relation queries the response was YES. [2022-07-19 21:27:51,664 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11851 conditions, 2991 events. 899/2991 cut-off events. For 20276/20278 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 22288 event pairs, 182 based on Foata normal form. 1/2899 useless extension candidates. Maximal degree in co-relation 11743. Up to 834 conditions per place. [2022-07-19 21:27:51,676 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 325 selfloop transitions, 58 changer transitions 39/509 dead transitions. [2022-07-19 21:27:51,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 509 transitions, 5165 flow [2022-07-19 21:27:51,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-19 21:27:51,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-19 21:27:51,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4024 transitions. [2022-07-19 21:27:51,680 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6532467532467533 [2022-07-19 21:27:51,680 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4024 transitions. [2022-07-19 21:27:51,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4024 transitions. [2022-07-19 21:27:51,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:51,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4024 transitions. [2022-07-19 21:27:51,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.97142857142858) internal successors, (4024), 35 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:51,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:51,688 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:51,689 INFO L186 Difference]: Start difference. First operand has 325 places, 243 transitions, 1560 flow. Second operand 35 states and 4024 transitions. [2022-07-19 21:27:51,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 509 transitions, 5165 flow [2022-07-19 21:27:51,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 509 transitions, 4707 flow, removed 176 selfloop flow, removed 19 redundant places. [2022-07-19 21:27:51,786 INFO L242 Difference]: Finished difference. Result has 357 places, 274 transitions, 2132 flow [2022-07-19 21:27:51,787 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1334, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2132, PETRI_PLACES=357, PETRI_TRANSITIONS=274} [2022-07-19 21:27:51,787 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 198 predicate places. [2022-07-19 21:27:51,788 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 274 transitions, 2132 flow [2022-07-19 21:27:51,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:51,788 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:51,789 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] [2022-07-19 21:27:51,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-19 21:27:51,789 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:51,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:51,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1506690079, now seen corresponding path program 7 times [2022-07-19 21:27:51,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:51,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055800759] [2022-07-19 21:27:51,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:51,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:52,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:52,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:52,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055800759] [2022-07-19 21:27:52,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055800759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:52,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:52,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-19 21:27:52,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145003438] [2022-07-19 21:27:52,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:52,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:27:52,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:52,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:27:52,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:27:52,281 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-19 21:27:52,282 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 274 transitions, 2132 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:52,282 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:52,282 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-19 21:27:52,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:57,104 INFO L129 PetriNetUnfolder]: 1083/3715 cut-off events. [2022-07-19 21:27:57,105 INFO L130 PetriNetUnfolder]: For 32855/32857 co-relation queries the response was YES. [2022-07-19 21:27:57,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16015 conditions, 3715 events. 1083/3715 cut-off events. For 32855/32857 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 29851 event pairs, 237 based on Foata normal form. 1/3647 useless extension candidates. Maximal degree in co-relation 15889. Up to 864 conditions per place. [2022-07-19 21:27:57,152 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 413 selfloop transitions, 26 changer transitions 112/638 dead transitions. [2022-07-19 21:27:57,152 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 638 transitions, 6920 flow [2022-07-19 21:27:57,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-07-19 21:27:57,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-07-19 21:27:57,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 7020 transitions. [2022-07-19 21:27:57,158 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6433284457478006 [2022-07-19 21:27:57,158 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 7020 transitions. [2022-07-19 21:27:57,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 7020 transitions. [2022-07-19 21:27:57,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:57,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 7020 transitions. [2022-07-19 21:27:57,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 113.2258064516129) internal successors, (7020), 62 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:57,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 176.0) internal successors, (11088), 63 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:57,175 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 176.0) internal successors, (11088), 63 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:57,175 INFO L186 Difference]: Start difference. First operand has 357 places, 274 transitions, 2132 flow. Second operand 62 states and 7020 transitions. [2022-07-19 21:27:57,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 638 transitions, 6920 flow [2022-07-19 21:27:57,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 638 transitions, 6210 flow, removed 354 selfloop flow, removed 15 redundant places. [2022-07-19 21:27:57,330 INFO L242 Difference]: Finished difference. Result has 445 places, 283 transitions, 2144 flow [2022-07-19 21:27:57,331 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=2144, PETRI_PLACES=445, PETRI_TRANSITIONS=283} [2022-07-19 21:27:57,331 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 286 predicate places. [2022-07-19 21:27:57,331 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 283 transitions, 2144 flow [2022-07-19 21:27:57,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:57,332 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:57,332 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] [2022-07-19 21:27:57,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-19 21:27:57,333 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:57,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:57,333 INFO L85 PathProgramCache]: Analyzing trace with hash -38731419, now seen corresponding path program 8 times [2022-07-19 21:27:57,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:57,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678257916] [2022-07-19 21:27:57,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:57,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:57,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:57,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:57,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678257916] [2022-07-19 