./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-exp-term-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 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:58:24,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:58:24,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:58:24,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:58:24,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:58:24,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:58:24,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:58:24,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:58:24,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:58:24,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:58:24,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:58:24,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:58:24,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:58:24,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:58:24,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:58:24,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:58:24,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:58:24,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:58:24,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:58:24,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:58:24,316 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:58:24,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:58:24,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:58:24,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:58:24,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:58:24,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:58:24,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:58:24,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:58:24,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:58:24,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:58:24,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:58:24,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:58:24,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:58:24,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:58:24,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:58:24,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:58:24,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:58:24,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:58:24,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:58:24,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:58:24,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:58:24,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:58:24,336 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:58:24,363 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:58:24,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:58:24,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:58:24,364 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:58:24,364 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:58:24,365 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:58:24,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:58:24,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:58:24,366 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:58:24,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:58:24,366 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:58:24,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:58:24,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:58:24,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:58:24,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:58:24,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:58:24,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:58:24,367 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:58:24,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:58:24,368 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:58:24,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:58:24,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:58:24,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:58:24,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:58:24,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:58:24,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:58:24,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:58:24,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:58:24,369 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:58:24,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:58:24,370 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:58:24,370 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:58:24,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:58:24,370 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 [2022-07-21 08:58:24,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:58:24,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:58:24,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:58:24,614 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:58:24,614 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:58:24,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2022-07-21 08:58:24,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5241d0d4/b303c4db39c34fab9e9694d094e6368f/FLAG5c96cb0e7 [2022-07-21 08:58:25,031 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:58:25,031 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2022-07-21 08:58:25,037 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5241d0d4/b303c4db39c34fab9e9694d094e6368f/FLAG5c96cb0e7 [2022-07-21 08:58:25,053 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5241d0d4/b303c4db39c34fab9e9694d094e6368f [2022-07-21 08:58:25,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:58:25,056 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:58:25,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:58:25,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:58:25,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:58:25,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:58:25" (1/1) ... [2022-07-21 08:58:25,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca69b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:25, skipping insertion in model container [2022-07-21 08:58:25,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:58:25" (1/1) ... [2022-07-21 08:58:25,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:58:25,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:58:25,224 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-exp-term-symm.wvr.c[2628,2641] [2022-07-21 08:58:25,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:58:25,264 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:58:25,296 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-exp-term-symm.wvr.c[2628,2641] [2022-07-21 08:58:25,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:58:25,308 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:58:25,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:25 WrapperNode [2022-07-21 08:58:25,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:58:25,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:58:25,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:58:25,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:58:25,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:25" (1/1) ... [2022-07-21 08:58:25,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:25" (1/1) ... [2022-07-21 08:58:25,351 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 128 [2022-07-21 08:58:25,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:58:25,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:58:25,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:58:25,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:58:25,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:25" (1/1) ... [2022-07-21 08:58:25,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:25" (1/1) ... [2022-07-21 08:58:25,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:25" (1/1) ... [2022-07-21 08:58:25,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:25" (1/1) ... [2022-07-21 08:58:25,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:25" (1/1) ... [2022-07-21 08:58:25,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:25" (1/1) ... [2022-07-21 08:58:25,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:25" (1/1) ... [2022-07-21 08:58:25,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:58:25,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:58:25,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:58:25,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:58:25,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:25" (1/1) ... [2022-07-21 08:58:25,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:58:25,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:58:25,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:58:25,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:58:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:58:25,459 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 08:58:25,459 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 08:58:25,459 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 08:58:25,459 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 08:58:25,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:58:25,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:58:25,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:58:25,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:58:25,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:58:25,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:58:25,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:58:25,461 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:58:25,516 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:58:25,517 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:58:25,776 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:58:25,782 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:58:25,783 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 08:58:25,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:58:25 BoogieIcfgContainer [2022-07-21 08:58:25,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:58:25,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:58:25,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:58:25,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:58:25,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:58:25" (1/3) ... [2022-07-21 08:58:25,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6137c033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:58:25, skipping insertion in model container [2022-07-21 08:58:25,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:25" (2/3) ... [2022-07-21 08:58:25,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6137c033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:58:25, skipping insertion in model container [2022-07-21 08:58:25,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:58:25" (3/3) ... [2022-07-21 08:58:25,803 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-exp-term-symm.wvr.c [2022-07-21 08:58:25,807 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:58:25,813 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:58:25,813 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:58:25,814 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:58:25,890 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-21 08:58:25,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 168 places, 174 transitions, 364 flow [2022-07-21 08:58:26,001 INFO L129 PetriNetUnfolder]: 13/172 cut-off events. [2022-07-21 08:58:26,004 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:58:26,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 172 events. 13/172 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 283 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-07-21 08:58:26,009 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 174 transitions, 364 flow [2022-07-21 08:58:26,012 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 163 transitions, 338 flow [2022-07-21 08:58:26,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:58:26,029 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@7b38c381, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b306202 [2022-07-21 08:58:26,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-21 08:58:26,047 INFO L129 PetriNetUnfolder]: 13/162 cut-off events. [2022-07-21 08:58:26,054 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:58:26,054 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:26,055 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] [2022-07-21 08:58:26,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:26,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:26,059 INFO L85 PathProgramCache]: Analyzing trace with hash -679452967, now seen corresponding path program 1 times [2022-07-21 08:58:26,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:26,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909854336] [2022-07-21 08:58:26,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:26,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:26,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:26,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909854336] [2022-07-21 08:58:26,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909854336] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:26,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:26,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:58:26,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293585598] [2022-07-21 08:58:26,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:26,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:58:26,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:26,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:58:26,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:58:26,396 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 174 [2022-07-21 08:58:26,403 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 163 transitions, 338 flow. Second operand has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:26,404 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:26,404 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 174 [2022-07-21 08:58:26,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:26,677 INFO L129 PetriNetUnfolder]: 58/423 cut-off events. [2022-07-21 08:58:26,677 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-07-21 08:58:26,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 621 conditions, 423 events. 58/423 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1975 event pairs, 12 based on Foata normal form. 24/419 useless extension candidates. Maximal degree in co-relation 377. Up to 44 conditions per place. [2022-07-21 08:58:26,684 INFO L132 encePairwiseOnDemand]: 154/174 looper letters, 52 selfloop transitions, 10 changer transitions 34/223 dead transitions. [2022-07-21 08:58:26,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 223 transitions, 677 flow [2022-07-21 08:58:26,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:58:26,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-21 08:58:26,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2175 transitions. [2022-07-21 08:58:26,702 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-07-21 08:58:26,703 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2175 transitions. [2022-07-21 08:58:26,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2175 transitions. [2022-07-21 08:58:26,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:26,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2175 transitions. [2022-07-21 08:58:26,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 145.0) internal successors, (2175), 15 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:26,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 174.0) internal successors, (2784), 16 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:26,726 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 174.0) internal successors, (2784), 16 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:26,728 INFO L186 Difference]: Start difference. First operand has 157 places, 163 transitions, 338 flow. Second operand 15 states and 2175 transitions. [2022-07-21 08:58:26,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 223 transitions, 677 flow [2022-07-21 08:58:26,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 223 transitions, 651 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-21 08:58:26,739 INFO L242 Difference]: Finished difference. Result has 177 places, 161 transitions, 389 flow [2022-07-21 08:58:26,740 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=389, PETRI_PLACES=177, PETRI_TRANSITIONS=161} [2022-07-21 08:58:26,744 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 20 predicate places. [2022-07-21 08:58:26,745 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 161 transitions, 389 flow [2022-07-21 08:58:26,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:26,746 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:26,746 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] [2022-07-21 08:58:26,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:58:26,747 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:26,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:26,748 INFO L85 PathProgramCache]: Analyzing trace with hash 429160743, now seen corresponding path program 1 times [2022-07-21 08:58:26,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:26,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440215566] [2022-07-21 08:58:26,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:26,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:26,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:26,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:26,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440215566] [2022-07-21 08:58:26,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440215566] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:26,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:26,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:58:26,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342479999] [2022-07-21 08:58:26,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:26,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:58:26,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:26,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:58:26,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:58:26,863 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-07-21 08:58:26,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 161 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:26,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:26,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-07-21 08:58:26,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:27,041 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([405] L44-17-->L44-18: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite4#1_3|) InVars {thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} AuxVars[] AssignedVars[~result_4~0][53], [26#L50-19true, 44#L44-18true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 108#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 214#(and (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), 171#true]) [2022-07-21 08:58:27,045 INFO L384 tUnfolder$Statistics]: this new event has 77 ancestors and is cut-off event [2022-07-21 08:58:27,045 INFO L387 tUnfolder$Statistics]: existing Event has 75 ancestors and is cut-off event [2022-07-21 08:58:27,045 INFO L387 tUnfolder$Statistics]: existing Event has 99 ancestors and is cut-off event [2022-07-21 08:58:27,045 INFO L387 tUnfolder$Statistics]: existing Event has 73 ancestors and is cut-off event [2022-07-21 08:58:27,046 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][123], [26#L50-19true, 44#L44-18true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 108#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 214#(and (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), 171#true]) [2022-07-21 08:58:27,047 INFO L384 tUnfolder$Statistics]: this new event has 73 ancestors and is not cut-off event [2022-07-21 08:58:27,047 INFO L387 tUnfolder$Statistics]: existing Event has 99 ancestors and is not cut-off event [2022-07-21 08:58:27,047 INFO L387 tUnfolder$Statistics]: existing Event has 75 ancestors and is not cut-off event [2022-07-21 08:58:27,047 INFO L387 tUnfolder$Statistics]: existing Event has 77 ancestors and is not cut-off event [2022-07-21 08:58:27,048 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][123], [26#L50-19true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 108#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), 149#L44-19true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 214#(and (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), 171#true]) [2022-07-21 08:58:27,048 INFO L384 tUnfolder$Statistics]: this new event has 74 ancestors and is not cut-off event [2022-07-21 08:58:27,049 INFO L387 tUnfolder$Statistics]: existing Event has 76 ancestors and is not cut-off event [2022-07-21 08:58:27,049 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is not cut-off event [2022-07-21 08:58:27,049 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is not cut-off event [2022-07-21 08:58:27,064 INFO L129 PetriNetUnfolder]: 101/1203 cut-off events. [2022-07-21 08:58:27,064 INFO L130 PetriNetUnfolder]: For 340/354 co-relation queries the response was YES. [2022-07-21 08:58:27,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 1203 events. 101/1203 cut-off events. For 340/354 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 9165 event pairs, 24 based on Foata normal form. 5/1103 useless extension candidates. Maximal degree in co-relation 1715. Up to 58 conditions per place. [2022-07-21 08:58:27,070 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 35 selfloop transitions, 16 changer transitions 2/194 dead transitions. [2022-07-21 08:58:27,070 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 194 transitions, 570 flow [2022-07-21 08:58:27,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:58:27,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:58:27,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 789 transitions. [2022-07-21 08:58:27,072 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.906896551724138 [2022-07-21 08:58:27,072 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 789 transitions. [2022-07-21 08:58:27,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 789 transitions. [2022-07-21 08:58:27,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:27,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 789 transitions. [2022-07-21 08:58:27,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.8) internal successors, (789), 5 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,076 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,077 INFO L186 Difference]: Start difference. First operand has 177 places, 161 transitions, 389 flow. Second operand 5 states and 789 transitions. [2022-07-21 08:58:27,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 194 transitions, 570 flow [2022-07-21 08:58:27,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 194 transitions, 559 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-07-21 08:58:27,086 INFO L242 Difference]: Finished difference. Result has 170 places, 173 transitions, 498 flow [2022-07-21 08:58:27,086 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=170, PETRI_TRANSITIONS=173} [2022-07-21 08:58:27,087 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 13 predicate places. [2022-07-21 08:58:27,087 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 173 transitions, 498 flow [2022-07-21 08:58:27,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,087 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:27,088 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] [2022-07-21 08:58:27,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:58:27,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:27,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:27,089 INFO L85 PathProgramCache]: Analyzing trace with hash 857239029, now seen corresponding path program 2 times [2022-07-21 08:58:27,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:27,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442646320] [2022-07-21 08:58:27,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:27,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:27,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:27,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442646320] [2022-07-21 08:58:27,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442646320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:27,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:27,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:58:27,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132463026] [2022-07-21 08:58:27,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:27,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:58:27,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:27,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:58:27,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:58:27,202 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-07-21 08:58:27,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 173 transitions, 498 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:27,203 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-07-21 08:58:27,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:27,350 INFO L129 PetriNetUnfolder]: 94/1204 cut-off events. [2022-07-21 08:58:27,350 INFO L130 PetriNetUnfolder]: For 323/339 co-relation queries the response was YES. [2022-07-21 08:58:27,353 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1844 conditions, 1204 events. 94/1204 cut-off events. For 323/339 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 8776 event pairs, 26 based on Foata normal form. 10/1150 useless extension candidates. Maximal degree in co-relation 1605. Up to 78 conditions per place. [2022-07-21 08:58:27,356 INFO L132 encePairwiseOnDemand]: 164/174 looper letters, 43 selfloop transitions, 10 changer transitions 0/194 dead transitions. [2022-07-21 08:58:27,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 194 transitions, 703 flow [2022-07-21 08:58:27,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 08:58:27,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-21 08:58:27,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 625 transitions. [2022-07-21 08:58:27,358 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8979885057471264 [2022-07-21 08:58:27,358 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 625 transitions. [2022-07-21 08:58:27,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 625 transitions. [2022-07-21 08:58:27,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:27,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 625 transitions. [2022-07-21 08:58:27,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.25) internal successors, (625), 4 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,362 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,362 INFO L186 Difference]: Start difference. First operand has 170 places, 173 transitions, 498 flow. Second operand 4 states and 625 transitions. [2022-07-21 08:58:27,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 194 transitions, 703 flow [2022-07-21 08:58:27,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 194 transitions, 699 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-21 08:58:27,369 INFO L242 Difference]: Finished difference. Result has 175 places, 179 transitions, 580 flow [2022-07-21 08:58:27,370 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=580, PETRI_PLACES=175, PETRI_TRANSITIONS=179} [2022-07-21 08:58:27,371 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 18 predicate places. [2022-07-21 08:58:27,372 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 179 transitions, 580 flow [2022-07-21 08:58:27,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,372 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:27,372 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] [2022-07-21 08:58:27,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:58:27,373 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:27,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:27,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1926552705, now seen corresponding path program 3 times [2022-07-21 08:58:27,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:27,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191584219] [2022-07-21 08:58:27,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:27,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:27,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:27,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:27,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191584219] [2022-07-21 08:58:27,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191584219] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:27,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:27,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:58:27,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736734252] [2022-07-21 08:58:27,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:27,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:58:27,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:27,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:58:27,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:58:27,446 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-07-21 08:58:27,446 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 179 transitions, 580 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:27,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-07-21 08:58:27,446 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:27,590 INFO L129 PetriNetUnfolder]: 95/1359 cut-off events. [2022-07-21 08:58:27,592 INFO L130 PetriNetUnfolder]: For 517/526 co-relation queries the response was YES. [2022-07-21 08:58:27,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2111 conditions, 1359 events. 95/1359 cut-off events. For 517/526 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 10439 event pairs, 27 based on Foata normal form. 6/1297 useless extension candidates. Maximal degree in co-relation 1448. Up to 110 conditions per place. [2022-07-21 08:58:27,600 INFO L132 encePairwiseOnDemand]: 163/174 looper letters, 39 selfloop transitions, 14 changer transitions 0/194 dead transitions. [2022-07-21 08:58:27,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 194 transitions, 767 flow [2022-07-21 08:58:27,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 08:58:27,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-21 08:58:27,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2022-07-21 08:58:27,602 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8951149425287356 [2022-07-21 08:58:27,604 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2022-07-21 08:58:27,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2022-07-21 08:58:27,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:27,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2022-07-21 08:58:27,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,607 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,607 INFO L186 Difference]: Start difference. First operand has 175 places, 179 transitions, 580 flow. Second operand 4 states and 623 transitions. [2022-07-21 08:58:27,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 194 transitions, 767 flow [2022-07-21 08:58:27,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 194 transitions, 767 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:58:27,613 INFO L242 Difference]: Finished difference. Result has 180 places, 186 transitions, 698 flow [2022-07-21 08:58:27,614 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=698, PETRI_PLACES=180, PETRI_TRANSITIONS=186} [2022-07-21 08:58:27,615 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 23 predicate places. [2022-07-21 08:58:27,615 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 186 transitions, 698 flow [2022-07-21 08:58:27,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,615 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:27,616 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] [2022-07-21 08:58:27,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:58:27,616 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:27,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:27,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1582955703, now seen corresponding path program 1 times [2022-07-21 08:58:27,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:27,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460597609] [2022-07-21 08:58:27,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:27,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:27,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:27,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:27,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460597609] [2022-07-21 08:58:27,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460597609] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:27,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:27,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:58:27,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133754620] [2022-07-21 08:58:27,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:27,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:58:27,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:27,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:58:27,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:58:27,725 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-07-21 08:58:27,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 186 transitions, 698 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:27,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-07-21 08:58:27,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:27,842 INFO L129 PetriNetUnfolder]: 76/1138 cut-off events. [2022-07-21 08:58:27,842 INFO L130 PetriNetUnfolder]: For 593/602 co-relation queries the response was YES. [2022-07-21 08:58:27,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1858 conditions, 1138 events. 76/1138 cut-off events. For 593/602 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7914 event pairs, 23 based on Foata normal form. 9/1088 useless extension candidates. Maximal degree in co-relation 1311. Up to 98 conditions per place. [2022-07-21 08:58:27,848 INFO L132 encePairwiseOnDemand]: 162/174 looper letters, 42 selfloop transitions, 15 changer transitions 0/198 dead transitions. [2022-07-21 08:58:27,848 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 198 transitions, 879 flow [2022-07-21 08:58:27,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 08:58:27,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-21 08:58:27,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2022-07-21 08:58:27,850 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8951149425287356 [2022-07-21 08:58:27,850 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2022-07-21 08:58:27,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2022-07-21 08:58:27,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:27,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2022-07-21 08:58:27,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,853 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,853 INFO L186 Difference]: Start difference. First operand has 180 places, 186 transitions, 698 flow. Second operand 4 states and 623 transitions. [2022-07-21 08:58:27,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 198 transitions, 879 flow [2022-07-21 08:58:27,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 198 transitions, 862 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:58:27,859 INFO L242 Difference]: Finished difference. Result has 183 places, 190 transitions, 782 flow [2022-07-21 08:58:27,859 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=782, PETRI_PLACES=183, PETRI_TRANSITIONS=190} [2022-07-21 08:58:27,860 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 26 predicate places. [2022-07-21 08:58:27,860 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 190 transitions, 782 flow [2022-07-21 08:58:27,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,860 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:27,860 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] [2022-07-21 08:58:27,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:58:27,861 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:27,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:27,861 INFO L85 PathProgramCache]: Analyzing trace with hash -758953314, now seen corresponding path program 1 times [2022-07-21 08:58:27,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:27,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053938285] [2022-07-21 08:58:27,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:27,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:27,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:27,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:27,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053938285] [2022-07-21 08:58:27,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053938285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:27,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:27,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:27,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293249592] [2022-07-21 08:58:27,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:27,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:27,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:27,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:27,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:27,967 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:27,968 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 190 transitions, 782 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,968 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:27,968 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:27,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:28,470 INFO L129 PetriNetUnfolder]: 334/1697 cut-off events. [2022-07-21 08:58:28,470 INFO L130 PetriNetUnfolder]: For 868/930 co-relation queries the response was YES. [2022-07-21 08:58:28,474 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3363 conditions, 1697 events. 334/1697 cut-off events. For 868/930 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 12792 event pairs, 168 based on Foata normal form. 3/1614 useless extension candidates. Maximal degree in co-relation 1977. Up to 609 conditions per place. [2022-07-21 08:58:28,478 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 98 selfloop transitions, 5 changer transitions 48/296 dead transitions. [2022-07-21 08:58:28,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 296 transitions, 1407 flow [2022-07-21 08:58:28,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-21 08:58:28,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-21 08:58:28,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3982 transitions. [2022-07-21 08:58:28,484 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7628352490421456 [2022-07-21 08:58:28,485 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3982 transitions. [2022-07-21 08:58:28,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3982 transitions. [2022-07-21 08:58:28,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:28,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3982 transitions. [2022-07-21 08:58:28,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 132.73333333333332) internal successors, (3982), 30 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:28,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:28,499 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:28,499 INFO L186 Difference]: Start difference. First operand has 183 places, 190 transitions, 782 flow. Second operand 30 states and 3982 transitions. [2022-07-21 08:58:28,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 296 transitions, 1407 flow [2022-07-21 08:58:28,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 296 transitions, 1391 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:58:28,506 INFO L242 Difference]: Finished difference. Result has 238 places, 192 transitions, 881 flow [2022-07-21 08:58:28,507 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=881, PETRI_PLACES=238, PETRI_TRANSITIONS=192} [2022-07-21 08:58:28,507 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 81 predicate places. [2022-07-21 08:58:28,507 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 192 transitions, 881 flow [2022-07-21 08:58:28,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:28,508 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:28,508 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] [2022-07-21 08:58:28,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:58:28,509 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:28,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:28,509 INFO L85 PathProgramCache]: Analyzing trace with hash 2048181902, now seen corresponding path program 1 times [2022-07-21 08:58:28,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:28,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334144486] [2022-07-21 08:58:28,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:28,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:28,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:28,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334144486] [2022-07-21 08:58:28,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334144486] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:28,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:28,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:28,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23378168] [2022-07-21 08:58:28,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:28,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:28,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:28,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:28,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:28,620 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:28,621 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 192 transitions, 881 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:28,621 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:28,621 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:28,621 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:29,141 INFO L129 PetriNetUnfolder]: 406/1882 cut-off events. [2022-07-21 08:58:29,142 INFO L130 PetriNetUnfolder]: For 7656/7759 co-relation queries the response was YES. [2022-07-21 08:58:29,150 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6197 conditions, 1882 events. 406/1882 cut-off events. For 7656/7759 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 14174 event pairs, 254 based on Foata normal form. 3/1799 useless extension candidates. Maximal degree in co-relation 5988. Up to 719 conditions per place. [2022-07-21 08:58:29,157 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 79 selfloop transitions, 17 changer transitions 40/281 dead transitions. [2022-07-21 08:58:29,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 281 transitions, 1986 flow [2022-07-21 08:58:29,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 08:58:29,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-21 08:58:29,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3453 transitions. [2022-07-21 08:58:29,163 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.763262599469496 [2022-07-21 08:58:29,163 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3453 transitions. [2022-07-21 08:58:29,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3453 transitions. [2022-07-21 08:58:29,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:29,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3453 transitions. [2022-07-21 08:58:29,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.80769230769232) internal successors, (3453), 26 states have internal predecessors, (3453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:29,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:29,176 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:29,176 INFO L186 Difference]: Start difference. First operand has 238 places, 192 transitions, 881 flow. Second operand 26 states and 3453 transitions. [2022-07-21 08:58:29,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 281 transitions, 1986 flow [2022-07-21 08:58:29,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 281 transitions, 1793 flow, removed 96 selfloop flow, removed 13 redundant places. [2022-07-21 08:58:29,202 INFO L242 Difference]: Finished difference. Result has 246 places, 209 transitions, 1078 flow [2022-07-21 08:58:29,202 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1078, PETRI_PLACES=246, PETRI_TRANSITIONS=209} [2022-07-21 08:58:29,203 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 89 predicate places. [2022-07-21 08:58:29,203 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 209 transitions, 1078 flow [2022-07-21 08:58:29,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:29,203 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:29,204 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:29,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:58:29,204 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:29,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:29,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1358766246, now seen corresponding path program 2 times [2022-07-21 08:58:29,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:29,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579658746] [2022-07-21 08:58:29,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:29,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:29,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:29,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:29,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579658746] [2022-07-21 08:58:29,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579658746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:29,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:29,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:29,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046922219] [2022-07-21 08:58:29,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:29,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:29,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:29,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:29,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:29,343 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:29,344 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 209 transitions, 1078 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:29,344 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:29,344 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:29,344 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:29,973 INFO L129 PetriNetUnfolder]: 408/1983 cut-off events. [2022-07-21 08:58:29,973 INFO L130 PetriNetUnfolder]: For 13337/13438 co-relation queries the response was YES. [2022-07-21 08:58:29,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7401 conditions, 1983 events. 408/1983 cut-off events. For 13337/13438 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 15299 event pairs, 214 based on Foata normal form. 3/1905 useless extension candidates. Maximal degree in co-relation 7239. Up to 669 conditions per place. [2022-07-21 08:58:29,988 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 117 selfloop transitions, 14 changer transitions 48/324 dead transitions. [2022-07-21 08:58:29,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 324 transitions, 2614 flow [2022-07-21 08:58:29,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 08:58:29,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-21 08:58:29,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4117 transitions. [2022-07-21 08:58:29,994 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7632554690396737 [2022-07-21 08:58:29,995 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4117 transitions. [2022-07-21 08:58:29,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4117 transitions. [2022-07-21 08:58:29,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:29,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4117 transitions. [2022-07-21 08:58:30,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 132.80645161290323) internal successors, (4117), 31 states have internal predecessors, (4117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:30,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:30,010 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:30,010 INFO L186 Difference]: Start difference. First operand has 246 places, 209 transitions, 1078 flow. Second operand 31 states and 4117 transitions. [2022-07-21 08:58:30,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 324 transitions, 2614 flow [2022-07-21 08:58:30,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 324 transitions, 2194 flow, removed 210 selfloop flow, removed 15 redundant places. [2022-07-21 08:58:30,035 INFO L242 Difference]: Finished difference. Result has 273 places, 214 transitions, 1169 flow [2022-07-21 08:58:30,035 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=984, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1169, PETRI_PLACES=273, PETRI_TRANSITIONS=214} [2022-07-21 08:58:30,036 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 116 predicate places. [2022-07-21 08:58:30,036 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 214 transitions, 1169 flow [2022-07-21 08:58:30,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:30,037 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:30,037 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] [2022-07-21 08:58:30,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:58:30,037 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:30,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:30,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1511718624, now seen corresponding path program 3 times [2022-07-21 08:58:30,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:30,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765194367] [2022-07-21 08:58:30,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:30,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:30,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:30,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:30,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765194367] [2022-07-21 08:58:30,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765194367] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:30,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:30,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:30,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471337423] [2022-07-21 08:58:30,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:30,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:30,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:30,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:30,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:30,144 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:30,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 214 transitions, 1169 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:30,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:30,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:30,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:30,653 INFO L129 PetriNetUnfolder]: 399/1880 cut-off events. [2022-07-21 08:58:30,653 INFO L130 PetriNetUnfolder]: For 14920/15031 co-relation queries the response was YES. [2022-07-21 08:58:30,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7687 conditions, 1880 events. 