21:27:57,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678257916] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:57,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:57,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-19 21:27:57,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697897552] [2022-07-19 21:27:57,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:57,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:27:57,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:57,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:27:57,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:27:57,794 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-19 21:27:57,795 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 283 transitions, 2144 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:57,795 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:57,796 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-19 21:27:57,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:01,071 INFO L129 PetriNetUnfolder]: 1126/3824 cut-off events. [2022-07-19 21:28:01,072 INFO L130 PetriNetUnfolder]: For 69336/69342 co-relation queries the response was YES. [2022-07-19 21:28:01,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20096 conditions, 3824 events. 1126/3824 cut-off events. For 69336/69342 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 30868 event pairs, 226 based on Foata normal form. 1/3703 useless extension candidates. Maximal degree in co-relation 19927. Up to 834 conditions per place. [2022-07-19 21:28:01,138 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 402 selfloop transitions, 51 changer transitions 43/583 dead transitions. [2022-07-19 21:28:01,138 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 583 transitions, 7814 flow [2022-07-19 21:28:01,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-19 21:28:01,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-19 21:28:01,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4037 transitions. [2022-07-19 21:28:01,143 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6553571428571429 [2022-07-19 21:28:01,143 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4037 transitions. [2022-07-19 21:28:01,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4037 transitions. [2022-07-19 21:28:01,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:01,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4037 transitions. [2022-07-19 21:28:01,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.34285714285714) internal successors, (4037), 35 states have internal predecessors, (4037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:01,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:01,154 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:01,154 INFO L186 Difference]: Start difference. First operand has 445 places, 283 transitions, 2144 flow. Second operand 35 states and 4037 transitions. [2022-07-19 21:28:01,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 583 transitions, 7814 flow [2022-07-19 21:28:01,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 583 transitions, 7097 flow, removed 327 selfloop flow, removed 30 redundant places. [2022-07-19 21:28:01,466 INFO L242 Difference]: Finished difference. Result has 425 places, 305 transitions, 2756 flow [2022-07-19 21:28:01,466 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2018, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2756, PETRI_PLACES=425, PETRI_TRANSITIONS=305} [2022-07-19 21:28:01,467 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 266 predicate places. [2022-07-19 21:28:01,467 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 305 transitions, 2756 flow [2022-07-19 21:28:01,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:01,468 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:01,468 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] [2022-07-19 21:28:01,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-19 21:28:01,468 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:28:01,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:01,469 INFO L85 PathProgramCache]: Analyzing trace with hash 307693301, now seen corresponding path program 9 times [2022-07-19 21:28:01,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:01,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713259772] [2022-07-19 21:28:01,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:01,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:01,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:01,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713259772] [2022-07-19 21:28:01,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713259772] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:01,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:01,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-19 21:28:01,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601736487] [2022-07-19 21:28:01,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:01,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:28:01,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:01,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:28:01,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:28:01,922 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-19 21:28:01,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 305 transitions, 2756 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:01,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:01,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-19 21:28:01,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:07,109 INFO L129 PetriNetUnfolder]: 1340/4426 cut-off events. [2022-07-19 21:28:07,109 INFO L130 PetriNetUnfolder]: For 86189/86196 co-relation queries the response was YES. [2022-07-19 21:28:07,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24583 conditions, 4426 events. 1340/4426 cut-off events. For 86189/86196 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 37216 event pairs, 486 based on Foata normal form. 3/4337 useless extension candidates. Maximal degree in co-relation 24416. Up to 1269 conditions per place. [2022-07-19 21:28:07,224 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 436 selfloop transitions, 26 changer transitions 112/661 dead transitions. [2022-07-19 21:28:07,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 661 transitions, 9118 flow [2022-07-19 21:28:07,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-07-19 21:28:07,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-07-19 21:28:07,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 7022 transitions. [2022-07-19 21:28:07,230 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6435117302052786 [2022-07-19 21:28:07,230 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 7022 transitions. [2022-07-19 21:28:07,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 7022 transitions. [2022-07-19 21:28:07,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:07,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 7022 transitions. [2022-07-19 21:28:07,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 113.25806451612904) internal successors, (7022), 62 states have internal predecessors, (7022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:07,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 176.0) internal successors, (11088), 63 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:07,246 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 176.0) internal successors, (11088), 63 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:07,247 INFO L186 Difference]: Start difference. First operand has 425 places, 305 transitions, 2756 flow. Second operand 62 states and 7022 transitions. [2022-07-19 21:28:07,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 661 transitions, 9118 flow [2022-07-19 21:28:07,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 661 transitions, 8360 flow, removed 264 selfloop flow, removed 20 redundant places. [2022-07-19 21:28:07,558 INFO L242 Difference]: Finished difference. Result has 509 places, 315 transitions, 2808 flow [2022-07-19 21:28:07,558 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=2808, PETRI_PLACES=509, PETRI_TRANSITIONS=315} [2022-07-19 21:28:07,559 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 350 predicate places. [2022-07-19 21:28:07,559 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 315 transitions, 2808 flow [2022-07-19 21:28:07,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:07,560 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:07,560 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, 1, 1, 1, 1, 1] [2022-07-19 21:28:07,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-19 21:28:07,560 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:28:07,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:07,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1216122745, now seen corresponding path program 10 times [2022-07-19 21:28:07,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:07,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70190675] [2022-07-19 21:28:07,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:07,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:08,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:08,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:08,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70190675] [2022-07-19 21:28:08,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70190675] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:08,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:08,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-19 21:28:08,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298548387] [2022-07-19 21:28:08,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:08,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:28:08,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:08,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:28:08,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:28:08,029 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-19 21:28:08,030 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 315 transitions, 2808 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:08,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:08,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-19 21:28:08,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:11,852 INFO L129 PetriNetUnfolder]: 1449/5027 cut-off events. [2022-07-19 21:28:11,852 INFO L130 PetriNetUnfolder]: For 152233/152256 co-relation queries the response was YES. [2022-07-19 21:28:11,917 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29934 conditions, 5027 events. 1449/5027 cut-off events. For 152233/152256 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 43916 event pairs, 303 based on Foata normal form. 3/4853 useless extension candidates. Maximal degree in co-relation 29722. Up to 1241 conditions per place. [2022-07-19 21:28:11,935 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 423 selfloop transitions, 54 changer transitions 52/616 dead transitions. [2022-07-19 21:28:11,935 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 616 transitions, 9814 flow [2022-07-19 21:28:11,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-19 21:28:11,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-19 21:28:11,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4011 transitions. [2022-07-19 21:28:11,938 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6511363636363636 [2022-07-19 21:28:11,938 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4011 transitions. [2022-07-19 21:28:11,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4011 transitions. [2022-07-19 21:28:11,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:11,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4011 transitions. [2022-07-19 21:28:11,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.6) internal successors, (4011), 35 states have internal predecessors, (4011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:11,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:11,947 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:11,947 INFO L186 Difference]: Start difference. First operand has 509 places, 315 transitions, 2808 flow. Second operand 35 states and 4011 transitions. [2022-07-19 21:28:11,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 616 transitions, 9814 flow [2022-07-19 21:28:12,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 616 transitions, 8434 flow, removed 662 selfloop flow, removed 51 redundant places. [2022-07-19 21:28:12,434 INFO L242 Difference]: Finished difference. Result has 471 places, 341 transitions, 3310 flow [2022-07-19 21:28:12,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2565, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3310, PETRI_PLACES=471, PETRI_TRANSITIONS=341} [2022-07-19 21:28:12,435 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 312 predicate places. [2022-07-19 21:28:12,435 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 341 transitions, 3310 flow [2022-07-19 21:28:12,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:12,436 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:12,436 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] [2022-07-19 21:28:12,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-19 21:28:12,437 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:28:12,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:12,437 INFO L85 PathProgramCache]: Analyzing trace with hash -505615517, now seen corresponding path program 11 times [2022-07-19 21:28:12,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:12,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168661444] [2022-07-19 21:28:12,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:12,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:12,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:12,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:12,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168661444] [2022-07-19 21:28:12,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168661444] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:12,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:12,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-19 21:28:12,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055842694] [2022-07-19 21:28:12,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:12,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:28:12,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:12,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:28:12,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:28:12,951 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-19 21:28:12,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 341 transitions, 3310 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:12,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:12,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-19 21:28:12,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:16,805 INFO L129 PetriNetUnfolder]: 1463/4857 cut-off events. [2022-07-19 21:28:16,805 INFO L130 PetriNetUnfolder]: For 102935/102946 co-relation queries the response was YES. [2022-07-19 21:28:16,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27672 conditions, 4857 events. 