399/1880 cut-off events. For 14920/15031 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 14199 event pairs, 239 based on Foata normal form. 6/1797 useless extension candidates. Maximal degree in co-relation 7511. Up to 755 conditions per place. [2022-07-21 08:58:30,670 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 84 selfloop transitions, 18 changer transitions 33/280 dead transitions. [2022-07-21 08:58:30,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 280 transitions, 2353 flow [2022-07-21 08:58:30,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 08:58:30,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 08:58:30,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2925 transitions. [2022-07-21 08:58:30,675 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7641065830721003 [2022-07-21 08:58:30,675 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2925 transitions. [2022-07-21 08:58:30,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2925 transitions. [2022-07-21 08:58:30,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:30,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2925 transitions. [2022-07-21 08:58:30,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.95454545454547) internal successors, (2925), 22 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:30,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:30,686 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:30,686 INFO L186 Difference]: Start difference. First operand has 273 places, 214 transitions, 1169 flow. Second operand 22 states and 2925 transitions. [2022-07-21 08:58:30,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 280 transitions, 2353 flow [2022-07-21 08:58:30,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 280 transitions, 2040 flow, removed 156 selfloop flow, removed 22 redundant places. [2022-07-21 08:58:30,723 INFO L242 Difference]: Finished difference. Result has 267 places, 224 transitions, 1335 flow [2022-07-21 08:58:30,723 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1335, PETRI_PLACES=267, PETRI_TRANSITIONS=224} [2022-07-21 08:58:30,724 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 110 predicate places. [2022-07-21 08:58:30,724 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 224 transitions, 1335 flow [2022-07-21 08:58:30,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:30,725 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:30,725 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] [2022-07-21 08:58:30,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:58:30,725 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:30,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:30,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1794699346, now seen corresponding path program 4 times [2022-07-21 08:58:30,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:30,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191407357] [2022-07-21 08:58:30,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:30,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:30,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:30,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:30,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191407357] [2022-07-21 08:58:30,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191407357] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:30,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:30,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:30,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33603002] [2022-07-21 08:58:30,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:30,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:30,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:30,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:30,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:30,881 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:30,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 224 transitions, 1335 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:30,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:30,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:30,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:31,384 INFO L129 PetriNetUnfolder]: 430/1981 cut-off events. [2022-07-21 08:58:31,385 INFO L130 PetriNetUnfolder]: For 10876/10996 co-relation queries the response was YES. [2022-07-21 08:58:31,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7499 conditions, 1981 events. 430/1981 cut-off events. For 10876/10996 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 15140 event pairs, 284 based on Foata normal form. 4/1895 useless extension candidates. Maximal degree in co-relation 7412. Up to 817 conditions per place. [2022-07-21 08:58:31,403 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 26 changer transitions 40/311 dead transitions. [2022-07-21 08:58:31,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 311 transitions, 2684 flow [2022-07-21 08:58:31,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-21 08:58:31,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-07-21 08:58:31,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3320 transitions. [2022-07-21 08:58:31,406 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7632183908045977 [2022-07-21 08:58:31,406 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3320 transitions. [2022-07-21 08:58:31,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3320 transitions. [2022-07-21 08:58:31,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:31,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3320 transitions. [2022-07-21 08:58:31,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 132.8) internal successors, (3320), 25 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:31,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:31,415 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:31,415 INFO L186 Difference]: Start difference. First operand has 267 places, 224 transitions, 1335 flow. Second operand 25 states and 3320 transitions. [2022-07-21 08:58:31,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 311 transitions, 2684 flow [2022-07-21 08:58:31,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 311 transitions, 2423 flow, removed 113 selfloop flow, removed 12 redundant places. [2022-07-21 08:58:31,450 INFO L242 Difference]: Finished difference. Result has 288 places, 239 transitions, 1519 flow [2022-07-21 08:58:31,451 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1519, PETRI_PLACES=288, PETRI_TRANSITIONS=239} [2022-07-21 08:58:31,451 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 131 predicate places. [2022-07-21 08:58:31,452 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 239 transitions, 1519 flow [2022-07-21 08:58:31,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:31,452 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:31,452 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] [2022-07-21 08:58:31,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:58:31,466 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:31,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:31,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1292765374, now seen corresponding path program 5 times [2022-07-21 08:58:31,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:31,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011144422] [2022-07-21 08:58:31,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:31,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:31,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:31,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:31,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011144422] [2022-07-21 08:58:31,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011144422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:31,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:31,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:31,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756628036] [2022-07-21 08:58:31,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:31,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:31,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:31,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:31,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:31,562 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:31,563 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 239 transitions, 1519 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:31,563 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:31,563 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:31,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:32,142 INFO L129 PetriNetUnfolder]: 428/2036 cut-off events. [2022-07-21 08:58:32,142 INFO L130 PetriNetUnfolder]: For 16701/16827 co-relation queries the response was YES. [2022-07-21 08:58:32,158 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8579 conditions, 2036 events. 428/2036 cut-off events. For 16701/16827 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15779 event pairs, 255 based on Foata normal form. 3/1954 useless extension candidates. Maximal degree in co-relation 8451. Up to 753 conditions per place. [2022-07-21 08:58:32,166 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 173 selfloop transitions, 25 changer transitions 54/397 dead transitions. [2022-07-21 08:58:32,166 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 397 transitions, 3928 flow [2022-07-21 08:58:32,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-21 08:58:32,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-21 08:58:32,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3981 transitions. [2022-07-21 08:58:32,171 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7626436781609195 [2022-07-21 08:58:32,171 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3981 transitions. [2022-07-21 08:58:32,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3981 transitions. [2022-07-21 08:58:32,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:32,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3981 transitions. [2022-07-21 08:58:32,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 132.7) internal successors, (3981), 30 states have internal predecessors, (3981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:32,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:32,183 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:32,183 INFO L186 Difference]: Start difference. First operand has 288 places, 239 transitions, 1519 flow. Second operand 30 states and 3981 transitions. [2022-07-21 08:58:32,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 397 transitions, 3928 flow [2022-07-21 08:58:32,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 397 transitions, 3536 flow, removed 196 selfloop flow, removed 13 redundant places. [2022-07-21 08:58:32,311 INFO L242 Difference]: Finished difference. Result has 316 places, 242 transitions, 1626 flow [2022-07-21 08:58:32,312 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1626, PETRI_PLACES=316, PETRI_TRANSITIONS=242} [2022-07-21 08:58:32,312 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 159 predicate places. [2022-07-21 08:58:32,312 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 242 transitions, 1626 flow [2022-07-21 08:58:32,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:32,313 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:32,313 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] [2022-07-21 08:58:32,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:58:32,313 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:32,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:32,314 INFO L85 PathProgramCache]: Analyzing trace with hash 10274408, now seen corresponding path program 6 times [2022-07-21 08:58:32,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:32,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818443790] [2022-07-21 08:58:32,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:32,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:32,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:32,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:32,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818443790] [2022-07-21 08:58:32,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818443790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:32,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:32,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:32,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005504936] [2022-07-21 08:58:32,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:32,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:32,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:32,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:32,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:32,404 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:32,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 242 transitions, 1626 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:32,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:32,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:32,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:33,120 INFO L129 PetriNetUnfolder]: 443/2076 cut-off events. [2022-07-21 08:58:33,120 INFO L130 PetriNetUnfolder]: For 19227/19353 co-relation queries the response was YES. [2022-07-21 08:58:33,132 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9066 conditions, 2076 events. 443/2076 cut-off events. For 19227/19353 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 16097 event pairs, 282 based on Foata normal form. 9/1993 useless extension candidates. Maximal degree in co-relation 8864. Up to 849 conditions per place. [2022-07-21 08:58:33,138 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 116 selfloop transitions, 35 changer transitions 41/337 dead transitions. [2022-07-21 08:58:33,138 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 337 transitions, 3306 flow [2022-07-21 08:58:33,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 08:58:33,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-21 08:58:33,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3708 transitions. [2022-07-21 08:58:33,142 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7610837438423645 [2022-07-21 08:58:33,142 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3708 transitions. [2022-07-21 08:58:33,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3708 transitions. [2022-07-21 08:58:33,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:33,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3708 transitions. [2022-07-21 08:58:33,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.42857142857142) internal successors, (3708), 28 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:33,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:33,152 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:33,152 INFO L186 Difference]: Start difference. First operand has 316 places, 242 transitions, 1626 flow. Second operand 28 states and 3708 transitions. [2022-07-21 08:58:33,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 337 transitions, 3306 flow [2022-07-21 08:58:33,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 337 transitions, 3138 flow, removed 82 selfloop flow, removed 21 redundant places. [2022-07-21 08:58:33,207 INFO L242 Difference]: Finished difference. Result has 318 places, 255 transitions, 1896 flow [2022-07-21 08:58:33,207 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1561, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1896, PETRI_PLACES=318, PETRI_TRANSITIONS=255} [2022-07-21 08:58:33,208 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 161 predicate places. [2022-07-21 08:58:33,208 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 255 transitions, 1896 flow [2022-07-21 08:58:33,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:33,208 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:33,209 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] [2022-07-21 08:58:33,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:58:33,209 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:33,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:33,209 INFO L85 PathProgramCache]: Analyzing trace with hash 624347520, now seen corresponding path program 7 times [2022-07-21 08:58:33,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:33,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146906912] [2022-07-21 08:58:33,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:33,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:33,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:33,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:33,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146906912] [2022-07-21 08:58:33,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146906912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:33,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:33,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:33,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251351898] [2022-07-21 08:58:33,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:33,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:33,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:33,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:33,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:33,293 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:33,294 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 255 transitions, 1896 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:33,294 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:33,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:33,294 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:33,885 INFO L129 PetriNetUnfolder]: 440/2094 cut-off events. [2022-07-21 08:58:33,885 INFO L130 PetriNetUnfolder]: For 16923/17049 co-relation queries the response was YES. [2022-07-21 08:58:33,897 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9029 conditions, 2094 events. 440/2094 cut-off events. For 16923/17049 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 16388 event pairs, 289 based on Foata normal form. 6/2001 useless extension candidates. Maximal degree in co-relation 8898. Up to 860 conditions per place. [2022-07-21 08:58:33,902 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 121 selfloop transitions, 36 changer transitions 45/347 dead transitions. [2022-07-21 08:58:33,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 347 transitions, 3673 flow [2022-07-21 08:58:33,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 08:58:33,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-21 08:58:33,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3447 transitions. [2022-07-21 08:58:33,905 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7619363395225465 [2022-07-21 08:58:33,906 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3447 transitions. [2022-07-21 08:58:33,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3447 transitions. [2022-07-21 08:58:33,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:33,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3447 transitions. [2022-07-21 08:58:33,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.57692307692307) internal successors, (3447), 26 states have internal predecessors, (3447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:33,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:33,914 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:33,914 INFO L186 Difference]: Start difference. First operand has 318 places, 255 transitions, 1896 flow. Second operand 26 states and 3447 transitions. [2022-07-21 08:58:33,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 347 transitions, 3673 flow [2022-07-21 08:58:33,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 347 transitions, 3492 flow, removed 82 selfloop flow, removed 16 redundant places. [2022-07-21 08:58:33,962 INFO L242 Difference]: Finished difference. Result has 330 places, 266 transitions, 2143 flow [2022-07-21 08:58:33,963 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1823, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2143, PETRI_PLACES=330, PETRI_TRANSITIONS=266} [2022-07-21 08:58:33,963 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 173 predicate places. [2022-07-21 08:58:33,963 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 266 transitions, 2143 flow [2022-07-21 08:58:33,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:33,964 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:33,964 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] [2022-07-21 08:58:33,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:58:33,964 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:33,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:33,965 INFO L85 PathProgramCache]: Analyzing trace with hash 918863826, now seen corresponding path program 8 times [2022-07-21 08:58:33,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:33,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968353164] [2022-07-21 08:58:33,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:33,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:34,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:34,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:34,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968353164] [2022-07-21 08:58:34,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968353164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:34,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:34,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:34,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257209238] [2022-07-21 08:58:34,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:34,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:34,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:34,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:34,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:34,050 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:34,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 266 transitions, 2143 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:34,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:34,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:34,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:34,684 INFO L129 PetriNetUnfolder]: 433/2073 cut-off events. [2022-07-21 08:58:34,684 INFO L130 PetriNetUnfolder]: For 16989/17111 co-relation queries the response was YES. [2022-07-21 08:58:34,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8985 conditions, 2073 events. 433/2073 cut-off events. For 16989/17111 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 16164 event pairs, 285 based on Foata normal form. 9/1988 useless extension candidates. Maximal degree in co-relation 8766. Up to 852 conditions per place. [2022-07-21 08:58:34,704 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 119 selfloop transitions, 45 changer transitions 33/342 dead transitions. [2022-07-21 08:58:34,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 342 transitions, 3678 flow [2022-07-21 08:58:34,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 08:58:34,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 08:58:34,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2923 transitions. [2022-07-21 08:58:34,708 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7635841170323929 [2022-07-21 08:58:34,708 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2923 transitions. [2022-07-21 08:58:34,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2923 transitions. [2022-07-21 08:58:34,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:34,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2923 transitions. [2022-07-21 08:58:34,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.86363636363637) internal successors, (2923), 22 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:34,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:34,716 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:34,716 INFO L186 Difference]: Start difference. First operand has 330 places, 266 transitions, 2143 flow. Second operand 22 states and 2923 transitions. [2022-07-21 08:58:34,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 342 transitions, 3678 flow [2022-07-21 08:58:34,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 342 transitions, 3502 flow, removed 77 selfloop flow, removed 17 redundant places. [2022-07-21 08:58:34,781 INFO L242 Difference]: Finished difference. Result has 327 places, 273 transitions, 2332 flow [2022-07-21 08:58:34,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2064, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2332, PETRI_PLACES=327, PETRI_TRANSITIONS=273} [2022-07-21 08:58:34,782 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 170 predicate places. [2022-07-21 08:58:34,782 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 273 transitions, 2332 flow [2022-07-21 08:58:34,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:34,783 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:34,783 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] [2022-07-21 08:58:34,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:58:34,783 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:34,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:34,784 INFO L85 PathProgramCache]: Analyzing trace with hash -169181728, now seen corresponding path program 9 times [2022-07-21 08:58:34,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:34,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062401751] [2022-07-21 08:58:34,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:34,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:34,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:34,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062401751] [2022-07-21 08:58:34,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062401751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:34,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:34,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:34,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332002463] [2022-07-21 08:58:34,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:34,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:34,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:34,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:34,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:34,861 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:34,862 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 273 transitions, 2332 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:34,862 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:34,862 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:34,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:35,517 INFO L129 PetriNetUnfolder]: 432/2071 cut-off events. [2022-07-21 08:58:35,517 INFO L130 PetriNetUnfolder]: For 15589/15714 co-relation queries the response was YES. [2022-07-21 08:58:35,534 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8927 conditions, 2071 events. 432/2071 cut-off events. For 15589/15714 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 16137 event pairs, 282 based on Foata normal form. 10/1989 useless extension candidates. Maximal degree in co-relation 8713. Up to 842 conditions per place. [2022-07-21 08:58:35,542 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 123 selfloop transitions, 38 changer transitions 45/351 dead transitions. [2022-07-21 08:58:35,542 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 351 transitions, 3986 flow [2022-07-21 08:58:35,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-21 08:58:35,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-21 08:58:35,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3581 transitions. [2022-07-21 08:58:35,547 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7622392507449979 [2022-07-21 08:58:35,547 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3581 transitions. [2022-07-21 08:58:35,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3581 transitions. [2022-07-21 08:58:35,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:35,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3581 transitions. [2022-07-21 08:58:35,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.62962962962962) internal successors, (3581), 27 states have internal predecessors, (3581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:35,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:35,559 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:35,559 INFO L186 Difference]: Start difference. First operand has 327 places, 273 transitions, 2332 flow. Second operand 27 states and 3581 transitions. [2022-07-21 08:58:35,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 351 transitions, 3986 flow [2022-07-21 08:58:35,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 351 transitions, 3866 flow, removed 51 selfloop flow, removed 7 redundant places. [2022-07-21 08:58:35,628 INFO L242 Difference]: Finished difference. Result has 354 places, 276 transitions, 2485 flow [2022-07-21 08:58:35,628 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2256, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2485, PETRI_PLACES=354, PETRI_TRANSITIONS=276} [2022-07-21 08:58:35,629 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 197 predicate places. [2022-07-21 08:58:35,629 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 276 transitions, 2485 flow [2022-07-21 08:58:35,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:35,629 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:35,630 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] [2022-07-21 08:58:35,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:58:35,630 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:35,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:35,630 INFO L85 PathProgramCache]: Analyzing trace with hash -2095242120, now seen corresponding path program 10 times [2022-07-21 08:58:35,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:35,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229196380] [2022-07-21 08:58:35,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:35,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:35,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:35,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:35,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229196380] [2022-07-21 08:58:35,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229196380] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:35,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:35,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:35,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806070545] [2022-07-21 08:58:35,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:35,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:35,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:35,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:35,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:35,742 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:35,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 276 transitions, 2485 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:35,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:35,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:35,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:36,260 INFO L129 PetriNetUnfolder]: 415/2059 cut-off events. [2022-07-21 08:58:36,260 INFO L130 PetriNetUnfolder]: For 16961/17080 co-relation queries the response was YES. [2022-07-21 08:58:36,277 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8806 conditions, 2059 events. 415/2059 cut-off events. For 16961/17080 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 16078 event pairs, 282 based on Foata normal form. 10/1978 useless extension candidates. Maximal degree in co-relation 8650. Up to 844 conditions per place. [2022-07-21 08:58:36,283 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 116 selfloop transitions, 29 changer transitions 38/328 dead transitions. [2022-07-21 08:58:36,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 328 transitions, 3581 flow [2022-07-21 08:58:36,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 08:58:36,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 08:58:36,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2400 transitions. [2022-07-21 08:58:36,287 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7662835249042146 [2022-07-21 08:58:36,287 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2400 transitions. [2022-07-21 08:58:36,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2400 transitions. [2022-07-21 08:58:36,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:36,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2400 transitions. [2022-07-21 08:58:36,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.33333333333334) internal successors, (2400), 18 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:36,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 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) [2022-07-21 08:58:36,292 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 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) [2022-07-21 08:58:36,293 INFO L186 Difference]: Start difference. First operand has 354 places, 276 transitions, 2485 flow. Second operand 18 states and 2400 transitions. [2022-07-21 08:58:36,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 328 transitions, 3581 flow [2022-07-21 08:58:36,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 328 transitions, 3380 flow, removed 69 selfloop flow, removed 19 redundant places. [2022-07-21 08:58:36,364 INFO L242 Difference]: Finished difference. Result has 340 places, 256 transitions, 2052 flow [2022-07-21 08:58:36,364 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2338, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2052, PETRI_PLACES=340, PETRI_TRANSITIONS=256} [2022-07-21 08:58:36,364 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 183 predicate places. [2022-07-21 08:58:36,364 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 256 transitions, 2052 flow [2022-07-21 08:58:36,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:36,365 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:36,365 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] [2022-07-21 08:58:36,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:58:36,365 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:36,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:36,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1849615134, now seen corresponding path program 11 times [2022-07-21 08:58:36,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:36,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500293469] [2022-07-21 08:58:36,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:36,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:36,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:36,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:36,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500293469] [2022-07-21 08:58:36,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500293469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:36,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:36,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:36,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508734671] [2022-07-21 08:58:36,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:36,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:36,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:36,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:36,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:36,448 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:36,449 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 256 transitions, 2052 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:36,449 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:36,449 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:36,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:36,985 INFO L129 PetriNetUnfolder]: 419/2020 cut-off events. [2022-07-21 08:58:36,985 INFO L130 PetriNetUnfolder]: For 14988/15113 co-relation queries the response was YES. [2022-07-21 08:58:37,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8649 conditions, 2020 events. 419/2020 cut-off events. For 14988/15113 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15585 event pairs, 286 based on Foata normal form. 10/1936 useless extension candidates. Maximal degree in co-relation 8554. Up to 844 conditions per place. [2022-07-21 08:58:37,008 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 106 selfloop transitions, 36 changer transitions 30/317 dead transitions. [2022-07-21 08:58:37,008 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 317 transitions, 3313 flow [2022-07-21 08:58:37,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:58:37,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:58:37,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2022-07-21 08:58:37,018 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2022-07-21 08:58:37,018 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2022-07-21 08:58:37,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2022-07-21 08:58:37,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:37,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2022-07-21 08:58:37,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,024 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,025 INFO L186 Difference]: Start difference. First operand has 340 places, 256 transitions, 2052 flow. Second operand 20 states and 2663 transitions. [2022-07-21 08:58:37,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 317 transitions, 3313 flow [2022-07-21 08:58:37,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 317 transitions, 3066 flow, removed 29 selfloop flow, removed 22 redundant places. [2022-07-21 08:58:37,089 INFO L242 Difference]: Finished difference. Result has 322 places, 265 transitions, 2178 flow [2022-07-21 08:58:37,089 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1894, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2178, PETRI_PLACES=322, PETRI_TRANSITIONS=265} [2022-07-21 08:58:37,090 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 165 predicate places. [2022-07-21 08:58:37,090 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 265 transitions, 2178 flow [2022-07-21 08:58:37,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,090 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:37,090 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] [2022-07-21 08:58:37,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:58:37,091 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:37,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:37,091 INFO L85 PathProgramCache]: Analyzing trace with hash -461714984, now seen corresponding path program 12 times [2022-07-21 08:58:37,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:37,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419497296] [2022-07-21 08:58:37,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:37,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:37,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:37,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:37,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419497296] [2022-07-21 08:58:37,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419497296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:37,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:37,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:37,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611805039] [2022-07-21 08:58:37,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:37,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:37,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:37,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:37,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:37,182 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:37,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 265 transitions, 2178 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:37,183 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:37,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:37,732 INFO L129 PetriNetUnfolder]: 416/2128 cut-off events. [2022-07-21 08:58:37,732 INFO L130 PetriNetUnfolder]: For 14485/14589 co-relation queries the response was YES. [2022-07-21 08:58:37,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8570 conditions, 2128 events. 416/2128 cut-off events. For 14485/14589 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 16824 event pairs, 294 based on Foata normal form. 4/2038 useless extension candidates. Maximal degree in co-relation 8480. Up to 842 conditions per place. [2022-07-21 08:58:37,752 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 37 changer transitions 31/320 dead transitions. [2022-07-21 08:58:37,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 320 transitions, 3311 flow [2022-07-21 08:58:37,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 08:58:37,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-21 08:58:37,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2534 transitions. [2022-07-21 08:58:37,755 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7664851784633999 [2022-07-21 08:58:37,755 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2534 transitions. [2022-07-21 08:58:37,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2534 transitions. [2022-07-21 08:58:37,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:37,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2534 transitions. [2022-07-21 08:58:37,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.3684210526316) internal successors, (2534), 19 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,761 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,761 INFO L186 Difference]: Start difference. First operand has 322 places, 265 transitions, 2178 flow. Second operand 19 states and 2534 transitions. [2022-07-21 08:58:37,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 320 transitions, 3311 flow [2022-07-21 08:58:37,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 320 transitions, 3188 flow, removed 41 selfloop flow, removed 6 redundant places. [2022-07-21 08:58:37,816 INFO L242 Difference]: Finished difference. Result has 333 places, 268 transitions, 2264 flow [2022-07-21 08:58:37,817 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2090, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2264, PETRI_PLACES=333, PETRI_TRANSITIONS=268} [2022-07-21 08:58:37,817 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 176 predicate places. [2022-07-21 08:58:37,817 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 268 transitions, 2264 flow [2022-07-21 08:58:37,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,818 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:37,818 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] [2022-07-21 08:58:37,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:58:37,818 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:37,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:37,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1477349244, now seen corresponding path program 13 times [2022-07-21 08:58:37,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:37,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310768633] [2022-07-21 08:58:37,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:37,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:37,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:37,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:37,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310768633] [2022-07-21 08:58:37,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310768633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:37,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:37,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:37,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298114115] [2022-07-21 08:58:37,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:37,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:37,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:37,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:37,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:37,919 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:37,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 268 transitions, 2264 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:37,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:37,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:38,437 INFO L129 PetriNetUnfolder]: 413/2006 cut-off events. [2022-07-21 08:58:38,437 INFO L130 PetriNetUnfolder]: For 13931/14053 co-relation queries the response was YES. [2022-07-21 08:58:38,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8373 conditions, 2006 events. 413/2006 cut-off events. For 13931/14053 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15534 event pairs, 283 based on Foata normal form. 9/1920 useless extension candidates. Maximal degree in co-relation 8278. Up to 842 conditions per place. [2022-07-21 08:58:38,456 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 106 selfloop transitions, 28 changer transitions 40/319 dead transitions. [2022-07-21 08:58:38,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 319 transitions, 3274 flow [2022-07-21 08:58:38,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 08:58:38,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 08:58:38,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2921 transitions. [2022-07-21 08:58:38,465 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7630616509926855 [2022-07-21 08:58:38,465 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2921 transitions. [2022-07-21 08:58:38,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2921 transitions. [2022-07-21 08:58:38,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:38,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2921 transitions. [2022-07-21 08:58:38,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.77272727272728) internal successors, (2921), 22 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,471 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,471 INFO L186 Difference]: Start difference. First operand has 333 places, 268 transitions, 2264 flow. Second operand 22 states and 2921 transitions. [2022-07-21 08:58:38,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 319 transitions, 3274 flow [2022-07-21 08:58:38,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 319 transitions, 3135 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-07-21 08:58:38,531 INFO L242 Difference]: Finished difference. Result has 347 places, 259 transitions, 2067 flow [2022-07-21 08:58:38,532 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2159, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2067, PETRI_PLACES=347, PETRI_TRANSITIONS=259} [2022-07-21 08:58:38,532 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 190 predicate places. [2022-07-21 08:58:38,532 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 259 transitions, 2067 flow [2022-07-21 08:58:38,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,533 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:38,533 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] [2022-07-21 08:58:38,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:58:38,534 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:38,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:38,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1590304908, now seen corresponding path program 14 times [2022-07-21 08:58:38,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:38,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111877691] [2022-07-21 08:58:38,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:38,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:38,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:38,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:38,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111877691] [2022-07-21 08:58:38,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111877691] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:38,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:38,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:38,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269538793] [2022-07-21 08:58:38,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:38,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:38,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:38,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:38,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:38,639 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:38,639 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 259 transitions, 2067 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,639 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:38,639 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:38,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:39,120 INFO L129 PetriNetUnfolder]: 398/2072 cut-off events. [2022-07-21 08:58:39,120 INFO L130 PetriNetUnfolder]: For 14286/14390 co-relation queries the response was YES. [2022-07-21 08:58:39,137 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8195 conditions, 2072 events. 