1463/4857 cut-off events. For 102935/102946 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 41690 event pairs, 431 based on Foata normal form. 5/4780 useless extension candidates. Maximal degree in co-relation 27481. Up to 1500 conditions per place. [2022-07-19 21:28:16,881 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 435 selfloop transitions, 47 changer transitions 36/605 dead transitions. [2022-07-19 21:28:16,882 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 605 transitions, 8032 flow [2022-07-19 21:28:16,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-19 21:28:16,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-19 21:28:16,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4036 transitions. [2022-07-19 21:28:16,884 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6551948051948052 [2022-07-19 21:28:16,885 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4036 transitions. [2022-07-19 21:28:16,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4036 transitions. [2022-07-19 21:28:16,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:16,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4036 transitions. [2022-07-19 21:28:16,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.31428571428572) internal successors, (4036), 35 states have internal predecessors, (4036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:16,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:16,890 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:16,890 INFO L186 Difference]: Start difference. First operand has 471 places, 341 transitions, 3310 flow. Second operand 35 states and 4036 transitions. [2022-07-19 21:28:16,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 605 transitions, 8032 flow [2022-07-19 21:28:17,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 605 transitions, 7389 flow, removed 251 selfloop flow, removed 19 redundant places. [2022-07-19 21:28:17,272 INFO L242 Difference]: Finished difference. Result has 494 places, 361 transitions, 3627 flow [2022-07-19 21:28:17,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2859, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3627, PETRI_PLACES=494, PETRI_TRANSITIONS=361} [2022-07-19 21:28:17,273 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 335 predicate places. [2022-07-19 21:28:17,273 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 361 transitions, 3627 flow [2022-07-19 21:28:17,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:17,274 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:17,274 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] [2022-07-19 21:28:17,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-19 21:28:17,274 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:28:17,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:17,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1590040421, now seen corresponding path program 12 times [2022-07-19 21:28:17,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:17,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757733756] [2022-07-19 21:28:17,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:17,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:17,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:17,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:17,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757733756] [2022-07-19 21:28:17,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757733756] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:17,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:17,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-19 21:28:17,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016978442] [2022-07-19 21:28:17,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:17,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:28:17,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:17,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:28:17,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:28:17,790 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-19 21:28:17,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 361 transitions, 3627 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:17,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:17,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-19 21:28:17,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:21,871 INFO L129 PetriNetUnfolder]: 1625/5573 cut-off events. [2022-07-19 21:28:21,871 INFO L130 PetriNetUnfolder]: For 119134/119157 co-relation queries the response was YES. [2022-07-19 21:28:21,940 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31140 conditions, 5573 events. 1625/5573 cut-off events. For 119134/119157 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 49543 event pairs, 414 based on Foata normal form. 3/5385 useless extension candidates. Maximal degree in co-relation 30940. Up to 1617 conditions per place. [2022-07-19 21:28:21,958 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 463 selfloop transitions, 51 changer transitions 52/653 dead transitions. [2022-07-19 21:28:21,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 653 transitions, 9676 flow [2022-07-19 21:28:21,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-19 21:28:21,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-19 21:28:21,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4027 transitions. [2022-07-19 21:28:21,961 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6537337662337662 [2022-07-19 21:28:21,961 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4027 transitions. [2022-07-19 21:28:21,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4027 transitions. [2022-07-19 21:28:21,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:21,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4027 transitions. [2022-07-19 21:28:21,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.05714285714286) internal successors, (4027), 35 states have internal predecessors, (4027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:21,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:21,966 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:21,966 INFO L186 Difference]: Start difference. First operand has 494 places, 361 transitions, 3627 flow. Second operand 35 states and 4027 transitions. [2022-07-19 21:28:21,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 653 transitions, 9676 flow [2022-07-19 21:28:22,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 653 transitions, 9044 flow, removed 245 selfloop flow, removed 21 redundant places. [2022-07-19 21:28:22,489 INFO L242 Difference]: Finished difference. Result has 521 places, 388 transitions, 3912 flow [2022-07-19 21:28:22,490 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3107, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3912, PETRI_PLACES=521, PETRI_TRANSITIONS=388} [2022-07-19 21:28:22,491 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 362 predicate places. [2022-07-19 21:28:22,491 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 388 transitions, 3912 flow [2022-07-19 21:28:22,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:22,491 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:22,492 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] [2022-07-19 21:28:22,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-19 21:28:22,492 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:28:22,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:22,492 INFO L85 PathProgramCache]: Analyzing trace with hash 296849815, now seen corresponding path program 13 times [2022-07-19 21:28:22,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:22,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842802236] [2022-07-19 21:28:22,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:22,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:22,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:22,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:22,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842802236] [2022-07-19 21:28:22,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842802236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:22,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:22,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-19 21:28:22,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163611139] [2022-07-19 21:28:22,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:22,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:28:22,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:22,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:28:22,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:28:22,987 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-19 21:28:22,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 388 transitions, 3912 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:22,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:22,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-19 21:28:22,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:27,157 INFO L129 PetriNetUnfolder]: 1689/5606 cut-off events. [2022-07-19 21:28:27,158 INFO L130 PetriNetUnfolder]: For 140229/140241 co-relation queries the response was YES. [2022-07-19 21:28:27,235 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33815 conditions, 5606 events. 1689/5606 cut-off events. For 140229/140241 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 49723 event pairs, 495 based on Foata normal form. 3/5515 useless extension candidates. Maximal degree in co-relation 33599. Up to 1783 conditions per place. [2022-07-19 21:28:27,254 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 503 selfloop transitions, 51 changer transitions 36/677 dead transitions. [2022-07-19 21:28:27,254 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 677 transitions, 9519 flow [2022-07-19 21:28:27,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-19 21:28:27,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-19 21:28:27,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4048 transitions. [2022-07-19 21:28:27,257 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2022-07-19 21:28:27,257 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4048 transitions. [2022-07-19 21:28:27,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4048 transitions. [2022-07-19 21:28:27,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:27,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4048 transitions. [2022-07-19 21:28:27,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.65714285714286) internal successors, (4048), 35 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:27,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:27,263 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:27,263 INFO L186 Difference]: Start difference. First operand has 521 places, 388 transitions, 3912 flow. Second operand 35 states and 4048 transitions. [2022-07-19 21:28:27,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 677 transitions, 9519 flow [2022-07-19 21:28:27,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 677 transitions, 8844 flow, removed 291 selfloop flow, removed 19 redundant places. [2022-07-19 21:28:27,897 INFO L242 Difference]: Finished difference. Result has 545 places, 410 transitions, 4309 flow [2022-07-19 21:28:27,897 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3417, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4309, PETRI_PLACES=545, PETRI_TRANSITIONS=410} [2022-07-19 21:28:27,898 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 386 predicate places. [2022-07-19 21:28:27,898 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 410 transitions, 4309 flow [2022-07-19 21:28:27,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:27,899 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:27,899 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] [2022-07-19 21:28:27,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-19 21:28:27,899 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:28:27,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:27,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1909176201, now seen corresponding path program 14 times [2022-07-19 21:28:27,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:27,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741830176] [2022-07-19 21:28:27,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:27,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:28,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:28,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:28,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741830176] [2022-07-19 21:28:28,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741830176] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:28,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:28,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-19 21:28:28,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910609455] [2022-07-19 21:28:28,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:28,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:28:28,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:28,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:28:28,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:28:28,364 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-19 21:28:28,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 410 transitions, 4309 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:28,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:28,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-19 21:28:28,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:32,726 INFO L129 PetriNetUnfolder]: 1809/5984 cut-off events. [2022-07-19 21:28:32,727 INFO L130 PetriNetUnfolder]: For 164457/164477 co-relation queries the response was YES. [2022-07-19 21:28:32,814 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37477 conditions, 5984 events. 1809/5984 cut-off events. For 164457/164477 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 54046 event pairs, 579 based on Foata normal form. 3/5796 useless extension candidates. Maximal degree in co-relation 37252. Up to 1460 conditions per place. [2022-07-19 21:28:32,836 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 544 selfloop transitions, 61 changer transitions 47/739 dead transitions. [2022-07-19 21:28:32,837 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 739 transitions, 11826 flow [2022-07-19 21:28:32,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-19 21:28:32,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-19 21:28:32,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4039 transitions. [2022-07-19 21:28:32,839 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6556818181818181 [2022-07-19 21:28:32,839 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4039 transitions. [2022-07-19 21:28:32,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4039 transitions. [2022-07-19 21:28:32,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:32,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4039 transitions. [2022-07-19 21:28:32,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.4) internal successors, (4039), 35 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:32,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:32,845 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:32,845 INFO L186 Difference]: Start difference. First operand has 545 places, 410 transitions, 4309 flow. Second operand 35 states and 4039 transitions. [2022-07-19 21:28:32,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 739 transitions, 11826 flow [2022-07-19 21:28:33,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 739 transitions, 11178 flow, removed 265 selfloop flow, removed 20 redundant places. [2022-07-19 21:28:33,528 INFO L242 Difference]: Finished difference. Result has 570 places, 434 transitions, 4770 flow [2022-07-19 21:28:33,528 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3800, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4770, PETRI_PLACES=570, PETRI_TRANSITIONS=434} [2022-07-19 21:28:33,529 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 411 predicate places. [2022-07-19 21:28:33,529 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 434 transitions, 4770 flow [2022-07-19 21:28:33,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:33,530 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:33,530 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:33,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-07-19 21:28:33,530 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:28:33,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:33,531 INFO L85 PathProgramCache]: Analyzing trace with hash -375152665, now seen corresponding path program 15 times [2022-07-19 21:28:33,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:33,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170968108] [2022-07-19 21:28:33,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:33,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:34,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:34,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170968108] [2022-07-19 