398/2072 cut-off events. For 14286/14390 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 16275 event pairs, 293 based on Foata normal form. 4/1984 useless extension candidates. Maximal degree in co-relation 8095. Up to 830 conditions per place. [2022-07-21 08:58:39,143 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 97 selfloop transitions, 14 changer transitions 43/299 dead transitions. [2022-07-21 08:58:39,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 299 transitions, 2865 flow [2022-07-21 08:58:39,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 08:58:39,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 08:58:39,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2784 transitions. [2022-07-21 08:58:39,149 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-07-21 08:58:39,149 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2784 transitions. [2022-07-21 08:58:39,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2784 transitions. [2022-07-21 08:58:39,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:39,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2784 transitions. [2022-07-21 08:58:39,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.57142857142858) internal successors, (2784), 21 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:39,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:39,156 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:39,157 INFO L186 Difference]: Start difference. First operand has 347 places, 259 transitions, 2067 flow. Second operand 21 states and 2784 transitions. [2022-07-21 08:58:39,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 299 transitions, 2865 flow [2022-07-21 08:58:39,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 299 transitions, 2696 flow, removed 36 selfloop flow, removed 24 redundant places. [2022-07-21 08:58:39,214 INFO L242 Difference]: Finished difference. Result has 330 places, 236 transitions, 1609 flow [2022-07-21 08:58:39,215 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1935, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1609, PETRI_PLACES=330, PETRI_TRANSITIONS=236} [2022-07-21 08:58:39,215 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 173 predicate places. [2022-07-21 08:58:39,215 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 236 transitions, 1609 flow [2022-07-21 08:58:39,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:39,216 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:39,216 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] [2022-07-21 08:58:39,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:58:39,216 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:39,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:39,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1971771582, now seen corresponding path program 15 times [2022-07-21 08:58:39,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:39,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649306565] [2022-07-21 08:58:39,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:39,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:39,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:39,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:39,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649306565] [2022-07-21 08:58:39,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649306565] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:39,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:39,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:39,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623302313] [2022-07-21 08:58:39,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:39,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:39,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:39,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:39,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:39,316 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:39,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 236 transitions, 1609 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:39,317 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:39,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:39,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:39,845 INFO L129 PetriNetUnfolder]: 409/1984 cut-off events. [2022-07-21 08:58:39,845 INFO L130 PetriNetUnfolder]: For 13775/13893 co-relation queries the response was YES. [2022-07-21 08:58:39,859 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8185 conditions, 1984 events. 409/1984 cut-off events. For 13775/13893 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15278 event pairs, 289 based on Foata normal form. 5/1894 useless extension candidates. Maximal degree in co-relation 8094. Up to 830 conditions per place. [2022-07-21 08:58:39,864 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 96 selfloop transitions, 26 changer transitions 35/302 dead transitions. [2022-07-21 08:58:39,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 302 transitions, 2891 flow [2022-07-21 08:58:39,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 08:58:39,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 08:58:39,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3187 transitions. [2022-07-21 08:58:39,867 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7631704980842912 [2022-07-21 08:58:39,867 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3187 transitions. [2022-07-21 08:58:39,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3187 transitions. [2022-07-21 08:58:39,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:39,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3187 transitions. [2022-07-21 08:58:39,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.79166666666666) internal successors, (3187), 24 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:39,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:39,873 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:39,873 INFO L186 Difference]: Start difference. First operand has 330 places, 236 transitions, 1609 flow. Second operand 24 states and 3187 transitions. [2022-07-21 08:58:39,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 302 transitions, 2891 flow [2022-07-21 08:58:39,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 302 transitions, 2646 flow, removed 42 selfloop flow, removed 23 redundant places. [2022-07-21 08:58:39,918 INFO L242 Difference]: Finished difference. Result has 311 places, 247 transitions, 1789 flow [2022-07-21 08:58:39,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1503, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1789, PETRI_PLACES=311, PETRI_TRANSITIONS=247} [2022-07-21 08:58:39,918 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 154 predicate places. [2022-07-21 08:58:39,918 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 247 transitions, 1789 flow [2022-07-21 08:58:39,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:39,919 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:39,919 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] [2022-07-21 08:58:39,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:58:39,919 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:39,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:39,920 INFO L85 PathProgramCache]: Analyzing trace with hash -596781132, now seen corresponding path program 16 times [2022-07-21 08:58:39,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:39,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73752582] [2022-07-21 08:58:39,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:39,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:40,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:40,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:40,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73752582] [2022-07-21 08:58:40,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73752582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:40,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:40,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:40,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455322510] [2022-07-21 08:58:40,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:40,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:40,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:40,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:40,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:40,005 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:40,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 247 transitions, 1789 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:40,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:40,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:40,524 INFO L129 PetriNetUnfolder]: 406/1986 cut-off events. [2022-07-21 08:58:40,524 INFO L130 PetriNetUnfolder]: For 12731/12850 co-relation queries the response was YES. [2022-07-21 08:58:40,537 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7986 conditions, 1986 events. 406/1986 cut-off events. For 12731/12850 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15327 event pairs, 289 based on Foata normal form. 6/1897 useless extension candidates. Maximal degree in co-relation 7896. Up to 832 conditions per place. [2022-07-21 08:58:40,541 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 95 selfloop transitions, 28 changer transitions 36/304 dead transitions. [2022-07-21 08:58:40,541 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 304 transitions, 2924 flow [2022-07-21 08:58:40,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-21 08:58:40,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-21 08:58:40,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3056 transitions. [2022-07-21 08:58:40,543 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7636181909045477 [2022-07-21 08:58:40,543 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3056 transitions. [2022-07-21 08:58:40,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3056 transitions. [2022-07-21 08:58:40,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:40,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3056 transitions. [2022-07-21 08:58:40,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.8695652173913) internal successors, (3056), 23 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,549 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,549 INFO L186 Difference]: Start difference. First operand has 311 places, 247 transitions, 1789 flow. Second operand 23 states and 3056 transitions. [2022-07-21 08:58:40,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 304 transitions, 2924 flow [2022-07-21 08:58:40,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 304 transitions, 2773 flow, removed 70 selfloop flow, removed 11 redundant places. [2022-07-21 08:58:40,596 INFO L242 Difference]: Finished difference. Result has 323 places, 251 transitions, 1915 flow [2022-07-21 08:58:40,597 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1721, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1915, PETRI_PLACES=323, PETRI_TRANSITIONS=251} [2022-07-21 08:58:40,597 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 166 predicate places. [2022-07-21 08:58:40,597 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 251 transitions, 1915 flow [2022-07-21 08:58:40,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,597 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:40,598 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] [2022-07-21 08:58:40,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 08:58:40,598 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:40,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:40,598 INFO L85 PathProgramCache]: Analyzing trace with hash 323830658, now seen corresponding path program 17 times [2022-07-21 08:58:40,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:40,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450477067] [2022-07-21 08:58:40,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:40,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:40,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:40,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:40,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450477067] [2022-07-21 08:58:40,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450477067] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:40,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:40,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:40,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089864338] [2022-07-21 08:58:40,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:40,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:40,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:40,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:40,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:40,678 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:40,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 251 transitions, 1915 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:40,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:40,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:41,161 INFO L129 PetriNetUnfolder]: 401/1970 cut-off events. [2022-07-21 08:58:41,161 INFO L130 PetriNetUnfolder]: For 12818/12937 co-relation queries the response was YES. [2022-07-21 08:58:41,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7937 conditions, 1970 events. 401/1970 cut-off events. For 12818/12937 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15188 event pairs, 287 based on Foata normal form. 6/1882 useless extension candidates. Maximal degree in co-relation 7841. Up to 832 conditions per place. [2022-07-21 08:58:41,181 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 94 selfloop transitions, 30 changer transitions 30/299 dead transitions. [2022-07-21 08:58:41,181 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 299 transitions, 2899 flow [2022-07-21 08:58:41,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:58:41,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:58:41,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2665 transitions. [2022-07-21 08:58:41,183 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7658045977011494 [2022-07-21 08:58:41,183 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2665 transitions. [2022-07-21 08:58:41,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2665 transitions. [2022-07-21 08:58:41,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:41,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2665 transitions. [2022-07-21 08:58:41,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.25) internal successors, (2665), 20 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,188 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,189 INFO L186 Difference]: Start difference. First operand has 323 places, 251 transitions, 1915 flow. Second operand 20 states and 2665 transitions. [2022-07-21 08:58:41,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 299 transitions, 2899 flow [2022-07-21 08:58:41,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 299 transitions, 2731 flow, removed 62 selfloop flow, removed 14 redundant places. [2022-07-21 08:58:41,237 INFO L242 Difference]: Finished difference. Result has 323 places, 258 transitions, 2029 flow [2022-07-21 08:58:41,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2029, PETRI_PLACES=323, PETRI_TRANSITIONS=258} [2022-07-21 08:58:41,238 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 166 predicate places. [2022-07-21 08:58:41,238 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 258 transitions, 2029 flow [2022-07-21 08:58:41,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,238 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:41,238 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] [2022-07-21 08:58:41,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 08:58:41,239 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:41,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:41,239 INFO L85 PathProgramCache]: Analyzing trace with hash 2116462952, now seen corresponding path program 18 times [2022-07-21 08:58:41,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:41,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510113440] [2022-07-21 08:58:41,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:41,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:41,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:41,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510113440] [2022-07-21 08:58:41,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510113440] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:41,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:41,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:41,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186021365] [2022-07-21 08:58:41,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:41,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:41,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:41,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:41,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:41,327 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:41,327 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 258 transitions, 2029 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,328 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:41,328 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:41,328 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:41,774 INFO L129 PetriNetUnfolder]: 405/2034 cut-off events. [2022-07-21 08:58:41,775 INFO L130 PetriNetUnfolder]: For 12631/12744 co-relation queries the response was YES. [2022-07-21 08:58:41,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8048 conditions, 2034 events. 405/2034 cut-off events. For 12631/12744 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 15816 event pairs, 311 based on Foata normal form. 4/1946 useless extension candidates. Maximal degree in co-relation 7955. Up to 832 conditions per place. [2022-07-21 08:58:41,794 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 94 selfloop transitions, 38 changer transitions 30/307 dead transitions. [2022-07-21 08:58:41,795 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 307 transitions, 3062 flow [2022-07-21 08:58:41,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 08:58:41,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-21 08:58:41,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2534 transitions. [2022-07-21 08:58:41,797 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7664851784633999 [2022-07-21 08:58:41,797 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2534 transitions. [2022-07-21 08:58:41,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2534 transitions. [2022-07-21 08:58:41,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:41,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2534 transitions. [2022-07-21 08:58:41,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.3684210526316) internal successors, (2534), 19 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,802 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,802 INFO L186 Difference]: Start difference. First operand has 323 places, 258 transitions, 2029 flow. Second operand 19 states and 2534 transitions. [2022-07-21 08:58:41,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 307 transitions, 3062 flow [2022-07-21 08:58:41,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 307 transitions, 2921 flow, removed 48 selfloop flow, removed 7 redundant places. [2022-07-21 08:58:41,850 INFO L242 Difference]: Finished difference. Result has 334 places, 266 transitions, 2205 flow [2022-07-21 08:58:41,850 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1938, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2205, PETRI_PLACES=334, PETRI_TRANSITIONS=266} [2022-07-21 08:58:41,851 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 177 predicate places. [2022-07-21 08:58:41,851 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 266 transitions, 2205 flow [2022-07-21 08:58:41,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,851 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:41,851 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] [2022-07-21 08:58:41,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 08:58:41,851 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:41,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:41,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1168380126, now seen corresponding path program 19 times [2022-07-21 08:58:41,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:41,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259614315] [2022-07-21 08:58:41,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:41,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:41,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:41,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:41,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259614315] [2022-07-21 08:58:41,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259614315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:41,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:41,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:41,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990185896] [2022-07-21 08:58:41,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:41,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:41,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:41,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:41,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:41,944 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:41,945 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 266 transitions, 2205 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,945 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:41,945 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:41,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:42,487 INFO L129 PetriNetUnfolder]: 402/2033 cut-off events. [2022-07-21 08:58:42,487 INFO L130 PetriNetUnfolder]: For 12661/12769 co-relation queries the response was YES. [2022-07-21 08:58:42,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8051 conditions, 2033 events. 402/2033 cut-off events. For 12661/12769 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 15830 event pairs, 307 based on Foata normal form. 3/1945 useless extension candidates. Maximal degree in co-relation 7952. Up to 830 conditions per place. [2022-07-21 08:58:42,505 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 101 selfloop transitions, 34 changer transitions 31/311 dead transitions. [2022-07-21 08:58:42,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 311 transitions, 3188 flow [2022-07-21 08:58:42,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:58:42,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:58:42,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2665 transitions. [2022-07-21 08:58:42,507 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7658045977011494 [2022-07-21 08:58:42,507 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2665 transitions. [2022-07-21 08:58:42,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2665 transitions. [2022-07-21 08:58:42,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:42,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2665 transitions. [2022-07-21 08:58:42,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.25) internal successors, (2665), 20 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:42,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:42,512 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:42,512 INFO L186 Difference]: Start difference. First operand has 334 places, 266 transitions, 2205 flow. Second operand 20 states and 2665 transitions. [2022-07-21 08:58:42,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 311 transitions, 3188 flow [2022-07-21 08:58:42,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 311 transitions, 3054 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-07-21 08:58:42,564 INFO L242 Difference]: Finished difference. Result has 344 places, 270 transitions, 2294 flow [2022-07-21 08:58:42,564 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2294, PETRI_PLACES=344, PETRI_TRANSITIONS=270} [2022-07-21 08:58:42,565 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 187 predicate places. [2022-07-21 08:58:42,565 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 270 transitions, 2294 flow [2022-07-21 08:58:42,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:42,565 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:42,565 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] [2022-07-21 08:58:42,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 08:58:42,566 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:42,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:42,566 INFO L85 PathProgramCache]: Analyzing trace with hash 222130868, now seen corresponding path program 20 times [2022-07-21 08:58:42,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:42,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934297040] [2022-07-21 08:58:42,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:42,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:42,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:42,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:42,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934297040] [2022-07-21 08:58:42,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934297040] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:42,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:42,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:42,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180744212] [2022-07-21 08:58:42,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:42,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:42,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:42,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:42,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:42,644 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:42,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 270 transitions, 2294 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:42,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:42,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:42,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:43,169 INFO L129 PetriNetUnfolder]: 399/1973 cut-off events. [2022-07-21 08:58:43,169 INFO L130 PetriNetUnfolder]: For 12192/12308 co-relation queries the response was YES. [2022-07-21 08:58:43,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7917 conditions, 1973 events. 399/1973 cut-off events. For 12192/12308 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15259 event pairs, 283 based on Foata normal form. 5/1884 useless extension candidates. Maximal degree in co-relation 7814. Up to 830 conditions per place. [2022-07-21 08:58:43,189 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 94 selfloop transitions, 30 changer transitions 40/309 dead transitions. [2022-07-21 08:58:43,190 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 309 transitions, 3106 flow [2022-07-21 08:58:43,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 08:58:43,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 08:58:43,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2921 transitions. [2022-07-21 08:58:43,192 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7630616509926855 [2022-07-21 08:58:43,192 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2921 transitions. [2022-07-21 08:58:43,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2921 transitions. [2022-07-21 08:58:43,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:43,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2921 transitions. [2022-07-21 08:58:43,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.77272727272728) internal successors, (2921), 22 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:43,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:43,197 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:43,197 INFO L186 Difference]: Start difference. First operand has 344 places, 270 transitions, 2294 flow. Second operand 22 states and 2921 transitions. [2022-07-21 08:58:43,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 309 transitions, 3106 flow [2022-07-21 08:58:43,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 309 transitions, 2991 flow, removed 34 selfloop flow, removed 7 redundant places. [2022-07-21 08:58:43,256 INFO L242 Difference]: Finished difference. Result has 358 places, 261 transitions, 2111 flow [2022-07-21 08:58:43,257 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2201, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2111, PETRI_PLACES=358, PETRI_TRANSITIONS=261} [2022-07-21 08:58:43,257 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 201 predicate places. [2022-07-21 08:58:43,257 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 261 transitions, 2111 flow [2022-07-21 08:58:43,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:43,258 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:43,258 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] [2022-07-21 08:58:43,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 08:58:43,258 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:43,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:43,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1328147332, now seen corresponding path program 21 times [2022-07-21 08:58:43,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:43,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298285740] [2022-07-21 08:58:43,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:43,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:43,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:43,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:43,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298285740] [2022-07-21 08:58:43,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298285740] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:43,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:43,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:43,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801056179] [2022-07-21 08:58:43,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:43,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:43,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:43,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:43,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:43,337 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:43,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 261 transitions, 2111 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:43,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:43,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:43,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:43,863 INFO L129 PetriNetUnfolder]: 390/1996 cut-off events. [2022-07-21 08:58:43,863 INFO L130 PetriNetUnfolder]: For 12231/12339 co-relation queries the response was YES. [2022-07-21 08:58:43,879 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7756 conditions, 1996 events. 390/1996 cut-off events. For 12231/12339 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 15542 event pairs, 307 based on Foata normal form. 3/1908 useless extension candidates. Maximal degree in co-relation 7647. Up to 830 conditions per place. [2022-07-21 08:58:43,883 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 91 selfloop transitions, 16 changer transitions 43/295 dead transitions. [2022-07-21 08:58:43,883 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 295 transitions, 2825 flow [2022-07-21 08:58:43,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 08:58:43,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 08:58:43,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2791 transitions. [2022-07-21 08:58:43,885 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7638204707170224 [2022-07-21 08:58:43,885 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2791 transitions. [2022-07-21 08:58:43,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2791 transitions. [2022-07-21 08:58:43,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:43,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2791 transitions. [2022-07-21 08:58:43,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.9047619047619) internal successors, (2791), 21 states have internal predecessors, (2791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:43,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:43,890 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:43,890 INFO L186 Difference]: Start difference. First operand has 358 places, 261 transitions, 2111 flow. Second operand 21 states and 2791 transitions. [2022-07-21 08:58:43,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 295 transitions, 2825 flow [2022-07-21 08:58:43,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 295 transitions, 2630 flow, removed 39 selfloop flow, removed 25 redundant places. [2022-07-21 08:58:43,940 INFO L242 Difference]: Finished difference. Result has 341 places, 244 transitions, 1732 flow [2022-07-21 08:58:43,940 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1965, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1732, PETRI_PLACES=341, PETRI_TRANSITIONS=244} [2022-07-21 08:58:43,940 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 184 predicate places. [2022-07-21 08:58:43,940 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 244 transitions, 1732 flow [2022-07-21 08:58:43,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:43,941 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:43,941 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] [2022-07-21 08:58:43,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 08:58:43,941 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:43,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:43,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1758735014, now seen corresponding path program 22 times [2022-07-21 08:58:43,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:43,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038457652] [2022-07-21 08:58:43,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:43,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:44,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:44,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:44,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038457652] [2022-07-21 08:58:44,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038457652] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:44,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:44,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:44,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254224543] [2022-07-21 08:58:44,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:44,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:44,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:44,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:44,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:44,028 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:44,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 244 transitions, 1732 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:44,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:44,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:44,504 INFO L129 PetriNetUnfolder]: 375/1884 cut-off events. [2022-07-21 08:58:44,504 INFO L130 PetriNetUnfolder]: For 11013/11129 co-relation queries the response was YES. [2022-07-21 08:58:44,518 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7220 conditions, 1884 events. 375/1884 cut-off events. For 11013/11129 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14308 event pairs, 281 based on Foata normal form. 5/1798 useless extension candidates. Maximal degree in co-relation 7122. Up to 817 conditions per place. [2022-07-21 08:58:44,523 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 76 selfloop transitions, 4 changer transitions 46/271 dead transitions. [2022-07-21 08:58:44,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 271 transitions, 2261 flow [2022-07-21 08:58:44,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:58:44,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:58:44,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2652 transitions. [2022-07-21 08:58:44,525 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7620689655172413 [2022-07-21 08:58:44,525 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2652 transitions. [2022-07-21 08:58:44,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2652 transitions. [2022-07-21 08:58:44,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:44,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2652 transitions. [2022-07-21 08:58:44,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.6) internal successors, (2652), 20 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,530 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,530 INFO L186 Difference]: Start difference. First operand has 341 places, 244 transitions, 1732 flow. Second operand 20 states and 2652 transitions. [2022-07-21 08:58:44,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 271 transitions, 2261 flow [2022-07-21 08:58:44,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 271 transitions, 2134 flow, removed 25 selfloop flow, removed 24 redundant places. [2022-07-21 08:58:44,575 INFO L242 Difference]: Finished difference. Result has 316 places, 217 transitions, 1255 flow [2022-07-21 08:58:44,575 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1629, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1255, PETRI_PLACES=316, PETRI_TRANSITIONS=217} [2022-07-21 08:58:44,576 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 159 predicate places. [2022-07-21 08:58:44,576 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 217 transitions, 1255 flow [2022-07-21 08:58:44,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,576 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:44,576 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] [2022-07-21 08:58:44,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-21 08:58:44,577 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:44,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:44,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1429686126, now seen corresponding path program 23 times [2022-07-21 08:58:44,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:44,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214770376] [2022-07-21 08:58:44,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:44,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:44,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:44,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:44,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214770376] [2022-07-21 08:58:44,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214770376] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:44,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:44,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:44,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832273165] [2022-07-21 08:58:44,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:44,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:44,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:44,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:44,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:44,668 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:44,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 217 transitions, 1255 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:44,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:44,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:45,243 INFO L129 PetriNetUnfolder]: 394/1934 cut-off events. [2022-07-21 08:58:45,243 INFO L130 PetriNetUnfolder]: For 11131/11241 co-relation queries the response was YES. [2022-07-21 08:58:45,256 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7460 conditions, 1934 events. 394/1934 cut-off events. For 11131/11241 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14769 event pairs, 274 based on Foata normal form. 3/1847 useless extension candidates. Maximal degree in co-relation 7374. Up to 819 conditions per place. [2022-07-21 08:58:45,261 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 23 changer transitions 42/310 dead transitions. [2022-07-21 08:58:45,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 310 transitions, 2669 flow [2022-07-21 08:58:45,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 08:58:45,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-21 08:58:45,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3707 transitions. [2022-07-21 08:58:45,266 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7608784893267652 [2022-07-21 08:58:45,266 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3707 transitions. [2022-07-21 08:58:45,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3707 transitions. [2022-07-21 08:58:45,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:45,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3707 transitions. [2022-07-21 08:58:45,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.39285714285714) internal successors, (3707), 28 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:45,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:45,272 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:45,272 INFO L186 Difference]: Start difference. First operand has 316 places, 217 transitions, 1255 flow. Second operand 28 states and 3707 transitions. [2022-07-21 08:58:45,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 310 transitions, 2669 flow [2022-07-21 08:58:45,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 310 transitions, 2500 flow, removed 40 selfloop flow, removed 19 redundant places. [2022-07-21 08:58:45,303 INFO L242 Difference]: Finished difference. Result has 304 places, 230 transitions, 1471 flow [2022-07-21 08:58:45,303 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1205, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1471, PETRI_PLACES=304, PETRI_TRANSITIONS=230} [2022-07-21 08:58:45,304 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 147 predicate places. [2022-07-21 08:58:45,304 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 230 transitions, 1471 flow [2022-07-21 08:58:45,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:45,305 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:45,305 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:45,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-21 08:58:45,305 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:45,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:45,305 INFO L85 PathProgramCache]: Analyzing trace with hash 550604824, now seen corresponding path program 24 times [2022-07-21 08:58:45,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:45,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115834677] [2022-07-21 08:58:45,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:45,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:45,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:45,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:45,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115834677] [2022-07-21 08:58:45,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115834677] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:45,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:45,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:45,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768944520] [2022-07-21 08:58:45,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:45,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:45,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:45,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:45,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:45,390 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:45,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 230 transitions, 1471 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:45,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:45,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:45,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:45,980 INFO L129 PetriNetUnfolder]: 391/1912 cut-off events. [2022-07-21 08:58:45,980 INFO L130 PetriNetUnfolder]: For 10818/10928 co-relation queries the response was YES. [2022-07-21 08:58:45,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7478 conditions, 1912 events. 391/1912 cut-off events. For 10818/10928 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14556 event pairs, 277 based on Foata normal form. 3/1821 useless extension candidates. Maximal degree in co-relation 7386. Up to 817 conditions per place. [2022-07-21 08:58:46,001 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 89 selfloop transitions, 25 changer transitions 42/301 dead transitions. [2022-07-21 08:58:46,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 301 transitions, 2710 flow [2022-07-21 08:58:46,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-21 08:58:46,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-21 08:58:46,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3579 transitions. [2022-07-21 08:58:46,003 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7618135376756067 [2022-07-21 08:58:46,004 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3579 transitions. [2022-07-21 08:58:46,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3579 transitions. [2022-07-21 08:58:46,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:46,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3579 transitions. [2022-07-21 08:58:46,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.55555555555554) internal successors, (3579), 27 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,009 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,009 INFO L186 Difference]: Start difference. First operand has 304 places, 230 transitions, 1471 flow. Second operand 27 states and 3579 transitions. [2022-07-21 08:58:46,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 301 transitions, 2710 flow [2022-07-21 08:58:46,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 301 transitions, 2546 flow, removed 74 selfloop flow, removed 17 redundant places. [2022-07-21 08:58:46,046 INFO L242 Difference]: Finished difference. Result has 315 places, 234 transitions, 1627 flow [2022-07-21 08:58:46,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1627, PETRI_PLACES=315, PETRI_TRANSITIONS=234} [2022-07-21 08:58:46,047 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 158 predicate places. [2022-07-21 08:58:46,047 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 234 transitions, 1627 flow [2022-07-21 08:58:46,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,047 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:46,048 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] [2022-07-21 08:58:46,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-21 08:58:46,048 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:46,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:46,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1446322912, now seen corresponding path program 25 times [2022-07-21 08:58:46,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:46,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697574973] [2022-07-21 08:58:46,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:46,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:46,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:46,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:46,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697574973] [2022-07-21 08:58:46,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697574973] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:46,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:46,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:46,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374373899] [2022-07-21 08:58:46,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:46,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:46,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:46,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:46,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:46,130 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:46,131 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 234 transitions, 1627 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:46,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:46,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:46,682 INFO L129 PetriNetUnfolder]: 386/1894 cut-off events. [2022-07-21 08:58:46,683 INFO L130 PetriNetUnfolder]: For 12161/12271 co-relation queries the response was YES. [2022-07-21 08:58:46,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7606 conditions, 1894 events. 386/1894 cut-off events. For 12161/12271 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14376 event pairs, 270 based on Foata normal form. 3/1807 useless extension candidates. Maximal degree in co-relation 7508. Up to 820 conditions per place. [2022-07-21 08:58:46,703 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 98 selfloop transitions, 27 changer transitions 37/307 dead transitions. [2022-07-21 08:58:46,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 307 transitions, 2901 flow [2022-07-21 08:58:46,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 08:58:46,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 08:58:46,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3185 transitions. [2022-07-21 08:58:46,706 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7626915708812261 [2022-07-21 08:58:46,706 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3185 transitions. [2022-07-21 08:58:46,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3185 transitions. [2022-07-21 08:58:46,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:46,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3185 transitions. [2022-07-21 08:58:46,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.70833333333334) internal successors, (3185), 24 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,711 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,711 INFO L186 Difference]: Start difference. First operand has 315 places, 234 transitions, 1627 flow. Second operand 24 states and 3185 transitions. [2022-07-21 08:58:46,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 307 transitions, 2901 flow [2022-07-21 08:58:46,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 307 transitions, 2677 flow, removed 93 selfloop flow, removed 20 redundant places. [2022-07-21 08:58:46,760 INFO L242 Difference]: Finished difference. Result has 314 places, 241 transitions, 1750 flow [2022-07-21 08:58:46,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1750, PETRI_PLACES=314, PETRI_TRANSITIONS=241} [2022-07-21 08:58:46,761 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 157 predicate places. [2022-07-21 08:58:46,761 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 241 transitions, 1750 flow [2022-07-21 08:58:46,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,761 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:46,761 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] [2022-07-21 08:58:46,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-21 08:58:46,762 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:46,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:46,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1840107906, now seen corresponding path program 26 times [2022-07-21 08:58:46,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:46,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651212786] [2022-07-21 08:58:46,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:46,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:46,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:46,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:46,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651212786] [2022-07-21 08:58:46,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651212786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:46,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:46,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:46,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638882129] [2022-07-21 08:58:46,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:46,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:46,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:46,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:46,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:46,850 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:46,850 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 241 transitions, 1750 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:46,850 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:46,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:47,328 INFO L129 PetriNetUnfolder]: 398/1931 cut-off events. [2022-07-21 08:58:47,328 INFO L130 PetriNetUnfolder]: For 11676/11789 co-relation queries the response was YES. [2022-07-21 08:58:47,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7781 conditions, 1931 events. 