21:28:34,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170968108] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:34,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:34,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-19 21:28:34,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972790146] [2022-07-19 21:28:34,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:34,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:28:34,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:34,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:28:34,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:28:34,056 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-19 21:28:34,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 434 transitions, 4770 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:34,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:34,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-19 21:28:34,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:38,498 INFO L129 PetriNetUnfolder]: 1915/6243 cut-off events. [2022-07-19 21:28:38,499 INFO L130 PetriNetUnfolder]: For 197925/197940 co-relation queries the response was YES. [2022-07-19 21:28:38,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41423 conditions, 6243 events. 1915/6243 cut-off events. For 197925/197940 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 56825 event pairs, 571 based on Foata normal form. 5/6134 useless extension candidates. Maximal degree in co-relation 41185. Up to 2012 conditions per place. [2022-07-19 21:28:38,623 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 552 selfloop transitions, 54 changer transitions 36/729 dead transitions. [2022-07-19 21:28:38,623 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 729 transitions, 11109 flow [2022-07-19 21:28:38,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-19 21:28:38,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-19 21:28:38,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4050 transitions. [2022-07-19 21:28:38,626 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6574675324675324 [2022-07-19 21:28:38,626 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4050 transitions. [2022-07-19 21:28:38,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4050 transitions. [2022-07-19 21:28:38,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:38,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4050 transitions. [2022-07-19 21:28:38,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.71428571428571) internal successors, (4050), 35 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:38,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:38,632 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:38,633 INFO L186 Difference]: Start difference. First operand has 570 places, 434 transitions, 4770 flow. Second operand 35 states and 4050 transitions. [2022-07-19 21:28:38,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 729 transitions, 11109 flow [2022-07-19 21:28:39,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 729 transitions, 10303 flow, removed 337 selfloop flow, removed 20 redundant places. [2022-07-19 21:28:39,722 INFO L242 Difference]: Finished difference. Result has 595 places, 458 transitions, 5186 flow [2022-07-19 21:28:39,722 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4167, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5186, PETRI_PLACES=595, PETRI_TRANSITIONS=458} [2022-07-19 21:28:39,722 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 436 predicate places. [2022-07-19 21:28:39,723 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 458 transitions, 5186 flow [2022-07-19 21:28:39,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:39,723 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:39,723 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] [2022-07-19 21:28:39,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-07-19 21:28:39,724 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:28:39,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:39,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1705616637, now seen corresponding path program 16 times [2022-07-19 21:28:39,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:39,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422558854] [2022-07-19 21:28:39,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:39,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:40,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:40,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:40,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422558854] [2022-07-19 21:28:40,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422558854] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:40,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:40,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-19 21:28:40,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852298337] [2022-07-19 21:28:40,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:40,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:28:40,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:40,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:28:40,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:28:40,175 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-19 21:28:40,176 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 458 transitions, 5186 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:40,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:40,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-19 21:28:40,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:45,126 INFO L129 PetriNetUnfolder]: 2128/7084 cut-off events. [2022-07-19 21:28:45,126 INFO L130 PetriNetUnfolder]: For 222670/222703 co-relation queries the response was YES. [2022-07-19 21:28:45,249 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46069 conditions, 7084 events. 2128/7084 cut-off events. For 222670/222703 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 66700 event pairs, 684 based on Foata normal form. 3/6846 useless extension candidates. Maximal degree in co-relation 45819. Up to 2645 conditions per place. [2022-07-19 21:28:45,277 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 562 selfloop transitions, 52 changer transitions 52/753 dead transitions. [2022-07-19 21:28:45,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 753 transitions, 12037 flow [2022-07-19 21:28:45,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-19 21:28:45,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-19 21:28:45,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4043 transitions. [2022-07-19 21:28:45,279 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6563311688311688 [2022-07-19 21:28:45,279 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4043 transitions. [2022-07-19 21:28:45,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4043 transitions. [2022-07-19 21:28:45,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:45,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4043 transitions. [2022-07-19 21:28:45,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.51428571428572) internal successors, (4043), 35 states have internal predecessors, (4043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:45,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:45,285 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:45,285 INFO L186 Difference]: Start difference. First operand has 595 places, 458 transitions, 5186 flow. Second operand 35 states and 4043 transitions. [2022-07-19 21:28:45,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 753 transitions, 12037 flow [2022-07-19 21:28:46,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 753 transitions, 11363 flow, removed 284 selfloop flow, removed 20 redundant places. [2022-07-19 21:28:46,486 INFO L242 Difference]: Finished difference. Result has 624 places, 486 transitions, 5518 flow [2022-07-19 21:28:46,487 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4623, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5518, PETRI_PLACES=624, PETRI_TRANSITIONS=486} [2022-07-19 21:28:46,487 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 465 predicate places. [2022-07-19 21:28:46,487 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 486 transitions, 5518 flow [2022-07-19 21:28:46,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:46,488 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:46,488 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] [2022-07-19 21:28:46,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-07-19 21:28:46,488 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:28:46,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:46,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1903491923, now seen corresponding path program 17 times [2022-07-19 21:28:46,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:46,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305608929] [2022-07-19 21:28:46,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:46,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:46,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:46,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:46,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305608929] [2022-07-19 21:28:46,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305608929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:46,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:46,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-19 21:28:46,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134778918] [2022-07-19 21:28:46,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:46,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:28:46,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:46,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:28:46,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:28:46,972 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-19 21:28:46,973 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 486 transitions, 5518 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:46,973 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:46,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-19 21:28:46,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:52,263 INFO L129 PetriNetUnfolder]: 2247/7397 cut-off events. [2022-07-19 21:28:52,264 INFO L130 PetriNetUnfolder]: For 260585/260605 co-relation queries the response was YES. [2022-07-19 21:28:52,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50767 conditions, 7397 events. 2247/7397 cut-off events. For 260585/260605 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 70514 event pairs, 699 based on Foata normal form. 5/7267 useless extension candidates. Maximal degree in co-relation 50501. Up to 2373 conditions per place. [2022-07-19 21:28:52,455 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 628 selfloop transitions, 57 changer transitions 36/808 dead transitions. [2022-07-19 21:28:52,455 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 808 transitions, 12562 flow [2022-07-19 21:28:52,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-19 21:28:52,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-19 21:28:52,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4065 transitions. [2022-07-19 21:28:52,458 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6599025974025974 [2022-07-19 21:28:52,458 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4065 transitions. [2022-07-19 21:28:52,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4065 transitions. [2022-07-19 21:28:52,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:52,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4065 transitions. [2022-07-19 21:28:52,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 116.14285714285714) internal successors, (4065), 35 states have internal predecessors, (4065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:52,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:52,465 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:52,465 INFO L186 Difference]: Start difference. First operand has 624 places, 486 transitions, 5518 flow. Second operand 35 states and 4065 transitions. [2022-07-19 21:28:52,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 643 places, 808 transitions, 12562 flow [2022-07-19 21:28:54,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 808 transitions, 11798 flow, removed 351 selfloop flow, removed 18 redundant places. [2022-07-19 21:28:54,013 INFO L242 Difference]: Finished difference. Result has 653 places, 511 transitions, 6055 flow [2022-07-19 21:28:54,014 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4953, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6055, PETRI_PLACES=653, PETRI_TRANSITIONS=511} [2022-07-19 21:28:54,014 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 494 predicate places. [2022-07-19 21:28:54,014 INFO L495 AbstractCegarLoop]: Abstraction has has 653 places, 511 transitions, 6055 flow [2022-07-19 21:28:54,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:54,015 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:54,015 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] [2022-07-19 21:28:54,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-07-19 21:28:54,016 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:28:54,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:54,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1163892451, now seen corresponding path program 18 times [2022-07-19 21:28:54,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:54,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281607170] [2022-07-19 21:28:54,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:54,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:54,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:54,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:54,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281607170] [2022-07-19 21:28:54,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281607170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:54,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:54,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-19 21:28:54,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424842903] [2022-07-19 21:28:54,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:54,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:28:54,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:54,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:28:54,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:28:54,495 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-19 21:28:54,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 653 places, 511 transitions, 6055 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:54,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:54,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-19 21:28:54,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:00,151 INFO L129 PetriNetUnfolder]: 2382/7881 cut-off events. [2022-07-19 21:29:00,151 INFO L130 PetriNetUnfolder]: For 303640/303672 co-relation queries the response was YES. [2022-07-19 21:29:00,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55877 conditions, 7881 events. 