398/1931 cut-off events. For 11676/11789 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14758 event pairs, 280 based on Foata normal form. 4/1841 useless extension candidates. Maximal degree in co-relation 7686. Up to 831 conditions per place. [2022-07-21 08:58:47,347 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 88 selfloop transitions, 37 changer transitions 36/306 dead transitions. [2022-07-21 08:58:47,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 306 transitions, 2972 flow [2022-07-21 08:58:47,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-21 08:58:47,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-21 08:58:47,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3057 transitions. [2022-07-21 08:58:47,349 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7638680659670165 [2022-07-21 08:58:47,349 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3057 transitions. [2022-07-21 08:58:47,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3057 transitions. [2022-07-21 08:58:47,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:47,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3057 transitions. [2022-07-21 08:58:47,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.91304347826087) internal successors, (3057), 23 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:47,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:47,353 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:47,353 INFO L186 Difference]: Start difference. First operand has 314 places, 241 transitions, 1750 flow. Second operand 23 states and 3057 transitions. [2022-07-21 08:58:47,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 306 transitions, 2972 flow [2022-07-21 08:58:47,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 306 transitions, 2814 flow, removed 62 selfloop flow, removed 12 redundant places. [2022-07-21 08:58:47,397 INFO L242 Difference]: Finished difference. Result has 325 places, 251 transitions, 1980 flow [2022-07-21 08:58:47,397 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1980, PETRI_PLACES=325, PETRI_TRANSITIONS=251} [2022-07-21 08:58:47,397 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 168 predicate places. [2022-07-21 08:58:47,397 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 251 transitions, 1980 flow [2022-07-21 08:58:47,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:47,397 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:47,397 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] [2022-07-21 08:58:47,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-21 08:58:47,398 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:47,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:47,398 INFO L85 PathProgramCache]: Analyzing trace with hash 138356410, now seen corresponding path program 27 times [2022-07-21 08:58:47,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:47,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065752580] [2022-07-21 08:58:47,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:47,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:47,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:47,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065752580] [2022-07-21 08:58:47,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065752580] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:47,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:47,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:47,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040258286] [2022-07-21 08:58:47,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:47,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:47,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:47,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:47,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:47,474 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:47,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 251 transitions, 1980 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:47,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:47,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:47,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:47,991 INFO L129 PetriNetUnfolder]: 395/1924 cut-off events. [2022-07-21 08:58:47,991 INFO L130 PetriNetUnfolder]: For 12200/12316 co-relation queries the response was YES. [2022-07-21 08:58:48,003 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7852 conditions, 1924 events. 395/1924 cut-off events. For 12200/12316 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14645 event pairs, 277 based on Foata normal form. 5/1836 useless extension candidates. Maximal degree in co-relation 7751. Up to 829 conditions per place. [2022-07-21 08:58:48,007 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 97 selfloop transitions, 33 changer transitions 37/312 dead transitions. [2022-07-21 08:58:48,007 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 312 transitions, 3228 flow [2022-07-21 08:58:48,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 08:58:48,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 08:58:48,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3190 transitions. [2022-07-21 08:58:48,009 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7638888888888888 [2022-07-21 08:58:48,009 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3190 transitions. [2022-07-21 08:58:48,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3190 transitions. [2022-07-21 08:58:48,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:48,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3190 transitions. [2022-07-21 08:58:48,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.91666666666666) internal successors, (3190), 24 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:48,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:48,014 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:48,014 INFO L186 Difference]: Start difference. First operand has 325 places, 251 transitions, 1980 flow. Second operand 24 states and 3190 transitions. [2022-07-21 08:58:48,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 312 transitions, 3228 flow [2022-07-21 08:58:48,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 312 transitions, 3002 flow, removed 83 selfloop flow, removed 14 redundant places. [2022-07-21 08:58:48,057 INFO L242 Difference]: Finished difference. Result has 335 places, 255 transitions, 2075 flow [2022-07-21 08:58:48,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2075, PETRI_PLACES=335, PETRI_TRANSITIONS=255} [2022-07-21 08:58:48,057 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 178 predicate places. [2022-07-21 08:58:48,057 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 255 transitions, 2075 flow [2022-07-21 08:58:48,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:48,058 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:48,058 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] [2022-07-21 08:58:48,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-21 08:58:48,058 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:48,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:48,058 INFO L85 PathProgramCache]: Analyzing trace with hash -489816904, now seen corresponding path program 28 times [2022-07-21 08:58:48,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:48,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984850596] [2022-07-21 08:58:48,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:48,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:48,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:48,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984850596] [2022-07-21 08:58:48,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984850596] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:48,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:48,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:48,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697003862] [2022-07-21 08:58:48,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:48,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:48,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:48,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:48,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:48,146 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:48,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 255 transitions, 2075 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:48,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:48,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:48,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:48,606 INFO L129 PetriNetUnfolder]: 389/1912 cut-off events. [2022-07-21 08:58:48,606 INFO L130 PetriNetUnfolder]: For 11873/11989 co-relation queries the response was YES. [2022-07-21 08:58:48,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7714 conditions, 1912 events. 389/1912 cut-off events. For 11873/11989 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14611 event pairs, 273 based on Foata normal form. 5/1827 useless extension candidates. Maximal degree in co-relation 7609. Up to 831 conditions per place. [2022-07-21 08:58:48,626 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 101 selfloop transitions, 35 changer transitions 32/313 dead transitions. [2022-07-21 08:58:48,626 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 313 transitions, 3119 flow [2022-07-21 08:58:48,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:58:48,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:58:48,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2022-07-21 08:58:48,630 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2022-07-21 08:58:48,630 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2022-07-21 08:58:48,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2022-07-21 08:58:48,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:48,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2022-07-21 08:58:48,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:48,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:48,633 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:48,633 INFO L186 Difference]: Start difference. First operand has 335 places, 255 transitions, 2075 flow. Second operand 20 states and 2663 transitions. [2022-07-21 08:58:48,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 313 transitions, 3119 flow [2022-07-21 08:58:48,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 313 transitions, 2953 flow, removed 68 selfloop flow, removed 12 redundant places. [2022-07-21 08:58:48,683 INFO L242 Difference]: Finished difference. Result has 336 places, 262 transitions, 2194 flow [2022-07-21 08:58:48,684 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2194, PETRI_PLACES=336, PETRI_TRANSITIONS=262} [2022-07-21 08:58:48,684 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 179 predicate places. [2022-07-21 08:58:48,684 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 262 transitions, 2194 flow [2022-07-21 08:58:48,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:48,684 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:48,684 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] [2022-07-21 08:58:48,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-21 08:58:48,684 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:48,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:48,685 INFO L85 PathProgramCache]: Analyzing trace with hash -966183238, now seen corresponding path program 29 times [2022-07-21 08:58:48,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:48,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354368117] [2022-07-21 08:58:48,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:48,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:48,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:48,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:48,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354368117] [2022-07-21 08:58:48,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354368117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:48,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:48,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:48,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905193850] [2022-07-21 08:58:48,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:48,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:48,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:48,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:48,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:48,759 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:48,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 262 transitions, 2194 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:48,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:48,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:48,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:49,206 INFO L129 PetriNetUnfolder]: 393/1931 cut-off events. [2022-07-21 08:58:49,206 INFO L130 PetriNetUnfolder]: For 11584/11702 co-relation queries the response was YES. [2022-07-21 08:58:49,222 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7828 conditions, 1931 events. 393/1931 cut-off events. For 11584/11702 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14744 event pairs, 273 based on Foata normal form. 5/1844 useless extension candidates. Maximal degree in co-relation 7724. Up to 834 conditions per place. [2022-07-21 08:58:49,227 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 90 selfloop transitions, 48 changer transitions 31/314 dead transitions. [2022-07-21 08:58:49,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 314 transitions, 3260 flow [2022-07-21 08:58:49,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 08:58:49,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-21 08:58:49,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2535 transitions. [2022-07-21 08:58:49,229 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7667876588021778 [2022-07-21 08:58:49,229 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2535 transitions. [2022-07-21 08:58:49,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2535 transitions. [2022-07-21 08:58:49,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:49,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2535 transitions. [2022-07-21 08:58:49,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.42105263157896) internal successors, (2535), 19 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:49,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:49,233 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:49,233 INFO L186 Difference]: Start difference. First operand has 336 places, 262 transitions, 2194 flow. Second operand 19 states and 2535 transitions. [2022-07-21 08:58:49,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 314 transitions, 3260 flow [2022-07-21 08:58:49,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 314 transitions, 3146 flow, removed 35 selfloop flow, removed 7 redundant places. [2022-07-21 08:58:49,296 INFO L242 Difference]: Finished difference. Result has 347 places, 270 transitions, 2409 flow [2022-07-21 08:58:49,296 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2409, PETRI_PLACES=347, PETRI_TRANSITIONS=270} [2022-07-21 08:58:49,296 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 190 predicate places. [2022-07-21 08:58:49,296 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 270 transitions, 2409 flow [2022-07-21 08:58:49,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:49,297 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:49,297 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] [2022-07-21 08:58:49,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-21 08:58:49,297 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:49,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:49,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1556814568, now seen corresponding path program 30 times [2022-07-21 08:58:49,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:49,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87755191] [2022-07-21 08:58:49,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:49,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:49,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:49,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:49,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87755191] [2022-07-21 08:58:49,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87755191] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:49,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:49,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:49,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831686700] [2022-07-21 08:58:49,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:49,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:49,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:49,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:49,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:49,392 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:49,393 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 270 transitions, 2409 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:49,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:49,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:49,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:49,828 INFO L129 PetriNetUnfolder]: 390/1923 cut-off events. [2022-07-21 08:58:49,828 INFO L130 PetriNetUnfolder]: For 11801/11915 co-relation queries the response was YES. [2022-07-21 08:58:49,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7866 conditions, 1923 events. 390/1923 cut-off events. For 11801/11915 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14712 event pairs, 270 based on Foata normal form. 4/1835 useless extension candidates. Maximal degree in co-relation 7756. Up to 832 conditions per place. [2022-07-21 08:58:49,849 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 97 selfloop transitions, 44 changer transitions 31/317 dead transitions. [2022-07-21 08:58:49,849 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 317 transitions, 3423 flow [2022-07-21 08:58:49,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:58:49,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:58:49,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2666 transitions. [2022-07-21 08:58:49,851 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7660919540229885 [2022-07-21 08:58:49,851 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2666 transitions. [2022-07-21 08:58:49,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2666 transitions. [2022-07-21 08:58:49,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:49,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2666 transitions. [2022-07-21 08:58:49,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.3) internal successors, (2666), 20 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:49,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:49,854 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:49,854 INFO L186 Difference]: Start difference. First operand has 347 places, 270 transitions, 2409 flow. Second operand 20 states and 2666 transitions. [2022-07-21 08:58:49,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 317 transitions, 3423 flow [2022-07-21 08:58:49,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 317 transitions, 3258 flow, removed 36 selfloop flow, removed 9 redundant places. [2022-07-21 08:58:49,914 INFO L242 Difference]: Finished difference. Result has 358 places, 276 transitions, 2544 flow [2022-07-21 08:58:49,915 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2281, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2544, PETRI_PLACES=358, PETRI_TRANSITIONS=276} [2022-07-21 08:58:49,915 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 201 predicate places. [2022-07-21 08:58:49,915 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 276 transitions, 2544 flow [2022-07-21 08:58:49,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:49,915 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:49,915 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] [2022-07-21 08:58:49,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-21 08:58:49,916 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:49,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:49,916 INFO L85 PathProgramCache]: Analyzing trace with hash -584237514, now seen corresponding path program 31 times [2022-07-21 08:58:49,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:49,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246515895] [2022-07-21 08:58:49,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:49,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:50,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:50,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:50,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246515895] [2022-07-21 08:58:50,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246515895] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:50,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:50,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:50,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349217917] [2022-07-21 08:58:50,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:50,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:50,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:50,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:50,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:50,011 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:50,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 276 transitions, 2544 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:50,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:50,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:50,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:50,488 INFO L129 PetriNetUnfolder]: 387/1914 cut-off events. [2022-07-21 08:58:50,488 INFO L130 PetriNetUnfolder]: For 11854/11964 co-relation queries the response was YES. [2022-07-21 08:58:50,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7839 conditions, 1914 events. 387/1914 cut-off events. For 11854/11964 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14638 event pairs, 266 based on Foata normal form. 3/1824 useless extension candidates. Maximal degree in co-relation 7724. Up to 828 conditions per place. [2022-07-21 08:58:50,509 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 38 changer transitions 32/322 dead transitions. [2022-07-21 08:58:50,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 322 transitions, 3565 flow [2022-07-21 08:58:50,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:58:50,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:58:50,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2668 transitions. [2022-07-21 08:58:50,525 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2022-07-21 08:58:50,525 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2668 transitions. [2022-07-21 08:58:50,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2668 transitions. [2022-07-21 08:58:50,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:50,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2668 transitions. [2022-07-21 08:58:50,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.4) internal successors, (2668), 20 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:50,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:50,528 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:50,529 INFO L186 Difference]: Start difference. First operand has 358 places, 276 transitions, 2544 flow. Second operand 20 states and 2668 transitions. [2022-07-21 08:58:50,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 322 transitions, 3565 flow [2022-07-21 08:58:50,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 322 transitions, 3421 flow, removed 43 selfloop flow, removed 8 redundant places. [2022-07-21 08:58:50,601 INFO L242 Difference]: Finished difference. Result has 368 places, 280 transitions, 2630 flow [2022-07-21 08:58:50,601 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2426, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2630, PETRI_PLACES=368, PETRI_TRANSITIONS=280} [2022-07-21 08:58:50,602 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 211 predicate places. [2022-07-21 08:58:50,602 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 280 transitions, 2630 flow [2022-07-21 08:58:50,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:50,602 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:50,602 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] [2022-07-21 08:58:50,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-21 08:58:50,603 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:50,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:50,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1812748130, now seen corresponding path program 32 times [2022-07-21 08:58:50,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:50,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060857235] [2022-07-21 08:58:50,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:50,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:50,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:50,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:50,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060857235] [2022-07-21 08:58:50,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060857235] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:50,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:50,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:50,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924389454] [2022-07-21 08:58:50,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:50,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:50,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:50,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:50,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:50,690 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:50,691 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 280 transitions, 2630 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:50,691 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:50,691 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:50,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:51,167 INFO L129 PetriNetUnfolder]: 377/1890 cut-off events. [2022-07-21 08:58:51,167 INFO L130 PetriNetUnfolder]: For 11403/11513 co-relation queries the response was YES. [2022-07-21 08:58:51,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7611 conditions, 1890 events. 377/1890 cut-off events. For 11403/11513 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14442 event pairs, 265 based on Foata normal form. 3/1804 useless extension candidates. Maximal degree in co-relation 7492. Up to 821 conditions per place. [2022-07-21 08:58:51,184 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 20 changer transitions 47/319 dead transitions. [2022-07-21 08:58:51,184 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 319 transitions, 3350 flow [2022-07-21 08:58:51,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 08:58:51,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-21 08:58:51,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2532 transitions. [2022-07-21 08:58:51,186 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7658802177858439 [2022-07-21 08:58:51,186 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2532 transitions. [2022-07-21 08:58:51,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2532 transitions. [2022-07-21 08:58:51,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:51,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2532 transitions. [2022-07-21 08:58:51,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.26315789473685) internal successors, (2532), 19 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,189 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,190 INFO L186 Difference]: Start difference. First operand has 368 places, 280 transitions, 2630 flow. Second operand 19 states and 2532 transitions. [2022-07-21 08:58:51,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 319 transitions, 3350 flow [2022-07-21 08:58:51,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 319 transitions, 3221 flow, removed 46 selfloop flow, removed 7 redundant places. [2022-07-21 08:58:51,250 INFO L242 Difference]: Finished difference. Result has 374 places, 256 transitions, 2133 flow [2022-07-21 08:58:51,251 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2507, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2133, PETRI_PLACES=374, PETRI_TRANSITIONS=256} [2022-07-21 08:58:51,251 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 217 predicate places. [2022-07-21 08:58:51,251 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 256 transitions, 2133 flow [2022-07-21 08:58:51,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,251 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:51,251 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] [2022-07-21 08:58:51,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-21 08:58:51,252 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:51,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:51,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1977702522, now seen corresponding path program 33 times [2022-07-21 08:58:51,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:51,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842347012] [2022-07-21 08:58:51,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:51,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:51,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:51,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:51,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842347012] [2022-07-21 08:58:51,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842347012] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:51,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:51,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:51,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558293300] [2022-07-21 08:58:51,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:51,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:51,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:51,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:51,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:51,343 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:51,344 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 256 transitions, 2133 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,344 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:51,344 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:51,344 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:51,832 INFO L129 PetriNetUnfolder]: 372/1864 cut-off events. [2022-07-21 08:58:51,833 INFO L130 PetriNetUnfolder]: For 10777/10887 co-relation queries the response was YES. [2022-07-21 08:58:51,849 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7384 conditions, 1864 events. 372/1864 cut-off events. For 10777/10887 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14145 event pairs, 265 based on Foata normal form. 3/1775 useless extension candidates. Maximal degree in co-relation 7264. Up to 818 conditions per place. [2022-07-21 08:58:51,854 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 88 selfloop transitions, 23 changer transitions 41/297 dead transitions. [2022-07-21 08:58:51,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 297 transitions, 2936 flow [2022-07-21 08:58:51,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 08:58:51,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 08:58:51,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2795 transitions. [2022-07-21 08:58:51,856 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7649151614668857 [2022-07-21 08:58:51,856 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2795 transitions. [2022-07-21 08:58:51,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2795 transitions. [2022-07-21 08:58:51,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:51,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2795 transitions. [2022-07-21 08:58:51,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 133.0952380952381) internal successors, (2795), 21 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,859 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,859 INFO L186 Difference]: Start difference. First operand has 374 places, 256 transitions, 2133 flow. Second operand 21 states and 2795 transitions. [2022-07-21 08:58:51,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 297 transitions, 2936 flow [2022-07-21 08:58:51,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 297 transitions, 2720 flow, removed 33 selfloop flow, removed 24 redundant places. [2022-07-21 08:58:51,916 INFO L242 Difference]: Finished difference. Result has 350 places, 247 transitions, 1877 flow [2022-07-21 08:58:51,917 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1982, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1877, PETRI_PLACES=350, PETRI_TRANSITIONS=247} [2022-07-21 08:58:51,917 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 193 predicate places. [2022-07-21 08:58:51,917 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 247 transitions, 1877 flow [2022-07-21 08:58:51,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,917 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:51,917 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] [2022-07-21 08:58:51,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-21 08:58:51,918 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:51,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:51,918 INFO L85 PathProgramCache]: Analyzing trace with hash 297360238, now seen corresponding path program 34 times [2022-07-21 08:58:51,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:51,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449659903] [2022-07-21 08:58:51,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:51,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:52,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:52,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:52,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449659903] [2022-07-21 08:58:52,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449659903] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:52,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:52,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:52,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517849054] [2022-07-21 08:58:52,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:52,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:52,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:52,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:52,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:52,016 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:52,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 247 transitions, 1877 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:52,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:52,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:52,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:52,513 INFO L129 PetriNetUnfolder]: 363/1837 cut-off events. [2022-07-21 08:58:52,514 INFO L130 PetriNetUnfolder]: For 9577/9687 co-relation queries the response was YES. [2022-07-21 08:58:52,530 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6932 conditions, 1837 events. 363/1837 cut-off events. For 9577/9687 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 13955 event pairs, 266 based on Foata normal form. 3/1748 useless extension candidates. Maximal degree in co-relation 6820. Up to 812 conditions per place. [2022-07-21 08:58:52,534 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 75 selfloop transitions, 18 changer transitions 42/280 dead transitions. [2022-07-21 08:58:52,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 280 transitions, 2477 flow [2022-07-21 08:58:52,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 08:58:52,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 08:58:52,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2921 transitions. [2022-07-21 08:58:52,551 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7630616509926855 [2022-07-21 08:58:52,551 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2921 transitions. [2022-07-21 08:58:52,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2921 transitions. [2022-07-21 08:58:52,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:52,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2921 transitions. [2022-07-21 08:58:52,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.77272727272728) internal successors, (2921), 22 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:52,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:52,555 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:52,555 INFO L186 Difference]: Start difference. First operand has 350 places, 247 transitions, 1877 flow. Second operand 22 states and 2921 transitions. [2022-07-21 08:58:52,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 280 transitions, 2477 flow [2022-07-21 08:58:52,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 280 transitions, 2322 flow, removed 25 selfloop flow, removed 24 redundant places. [2022-07-21 08:58:52,646 INFO L242 Difference]: Finished difference. Result has 336 places, 230 transitions, 1544 flow [2022-07-21 08:58:52,647 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1544, PETRI_PLACES=336, PETRI_TRANSITIONS=230} [2022-07-21 08:58:52,649 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 179 predicate places. [2022-07-21 08:58:52,649 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 230 transitions, 1544 flow [2022-07-21 08:58:52,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:52,649 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:52,649 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] [2022-07-21 08:58:52,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-21 08:58:52,650 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:52,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:52,650 INFO L85 PathProgramCache]: Analyzing trace with hash -218078410, now seen corresponding path program 35 times [2022-07-21 08:58:52,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:52,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174649924] [2022-07-21 08:58:52,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:52,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:52,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:52,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:52,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174649924] [2022-07-21 08:58:52,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174649924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:52,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:52,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:52,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35124046] [2022-07-21 08:58:52,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:52,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:52,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:52,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:52,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:52,736 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:52,737 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 230 transitions, 1544 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:52,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:52,737 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:52,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:53,195 INFO L129 PetriNetUnfolder]: 349/1752 cut-off events. [2022-07-21 08:58:53,195 INFO L130 PetriNetUnfolder]: For 8722/8832 co-relation queries the response was YES. [2022-07-21 08:58:53,208 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6473 conditions, 1752 events. 349/1752 cut-off events. For 8722/8832 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 13020 event pairs, 263 based on Foata normal form. 3/1665 useless extension candidates. Maximal degree in co-relation 6369. Up to 788 conditions per place. [2022-07-21 08:58:53,212 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 64 selfloop transitions, 2 changer transitions 49/258 dead transitions. [2022-07-21 08:58:53,212 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 258 transitions, 2015 flow [2022-07-21 08:58:53,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:58:53,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:58:53,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2653 transitions. [2022-07-21 08:58:53,216 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7623563218390804 [2022-07-21 08:58:53,216 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2653 transitions. [2022-07-21 08:58:53,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2653 transitions. [2022-07-21 08:58:53,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:53,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2653 transitions. [2022-07-21 08:58:53,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.65) internal successors, (2653), 20 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:53,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:53,219 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:53,219 INFO L186 Difference]: Start difference. First operand has 336 places, 230 transitions, 1544 flow. Second operand 20 states and 2653 transitions. [2022-07-21 08:58:53,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 258 transitions, 2015 flow [2022-07-21 08:58:53,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 258 transitions, 1885 flow, removed 25 selfloop flow, removed 25 redundant places. [2022-07-21 08:58:53,252 INFO L242 Difference]: Finished difference. Result has 311 places, 201 transitions, 1054 flow [2022-07-21 08:58:53,253 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1054, PETRI_PLACES=311, PETRI_TRANSITIONS=201} [2022-07-21 08:58:53,253 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 154 predicate places. [2022-07-21 08:58:53,253 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 201 transitions, 1054 flow [2022-07-21 08:58:53,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:53,253 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:53,253 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] [2022-07-21 08:58:53,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-21 08:58:53,254 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:53,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:53,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1844961244, now seen corresponding path program 2 times [2022-07-21 08:58:53,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:53,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117209753] [2022-07-21 08:58:53,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:53,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:53,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:53,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:53,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117209753] [2022-07-21 08:58:53,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117209753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:53,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:53,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:53,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878489797] [2022-07-21 08:58:53,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:53,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:53,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:53,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:53,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:53,332 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:53,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 201 transitions, 1054 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:53,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:53,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:53,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:53,778 INFO L129 PetriNetUnfolder]: 373/1781 cut-off events. [2022-07-21 08:58:53,778 INFO L130 PetriNetUnfolder]: For 8172/8238 co-relation queries the response was YES. [2022-07-21 08:58:53,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6350 conditions, 1781 events. 373/1781 cut-off events. For 8172/8238 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13170 event pairs, 234 based on Foata normal form. 10/1699 useless extension candidates. Maximal degree in co-relation 6260. Up to 732 conditions per place. [2022-07-21 08:58:53,794 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 14 changer transitions 32/283 dead transitions. [2022-07-21 08:58:53,794 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 283 transitions, 2087 flow [2022-07-21 08:58:53,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 08:58:53,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 08:58:53,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2926 transitions. [2022-07-21 08:58:53,796 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-07-21 08:58:53,796 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2926 transitions. [2022-07-21 08:58:53,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2926 transitions. [2022-07-21 08:58:53,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:53,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2926 transitions. [2022-07-21 08:58:53,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 133.0) internal successors, (2926), 22 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:53,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:53,800 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:53,800 INFO L186 Difference]: Start difference. First operand has 311 places, 201 transitions, 1054 flow. Second operand 22 states and 2926 transitions. [2022-07-21 08:58:53,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 283 transitions, 2087 flow [2022-07-21 08:58:53,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 283 transitions, 2001 flow, removed 35 selfloop flow, removed 25 redundant places. [2022-07-21 08:58:53,825 INFO L242 Difference]: Finished difference. Result has 285 places, 214 transitions, 1204 flow [2022-07-21 08:58:53,825 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1204, PETRI_PLACES=285, PETRI_TRANSITIONS=214} [2022-07-21 08:58:53,825 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 128 predicate places. [2022-07-21 08:58:53,825 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 214 transitions, 1204 flow [2022-07-21 08:58:53,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:53,826 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:53,826 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] [2022-07-21 08:58:53,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-21 08:58:53,826 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:53,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash -206622138, now seen corresponding path program 3 times [2022-07-21 08:58:53,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:53,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311326765] [2022-07-21 08:58:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:53,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:53,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:53,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:53,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311326765] [2022-07-21 08:58:53,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311326765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:53,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:53,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:53,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158365546] [2022-07-21 08:58:53,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:53,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:53,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:53,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:53,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:53,895 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:53,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 214 transitions, 1204 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:53,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:53,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:53,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:54,357 INFO L129 PetriNetUnfolder]: 372/1799 cut-off events. [2022-07-21 08:58:54,358 INFO L130 PetriNetUnfolder]: For 11216/11282 co-relation queries the response was YES. [2022-07-21 08:58:54,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7063 conditions, 1799 events. 372/1799 cut-off events. For 11216/11282 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13460 event pairs, 219 based on Foata normal form. 10/1725 useless extension candidates. Maximal degree in co-relation 6976. Up to 679 conditions per place. [2022-07-21 08:58:54,373 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 155 selfloop transitions, 12 changer transitions 46/357 dead transitions. [2022-07-21 08:58:54,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 357 transitions, 3090 flow [2022-07-21 08:58:54,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 08:58:54,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-21 08:58:54,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4111 transitions. [2022-07-21 08:58:54,375 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7621431219873934 [2022-07-21 08:58:54,375 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4111 transitions. [2022-07-21 08:58:54,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4111 transitions. [2022-07-21 08:58:54,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:54,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4111 transitions. [2022-07-21 08:58:54,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 132.61290322580646) internal successors, (4111), 31 states have internal predecessors, (4111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:54,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:54,418 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:54,418 INFO L186 Difference]: Start difference. First operand has 285 places, 214 transitions, 1204 flow. Second operand 31 states and 4111 transitions. [2022-07-21 08:58:54,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 357 transitions, 3090 flow [2022-07-21 08:58:54,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 357 transitions, 2902 flow, removed 94 selfloop flow, removed 9 redundant places. [2022-07-21 08:58:54,449 INFO L242 Difference]: Finished difference. Result has 319 places, 217 transitions, 1301 flow [2022-07-21 08:58:54,449 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1301, PETRI_PLACES=319, PETRI_TRANSITIONS=217} [2022-07-21 08:58:54,450 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 162 predicate places. [2022-07-21 08:58:54,450 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 217 transitions, 1301 flow [2022-07-21 08:58:54,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:54,450 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:54,450 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:54,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-21 08:58:54,450 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:54,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:54,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1403486140, now seen corresponding path program 4 times [2022-07-21 08:58:54,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:54,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530316244] [2022-07-21 08:58:54,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:54,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:54,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:54,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:54,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530316244] [2022-07-21 08:58:54,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530316244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:54,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:54,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:54,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866609006] [2022-07-21 08:58:54,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:54,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:54,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:54,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:54,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:54,522 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:54,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 217 transitions, 1301 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:54,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:54,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:54,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:55,050 INFO L129 PetriNetUnfolder]: 393/1881 cut-off events. [2022-07-21 08:58:55,051 INFO L130 PetriNetUnfolder]: For 14911/14977 co-relation queries the response was YES. [2022-07-21 08:58:55,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7971 conditions, 1881 events. 393/1881 cut-off events. For 14911/14977 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14275 event pairs, 246 based on Foata normal form. 10/1800 useless extension candidates. Maximal degree in co-relation 7866. Up to 787 conditions per place. [2022-07-21 08:58:55,069 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 112 selfloop transitions, 16 changer transitions 40/312 dead transitions. [2022-07-21 08:58:55,070 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 312 transitions, 3030 flow [2022-07-21 08:58:55,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 08:58:55,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-21 08:58:55,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3707 transitions. [2022-07-21 08:58:55,072 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7608784893267652 [2022-07-21 08:58:55,072 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3707 transitions. [2022-07-21 08:58:55,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3707 transitions. [2022-07-21 08:58:55,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:55,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3707 transitions. [2022-07-21 08:58:55,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.39285714285714) internal successors, (3707), 28 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,077 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,077 INFO L186 Difference]: Start difference. First operand has 319 places, 217 transitions, 1301 flow. Second operand 28 states and 3707 transitions. [2022-07-21 08:58:55,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 312 transitions, 3030 flow [2022-07-21 08:58:55,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 312 transitions, 2712 flow, removed 140 selfloop flow, removed 20 redundant places. [2022-07-21 08:58:55,122 INFO L242 Difference]: Finished difference. Result has 324 places, 227 transitions, 1444 flow [2022-07-21 08:58:55,123 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1444, PETRI_PLACES=324, PETRI_TRANSITIONS=227} [2022-07-21 08:58:55,123 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 167 predicate places. [2022-07-21 08:58:55,123 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 227 transitions, 1444 flow [2022-07-21 08:58:55,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,123 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:55,123 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] [2022-07-21 08:58:55,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-21 08:58:55,124 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:55,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:55,124 INFO L85 PathProgramCache]: Analyzing trace with hash -951681074, now seen corresponding path program 5 times [2022-07-21 08:58:55,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:55,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582909987] [2022-07-21 08:58:55,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:55,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:55,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:55,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:55,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582909987] [2022-07-21 08:58:55,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582909987] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:55,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:55,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:55,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459001509] [2022-07-21 08:58:55,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:55,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:55,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:55,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:55,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:55,208 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:55,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 227 transitions, 1444 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:55,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:55,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:55,788 INFO L129 PetriNetUnfolder]: 420/2018 cut-off events. [2022-07-21 08:58:55,788 INFO L130 PetriNetUnfolder]: For 16269/16340 co-relation queries the response was YES. [2022-07-21 08:58:55,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8639 conditions, 2018 events. 420/2018 cut-off events. For 16269/16340 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 15563 event pairs, 267 based on Foata normal form. 10/1939 useless extension candidates. Maximal degree in co-relation 8532. Up to 742 conditions per place. [2022-07-21 08:58:55,811 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 102 selfloop transitions, 24 changer transitions 40/310 dead transitions. [2022-07-21 08:58:55,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 310 transitions, 3043 flow [2022-07-21 08:58:55,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 08:58:55,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-21 08:58:55,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3449 transitions. [2022-07-21 08:58:55,813 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7623784261715296 [2022-07-21 08:58:55,813 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3449 transitions. [2022-07-21 08:58:55,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3449 transitions. [2022-07-21 08:58:55,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:55,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3449 transitions. [2022-07-21 08:58:55,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.65384615384616) internal successors, (3449), 26 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,818 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,818 INFO L186 Difference]: Start difference. First operand has 324 places, 227 transitions, 1444 flow. Second operand 26 states and 3449 transitions. [2022-07-21 08:58:55,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 310 transitions, 3043 flow [2022-07-21 08:58:55,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 310 transitions, 2791 flow, removed 126 selfloop flow, removed 17 redundant places. [2022-07-21 08:58:55,869 INFO L242 Difference]: Finished difference. Result has 335 places, 237 transitions, 1670 flow [2022-07-21 08:58:55,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1670, PETRI_PLACES=335, PETRI_TRANSITIONS=237} [2022-07-21 08:58:55,870 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 178 predicate places. [2022-07-21 08:58:55,870 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 237 transitions, 1670 flow [2022-07-21 08:58:55,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,870 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:55,870 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] [2022-07-21 08:58:55,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-21 08:58:55,871 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:55,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:55,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1565654670, now seen corresponding path program 6 times [2022-07-21 08:58:55,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:55,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640622253] [2022-07-21 08:58:55,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:55,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:55,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:55,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:55,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640622253] [2022-07-21 08:58:55,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640622253] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:55,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:55,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:55,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416871708] [2022-07-21 08:58:55,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:55,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:55,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:55,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:55,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:55,971 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:55,971 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 237 transitions, 1670 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:55,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:55,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:56,523 INFO L129 PetriNetUnfolder]: 413/1953 cut-off events. [2022-07-21 08:58:56,524 INFO L130 PetriNetUnfolder]: For 18007/18086 co-relation queries the response was YES. [2022-07-21 08:58:56,539 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8933 conditions, 1953 events. 413/1953 cut-off events. For 18007/18086 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14975 event pairs, 263 based on Foata normal form. 11/1864 useless extension candidates. Maximal degree in co-relation 8819. Up to 832 conditions per place. [2022-07-21 08:58:56,544 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 118 selfloop transitions, 30 changer transitions 36/328 dead transitions. [2022-07-21 08:58:56,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 328 transitions, 3657 flow [2022-07-21 08:58:56,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-21 08:58:56,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-07-21 08:58:56,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3312 transitions. [2022-07-21 08:58:56,546 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7613793103448275 [2022-07-21 08:58:56,546 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3312 transitions. [2022-07-21 08:58:56,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3312 transitions. [2022-07-21 08:58:56,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:56,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3312 transitions. [2022-07-21 08:58:56,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 132.48) internal successors, (3312), 25 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:56,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:56,550 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:56,550 INFO L186 Difference]: Start difference. First operand has 335 places, 237 transitions, 1670 flow. Second operand 25 states and 3312 transitions. [2022-07-21 08:58:56,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 328 transitions, 3657 flow [2022-07-21 08:58:56,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 328 transitions, 3270 flow, removed 184 selfloop flow, removed 16 redundant places. [2022-07-21 08:58:56,614 INFO L242 Difference]: Finished difference. Result has 346 places, 254 transitions, 2026 flow [2022-07-21 08:58:56,614 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2026, PETRI_PLACES=346, PETRI_TRANSITIONS=254} [2022-07-21 08:58:56,615 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 189 predicate places. [2022-07-21 08:58:56,615 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 254 transitions, 2026 flow [2022-07-21 08:58:56,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:56,615 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:56,615 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] [2022-07-21 08:58:56,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-21 08:58:56,615 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:56,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:56,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1053349864, now seen corresponding path program 7 times [2022-07-21 08:58:56,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:56,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110850167] [2022-07-21 08:58:56,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:56,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:56,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:56,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110850167] [2022-07-21 08:58:56,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110850167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:56,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:56,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:56,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495337507] [2022-07-21 08:58:56,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:56,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:56,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:56,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:56,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:56,708 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:56,709 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 254 transitions, 2026 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:56,709 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:56,709 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:56,709 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:57,277 INFO L129 PetriNetUnfolder]: 409/1958 cut-off events. [2022-07-21 08:58:57,277 INFO L130 PetriNetUnfolder]: For 18408/18495 co-relation queries the response was YES. [2022-07-21 08:58:57,295 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8973 conditions, 1958 events. 409/1958 cut-off events. For 18408/18495 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 15071 event pairs, 254 based on Foata normal form. 16/1878 useless extension candidates. Maximal degree in co-relation 8853. Up to 816 conditions per place. [2022-07-21 08:58:57,300 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 123 selfloop transitions, 34 changer transitions 34/335 dead transitions. [2022-07-21 08:58:57,301 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 335 transitions, 3754 flow [2022-07-21 08:58:57,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 08:58:57,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 08:58:57,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3183 transitions. [2022-07-21 08:58:57,303 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7622126436781609 [2022-07-21 08:58:57,303 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3183 transitions. [2022-07-21 08:58:57,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3183 transitions. [2022-07-21 08:58:57,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:57,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3183 transitions. [2022-07-21 08:58:57,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.625) internal successors, (3183), 24 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:57,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:57,307 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:57,307 INFO L186 Difference]: Start difference. First operand has 346 places, 254 transitions, 2026 flow. Second operand 24 states and 3183 transitions. [2022-07-21 08:58:57,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 335 transitions, 3754 flow [2022-07-21 08:58:57,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 335 transitions, 3292 flow, removed 214 selfloop flow, removed 14 redundant places. [2022-07-21 08:58:57,376 INFO L242 Difference]: Finished difference. Result has 355 places, 261 transitions, 2068 flow [2022-07-21 08:58:57,376 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1824, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2068, PETRI_PLACES=355, PETRI_TRANSITIONS=261} [2022-07-21 08:58:57,376 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 198 predicate places. [2022-07-21 08:58:57,376 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 261 transitions, 2068 flow [2022-07-21 08:58:57,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:57,377 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:57,377 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] [2022-07-21 08:58:57,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-21 08:58:57,377 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:57,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:57,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1020921776, now seen corresponding path program 8 times [2022-07-21 08:58:57,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:57,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816995441] [2022-07-21 08:58:57,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:57,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:57,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:57,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:57,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816995441] [2022-07-21 08:58:57,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816995441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:57,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:57,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:57,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578543366] [2022-07-21 08:58:57,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:57,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:57,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:57,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:57,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:57,454 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:57,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 261 transitions, 2068 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:57,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:57,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:57,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:58,026 INFO L129 PetriNetUnfolder]: 408/2015 cut-off events. [2022-07-21 08:58:58,026 INFO L130 PetriNetUnfolder]: For 17400/17481 co-relation queries the response was YES. [2022-07-21 08:58:58,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8873 conditions, 2015 events. 408/2015 cut-off events. For 17400/17481 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 15661 event pairs, 275 based on Foata normal form. 10/1933 useless extension candidates. Maximal degree in co-relation 8751. Up to 803 conditions per place. [2022-07-21 08:58:58,047 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 122 selfloop transitions, 28 changer transitions 43/337 dead transitions. [2022-07-21 08:58:58,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 337 transitions, 3618 flow [2022-07-21 08:58:58,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-21 08:58:58,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-21 08:58:58,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3580 transitions. [2022-07-21 08:58:58,050 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7620263942103023 [2022-07-21 08:58:58,050 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3580 transitions. [2022-07-21 08:58:58,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3580 transitions. [2022-07-21 08:58:58,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:58,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3580 transitions. [2022-07-21 08:58:58,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.59259259259258) internal successors, (3580), 27 states have internal predecessors, (3580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:58,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:58,057 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:58,057 INFO L186 Difference]: Start difference. First operand has 355 places, 261 transitions, 2068 flow. Second operand 27 states and 3580 transitions. [2022-07-21 08:58:58,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 337 transitions, 3618 flow [2022-07-21 08:58:58,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 337 transitions, 3469 flow, removed 64 selfloop flow, removed 11 redundant places. [2022-07-21 08:58:58,117 INFO L242 Difference]: Finished difference. Result has 377 places, 265 transitions, 2217 flow [2022-07-21 08:58:58,118 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1999, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2217, PETRI_PLACES=377, PETRI_TRANSITIONS=265} [2022-07-21 08:58:58,118 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 220 predicate places. [2022-07-21 08:58:58,118 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 265 transitions, 2217 flow [2022-07-21 08:58:58,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:58,118 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:58,118 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] [2022-07-21 08:58:58,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-21 08:58:58,119 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:58,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:58,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1494954714, now seen corresponding path program 9 times [2022-07-21 08:58:58,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:58,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928113486] [2022-07-21 08:58:58,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:58,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:58,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:58,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:58,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928113486] [2022-07-21 08:58:58,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928113486] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:58,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:58,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:58,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366472201] [2022-07-21 08:58:58,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:58,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:58,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:58,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:58,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:58,198 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:58,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 265 transitions, 2217 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:58,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:58,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:58,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:58,674 INFO L129 PetriNetUnfolder]: 398/1963 cut-off events. [2022-07-21 08:58:58,674 INFO L130 PetriNetUnfolder]: For 17968/18066 co-relation queries the response was YES. [2022-07-21 08:58:58,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8828 conditions, 1963 events. 398/1963 cut-off events. For 17968/18066 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 15185 event pairs, 257 based on Foata normal form. 20/1887 useless extension candidates. Maximal degree in co-relation 8694. Up to 822 conditions per place. [2022-07-21 08:58:58,699 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 118 selfloop transitions, 36 changer transitions 32/330 dead transitions. [2022-07-21 08:58:58,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 330 transitions, 3617 flow [2022-07-21 08:58:58,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 08:58:58,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-21 08:58:58,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2529 transitions. [2022-07-21 08:58:58,701 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.76497277676951 [2022-07-21 08:58:58,701 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2529 transitions. [2022-07-21 08:58:58,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2529 transitions. [2022-07-21 08:58:58,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:58,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2529 transitions. [2022-07-21 08:58:58,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.10526315789474) internal successors, (2529), 19 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:58,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:58,704 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:58,704 INFO L186 Difference]: Start difference. First operand has 377 places, 265 transitions, 2217 flow. Second operand 19 states and 2529 transitions. [2022-07-21 08:58:58,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 330 transitions, 3617 flow [2022-07-21 08:58:58,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 330 transitions, 3423 flow, removed 75 selfloop flow, removed 21 redundant places. [2022-07-21 08:58:58,788 INFO L242 Difference]: Finished difference. Result has 364 places, 268 transitions, 2266 flow [2022-07-21 08:58:58,789 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2111, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2266, PETRI_PLACES=364, PETRI_TRANSITIONS=268} [2022-07-21 08:58:58,789 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 207 predicate places. [2022-07-21 08:58:58,789 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 268 transitions, 2266 flow [2022-07-21 08:58:58,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:58,790 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:58,790 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] [2022-07-21 08:58:58,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-21 08:58:58,790 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:58,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:58,791 INFO L85 PathProgramCache]: Analyzing trace with hash 2070079914, now seen corresponding path program 10 times [2022-07-21 08:58:58,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:58,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646035427] [2022-07-21 08:58:58,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:58,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:58,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:58,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:58,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646035427] [2022-07-21 08:58:58,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646035427] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:58,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:58,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:58,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442204358] [2022-07-21 08:58:58,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:58,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:58,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:58,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:58,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:58,870 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:58,870 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 268 transitions, 2266 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:58,870 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:58,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:58,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:59,343 INFO L129 PetriNetUnfolder]: 384/1916 cut-off events. [2022-07-21 08:58:59,343 INFO L130 PetriNetUnfolder]: For 15782/15870 co-relation queries the response was YES. [2022-07-21 08:58:59,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8339 conditions, 1916 events. 384/1916 cut-off events. For 15782/15870 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14677 event pairs, 250 based on Foata normal form. 12/1836 useless extension candidates. Maximal degree in co-relation 8215. Up to 805 conditions per place. [2022-07-21 08:58:59,365 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 113 selfloop transitions, 20 changer transitions 36/313 dead transitions. [2022-07-21 08:58:59,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 313 transitions, 3214 flow [2022-07-21 08:58:59,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:58:59,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:58:59,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2651 transitions. [2022-07-21 08:58:59,367 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7617816091954023 [2022-07-21 08:58:59,367 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2651 transitions. [2022-07-21 08:58:59,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2651 transitions. [2022-07-21 08:58:59,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:59,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2651 transitions. [2022-07-21 08:58:59,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.55) internal successors, (2651), 20 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:59,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:59,371 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:59,371 INFO L186 Difference]: Start difference. First operand has 364 places, 268 transitions, 2266 flow. Second operand 20 states and 2651 transitions. [2022-07-21 08:58:59,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 313 transitions, 3214 flow [2022-07-21 08:58:59,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 313 transitions, 3019 flow, removed 47 selfloop flow, removed 15 redundant places. [2022-07-21 08:58:59,435 INFO L242 Difference]: Finished difference. Result has 367 places, 247 transitions, 1854 flow [2022-07-21 08:58:59,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2111, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1854, PETRI_PLACES=367, PETRI_TRANSITIONS=247} [2022-07-21 08:58:59,436 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 210 predicate places. [2022-07-21 08:58:59,436 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 247 transitions, 1854 flow [2022-07-21 08:58:59,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:59,436 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:59,436 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] [2022-07-21 08:58:59,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-21 08:58:59,436 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:59,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:59,436 INFO L85 PathProgramCache]: Analyzing trace with hash 832462464, now seen corresponding path program 11 times [2022-07-21 08:58:59,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:59,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985088361] [2022-07-21 08:58:59,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:59,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:59,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:59,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:59,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985088361] [2022-07-21 08:58:59,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985088361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:59,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:59,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:58:59,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133268389] [2022-07-21 08:58:59,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:59,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:58:59,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:59,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:58:59,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:58:59,513 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:58:59,513 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 247 transitions, 1854 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:59,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:59,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:58:59,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:00,029 INFO L129 PetriNetUnfolder]: 388/1877 cut-off events. [2022-07-21 08:59:00,029 INFO L130 PetriNetUnfolder]: For 15179/15262 co-relation queries the response was YES. [2022-07-21 08:59:00,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8323 conditions, 1877 events. 388/1877 cut-off events. For 15179/15262 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14228 event pairs, 262 based on Foata normal form. 12/1791 useless extension candidates. Maximal degree in co-relation 8201. Up to 805 conditions per place. [2022-07-21 08:59:00,050 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 101 selfloop transitions, 31 changer transitions 27/303 dead transitions. [2022-07-21 08:59:00,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 303 transitions, 3080 flow [2022-07-21 08:59:00,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 08:59:00,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 08:59:00,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2919 transitions. [2022-07-21 08:59:00,052 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.762539184952978 [2022-07-21 08:59:00,052 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2919 transitions. [2022-07-21 08:59:00,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2919 transitions. [2022-07-21 08:59:00,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:00,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2919 transitions. [2022-07-21 08:59:00,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.6818181818182) internal successors, (2919), 22 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:00,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:00,056 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:00,056 INFO L186 Difference]: Start difference. First operand has 367 places, 247 transitions, 1854 flow. Second operand 22 states and 2919 transitions. [2022-07-21 08:59:00,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 303 transitions, 3080 flow [2022-07-21 08:59:00,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 303 transitions, 2884 flow, removed 32 selfloop flow, removed 20 redundant places. [2022-07-21 08:59:00,112 INFO L242 Difference]: Finished difference. Result has 349 places, 259 transitions, 2093 flow [2022-07-21 08:59:00,112 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2093, PETRI_PLACES=349, PETRI_TRANSITIONS=259} [2022-07-21 08:59:00,113 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 192 predicate places. [2022-07-21 08:59:00,113 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 259 transitions, 2093 flow [2022-07-21 08:59:00,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:00,113 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:00,113 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] [2022-07-21 08:59:00,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-21 08:59:00,113 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:00,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:00,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1639997654, now seen corresponding path program 12 times [2022-07-21 08:59:00,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:00,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800624335] [2022-07-21 08:59:00,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:00,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:00,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:00,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:00,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800624335] [2022-07-21 08:59:00,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800624335] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:00,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:00,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:00,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318557638] [2022-07-21 08:59:00,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:00,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:00,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:00,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:00,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:00,200 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:00,201 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 259 transitions, 2093 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:00,201 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:00,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:00,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:00,695 INFO L129 PetriNetUnfolder]: 394/1938 cut-off events. [2022-07-21 08:59:00,695 INFO L130 PetriNetUnfolder]: For 14957/15036 co-relation queries the response was YES. [2022-07-21 08:59:00,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8434 conditions, 1938 events. 394/1938 cut-off events. For 14957/15036 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14839 event pairs, 280 based on Foata normal form. 10/1852 useless extension candidates. Maximal degree in co-relation 8317. Up to 805 conditions per place. [2022-07-21 08:59:00,715 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 38 changer transitions 27/316 dead transitions. [2022-07-21 08:59:00,716 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 316 transitions, 3351 flow [2022-07-21 08:59:00,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:59:00,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:59:00,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2662 transitions. [2022-07-21 08:59:00,717 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7649425287356322 [2022-07-21 08:59:00,717 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2662 transitions. [2022-07-21 08:59:00,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2662 transitions. [2022-07-21 08:59:00,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:00,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2662 transitions. [2022-07-21 08:59:00,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.1) internal successors, (2662), 20 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:00,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:00,721 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:00,721 INFO L186 Difference]: Start difference. First operand has 349 places, 259 transitions, 2093 flow. Second operand 20 states and 2662 transitions. [2022-07-21 08:59:00,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 316 transitions, 3351 flow [2022-07-21 08:59:00,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 316 transitions, 3151 flow, removed 92 selfloop flow, removed 5 redundant places. [2022-07-21 08:59:00,779 INFO L242 Difference]: Finished difference. Result has 365 places, 271 transitions, 2319 flow [2022-07-21 08:59:00,780 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1983, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2319, PETRI_PLACES=365, PETRI_TRANSITIONS=271} [2022-07-21 08:59:00,780 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 208 predicate places. [2022-07-21 08:59:00,780 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 271 transitions, 2319 flow [2022-07-21 08:59:00,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:00,780 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:00,780 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] [2022-07-21 08:59:00,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-21 08:59:00,781 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:00,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:00,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1097966978, now seen corresponding path program 13 times [2022-07-21 08:59:00,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:00,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598026524] [2022-07-21 08:59:00,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:00,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:00,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:00,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:00,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598026524] [2022-07-21 08:59:00,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598026524] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:00,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:00,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:00,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303243620] [2022-07-21 08:59:00,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:00,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:00,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:00,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:00,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:00,868 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:00,868 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 271 transitions, 2319 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:00,868 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:00,868 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:00,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:01,367 INFO L129 PetriNetUnfolder]: 390/1902 cut-off events. [2022-07-21 08:59:01,367 INFO L130 PetriNetUnfolder]: For 14768/14851 co-relation queries the response was YES. [2022-07-21 08:59:01,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8402 conditions, 1902 events. 390/1902 cut-off events. For 14768/14851 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14481 event pairs, 261 based on Foata normal form. 12/1816 useless extension candidates. Maximal degree in co-relation 8276. Up to 805 conditions per place. [2022-07-21 08:59:01,388 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 111 selfloop transitions, 37 changer transitions 29/321 dead transitions. [2022-07-21 08:59:01,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 321 transitions, 3495 flow [2022-07-21 08:59:01,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 08:59:01,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 08:59:01,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2792 transitions. [2022-07-21 08:59:01,390 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7640941434044882 [2022-07-21 08:59:01,390 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2792 transitions. [2022-07-21 08:59:01,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2792 transitions. [2022-07-21 08:59:01,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:01,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2792 transitions. [2022-07-21 08:59:01,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.95238095238096) internal successors, (2792), 21 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:01,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:01,394 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:01,394 INFO L186 Difference]: Start difference. First operand has 365 places, 271 transitions, 2319 flow. Second operand 21 states and 2792 transitions. [2022-07-21 08:59:01,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 321 transitions, 3495 flow [2022-07-21 08:59:01,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 321 transitions, 3371 flow, removed 38 selfloop flow, removed 8 redundant places. [2022-07-21 08:59:01,464 INFO L242 Difference]: Finished difference. Result has 380 places, 277 transitions, 2487 flow [2022-07-21 08:59:01,464 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2232, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2487, PETRI_PLACES=380, PETRI_TRANSITIONS=277} [2022-07-21 08:59:01,464 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 223 predicate places. [2022-07-21 08:59:01,464 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 277 transitions, 2487 flow [2022-07-21 08:59:01,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:01,465 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:01,465 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] [2022-07-21 08:59:01,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-21 08:59:01,465 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:01,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:01,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1918666362, now seen corresponding path program 14 times [2022-07-21 08:59:01,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:01,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521800469] [2022-07-21 08:59:01,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:01,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:01,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:01,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:01,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521800469] [2022-07-21 08:59:01,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521800469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:01,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:01,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:01,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133927963] [2022-07-21 08:59:01,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:01,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:01,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:01,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:01,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:01,550 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:01,550 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 277 transitions, 2487 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:01,550 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:01,550 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:01,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:02,094 INFO L129 PetriNetUnfolder]: 398/1951 cut-off events. [2022-07-21 08:59:02,094 INFO L130 PetriNetUnfolder]: For 15501/15582 co-relation queries the response was YES. [2022-07-21 08:59:02,111 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8645 conditions, 1951 events. 398/1951 cut-off events. For 15501/15582 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 15002 event pairs, 259 based on Foata normal form. 12/1866 useless extension candidates. Maximal degree in co-relation 8513. Up to 808 conditions per place. [2022-07-21 08:59:02,115 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 115 selfloop transitions, 41 changer transitions 38/338 dead transitions. [2022-07-21 08:59:02,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 338 transitions, 3784 flow [2022-07-21 08:59:02,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 08:59:02,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 08:59:02,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3187 transitions. [2022-07-21 08:59:02,117 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7631704980842912 [2022-07-21 08:59:02,117 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3187 transitions. [2022-07-21 08:59:02,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3187 transitions. [2022-07-21 08:59:02,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:02,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3187 transitions. [2022-07-21 08:59:02,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.79166666666666) internal successors, (3187), 24 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:02,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:02,121 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:02,121 INFO L186 Difference]: Start difference. First operand has 380 places, 277 transitions, 2487 flow. Second operand 24 states and 3187 transitions. [2022-07-21 08:59:02,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 338 transitions, 3784 flow [2022-07-21 08:59:02,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 338 transitions, 3654 flow, removed 38 selfloop flow, removed 8 redundant places. [2022-07-21 08:59:02,189 INFO L242 Difference]: Finished difference. Result has 400 places, 282 transitions, 2628 flow [2022-07-21 08:59:02,189 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2391, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2628, PETRI_PLACES=400, PETRI_TRANSITIONS=282} [2022-07-21 08:59:02,189 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 243 predicate places. [2022-07-21 08:59:02,190 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 282 transitions, 2628 flow [2022-07-21 08:59:02,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:02,190 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:02,190 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] [2022-07-21 08:59:02,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-21 08:59:02,190 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:02,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:02,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1461453300, now seen corresponding path program 15 times [2022-07-21 08:59:02,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:02,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401130974] [2022-07-21 08:59:02,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:02,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:02,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:02,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:02,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401130974] [2022-07-21 08:59:02,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401130974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:02,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:02,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:02,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732960959] [2022-07-21 08:59:02,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:02,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:02,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:02,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:02,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:02,289 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:02,290 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 282 transitions, 2628 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:02,290 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:02,290 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:02,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:02,815 INFO L129 PetriNetUnfolder]: 394/1971 cut-off events. [2022-07-21 08:59:02,816 INFO L130 PetriNetUnfolder]: For 16835/16911 co-relation queries the response was YES. [2022-07-21 08:59:02,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8738 conditions, 1971 events. 394/1971 cut-off events. For 16835/16911 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 15253 event pairs, 274 based on Foata normal form. 10/1884 useless extension candidates. Maximal degree in co-relation 8598. Up to 804 conditions per place. [2022-07-21 08:59:02,840 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 119 selfloop transitions, 36 changer transitions 43/342 dead transitions. [2022-07-21 08:59:02,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 342 transitions, 3967 flow [2022-07-21 08:59:02,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-21 08:59:02,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-21 08:59:02,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3056 transitions. [2022-07-21 08:59:02,842 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7636181909045477 [2022-07-21 08:59:02,842 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3056 transitions. [2022-07-21 08:59:02,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3056 transitions. [2022-07-21 08:59:02,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:02,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3056 transitions. [2022-07-21 08:59:02,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.8695652173913) internal successors, (3056), 23 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:02,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:02,846 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:02,846 INFO L186 Difference]: Start difference. First operand has 400 places, 282 transitions, 2628 flow. Second operand 23 states and 3056 transitions. [2022-07-21 08:59:02,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 342 transitions, 3967 flow [2022-07-21 08:59:02,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 342 transitions, 3774 flow, removed 52 selfloop flow, removed 16 redundant places. [2022-07-21 08:59:02,922 INFO L242 Difference]: Finished difference. Result has 404 places, 281 transitions, 2606 flow [2022-07-21 08:59:02,923 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2501, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2606, PETRI_PLACES=404, PETRI_TRANSITIONS=281} [2022-07-21 08:59:02,923 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 247 predicate places. [2022-07-21 08:59:02,923 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 281 transitions, 2606 flow [2022-07-21 08:59:02,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:02,923 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:02,923 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] [2022-07-21 08:59:02,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-21 08:59:02,924 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:02,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:02,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1776543720, now seen corresponding path program 16 times [2022-07-21 08:59:02,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:02,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446205462] [2022-07-21 08:59:02,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:02,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:03,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:03,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:03,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446205462] [2022-07-21 08:59:03,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446205462] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:03,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:03,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:03,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068728088] [2022-07-21 08:59:03,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:03,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:03,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:03,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:03,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:03,017 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:03,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 281 transitions, 2606 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:03,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:03,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:03,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:03,542 INFO L129 PetriNetUnfolder]: 379/1918 cut-off events. [2022-07-21 08:59:03,542 INFO L130 PetriNetUnfolder]: For 15723/15799 co-relation queries the response was YES. [2022-07-21 08:59:03,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8343 conditions, 1918 events. 379/1918 cut-off events. For 15723/15799 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14719 event pairs, 275 based on Foata normal form. 10/1833 useless extension candidates. Maximal degree in co-relation 8202. Up to 801 conditions per place. [2022-07-21 08:59:03,566 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 25 changer transitions 36/312 dead transitions. [2022-07-21 08:59:03,566 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 312 transitions, 3348 flow [2022-07-21 08:59:03,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:59:03,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:59:03,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2658 transitions. [2022-07-21 08:59:03,568 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7637931034482759 [2022-07-21 08:59:03,568 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2658 transitions. [2022-07-21 08:59:03,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2658 transitions. [2022-07-21 08:59:03,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:03,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2658 transitions. [2022-07-21 08:59:03,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.9) internal successors, (2658), 20 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:03,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:03,571 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:03,571 INFO L186 Difference]: Start difference. First operand has 404 places, 281 transitions, 2606 flow. Second operand 20 states and 2658 transitions. [2022-07-21 08:59:03,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 312 transitions, 3348 flow [2022-07-21 08:59:03,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 312 transitions, 3150 flow, removed 37 selfloop flow, removed 22 redundant places. [2022-07-21 08:59:03,637 INFO L242 Difference]: Finished difference. Result has 394 places, 263 transitions, 2191 flow [2022-07-21 08:59:03,637 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2439, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2191, PETRI_PLACES=394, PETRI_TRANSITIONS=263} [2022-07-21 08:59:03,638 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 237 predicate places. [2022-07-21 08:59:03,638 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 263 transitions, 2191 flow [2022-07-21 08:59:03,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:03,638 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:03,638 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] [2022-07-21 08:59:03,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-21 08:59:03,638 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:03,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:03,638 INFO L85 PathProgramCache]: Analyzing trace with hash 64360534, now seen corresponding path program 17 times [2022-07-21 08:59:03,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:03,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024539751] [2022-07-21 08:59:03,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:03,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:03,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:03,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:03,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024539751] [2022-07-21 08:59:03,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024539751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:03,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:03,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:03,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402274708] [2022-07-21 08:59:03,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:03,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:03,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:03,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:03,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:03,731 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:03,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 263 transitions, 2191 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:03,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:03,732 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:03,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:04,270 INFO L129 PetriNetUnfolder]: 374/1862 cut-off events. [2022-07-21 08:59:04,270 INFO L130 PetriNetUnfolder]: For 14373/14454 co-relation queries the response was YES. [2022-07-21 08:59:04,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8009 conditions, 1862 events. 374/1862 cut-off events. For 14373/14454 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14164 event pairs, 257 based on Foata normal form. 12/1778 useless extension candidates. Maximal degree in co-relation 7877. Up to 801 conditions per place. [2022-07-21 08:59:04,287 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 21 changer transitions 34/299 dead transitions. [2022-07-21 08:59:04,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 299 transitions, 2997 flow [2022-07-21 08:59:04,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:59:04,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:59:04,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2656 transitions. [2022-07-21 08:59:04,289 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7632183908045977 [2022-07-21 08:59:04,289 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2656 transitions. [2022-07-21 08:59:04,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2656 transitions. [2022-07-21 08:59:04,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:04,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2656 transitions. [2022-07-21 08:59:04,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.8) internal successors, (2656), 20 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:04,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:04,293 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:04,293 INFO L186 Difference]: Start difference. First operand has 394 places, 263 transitions, 2191 flow. Second operand 20 states and 2656 transitions. [2022-07-21 08:59:04,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 299 transitions, 2997 flow [2022-07-21 08:59:04,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 299 transitions, 2775 flow, removed 24 selfloop flow, removed 23 redundant places. [2022-07-21 08:59:04,351 INFO L242 Difference]: Finished difference. Result has 373 places, 252 transitions, 1906 flow [2022-07-21 08:59:04,351 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2019, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1906, PETRI_PLACES=373, PETRI_TRANSITIONS=252} [2022-07-21 08:59:04,351 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 216 predicate places. [2022-07-21 08:59:04,351 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 252 transitions, 1906 flow [2022-07-21 08:59:04,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:04,352 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:04,352 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] [2022-07-21 08:59:04,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-21 08:59:04,352 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:04,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:04,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1103255976, now seen corresponding path program 18 times [2022-07-21 08:59:04,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:04,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71081532] [2022-07-21 08:59:04,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:04,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:04,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:04,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71081532] [2022-07-21 08:59:04,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71081532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:04,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:04,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:04,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035220895] [2022-07-21 08:59:04,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:04,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:04,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:04,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:04,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:04,444 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:04,444 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 252 transitions, 1906 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:04,444 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:04,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:04,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:04,894 INFO L129 PetriNetUnfolder]: 360/1805 cut-off events. [2022-07-21 08:59:04,894 INFO L130 PetriNetUnfolder]: For 13070/13151 co-relation queries the response was YES. [2022-07-21 08:59:04,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7539 conditions, 1805 events. 360/1805 cut-off events. For 13070/13151 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13546 event pairs, 254 based on Foata normal form. 12/1724 useless extension candidates. Maximal degree in co-relation 7413. Up to 783 conditions per place. [2022-07-21 08:59:04,915 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 90 selfloop transitions, 6 changer transitions 38/278 dead transitions. [2022-07-21 08:59:04,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 278 transitions, 2483 flow [2022-07-21 08:59:04,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 08:59:04,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-21 08:59:04,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2516 transitions. [2022-07-21 08:59:04,917 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7610405323653963 [2022-07-21 08:59:04,917 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2516 transitions. [2022-07-21 08:59:04,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2516 transitions. [2022-07-21 08:59:04,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:04,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2516 transitions. [2022-07-21 08:59:04,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 132.42105263157896) internal successors, (2516), 19 states have internal predecessors, (2516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:04,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:04,920 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:04,920 INFO L186 Difference]: Start difference. First operand has 373 places, 252 transitions, 1906 flow. Second operand 19 states and 2516 transitions. [2022-07-21 08:59:04,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 278 transitions, 2483 flow [2022-07-21 08:59:04,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 278 transitions, 2353 flow, removed 24 selfloop flow, removed 23 redundant places. [2022-07-21 08:59:04,976 INFO L242 Difference]: Finished difference. Result has 354 places, 227 transitions, 1467 flow [2022-07-21 08:59:04,976 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1797, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1467, PETRI_PLACES=354, PETRI_TRANSITIONS=227} [2022-07-21 08:59:04,977 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 197 predicate places. [2022-07-21 08:59:04,977 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 227 transitions, 1467 flow [2022-07-21 08:59:04,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:04,977 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:04,977 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] [2022-07-21 08:59:04,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-21 08:59:04,977 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:04,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:04,978 INFO L85 PathProgramCache]: Analyzing trace with hash 692010612, now seen corresponding path program 19 times [2022-07-21 08:59:04,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:04,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080127540] [2022-07-21 08:59:04,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:04,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:05,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:05,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:05,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080127540] [2022-07-21 08:59:05,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080127540] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:05,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:05,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:05,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995052836] [2022-07-21 08:59:05,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:05,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:05,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:05,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:05,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:05,066 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:05,066 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 227 transitions, 1467 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:05,066 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:05,066 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:05,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:05,606 INFO L129 PetriNetUnfolder]: 375/1839 cut-off events. [2022-07-21 08:59:05,606 INFO L130 PetriNetUnfolder]: For 13344/13416 co-relation queries the response was YES. [2022-07-21 08:59:05,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7719 conditions, 1839 events. 375/1839 cut-off events. For 13344/13416 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13826 event pairs, 235 based on Foata normal form. 10/1763 useless extension candidates. Maximal degree in co-relation 7603. Up to 732 conditions per place. [2022-07-21 08:59:05,626 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 108 selfloop transitions, 30 changer transitions 38/320 dead transitions. [2022-07-21 08:59:05,626 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 320 transitions, 3059 flow [2022-07-21 08:59:05,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 08:59:05,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-21 08:59:05,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3703 transitions. [2022-07-21 08:59:05,628 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2022-07-21 08:59:05,628 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3703 transitions. [2022-07-21 08:59:05,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3703 transitions. [2022-07-21 08:59:05,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:05,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3703 transitions. [2022-07-21 08:59:05,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.25) internal successors, (3703), 28 states have internal predecessors, (3703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:05,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:05,633 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:05,633 INFO L186 Difference]: Start difference. First operand has 354 places, 227 transitions, 1467 flow. Second operand 28 states and 3703 transitions. [2022-07-21 08:59:05,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 320 transitions, 3059 flow [2022-07-21 08:59:05,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 320 transitions, 2879 flow, removed 39 selfloop flow, removed 19 redundant places. [2022-07-21 08:59:05,680 INFO L242 Difference]: Finished difference. Result has 343 places, 242 transitions, 1737 flow [2022-07-21 08:59:05,680 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1737, PETRI_PLACES=343, PETRI_TRANSITIONS=242} [2022-07-21 08:59:05,680 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 186 predicate places. [2022-07-21 08:59:05,681 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 242 transitions, 1737 flow [2022-07-21 08:59:05,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:05,681 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:05,681 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:05,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-07-21 08:59:05,681 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:05,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:05,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1243327188, now seen corresponding path program 20 times [2022-07-21 08:59:05,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:05,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174455775] [2022-07-21 08:59:05,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:05,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:05,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:05,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:05,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174455775] [2022-07-21 08:59:05,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174455775] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:05,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:05,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:05,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865559730] [2022-07-21 08:59:05,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:05,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:05,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:05,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:05,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:05,760 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:05,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 242 transitions, 1737 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:05,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:05,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:05,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:06,295 INFO L129 PetriNetUnfolder]: 375/1828 cut-off events. [2022-07-21 08:59:06,295 INFO L130 PetriNetUnfolder]: For 12637/12709 co-relation queries the response was YES. [2022-07-21 08:59:06,311 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7789 conditions, 1828 events. 375/1828 cut-off events. For 12637/12709 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13763 event pairs, 242 based on Foata normal form. 10/1743 useless extension candidates. Maximal degree in co-relation 7669. Up to 738 conditions per place. [2022-07-21 08:59:06,316 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 101 selfloop transitions, 34 changer transitions 35/314 dead transitions. [2022-07-21 08:59:06,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 314 transitions, 3162 flow [2022-07-21 08:59:06,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 08:59:06,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-21 08:59:06,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3446 transitions. [2022-07-21 08:59:06,318 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7617152961980548 [2022-07-21 08:59:06,318 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3446 transitions. [2022-07-21 08:59:06,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3446 transitions. [2022-07-21 08:59:06,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:06,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3446 transitions. [2022-07-21 08:59:06,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.53846153846155) internal successors, (3446), 26 states have internal predecessors, (3446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:06,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:06,323 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:06,323 INFO L186 Difference]: Start difference. First operand has 343 places, 242 transitions, 1737 flow. Second operand 26 states and 3446 transitions. [2022-07-21 08:59:06,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 314 transitions, 3162 flow [2022-07-21 08:59:06,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 314 transitions, 2981 flow, removed 71 selfloop flow, removed 17 redundant places. [2022-07-21 08:59:06,372 INFO L242 Difference]: Finished difference. Result has 354 places, 256 transitions, 2053 flow [2022-07-21 08:59:06,373 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1654, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2053, PETRI_PLACES=354, PETRI_TRANSITIONS=256} [2022-07-21 08:59:06,373 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 197 predicate places. [2022-07-21 08:59:06,373 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 256 transitions, 2053 flow [2022-07-21 08:59:06,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:06,374 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:06,374 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] [2022-07-21 08:59:06,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-07-21 08:59:06,374 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:06,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:06,374 INFO L85 PathProgramCache]: Analyzing trace with hash 282742496, now seen corresponding path program 21 times [2022-07-21 08:59:06,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:06,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305334846] [2022-07-21 08:59:06,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:06,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:06,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:06,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:06,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305334846] [2022-07-21 08:59:06,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305334846] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:06,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:06,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:06,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404282155] [2022-07-21 08:59:06,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:06,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:06,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:06,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:06,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:06,460 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:06,460 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 256 transitions, 2053 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:06,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:06,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:06,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:07,026 INFO L129 PetriNetUnfolder]: 371/1831 cut-off events. [2022-07-21 08:59:07,026 INFO L130 PetriNetUnfolder]: For 13978/14050 co-relation queries the response was YES. [2022-07-21 08:59:07,043 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7956 conditions, 1831 events. 371/1831 cut-off events. For 13978/14050 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13851 event pairs, 240 based on Foata normal form. 10/1748 useless extension candidates. Maximal degree in co-relation 7831. Up to 736 conditions per place. [2022-07-21 08:59:07,047 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 105 selfloop transitions, 36 changer transitions 39/324 dead transitions. [2022-07-21 08:59:07,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 324 transitions, 3432 flow [2022-07-21 08:59:07,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-21 08:59:07,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-21 08:59:07,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3575 transitions. [2022-07-21 08:59:07,050 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7609621115368241 [2022-07-21 08:59:07,050 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3575 transitions. [2022-07-21 08:59:07,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3575 transitions. [2022-07-21 08:59:07,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:07,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3575 transitions. [2022-07-21 08:59:07,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.40740740740742) internal successors, (3575), 27 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:07,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:07,054 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:07,054 INFO L186 Difference]: Start difference. First operand has 354 places, 256 transitions, 2053 flow. Second operand 27 states and 3575 transitions. [2022-07-21 08:59:07,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 324 transitions, 3432 flow [2022-07-21 08:59:07,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 324 transitions, 3192 flow, removed 100 selfloop flow, removed 14 redundant places. [2022-07-21 08:59:07,119 INFO L242 Difference]: Finished difference. Result has 369 places, 259 transitions, 2131 flow [2022-07-21 08:59:07,119 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2131, PETRI_PLACES=369, PETRI_TRANSITIONS=259} [2022-07-21 08:59:07,120 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 212 predicate places. [2022-07-21 08:59:07,120 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 259 transitions, 2131 flow [2022-07-21 08:59:07,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:07,120 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:07,120 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] [2022-07-21 08:59:07,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-07-21 08:59:07,120 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:07,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:07,121 INFO L85 PathProgramCache]: Analyzing trace with hash -612796028, now seen corresponding path program 22 times [2022-07-21 08:59:07,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:07,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294771195] [2022-07-21 08:59:07,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:07,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:07,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:07,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:07,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294771195] [2022-07-21 08:59:07,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294771195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:07,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:07,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:07,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004852352] [2022-07-21 08:59:07,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:07,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:07,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:07,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:07,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:07,191 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:07,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 259 transitions, 2131 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:07,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:07,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:07,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:07,721 INFO L129 PetriNetUnfolder]: 364/1793 cut-off events. [2022-07-21 08:59:07,722 INFO L130 PetriNetUnfolder]: For 13755/13827 co-relation queries the response was YES. [2022-07-21 08:59:07,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7810 conditions, 1793 events. 364/1793 cut-off events. For 13755/13827 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13452 event pairs, 231 based on Foata normal form. 10/1714 useless extension candidates. Maximal degree in co-relation 7678. Up to 738 conditions per place. [2022-07-21 08:59:07,740 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 110 selfloop transitions, 39 changer transitions 31/324 dead transitions. [2022-07-21 08:59:07,740 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 324 transitions, 3396 flow [2022-07-21 08:59:07,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 08:59:07,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 08:59:07,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2920 transitions. [2022-07-21 08:59:07,742 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7628004179728317 [2022-07-21 08:59:07,742 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2920 transitions. [2022-07-21 08:59:07,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2920 transitions. [2022-07-21 08:59:07,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:07,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2920 transitions. [2022-07-21 08:59:07,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.72727272727272) internal successors, (2920), 22 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:07,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:07,746 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:07,746 INFO L186 Difference]: Start difference. First operand has 369 places, 259 transitions, 2131 flow. Second operand 22 states and 2920 transitions. [2022-07-21 08:59:07,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 324 transitions, 3396 flow [2022-07-21 08:59:07,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 324 transitions, 3144 flow, removed 88 selfloop flow, removed 21 redundant places. [2022-07-21 08:59:07,810 INFO L242 Difference]: Finished difference. Result has 363 places, 266 transitions, 2213 flow [2022-07-21 08:59:07,810 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2213, PETRI_PLACES=363, PETRI_TRANSITIONS=266} [2022-07-21 08:59:07,810 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 206 predicate places. [2022-07-21 08:59:07,811 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 266 transitions, 2213 flow [2022-07-21 08:59:07,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:07,811 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:07,811 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] [2022-07-21 08:59:07,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-07-21 08:59:07,811 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:07,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:07,811 INFO L85 PathProgramCache]: Analyzing trace with hash 44964614, now seen corresponding path program 23 times [2022-07-21 08:59:07,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:07,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978217421] [2022-07-21 08:59:07,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:07,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:07,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:07,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:07,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978217421] [2022-07-21 08:59:07,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978217421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:07,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:07,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:07,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531512969] [2022-07-21 08:59:07,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:07,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:07,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:07,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:07,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:07,886 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:07,887 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 266 transitions, 2213 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:07,887 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:07,887 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:07,887 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:08,374 INFO L129 PetriNetUnfolder]: 368/1806 cut-off events. [2022-07-21 08:59:08,374 INFO L130 PetriNetUnfolder]: For 12283/12355 co-relation queries the response was YES. [2022-07-21 08:59:08,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7784 conditions, 1806 events. 368/1806 cut-off events. For 12283/12355 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13534 event pairs, 238 based on Foata normal form. 10/1723 useless extension candidates. Maximal degree in co-relation 7660. Up to 740 conditions per place. [2022-07-21 08:59:08,396 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 104 selfloop transitions, 46 changer transitions 30/324 dead transitions. [2022-07-21 08:59:08,396 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 324 transitions, 3386 flow [2022-07-21 08:59:08,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 08:59:08,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 08:59:08,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2792 transitions. [2022-07-21 08:59:08,398 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7640941434044882 [2022-07-21 08:59:08,398 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2792 transitions. [2022-07-21 08:59:08,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2792 transitions. [2022-07-21 08:59:08,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:08,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2792 transitions. [2022-07-21 08:59:08,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.95238095238096) internal successors, (2792), 21 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:08,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:08,401 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:08,401 INFO L186 Difference]: Start difference. First operand has 363 places, 266 transitions, 2213 flow. Second operand 21 states and 2792 transitions. [2022-07-21 08:59:08,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 324 transitions, 3386 flow [2022-07-21 08:59:08,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 324 transitions, 3287 flow, removed 34 selfloop flow, removed 7 redundant places. [2022-07-21 08:59:08,470 INFO L242 Difference]: Finished difference. Result has 377 places, 276 transitions, 2461 flow [2022-07-21 08:59:08,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2145, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2461, PETRI_PLACES=377, PETRI_TRANSITIONS=276} [2022-07-21 08:59:08,471 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 220 predicate places. [2022-07-21 08:59:08,471 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 276 transitions, 2461 flow [2022-07-21 08:59:08,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:08,471 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:08,472 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] [2022-07-21 08:59:08,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-07-21 08:59:08,472 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:08,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:08,472 INFO L85 PathProgramCache]: Analyzing trace with hash -601232756, now seen corresponding path program 24 times [2022-07-21 08:59:08,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:08,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639417089] [2022-07-21 08:59:08,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:08,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:08,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:08,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:08,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639417089] [2022-07-21 08:59:08,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639417089] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:08,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:08,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:08,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029519395] [2022-07-21 08:59:08,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:08,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:08,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:08,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:08,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:08,558 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:08,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 276 transitions, 2461 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:08,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:08,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:08,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:09,085 INFO L129 PetriNetUnfolder]: 364/1800 cut-off events. [2022-07-21 08:59:09,086 INFO L130 PetriNetUnfolder]: For 12577/12649 co-relation queries the response was YES. [2022-07-21 08:59:09,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7849 conditions, 1800 events. 364/1800 cut-off events. For 12577/12649 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13540 event pairs, 236 based on Foata normal form. 10/1717 useless extension candidates. Maximal degree in co-relation 7718. Up to 738 conditions per place. [2022-07-21 08:59:09,108 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 112 selfloop transitions, 41 changer transitions 31/328 dead transitions. [2022-07-21 08:59:09,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 328 transitions, 3615 flow [2022-07-21 08:59:09,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 08:59:09,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 08:59:09,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2923 transitions. [2022-07-21 08:59:09,110 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7635841170323929 [2022-07-21 08:59:09,110 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2923 transitions. [2022-07-21 08:59:09,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2923 transitions. [2022-07-21 08:59:09,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:09,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2923 transitions. [2022-07-21 08:59:09,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.86363636363637) internal successors, (2923), 22 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:09,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:09,114 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:09,114 INFO L186 Difference]: Start difference. First operand has 377 places, 276 transitions, 2461 flow. Second operand 22 states and 2923 transitions. [2022-07-21 08:59:09,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 328 transitions, 3615 flow [2022-07-21 08:59:09,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 328 transitions, 3478 flow, removed 39 selfloop flow, removed 9 redundant places. [2022-07-21 08:59:09,186 INFO L242 Difference]: Finished difference. Result has 390 places, 280 transitions, 2576 flow [2022-07-21 08:59:09,186 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2364, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2576, PETRI_PLACES=390, PETRI_TRANSITIONS=280} [2022-07-21 08:59:09,187 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 233 predicate places. [2022-07-21 08:59:09,187 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 280 transitions, 2576 flow [2022-07-21 08:59:09,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:09,187 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:09,187 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] [2022-07-21 08:59:09,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-07-21 08:59:09,187 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:09,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:09,188 INFO L85 PathProgramCache]: Analyzing trace with hash 945410318, now seen corresponding path program 25 times [2022-07-21 08:59:09,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:09,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108760230] [2022-07-21 08:59:09,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:09,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:09,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:09,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:09,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108760230] [2022-07-21 08:59:09,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108760230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:09,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:09,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:09,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114686231] [2022-07-21 08:59:09,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:09,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:09,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:09,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:09,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:09,260 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:09,261 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 280 transitions, 2576 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:09,261 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:09,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:09,261 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:09,797 INFO L129 PetriNetUnfolder]: 370/1818 cut-off events. [2022-07-21 08:59:09,798 INFO L130 PetriNetUnfolder]: For 13333/13405 co-relation queries the response was YES. [2022-07-21 08:59:09,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8078 conditions, 1818 events. 370/1818 cut-off events. For 13333/13405 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13695 event pairs, 235 based on Foata normal form. 10/1733 useless extension candidates. Maximal degree in co-relation 7942. Up to 740 conditions per place. [2022-07-21 08:59:09,820 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 104 selfloop transitions, 56 changer transitions 28/332 dead transitions. [2022-07-21 08:59:09,821 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 332 transitions, 3785 flow [2022-07-21 08:59:09,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:59:09,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:59:09,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2022-07-21 08:59:09,822 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2022-07-21 08:59:09,822 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2022-07-21 08:59:09,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2022-07-21 08:59:09,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:09,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2022-07-21 08:59:09,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:09,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:09,826 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:09,826 INFO L186 Difference]: Start difference. First operand has 390 places, 280 transitions, 2576 flow. Second operand 20 states and 2663 transitions. [2022-07-21 08:59:09,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 332 transitions, 3785 flow [2022-07-21 08:59:09,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 332 transitions, 3642 flow, removed 54 selfloop flow, removed 7 redundant places. [2022-07-21 08:59:09,908 INFO L242 Difference]: Finished difference. Result has 404 places, 292 transitions, 2904 flow [2022-07-21 08:59:09,917 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2480, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2904, PETRI_PLACES=404, PETRI_TRANSITIONS=292} [2022-07-21 08:59:09,918 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 247 predicate places. [2022-07-21 08:59:09,918 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 292 transitions, 2904 flow [2022-07-21 08:59:09,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:09,918 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:09,918 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] [2022-07-21 08:59:09,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-07-21 08:59:09,918 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:09,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:09,919 INFO L85 PathProgramCache]: Analyzing trace with hash -982971076, now seen corresponding path program 26 times [2022-07-21 08:59:09,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:09,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721653890] [2022-07-21 08:59:09,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:09,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:09,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:09,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:09,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721653890] [2022-07-21 08:59:09,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721653890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:09,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:09,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:09,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412876584] [2022-07-21 08:59:09,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:09,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:09,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:09,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:09,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:09,997 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:09,997 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 292 transitions, 2904 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:09,997 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:09,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:09,998 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:10,551 INFO L129 PetriNetUnfolder]: 374/1839 cut-off events. [2022-07-21 08:59:10,551 INFO L130 PetriNetUnfolder]: For 14041/14113 co-relation queries the response was YES. [2022-07-21 08:59:10,570 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8365 conditions, 1839 events. 374/1839 cut-off events. For 14041/14113 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13876 event pairs, 234 based on Foata normal form. 10/1753 useless extension candidates. Maximal degree in co-relation 8221. Up to 742 conditions per place. [2022-07-21 08:59:10,575 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 124 selfloop transitions, 46 changer transitions 28/342 dead transitions. [2022-07-21 08:59:10,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 342 transitions, 4179 flow [2022-07-21 08:59:10,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 08:59:10,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 08:59:10,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2924 transitions. [2022-07-21 08:59:10,577 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7638453500522466 [2022-07-21 08:59:10,577 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2924 transitions. [2022-07-21 08:59:10,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2924 transitions. [2022-07-21 08:59:10,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:10,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2924 transitions. [2022-07-21 08:59:10,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.9090909090909) internal successors, (2924), 22 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,581 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,581 INFO L186 Difference]: Start difference. First operand has 404 places, 292 transitions, 2904 flow. Second operand 22 states and 2924 transitions. [2022-07-21 08:59:10,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 342 transitions, 4179 flow [2022-07-21 08:59:10,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 342 transitions, 3961 flow, removed 61 selfloop flow, removed 9 redundant places. [2022-07-21 08:59:10,676 INFO L242 Difference]: Finished difference. Result has 417 places, 304 transitions, 3140 flow [2022-07-21 08:59:10,676 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2732, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3140, PETRI_PLACES=417, PETRI_TRANSITIONS=304} [2022-07-21 08:59:10,677 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 260 predicate places. [2022-07-21 08:59:10,677 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 304 transitions, 3140 flow [2022-07-21 08:59:10,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,677 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:10,677 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] [2022-07-21 08:59:10,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-07-21 08:59:10,677 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:10,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:10,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1984360848, now seen corresponding path program 27 times [2022-07-21 08:59:10,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:10,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577781655] [2022-07-21 08:59:10,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:10,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:10,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:10,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:10,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577781655] [2022-07-21 08:59:10,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577781655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:10,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:10,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:10,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025036610] [2022-07-21 08:59:10,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:10,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:10,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:10,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:10,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:10,772 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:10,772 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 304 transitions, 3140 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:10,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:10,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:11,316 INFO L129 PetriNetUnfolder]: 370/1829 cut-off events. [2022-07-21 08:59:11,316 INFO L130 PetriNetUnfolder]: For 14026/14098 co-relation queries the response was YES. [2022-07-21 08:59:11,337 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8321 conditions, 1829 events. 370/1829 cut-off events. For 14026/14098 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13811 event pairs, 235 based on Foata normal form. 10/1742 useless extension candidates. Maximal degree in co-relation 8173. Up to 740 conditions per place. [2022-07-21 08:59:11,343 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 127 selfloop transitions, 48 changer transitions 30/349 dead transitions. [2022-07-21 08:59:11,343 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 349 transitions, 4364 flow [2022-07-21 08:59:11,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 08:59:11,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 08:59:11,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2797 transitions. [2022-07-21 08:59:11,345 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7654625068418172 [2022-07-21 08:59:11,345 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2797 transitions. [2022-07-21 08:59:11,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2797 transitions. [2022-07-21 08:59:11,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:11,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2797 transitions. [2022-07-21 08:59:11,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 133.1904761904762) internal successors, (2797), 21 states have internal predecessors, (2797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:11,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:11,349 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:11,350 INFO L186 Difference]: Start difference. First operand has 417 places, 304 transitions, 3140 flow. Second operand 21 states and 2797 transitions. [2022-07-21 08:59:11,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 349 transitions, 4364 flow [2022-07-21 08:59:11,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 349 transitions, 4133 flow, removed 96 selfloop flow, removed 6 redundant places. [2022-07-21 08:59:11,459 INFO L242 Difference]: Finished difference. Result has 432 places, 311 transitions, 3285 flow [2022-07-21 08:59:11,459 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2986, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3285, PETRI_PLACES=432, PETRI_TRANSITIONS=311} [2022-07-21 08:59:11,460 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 275 predicate places. [2022-07-21 08:59:11,460 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 311 transitions, 3285 flow [2022-07-21 08:59:11,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:11,460 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:11,460 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] [2022-07-21 08:59:11,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-07-21 08:59:11,461 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:11,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:11,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1967535438, now seen corresponding path program 28 times [2022-07-21 08:59:11,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:11,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242771221] [2022-07-21 08:59:11,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:11,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:11,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:11,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242771221] [2022-07-21 08:59:11,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242771221] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:11,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:11,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:11,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305260957] [2022-07-21 08:59:11,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:11,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:11,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:11,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:11,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:11,546 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:11,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 311 transitions, 3285 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:11,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:11,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:11,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:12,075 INFO L129 PetriNetUnfolder]: 361/1805 cut-off events. [2022-07-21 08:59:12,076 INFO L130 PetriNetUnfolder]: For 13575/13647 co-relation queries the response was YES. [2022-07-21 08:59:12,096 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8109 conditions, 1805 events. 361/1805 cut-off events. For 13575/13647 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13642 event pairs, 228 based on Foata normal form. 10/1725 useless extension candidates. Maximal degree in co-relation 7953. Up to 737 conditions per place. [2022-07-21 08:59:12,101 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 130 selfloop transitions, 36 changer transitions 40/350 dead transitions. [2022-07-21 08:59:12,101 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 350 transitions, 4154 flow [2022-07-21 08:59:12,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 08:59:12,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 08:59:12,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2400 transitions. [2022-07-21 08:59:12,103 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7662835249042146 [2022-07-21 08:59:12,103 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2400 transitions. [2022-07-21 08:59:12,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2400 transitions. [2022-07-21 08:59:12,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:12,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2400 transitions. [2022-07-21 08:59:12,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.33333333333334) internal successors, (2400), 18 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:12,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 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) [2022-07-21 08:59:12,106 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 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) [2022-07-21 08:59:12,106 INFO L186 Difference]: Start difference. First operand has 432 places, 311 transitions, 3285 flow. Second operand 18 states and 2400 transitions. [2022-07-21 08:59:12,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 350 transitions, 4154 flow [2022-07-21 08:59:12,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 350 transitions, 4034 flow, removed 39 selfloop flow, removed 10 redundant places. [2022-07-21 08:59:12,201 INFO L242 Difference]: Finished difference. Result has 434 places, 291 transitions, 2868 flow [2022-07-21 08:59:12,201 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3171, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2868, PETRI_PLACES=434, PETRI_TRANSITIONS=291} [2022-07-21 08:59:12,202 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 277 predicate places. [2022-07-21 08:59:12,202 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 291 transitions, 2868 flow [2022-07-21 08:59:12,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:12,202 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:12,202 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] [2022-07-21 08:59:12,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-07-21 08:59:12,203 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:12,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:12,203 INFO L85 PathProgramCache]: Analyzing trace with hash -318225270, now seen corresponding path program 29 times [2022-07-21 08:59:12,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:12,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938900042] [2022-07-21 08:59:12,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:12,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:12,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:12,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:12,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938900042] [2022-07-21 08:59:12,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938900042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:12,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:12,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:12,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373543244] [2022-07-21 08:59:12,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:12,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:12,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:12,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:12,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:12,281 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:12,281 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 291 transitions, 2868 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:12,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:12,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:12,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:12,871 INFO L129 PetriNetUnfolder]: 356/1798 cut-off events. [2022-07-21 08:59:12,871 INFO L130 PetriNetUnfolder]: For 13312/13384 co-relation queries the response was YES. [2022-07-21 08:59:12,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7970 conditions, 1798 events. 356/1798 cut-off events. For 13312/13384 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13601 event pairs, 232 based on Foata normal form. 10/1715 useless extension candidates. Maximal degree in co-relation 7817. Up to 735 conditions per place. [2022-07-21 08:59:12,896 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 120 selfloop transitions, 28 changer transitions 37/329 dead transitions. [2022-07-21 08:59:12,896 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 329 transitions, 3734 flow [2022-07-21 08:59:12,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:59:12,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:59:12,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2660 transitions. [2022-07-21 08:59:12,898 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-07-21 08:59:12,898 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2660 transitions. [2022-07-21 08:59:12,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2660 transitions. [2022-07-21 08:59:12,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:12,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2660 transitions. [2022-07-21 08:59:12,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.0) internal successors, (2660), 20 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:12,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:12,901 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:12,901 INFO L186 Difference]: Start difference. First operand has 434 places, 291 transitions, 2868 flow. Second operand 20 states and 2660 transitions. [2022-07-21 08:59:12,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 329 transitions, 3734 flow [2022-07-21 08:59:12,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 329 transitions, 3467 flow, removed 25 selfloop flow, removed 22 redundant places. [2022-07-21 08:59:12,991 INFO L242 Difference]: Finished difference. Result has 415 places, 280 transitions, 2532 flow [2022-07-21 08:59:12,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2654, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2532, PETRI_PLACES=415, PETRI_TRANSITIONS=280} [2022-07-21 08:59:12,992 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 258 predicate places. [2022-07-21 08:59:12,992 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 280 transitions, 2532 flow [2022-07-21 08:59:12,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:12,992 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:12,992 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] [2022-07-21 08:59:12,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-07-21 08:59:12,992 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:12,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:12,993 INFO L85 PathProgramCache]: Analyzing trace with hash 562491692, now seen corresponding path program 30 times [2022-07-21 08:59:12,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:12,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333274990] [2022-07-21 08:59:12,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:12,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:13,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:13,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:13,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333274990] [2022-07-21 08:59:13,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333274990] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:13,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:13,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:13,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753256932] [2022-07-21 08:59:13,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:13,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:13,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:13,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:13,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:13,093 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:13,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 280 transitions, 2532 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:13,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:13,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:13,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:13,609 INFO L129 PetriNetUnfolder]: 343/1746 cut-off events. [2022-07-21 08:59:13,609 INFO L130 PetriNetUnfolder]: For 11705/11777 co-relation queries the response was YES. [2022-07-21 08:59:13,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7358 conditions, 1746 events. 343/1746 cut-off events. For 11705/11777 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13039 event pairs, 231 based on Foata normal form. 10/1665 useless extension candidates. Maximal degree in co-relation 7210. Up to 731 conditions per place. [2022-07-21 08:59:13,632 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 110 selfloop transitions, 15 changer transitions 40/309 dead transitions. [2022-07-21 08:59:13,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 309 transitions, 3160 flow [2022-07-21 08:59:13,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 08:59:13,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-21 08:59:13,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2523 transitions. [2022-07-21 08:59:13,633 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7631578947368421 [2022-07-21 08:59:13,633 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2523 transitions. [2022-07-21 08:59:13,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2523 transitions. [2022-07-21 08:59:13,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:13,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2523 transitions. [2022-07-21 08:59:13,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 132.78947368421052) internal successors, (2523), 19 states have internal predecessors, (2523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:13,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:13,637 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:13,637 INFO L186 Difference]: Start difference. First operand has 415 places, 280 transitions, 2532 flow. Second operand 19 states and 2523 transitions. [2022-07-21 08:59:13,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 309 transitions, 3160 flow [2022-07-21 08:59:13,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 309 transitions, 3008 flow, removed 24 selfloop flow, removed 22 redundant places. [2022-07-21 08:59:13,707 INFO L242 Difference]: Finished difference. Result has 397 places, 257 transitions, 2066 flow [2022-07-21 08:59:13,707 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2402, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2066, PETRI_PLACES=397, PETRI_TRANSITIONS=257} [2022-07-21 08:59:13,708 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 240 predicate places. [2022-07-21 08:59:13,708 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 257 transitions, 2066 flow [2022-07-21 08:59:13,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:13,708 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:13,708 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] [2022-07-21 08:59:13,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-07-21 08:59:13,709 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:13,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:13,709 INFO L85 PathProgramCache]: Analyzing trace with hash -2141377916, now seen corresponding path program 31 times [2022-07-21 08:59:13,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:13,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316782091] [2022-07-21 08:59:13,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:13,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:13,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:13,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:13,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316782091] [2022-07-21 08:59:13,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316782091] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:13,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:13,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:13,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525188373] [2022-07-21 08:59:13,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:13,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:13,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:13,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:13,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:13,791 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:13,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 257 transitions, 2066 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:13,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:13,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:13,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:14,354 INFO L129 PetriNetUnfolder]: 351/1788 cut-off events. [2022-07-21 08:59:14,354 INFO L130 PetriNetUnfolder]: For 11695/11767 co-relation queries the response was YES. [2022-07-21 08:59:14,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7427 conditions, 1788 events. 351/1788 cut-off events. For 11695/11767 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13449 event pairs, 231 based on Foata normal form. 10/1706 useless extension candidates. Maximal degree in co-relation 7289. Up to 731 conditions per place. [2022-07-21 08:59:14,373 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 96 selfloop transitions, 33 changer transitions 43/316 dead transitions. [2022-07-21 08:59:14,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 316 transitions, 3279 flow [2022-07-21 08:59:14,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-21 08:59:14,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-21 08:59:14,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3057 transitions. [2022-07-21 08:59:14,375 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7638680659670165 [2022-07-21 08:59:14,375 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3057 transitions. [2022-07-21 08:59:14,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3057 transitions. [2022-07-21 08:59:14,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:14,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3057 transitions. [2022-07-21 08:59:14,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.91304347826087) internal successors, (3057), 23 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:14,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:14,379 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:14,379 INFO L186 Difference]: Start difference. First operand has 397 places, 257 transitions, 2066 flow. Second operand 23 states and 3057 transitions. [2022-07-21 08:59:14,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 316 transitions, 3279 flow [2022-07-21 08:59:14,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 316 transitions, 3071 flow, removed 25 selfloop flow, removed 20 redundant places. [2022-07-21 08:59:14,437 INFO L242 Difference]: Finished difference. Result has 380 places, 262 transitions, 2167 flow [2022-07-21 08:59:14,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1955, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2167, PETRI_PLACES=380, PETRI_TRANSITIONS=262} [2022-07-21 08:59:14,438 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 223 predicate places. [2022-07-21 08:59:14,438 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 262 transitions, 2167 flow [2022-07-21 08:59:14,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:14,438 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:14,439 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] [2022-07-21 08:59:14,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-07-21 08:59:14,439 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:14,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:14,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1314758992, now seen corresponding path program 32 times [2022-07-21 08:59:14,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:14,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943637147] [2022-07-21 08:59:14,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:14,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:14,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:14,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:14,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943637147] [2022-07-21 08:59:14,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943637147] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:14,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:14,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:14,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539821646] [2022-07-21 08:59:14,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:14,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:14,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:14,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:14,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:14,519 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:14,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 262 transitions, 2167 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:14,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:14,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:14,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:15,065 INFO L129 PetriNetUnfolder]: 347/1766 cut-off events. [2022-07-21 08:59:15,066 INFO L130 PetriNetUnfolder]: For 11060/11132 co-relation queries the response was YES. [2022-07-21 08:59:15,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7190 conditions, 1766 events. 347/1766 cut-off events. For 11060/11132 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13303 event pairs, 230 based on Foata normal form. 10/1682 useless extension candidates. Maximal degree in co-relation 7052. Up to 731 conditions per place. [2022-07-21 08:59:15,091 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 35 changer transitions 41/313 dead transitions. [2022-07-21 08:59:15,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 313 transitions, 3186 flow [2022-07-21 08:59:15,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 08:59:15,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 08:59:15,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3188 transitions. [2022-07-21 08:59:15,093 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7634099616858238 [2022-07-21 08:59:15,093 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3188 transitions. [2022-07-21 08:59:15,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3188 transitions. [2022-07-21 08:59:15,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:15,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3188 transitions. [2022-07-21 08:59:15,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.83333333333334) internal successors, (3188), 24 states have internal predecessors, (3188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,097 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,097 INFO L186 Difference]: Start difference. First operand has 380 places, 262 transitions, 2167 flow. Second operand 24 states and 3188 transitions. [2022-07-21 08:59:15,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 313 transitions, 3186 flow [2022-07-21 08:59:15,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 313 transitions, 3035 flow, removed 39 selfloop flow, removed 16 redundant places. [2022-07-21 08:59:15,155 INFO L242 Difference]: Finished difference. Result has 386 places, 261 transitions, 2168 flow [2022-07-21 08:59:15,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2065, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2168, PETRI_PLACES=386, PETRI_TRANSITIONS=261} [2022-07-21 08:59:15,156 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 229 predicate places. [2022-07-21 08:59:15,156 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 261 transitions, 2168 flow [2022-07-21 08:59:15,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,156 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:15,157 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] [2022-07-21 08:59:15,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-07-21 08:59:15,157 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:15,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:15,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1535074004, now seen corresponding path program 33 times [2022-07-21 08:59:15,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:15,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363180767] [2022-07-21 08:59:15,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:15,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:15,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:15,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:15,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363180767] [2022-07-21 08:59:15,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363180767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:15,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:15,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:15,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342920800] [2022-07-21 08:59:15,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:15,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:15,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:15,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:15,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:15,253 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:15,253 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 261 transitions, 2168 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,253 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:15,253 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:15,254 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:15,717 INFO L129 PetriNetUnfolder]: 339/1736 cut-off events. [2022-07-21 08:59:15,717 INFO L130 PetriNetUnfolder]: For 10669/10741 co-relation queries the response was YES. [2022-07-21 08:59:15,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7009 conditions, 1736 events. 339/1736 cut-off events. For 10669/10741 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 12985 event pairs, 232 based on Foata normal form. 10/1651 useless extension candidates. Maximal degree in co-relation 6871. Up to 729 conditions per place. [2022-07-21 08:59:15,738 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 87 selfloop transitions, 25 changer transitions 37/293 dead transitions. [2022-07-21 08:59:15,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 293 transitions, 2866 flow [2022-07-21 08:59:15,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 08:59:15,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-21 08:59:15,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2529 transitions. [2022-07-21 08:59:15,740 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.76497277676951 [2022-07-21 08:59:15,740 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2529 transitions. [2022-07-21 08:59:15,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2529 transitions. [2022-07-21 08:59:15,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:15,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2529 transitions. [2022-07-21 08:59:15,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.10526315789474) internal successors, (2529), 19 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,744 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,744 INFO L186 Difference]: Start difference. First operand has 386 places, 261 transitions, 2168 flow. Second operand 19 states and 2529 transitions. [2022-07-21 08:59:15,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 293 transitions, 2866 flow [2022-07-21 08:59:15,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 293 transitions, 2706 flow, removed 39 selfloop flow, removed 18 redundant places. [2022-07-21 08:59:15,798 INFO L242 Difference]: Finished difference. Result has 378 places, 250 transitions, 1917 flow [2022-07-21 08:59:15,798 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2045, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1917, PETRI_PLACES=378, PETRI_TRANSITIONS=250} [2022-07-21 08:59:15,799 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 221 predicate places. [2022-07-21 08:59:15,799 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 250 transitions, 1917 flow [2022-07-21 08:59:15,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,799 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:15,799 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] [2022-07-21 08:59:15,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-07-21 08:59:15,799 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:15,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:15,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1592779014, now seen corresponding path program 34 times [2022-07-21 08:59:15,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:15,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838283451] [2022-07-21 08:59:15,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:15,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:15,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:15,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:15,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838283451] [2022-07-21 08:59:15,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838283451] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:15,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:15,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:15,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855995745] [2022-07-21 08:59:15,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:15,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:15,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:15,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:15,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:15,887 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:15,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 250 transitions, 1917 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:15,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:15,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:16,364 INFO L129 PetriNetUnfolder]: 327/1689 cut-off events. [2022-07-21 08:59:16,365 INFO L130 PetriNetUnfolder]: For 9776/9848 co-relation queries the response was YES. [2022-07-21 08:59:16,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6637 conditions, 1689 events. 327/1689 cut-off events. For 9776/9848 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 12616 event pairs, 230 based on Foata normal form. 10/1607 useless extension candidates. Maximal degree in co-relation 6506. Up to 727 conditions per place. [2022-07-21 08:59:16,386 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 81 selfloop transitions, 13 changer transitions 37/275 dead transitions. [2022-07-21 08:59:16,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 275 transitions, 2447 flow [2022-07-21 08:59:16,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:59:16,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:59:16,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2656 transitions. [2022-07-21 08:59:16,388 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7632183908045977 [2022-07-21 08:59:16,388 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2656 transitions. [2022-07-21 08:59:16,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2656 transitions. [2022-07-21 08:59:16,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:16,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2656 transitions. [2022-07-21 08:59:16,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.8) internal successors, (2656), 20 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:16,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:16,391 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:16,391 INFO L186 Difference]: Start difference. First operand has 378 places, 250 transitions, 1917 flow. Second operand 20 states and 2656 transitions. [2022-07-21 08:59:16,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 275 transitions, 2447 flow [2022-07-21 08:59:16,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 275 transitions, 2277 flow, removed 26 selfloop flow, removed 23 redundant places. [2022-07-21 08:59:16,440 INFO L242 Difference]: Finished difference. Result has 363 places, 232 transitions, 1547 flow [2022-07-21 08:59:16,440 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1783, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1547, PETRI_PLACES=363, PETRI_TRANSITIONS=232} [2022-07-21 08:59:16,440 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 206 predicate places. [2022-07-21 08:59:16,441 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 232 transitions, 1547 flow [2022-07-21 08:59:16,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:16,441 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:16,441 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] [2022-07-21 08:59:16,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-07-21 08:59:16,441 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:16,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:16,441 INFO L85 PathProgramCache]: Analyzing trace with hash 542274912, now seen corresponding path program 35 times [2022-07-21 08:59:16,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:16,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352522476] [2022-07-21 08:59:16,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:16,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:16,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:16,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:16,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352522476] [2022-07-21 08:59:16,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352522476] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:16,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:16,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:16,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560959930] [2022-07-21 08:59:16,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:16,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:16,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:16,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:16,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:16,516 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-21 08:59:16,516 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 232 transitions, 1547 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:16,516 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:16,517 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-21 08:59:16,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:16,955 INFO L129 PetriNetUnfolder]: 314/1615 cut-off events. [2022-07-21 08:59:16,955 INFO L130 PetriNetUnfolder]: For 9104/9176 co-relation queries the response was YES. [2022-07-21 08:59:16,970 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6209 conditions, 1615 events. 314/1615 cut-off events. For 9104/9176 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 11855 event pairs, 224 based on Foata normal form. 10/1537 useless extension candidates. Maximal degree in co-relation 6085. Up to 707 conditions per place. [2022-07-21 08:59:16,973 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 67 selfloop transitions, 2 changer transitions 40/251 dead transitions. [2022-07-21 08:59:16,973 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 251 transitions, 1922 flow [2022-07-21 08:59:16,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:59:16,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:59:16,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2645 transitions. [2022-07-21 08:59:16,975 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2022-07-21 08:59:16,975 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2645 transitions. [2022-07-21 08:59:16,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2645 transitions. [2022-07-21 08:59:16,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:16,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2645 transitions. [2022-07-21 08:59:16,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.25) internal successors, (2645), 20 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:16,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:16,979 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:16,979 INFO L186 Difference]: Start difference. First operand has 363 places, 232 transitions, 1547 flow. Second operand 20 states and 2645 transitions. [2022-07-21 08:59:16,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 251 transitions, 1922 flow [2022-07-21 08:59:17,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 251 transitions, 1833 flow, removed 16 selfloop flow, removed 21 redundant places. [2022-07-21 08:59:17,019 INFO L242 Difference]: Finished difference. Result has 341 places, 205 transitions, 1134 flow [2022-07-21 08:59:17,020 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1134, PETRI_PLACES=341, PETRI_TRANSITIONS=205} [2022-07-21 08:59:17,020 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 184 predicate places. [2022-07-21 08:59:17,020 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 205 transitions, 1134 flow [2022-07-21 08:59:17,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:17,020 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:17,020 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] [2022-07-21 08:59:17,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-07-21 08:59:17,020 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:17,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:17,021 INFO L85 PathProgramCache]: Analyzing trace with hash -690803015, now seen corresponding path program 1 times [2022-07-21 08:59:17,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:17,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144677641] [2022-07-21 08:59:17,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:17,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:17,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:17,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:17,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144677641] [2022-07-21 08:59:17,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144677641] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:17,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:17,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:17,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271344974] [2022-07-21 08:59:17,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:17,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:17,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:17,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:17,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:17,257 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:17,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 205 transitions, 1134 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:17,258 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:17,258 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:17,258 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:18,692 INFO L129 PetriNetUnfolder]: 887/3697 cut-off events. [2022-07-21 08:59:18,693 INFO L130 PetriNetUnfolder]: For 16466/16507 co-relation queries the response was YES. [2022-07-21 08:59:18,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11999 conditions, 3697 events. 887/3697 cut-off events. For 16466/16507 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 32120 event pairs, 247 based on Foata normal form. 41/3607 useless extension candidates. Maximal degree in co-relation 11883. Up to 569 conditions per place. [2022-07-21 08:59:18,737 INFO L132 encePairwiseOnDemand]: 145/174 looper letters, 301 selfloop transitions, 40 changer transitions 39/471 dead transitions. [2022-07-21 08:59:18,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 471 transitions, 3902 flow [2022-07-21 08:59:18,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 08:59:18,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-21 08:59:18,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3045 transitions. [2022-07-21 08:59:18,739 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.625 [2022-07-21 08:59:18,739 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3045 transitions. [2022-07-21 08:59:18,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3045 transitions. [2022-07-21 08:59:18,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:18,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3045 transitions. [2022-07-21 08:59:18,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 108.75) internal successors, (3045), 28 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:18,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:18,744 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:18,744 INFO L186 Difference]: Start difference. First operand has 341 places, 205 transitions, 1134 flow. Second operand 28 states and 3045 transitions. [2022-07-21 08:59:18,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 471 transitions, 3902 flow [2022-07-21 08:59:18,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 471 transitions, 3711 flow, removed 73 selfloop flow, removed 28 redundant places. [2022-07-21 08:59:18,796 INFO L242 Difference]: Finished difference. Result has 329 places, 227 transitions, 1433 flow [2022-07-21 08:59:18,796 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1433, PETRI_PLACES=329, PETRI_TRANSITIONS=227} [2022-07-21 08:59:18,796 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 172 predicate places. [2022-07-21 08:59:18,797 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 227 transitions, 1433 flow [2022-07-21 08:59:18,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:18,797 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:18,797 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] [2022-07-21 08:59:18,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-07-21 08:59:18,797 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:18,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:18,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1500441663, now seen corresponding path program 2 times [2022-07-21 08:59:18,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:18,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972783686] [2022-07-21 08:59:18,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:18,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:19,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:19,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:19,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972783686] [2022-07-21 08:59:19,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972783686] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:19,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:19,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:19,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206661410] [2022-07-21 08:59:19,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:19,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:19,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:19,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:19,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:19,024 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:19,025 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 227 transitions, 1433 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:19,025 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:19,025 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:19,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:21,795 INFO L129 PetriNetUnfolder]: 1269/5705 cut-off events. [2022-07-21 08:59:21,795 INFO L130 PetriNetUnfolder]: For 34766/34812 co-relation queries the response was YES. [2022-07-21 08:59:21,851 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20601 conditions, 5705 events. 1269/5705 cut-off events. For 34766/34812 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 57551 event pairs, 337 based on Foata normal form. 51/5603 useless extension candidates. Maximal degree in co-relation 20483. Up to 741 conditions per place. [2022-07-21 08:59:21,866 INFO L132 encePairwiseOnDemand]: 142/174 looper letters, 338 selfloop transitions, 190 changer transitions 115/734 dead transitions. [2022-07-21 08:59:21,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 734 transitions, 6866 flow [2022-07-21 08:59:21,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-21 08:59:21,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-07-21 08:59:21,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 4373 transitions. [2022-07-21 08:59:21,869 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6283045977011494 [2022-07-21 08:59:21,869 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 4373 transitions. [2022-07-21 08:59:21,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 4373 transitions. [2022-07-21 08:59:21,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:21,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 4373 transitions. [2022-07-21 08:59:21,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 109.325) internal successors, (4373), 40 states have internal predecessors, (4373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:21,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 174.0) internal successors, (7134), 41 states have internal predecessors, (7134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:21,876 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 174.0) internal successors, (7134), 41 states have internal predecessors, (7134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:21,876 INFO L186 Difference]: Start difference. First operand has 329 places, 227 transitions, 1433 flow. Second operand 40 states and 4373 transitions. [2022-07-21 08:59:21,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 734 transitions, 6866 flow [2022-07-21 08:59:21,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 734 transitions, 6574 flow, removed 143 selfloop flow, removed 14 redundant places. [2022-07-21 08:59:22,004 INFO L242 Difference]: Finished difference. Result has 377 places, 389 transitions, 3725 flow [2022-07-21 08:59:22,005 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1353, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=3725, PETRI_PLACES=377, PETRI_TRANSITIONS=389} [2022-07-21 08:59:22,005 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 220 predicate places. [2022-07-21 08:59:22,005 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 389 transitions, 3725 flow [2022-07-21 08:59:22,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:22,006 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:22,006 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] [2022-07-21 08:59:22,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-07-21 08:59:22,006 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:22,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:22,006 INFO L85 PathProgramCache]: Analyzing trace with hash 961265543, now seen corresponding path program 3 times [2022-07-21 08:59:22,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:22,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106587045] [2022-07-21 08:59:22,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:22,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:22,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:22,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106587045] [2022-07-21 08:59:22,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106587045] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:22,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:22,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:22,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260310505] [2022-07-21 08:59:22,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:22,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:22,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:22,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:22,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:22,226 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:22,227 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 389 transitions, 3725 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:22,227 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:22,227 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:22,227 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:24,358 INFO L129 PetriNetUnfolder]: 1334/5870 cut-off events. [2022-07-21 08:59:24,358 INFO L130 PetriNetUnfolder]: For 58585/58636 co-relation queries the response was YES. [2022-07-21 08:59:24,429 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24794 conditions, 5870 events. 1334/5870 cut-off events. For 58585/58636 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 59169 event pairs, 436 based on Foata normal form. 51/5721 useless extension candidates. Maximal degree in co-relation 24652. Up to 1334 conditions per place. [2022-07-21 08:59:24,447 INFO L132 encePairwiseOnDemand]: 142/174 looper letters, 369 selfloop transitions, 131 changer transitions 109/700 dead transitions. [2022-07-21 08:59:24,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 700 transitions, 8101 flow [2022-07-21 08:59:24,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-21 08:59:24,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-21 08:59:24,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3872 transitions. [2022-07-21 08:59:24,450 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6181353767560664 [2022-07-21 08:59:24,450 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3872 transitions. [2022-07-21 08:59:24,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3872 transitions. [2022-07-21 08:59:24,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:24,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3872 transitions. [2022-07-21 08:59:24,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 107.55555555555556) internal successors, (3872), 36 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) [2022-07-21 08:59:24,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 174.0) internal successors, (6438), 37 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:24,456 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 174.0) internal successors, (6438), 37 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:24,456 INFO L186 Difference]: Start difference. First operand has 377 places, 389 transitions, 3725 flow. Second operand 36 states and 3872 transitions. [2022-07-21 08:59:24,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 700 transitions, 8101 flow [2022-07-21 08:59:24,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 700 transitions, 7638 flow, removed 219 selfloop flow, removed 7 redundant places. [2022-07-21 08:59:24,762 INFO L242 Difference]: Finished difference. Result has 433 places, 404 transitions, 4104 flow [2022-07-21 08:59:24,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3316, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4104, PETRI_PLACES=433, PETRI_TRANSITIONS=404} [2022-07-21 08:59:24,763 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 276 predicate places. [2022-07-21 08:59:24,763 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 404 transitions, 4104 flow [2022-07-21 08:59:24,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:24,763 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:24,763 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] [2022-07-21 08:59:24,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-07-21 08:59:24,763 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:24,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:24,763 INFO L85 PathProgramCache]: Analyzing trace with hash -898014253, now seen corresponding path program 4 times [2022-07-21 08:59:24,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:24,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648859374] [2022-07-21 08:59:24,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:24,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:24,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:24,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:24,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648859374] [2022-07-21 08:59:24,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648859374] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:24,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:24,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:24,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933901206] [2022-07-21 08:59:24,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:24,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:24,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:24,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:24,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:24,984 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:24,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 404 transitions, 4104 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:24,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:24,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:24,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:27,493 INFO L129 PetriNetUnfolder]: 1304/5598 cut-off events. [2022-07-21 08:59:27,493 INFO L130 PetriNetUnfolder]: For 66916/66971 co-relation queries the response was YES. [2022-07-21 08:59:27,556 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25576 conditions, 5598 events. 1304/5598 cut-off events. For 66916/66971 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 55581 event pairs, 474 based on Foata normal form. 55/5441 useless extension candidates. Maximal degree in co-relation 25408. Up to 1334 conditions per place. [2022-07-21 08:59:27,572 INFO L132 encePairwiseOnDemand]: 142/174 looper letters, 362 selfloop transitions, 133 changer transitions 104/690 dead transitions. [2022-07-21 08:59:27,572 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 690 transitions, 8604 flow [2022-07-21 08:59:27,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 08:59:27,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-21 08:59:27,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3774 transitions. [2022-07-21 08:59:27,574 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6197044334975369 [2022-07-21 08:59:27,574 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3774 transitions. [2022-07-21 08:59:27,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3774 transitions. [2022-07-21 08:59:27,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:27,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3774 transitions. [2022-07-21 08:59:27,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 107.82857142857142) internal successors, (3774), 35 states have internal predecessors, (3774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:27,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:27,580 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:27,580 INFO L186 Difference]: Start difference. First operand has 433 places, 404 transitions, 4104 flow. Second operand 35 states and 3774 transitions. [2022-07-21 08:59:27,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 690 transitions, 8604 flow [2022-07-21 08:59:27,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 690 transitions, 8140 flow, removed 225 selfloop flow, removed 29 redundant places. [2022-07-21 08:59:27,882 INFO L242 Difference]: Finished difference. Result has 438 places, 405 transitions, 4434 flow [2022-07-21 08:59:27,882 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=4002, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4434, PETRI_PLACES=438, PETRI_TRANSITIONS=405} [2022-07-21 08:59:27,883 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 281 predicate places. [2022-07-21 08:59:27,883 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 405 transitions, 4434 flow [2022-07-21 08:59:27,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:27,883 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:27,883 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:27,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-07-21 08:59:27,883 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:27,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:27,883 INFO L85 PathProgramCache]: Analyzing trace with hash -2133687005, now seen corresponding path program 1 times [2022-07-21 08:59:27,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:27,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163140313] [2022-07-21 08:59:27,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:27,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:27,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:27,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:27,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163140313] [2022-07-21 08:59:27,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163140313] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:27,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:27,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:59:27,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341434739] [2022-07-21 08:59:27,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:27,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:59:27,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:27,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:59:27,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:59:27,982 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-07-21 08:59:27,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 405 transitions, 4434 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:27,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:27,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-07-21 08:59:27,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:28,529 INFO L129 PetriNetUnfolder]: 377/2806 cut-off events. [2022-07-21 08:59:28,529 INFO L130 PetriNetUnfolder]: For 38042/38141 co-relation queries the response was YES. [2022-07-21 08:59:28,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12496 conditions, 2806 events. 377/2806 cut-off events. For 38042/38141 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 24662 event pairs, 170 based on Foata normal form. 39/2717 useless extension candidates. Maximal degree in co-relation 12328. Up to 172 conditions per place. [2022-07-21 08:59:28,572 INFO L132 encePairwiseOnDemand]: 166/174 looper letters, 62 selfloop transitions, 30 changer transitions 1/422 dead transitions. [2022-07-21 08:59:28,572 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 422 transitions, 4759 flow [2022-07-21 08:59:28,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:59:28,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:59:28,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 751 transitions. [2022-07-21 08:59:28,573 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8632183908045977 [2022-07-21 08:59:28,573 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 751 transitions. [2022-07-21 08:59:28,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 751 transitions. [2022-07-21 08:59:28,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:28,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 751 transitions. [2022-07-21 08:59:28,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:28,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:28,574 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:28,574 INFO L186 Difference]: Start difference. First operand has 438 places, 405 transitions, 4434 flow. Second operand 5 states and 751 transitions. [2022-07-21 08:59:28,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 422 transitions, 4759 flow [2022-07-21 08:59:28,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 422 transitions, 4350 flow, removed 43 selfloop flow, removed 34 redundant places. [2022-07-21 08:59:28,729 INFO L242 Difference]: Finished difference. Result has 384 places, 405 transitions, 4151 flow [2022-07-21 08:59:28,729 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3994, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4151, PETRI_PLACES=384, PETRI_TRANSITIONS=405} [2022-07-21 08:59:28,729 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 227 predicate places. [2022-07-21 08:59:28,729 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 405 transitions, 4151 flow [2022-07-21 08:59:28,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:28,729 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:28,730 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] [2022-07-21 08:59:28,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-07-21 08:59:28,730 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:28,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:28,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1744949675, now seen corresponding path program 2 times [2022-07-21 08:59:28,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:28,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738661287] [2022-07-21 08:59:28,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:28,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:28,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:28,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:28,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738661287] [2022-07-21 08:59:28,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738661287] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:28,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:28,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:59:28,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187504009] [2022-07-21 08:59:28,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:28,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:59:28,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:28,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:59:28,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:59:28,779 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-07-21 08:59:28,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 405 transitions, 4151 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:28,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:28,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-07-21 08:59:28,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:29,163 INFO L129 PetriNetUnfolder]: 234/1955 cut-off events. [2022-07-21 08:59:29,163 INFO L130 PetriNetUnfolder]: For 19371/19429 co-relation queries the response was YES. [2022-07-21 08:59:29,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7663 conditions, 1955 events. 234/1955 cut-off events. For 19371/19429 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 15594 event pairs, 108 based on Foata normal form. 31/1895 useless extension candidates. Maximal degree in co-relation 7520. Up to 106 conditions per place. [2022-07-21 08:59:29,189 INFO L132 encePairwiseOnDemand]: 162/174 looper letters, 51 selfloop transitions, 12 changer transitions 34/352 dead transitions. [2022-07-21 08:59:29,189 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 352 transitions, 3457 flow [2022-07-21 08:59:29,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:59:29,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:59:29,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 749 transitions. [2022-07-21 08:59:29,190 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.860919540229885 [2022-07-21 08:59:29,190 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 749 transitions. [2022-07-21 08:59:29,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 749 transitions. [2022-07-21 08:59:29,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:29,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 749 transitions. [2022-07-21 08:59:29,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:29,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:29,191 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:29,192 INFO L186 Difference]: Start difference. First operand has 384 places, 405 transitions, 4151 flow. Second operand 5 states and 749 transitions. [2022-07-21 08:59:29,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 352 transitions, 3457 flow [2022-07-21 08:59:29,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 352 transitions, 3187 flow, removed 75 selfloop flow, removed 10 redundant places. [2022-07-21 08:59:29,283 INFO L242 Difference]: Finished difference. Result has 379 places, 308 transitions, 2676 flow [2022-07-21 08:59:29,283 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2924, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2676, PETRI_PLACES=379, PETRI_TRANSITIONS=308} [2022-07-21 08:59:29,283 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 222 predicate places. [2022-07-21 08:59:29,283 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 308 transitions, 2676 flow [2022-07-21 08:59:29,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:29,283 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:29,284 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] [2022-07-21 08:59:29,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-07-21 08:59:29,284 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:29,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:29,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1469610441, now seen corresponding path program 5 times [2022-07-21 08:59:29,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:29,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723352257] [2022-07-21 08:59:29,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:29,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:29,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:29,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:29,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723352257] [2022-07-21 08:59:29,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723352257] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:29,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:29,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:29,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658404975] [2022-07-21 08:59:29,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:29,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:29,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:29,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:29,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:29,509 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:29,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 308 transitions, 2676 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:29,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:29,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:29,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:31,165 INFO L129 PetriNetUnfolder]: 777/3417 cut-off events. [2022-07-21 08:59:31,165 INFO L130 PetriNetUnfolder]: For 31100/31129 co-relation queries the response was YES. [2022-07-21 08:59:31,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14462 conditions, 3417 events. 777/3417 cut-off events. For 31100/31129 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 30334 event pairs, 347 based on Foata normal form. 31/3284 useless extension candidates. Maximal degree in co-relation 14326. Up to 777 conditions per place. [2022-07-21 08:59:31,210 INFO L132 encePairwiseOnDemand]: 146/174 looper letters, 261 selfloop transitions, 91 changer transitions 73/512 dead transitions. [2022-07-21 08:59:31,210 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 512 transitions, 5540 flow [2022-07-21 08:59:31,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-21 08:59:31,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-21 08:59:31,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3534 transitions. [2022-07-21 08:59:31,212 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6154649947753396 [2022-07-21 08:59:31,212 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3534 transitions. [2022-07-21 08:59:31,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3534 transitions. [2022-07-21 08:59:31,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:31,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3534 transitions. [2022-07-21 08:59:31,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 107.0909090909091) internal successors, (3534), 33 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:31,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:31,218 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:31,218 INFO L186 Difference]: Start difference. First operand has 379 places, 308 transitions, 2676 flow. Second operand 33 states and 3534 transitions. [2022-07-21 08:59:31,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 512 transitions, 5540 flow [2022-07-21 08:59:31,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 512 transitions, 5228 flow, removed 122 selfloop flow, removed 20 redundant places. [2022-07-21 08:59:31,322 INFO L242 Difference]: Finished difference. Result has 393 places, 317 transitions, 2986 flow [2022-07-21 08:59:31,323 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2546, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2986, PETRI_PLACES=393, PETRI_TRANSITIONS=317} [2022-07-21 08:59:31,323 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 236 predicate places. [2022-07-21 08:59:31,323 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 317 transitions, 2986 flow [2022-07-21 08:59:31,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:31,324 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:31,324 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] [2022-07-21 08:59:31,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-07-21 08:59:31,324 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:31,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:31,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1553984415, now seen corresponding path program 6 times [2022-07-21 08:59:31,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:31,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140091294] [2022-07-21 08:59:31,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:31,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:31,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:31,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:31,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140091294] [2022-07-21 08:59:31,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140091294] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:31,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:31,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:59:31,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364618742] [2022-07-21 08:59:31,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:31,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:59:31,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:31,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:59:31,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:59:31,373 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-07-21 08:59:31,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 317 transitions, 2986 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:31,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:31,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-07-21 08:59:31,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:31,544 INFO L129 PetriNetUnfolder]: 91/902 cut-off events. [2022-07-21 08:59:31,544 INFO L130 PetriNetUnfolder]: For 7711/7734 co-relation queries the response was YES. [2022-07-21 08:59:31,553 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3309 conditions, 902 events. 91/902 cut-off events. For 7711/7734 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5434 event pairs, 56 based on Foata normal form. 22/879 useless extension candidates. Maximal degree in co-relation 3165. Up to 79 conditions per place. [2022-07-21 08:59:31,554 INFO L132 encePairwiseOnDemand]: 166/174 looper letters, 36 selfloop transitions, 4 changer transitions 22/211 dead transitions. [2022-07-21 08:59:31,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 211 transitions, 1514 flow [2022-07-21 08:59:31,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:59:31,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:59:31,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 740 transitions. [2022-07-21 08:59:31,555 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8505747126436781 [2022-07-21 08:59:31,555 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 740 transitions. [2022-07-21 08:59:31,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 740 transitions. [2022-07-21 08:59:31,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:31,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 740 transitions. [2022-07-21 08:59:31,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:31,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:31,557 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:31,557 INFO L186 Difference]: Start difference. First operand has 393 places, 317 transitions, 2986 flow. Second operand 5 states and 740 transitions. [2022-07-21 08:59:31,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 211 transitions, 1514 flow [2022-07-21 08:59:31,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 211 transitions, 1293 flow, removed 83 selfloop flow, removed 59 redundant places. [2022-07-21 08:59:31,582 INFO L242 Difference]: Finished difference. Result has 277 places, 184 transitions, 940 flow [2022-07-21 08:59:31,582 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1145, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=940, PETRI_PLACES=277, PETRI_TRANSITIONS=184} [2022-07-21 08:59:31,582 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 120 predicate places. [2022-07-21 08:59:31,582 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 184 transitions, 940 flow [2022-07-21 08:59:31,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:31,582 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:31,583 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] [2022-07-21 08:59:31,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-07-21 08:59:31,583 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:31,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:31,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1250025809, now seen corresponding path program 7 times [2022-07-21 08:59:31,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:31,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295554059] [2022-07-21 08:59:31,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:31,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:31,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:31,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:31,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295554059] [2022-07-21 08:59:31,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295554059] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:31,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:31,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:31,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647067394] [2022-07-21 08:59:31,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:31,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:31,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:31,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:31,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:31,799 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:31,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 184 transitions, 940 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:31,799 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:31,799 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:31,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:33,543 INFO L129 PetriNetUnfolder]: 395/1772 cut-off events. [2022-07-21 08:59:33,543 INFO L130 PetriNetUnfolder]: For 7619/7619 co-relation queries the response was YES. [2022-07-21 08:59:33,556 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5813 conditions, 1772 events. 395/1772 cut-off events. For 7619/7619 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 12641 event pairs, 160 based on Foata normal form. 1/1713 useless extension candidates. Maximal degree in co-relation 5724. Up to 432 conditions per place. [2022-07-21 08:59:33,560 INFO L132 encePairwiseOnDemand]: 148/174 looper letters, 183 selfloop transitions, 20 changer transitions 78/366 dead transitions. [2022-07-21 08:59:33,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 366 transitions, 2584 flow [2022-07-21 08:59:33,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-21 08:59:33,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-21 08:59:33,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4022 transitions. [2022-07-21 08:59:33,563 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6082879612825166 [2022-07-21 08:59:33,563 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4022 transitions. [2022-07-21 08:59:33,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4022 transitions. [2022-07-21 08:59:33,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:33,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4022 transitions. [2022-07-21 08:59:33,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 105.84210526315789) internal successors, (4022), 38 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:33,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 174.0) internal successors, (6786), 39 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:33,570 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 174.0) internal successors, (6786), 39 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:33,570 INFO L186 Difference]: Start difference. First operand has 277 places, 184 transitions, 940 flow. Second operand 38 states and 4022 transitions. [2022-07-21 08:59:33,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 366 transitions, 2584 flow [2022-07-21 08:59:33,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 366 transitions, 2416 flow, removed 36 selfloop flow, removed 17 redundant places. [2022-07-21 08:59:33,590 INFO L242 Difference]: Finished difference. Result has 320 places, 184 transitions, 972 flow [2022-07-21 08:59:33,590 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=972, PETRI_PLACES=320, PETRI_TRANSITIONS=184} [2022-07-21 08:59:33,590 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 163 predicate places. [2022-07-21 08:59:33,591 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 184 transitions, 972 flow [2022-07-21 08:59:33,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:33,591 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:33,591 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] [2022-07-21 08:59:33,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-07-21 08:59:33,592 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:33,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:33,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1744371307, now seen corresponding path program 3 times [2022-07-21 08:59:33,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:33,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792765939] [2022-07-21 08:59:33,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:33,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:33,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:33,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792765939] [2022-07-21 08:59:33,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792765939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:33,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:33,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:59:33,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204814047] [2022-07-21 08:59:33,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:33,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:59:33,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:33,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:59:33,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:59:33,642 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-07-21 08:59:33,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 184 transitions, 972 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:33,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:33,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-07-21 08:59:33,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:33,813 INFO L129 PetriNetUnfolder]: 76/729 cut-off events. [2022-07-21 08:59:33,813 INFO L130 PetriNetUnfolder]: For 2445/2452 co-relation queries the response was YES. [2022-07-21 08:59:33,823 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2189 conditions, 729 events. 76/729 cut-off events. For 2445/2452 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3990 event pairs, 46 based on Foata normal form. 5/692 useless extension candidates. Maximal degree in co-relation 2081. Up to 79 conditions per place. [2022-07-21 08:59:33,825 INFO L132 encePairwiseOnDemand]: 169/174 looper letters, 32 selfloop transitions, 1 changer transitions 6/183 dead transitions. [2022-07-21 08:59:33,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 183 transitions, 1023 flow [2022-07-21 08:59:33,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:59:33,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:59:33,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 729 transitions. [2022-07-21 08:59:33,827 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8379310344827586 [2022-07-21 08:59:33,827 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 729 transitions. [2022-07-21 08:59:33,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 729 transitions. [2022-07-21 08:59:33,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:33,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 729 transitions. [2022-07-21 08:59:33,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.8) internal successors, (729), 5 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:33,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:33,828 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:33,828 INFO L186 Difference]: Start difference. First operand has 320 places, 184 transitions, 972 flow. Second operand 5 states and 729 transitions. [2022-07-21 08:59:33,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 183 transitions, 1023 flow [2022-07-21 08:59:33,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 183 transitions, 932 flow, removed 31 selfloop flow, removed 34 redundant places. [2022-07-21 08:59:33,840 INFO L242 Difference]: Finished difference. Result has 257 places, 175 transitions, 799 flow [2022-07-21 08:59:33,840 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=799, PETRI_PLACES=257, PETRI_TRANSITIONS=175} [2022-07-21 08:59:33,840 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 100 predicate places. [2022-07-21 08:59:33,841 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 175 transitions, 799 flow [2022-07-21 08:59:33,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:33,841 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:33,841 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] [2022-07-21 08:59:33,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-07-21 08:59:33,842 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:33,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:33,842 INFO L85 PathProgramCache]: Analyzing trace with hash -367912345, now seen corresponding path program 8 times [2022-07-21 08:59:33,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:33,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261531958] [2022-07-21 08:59:33,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:33,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:34,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:34,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261531958] [2022-07-21 08:59:34,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261531958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:34,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:34,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:34,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247344864] [2022-07-21 08:59:34,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:34,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:34,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:34,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:34,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:34,039 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:34,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 175 transitions, 799 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:34,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:34,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:34,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:35,077 INFO L129 PetriNetUnfolder]: 343/1321 cut-off events. [2022-07-21 08:59:35,078 INFO L130 PetriNetUnfolder]: For 4469/4469 co-relation queries the response was YES. [2022-07-21 08:59:35,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4466 conditions, 1321 events. 343/1321 cut-off events. For 4469/4469 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8239 event pairs, 156 based on Foata normal form. 1/1258 useless extension candidates. Maximal degree in co-relation 4388. Up to 432 conditions per place. [2022-07-21 08:59:35,088 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 143 selfloop transitions, 35 changer transitions 35/298 dead transitions. [2022-07-21 08:59:35,088 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 298 transitions, 2187 flow [2022-07-21 08:59:35,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 08:59:35,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-21 08:59:35,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2756 transitions. [2022-07-21 08:59:35,090 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6091954022988506 [2022-07-21 08:59:35,090 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2756 transitions. [2022-07-21 08:59:35,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2756 transitions. [2022-07-21 08:59:35,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:35,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2756 transitions. [2022-07-21 08:59:35,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 106.0) internal successors, (2756), 26 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) [2022-07-21 08:59:35,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:35,094 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:35,094 INFO L186 Difference]: Start difference. First operand has 257 places, 175 transitions, 799 flow. Second operand 26 states and 2756 transitions. [2022-07-21 08:59:35,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 298 transitions, 2187 flow [2022-07-21 08:59:35,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 298 transitions, 2138 flow, removed 5 selfloop flow, removed 8 redundant places. [2022-07-21 08:59:35,106 INFO L242 Difference]: Finished difference. Result has 284 places, 195 transitions, 1190 flow [2022-07-21 08:59:35,106 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1190, PETRI_PLACES=284, PETRI_TRANSITIONS=195} [2022-07-21 08:59:35,107 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 127 predicate places. [2022-07-21 08:59:35,107 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 195 transitions, 1190 flow [2022-07-21 08:59:35,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:35,107 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:35,107 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] [2022-07-21 08:59:35,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-07-21 08:59:35,107 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:35,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:35,108 INFO L85 PathProgramCache]: Analyzing trace with hash 596934951, now seen corresponding path program 9 times [2022-07-21 08:59:35,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:35,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438099279] [2022-07-21 08:59:35,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:35,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:35,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:35,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:35,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438099279] [2022-07-21 08:59:35,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438099279] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:35,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:35,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:35,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781261073] [2022-07-21 08:59:35,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:35,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:35,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:35,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:35,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:35,333 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:35,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 195 transitions, 1190 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:35,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:35,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:35,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:36,761 INFO L129 PetriNetUnfolder]: 424/1698 cut-off events. [2022-07-21 08:59:36,761 INFO L130 PetriNetUnfolder]: For 9372/9372 co-relation queries the response was YES. [2022-07-21 08:59:36,775 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6552 conditions, 1698 events. 424/1698 cut-off events. For 9372/9372 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 11896 event pairs, 201 based on Foata normal form. 1/1616 useless extension candidates. Maximal degree in co-relation 6462. Up to 432 conditions per place. [2022-07-21 08:59:36,780 INFO L132 encePairwiseOnDemand]: 149/174 looper letters, 196 selfloop transitions, 31 changer transitions 74/386 dead transitions. [2022-07-21 08:59:36,780 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 386 transitions, 3272 flow [2022-07-21 08:59:36,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-21 08:59:36,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-21 08:59:36,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3823 transitions. [2022-07-21 08:59:36,782 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6103128991060025 [2022-07-21 08:59:36,782 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3823 transitions. [2022-07-21 08:59:36,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3823 transitions. [2022-07-21 08:59:36,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:36,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3823 transitions. [2022-07-21 08:59:36,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 106.19444444444444) internal successors, (3823), 36 states have internal predecessors, (3823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:36,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 174.0) internal successors, (6438), 37 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:36,788 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 174.0) internal successors, (6438), 37 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:36,788 INFO L186 Difference]: Start difference. First operand has 284 places, 195 transitions, 1190 flow. Second operand 36 states and 3823 transitions. [2022-07-21 08:59:36,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 386 transitions, 3272 flow [2022-07-21 08:59:36,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 386 transitions, 2969 flow, removed 112 selfloop flow, removed 17 redundant places. [2022-07-21 08:59:36,818 INFO L242 Difference]: Finished difference. Result has 321 places, 201 transitions, 1327 flow [2022-07-21 08:59:36,819 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=1327, PETRI_PLACES=321, PETRI_TRANSITIONS=201} [2022-07-21 08:59:36,819 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 164 predicate places. [2022-07-21 08:59:36,819 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 201 transitions, 1327 flow [2022-07-21 08:59:36,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:36,820 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:36,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:36,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-07-21 08:59:36,820 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:36,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:36,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1161914407, now seen corresponding path program 10 times [2022-07-21 08:59:36,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:36,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804164370] [2022-07-21 08:59:36,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:36,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:37,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:37,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:37,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804164370] [2022-07-21 08:59:37,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804164370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:37,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:37,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:37,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931299328] [2022-07-21 08:59:37,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:37,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:37,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:37,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:37,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:37,022 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:37,022 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 201 transitions, 1327 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:37,022 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:37,022 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:37,022 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:38,362 INFO L129 PetriNetUnfolder]: 423/1689 cut-off events. [2022-07-21 08:59:38,362 INFO L130 PetriNetUnfolder]: For 10565/10565 co-relation queries the response was YES. [2022-07-21 08:59:38,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6911 conditions, 1689 events. 423/1689 cut-off events. For 10565/10565 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 11834 event pairs, 179 based on Foata normal form. 1/1612 useless extension candidates. Maximal degree in co-relation 6800. Up to 432 conditions per place. [2022-07-21 08:59:38,382 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 162 selfloop transitions, 36 changer transitions 74/357 dead transitions. [2022-07-21 08:59:38,382 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 357 transitions, 3252 flow [2022-07-21 08:59:38,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 08:59:38,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-21 08:59:38,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3690 transitions. [2022-07-21 08:59:38,385 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6059113300492611 [2022-07-21 08:59:38,385 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3690 transitions. [2022-07-21 08:59:38,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3690 transitions. [2022-07-21 08:59:38,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:38,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3690 transitions. [2022-07-21 08:59:38,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 105.42857142857143) internal successors, (3690), 35 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:38,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:38,391 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:38,391 INFO L186 Difference]: Start difference. First operand has 321 places, 201 transitions, 1327 flow. Second operand 35 states and 3690 transitions. [2022-07-21 08:59:38,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 357 transitions, 3252 flow [2022-07-21 08:59:38,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 357 transitions, 2898 flow, removed 155 selfloop flow, removed 30 redundant places. [2022-07-21 08:59:38,423 INFO L242 Difference]: Finished difference. Result has 326 places, 201 transitions, 1406 flow [2022-07-21 08:59:38,424 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1406, PETRI_PLACES=326, PETRI_TRANSITIONS=201} [2022-07-21 08:59:38,424 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 169 predicate places. [2022-07-21 08:59:38,424 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 201 transitions, 1406 flow [2022-07-21 08:59:38,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:38,424 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:38,424 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] [2022-07-21 08:59:38,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-07-21 08:59:38,424 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:38,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:38,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1886932905, now seen corresponding path program 11 times [2022-07-21 08:59:38,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:38,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437993256] [2022-07-21 08:59:38,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:38,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:38,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:38,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437993256] [2022-07-21 08:59:38,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437993256] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:38,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:38,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:38,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212471601] [2022-07-21 08:59:38,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:38,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:38,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:38,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:38,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:38,603 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:38,604 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 201 transitions, 1406 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:38,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:38,604 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:38,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:39,930 INFO L129 PetriNetUnfolder]: 449/1830 cut-off events. [2022-07-21 08:59:39,930 INFO L130 PetriNetUnfolder]: For 14939/14939 co-relation queries the response was YES. [2022-07-21 08:59:39,945 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7738 conditions, 1830 events. 449/1830 cut-off events. For 14939/14939 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 13159 event pairs, 186 based on Foata normal form. 1/1741 useless extension candidates. Maximal degree in co-relation 7625. Up to 432 conditions per place. [2022-07-21 08:59:39,950 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 180 selfloop transitions, 34 changer transitions 63/362 dead transitions. [2022-07-21 08:59:39,950 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 362 transitions, 3620 flow [2022-07-21 08:59:39,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-21 08:59:39,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-21 08:59:39,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3385 transitions. [2022-07-21 08:59:39,952 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6079382183908046 [2022-07-21 08:59:39,952 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3385 transitions. [2022-07-21 08:59