2382/7881 cut-off events. For 303640/303672 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 76270 event pairs, 891 based on Foata normal form. 5/7612 useless extension candidates. Maximal degree in co-relation 55598. Up to 1903 conditions per place. [2022-07-19 21:29:00,347 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 654 selfloop transitions, 60 changer transitions 47/848 dead transitions. [2022-07-19 21:29:00,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 848 transitions, 14770 flow [2022-07-19 21:29:00,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-19 21:29:00,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-19 21:29:00,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4053 transitions. [2022-07-19 21:29:00,350 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6579545454545455 [2022-07-19 21:29:00,350 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4053 transitions. [2022-07-19 21:29:00,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4053 transitions. [2022-07-19 21:29:00,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:00,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4053 transitions. [2022-07-19 21:29:00,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.8) internal successors, (4053), 35 states have internal predecessors, (4053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:00,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:00,357 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:00,357 INFO L186 Difference]: Start difference. First operand has 653 places, 511 transitions, 6055 flow. Second operand 35 states and 4053 transitions. [2022-07-19 21:29:00,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 848 transitions, 14770 flow [2022-07-19 21:29:01,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 848 transitions, 14000 flow, removed 342 selfloop flow, removed 20 redundant places. [2022-07-19 21:29:01,924 INFO L242 Difference]: Finished difference. Result has 680 places, 536 transitions, 6568 flow [2022-07-19 21:29:01,925 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=5440, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6568, PETRI_PLACES=680, PETRI_TRANSITIONS=536} [2022-07-19 21:29:01,925 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 521 predicate places. [2022-07-19 21:29:01,925 INFO L495 AbstractCegarLoop]: Abstraction has has 680 places, 536 transitions, 6568 flow [2022-07-19 21:29:01,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:01,926 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:01,926 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] [2022-07-19 21:29:01,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-07-19 21:29:01,926 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:29:01,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:01,927 INFO L85 PathProgramCache]: Analyzing trace with hash -115917063, now seen corresponding path program 19 times [2022-07-19 21:29:01,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:01,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066470423] [2022-07-19 21:29:01,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:01,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:02,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:02,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:02,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066470423] [2022-07-19 21:29:02,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066470423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:02,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:02,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-19 21:29:02,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878594436] [2022-07-19 21:29:02,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:02,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:29:02,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:02,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:29:02,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:29:02,472 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-19 21:29:02,474 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 536 transitions, 6568 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:02,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:02,474 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-19 21:29:02,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:08,246 INFO L129 PetriNetUnfolder]: 2394/7884 cut-off events. [2022-07-19 21:29:08,246 INFO L130 PetriNetUnfolder]: For 334008/334034 co-relation queries the response was YES. [2022-07-19 21:29:08,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57840 conditions, 7884 events. 2394/7884 cut-off events. For 334008/334034 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 76331 event pairs, 790 based on Foata normal form. 5/7723 useless extension candidates. Maximal degree in co-relation 57548. Up to 2654 conditions per place. [2022-07-19 21:29:08,431 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 658 selfloop transitions, 62 changer transitions 44/851 dead transitions. [2022-07-19 21:29:08,431 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 851 transitions, 14134 flow [2022-07-19 21:29:08,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-19 21:29:08,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-19 21:29:08,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4033 transitions. [2022-07-19 21:29:08,434 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6547077922077922 [2022-07-19 21:29:08,434 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4033 transitions. [2022-07-19 21:29:08,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4033 transitions. [2022-07-19 21:29:08,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:08,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4033 transitions. [2022-07-19 21:29:08,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.22857142857143) internal successors, (4033), 35 states have internal predecessors, (4033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:08,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:08,440 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:08,440 INFO L186 Difference]: Start difference. First operand has 680 places, 536 transitions, 6568 flow. Second operand 35 states and 4033 transitions. [2022-07-19 21:29:08,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 699 places, 851 transitions, 14134 flow [2022-07-19 21:29:10,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 851 transitions, 13177 flow, removed 434 selfloop flow, removed 20 redundant places. [2022-07-19 21:29:10,487 INFO L242 Difference]: Finished difference. Result has 706 places, 559 transitions, 6901 flow [2022-07-19 21:29:10,488 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=5835, PETRI_DIFFERENCE_MINUEND_PLACES=645, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6901, PETRI_PLACES=706, PETRI_TRANSITIONS=559} [2022-07-19 21:29:10,488 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 547 predicate places. [2022-07-19 21:29:10,488 INFO L495 AbstractCegarLoop]: Abstraction has has 706 places, 559 transitions, 6901 flow [2022-07-19 21:29:10,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:10,489 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:10,489 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] [2022-07-19 21:29:10,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-07-19 21:29:10,490 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:29:10,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:10,490 INFO L85 PathProgramCache]: Analyzing trace with hash 920759187, now seen corresponding path program 20 times [2022-07-19 21:29:10,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:10,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730871194] [2022-07-19 21:29:10,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:10,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:11,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:11,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730871194] [2022-07-19 21:29:11,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730871194] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:11,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:11,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-19 21:29:11,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927408998] [2022-07-19 21:29:11,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:11,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:29:11,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:11,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:29:11,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:29:11,025 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-19 21:29:11,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 706 places, 559 transitions, 6901 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:11,027 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:11,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-19 21:29:11,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand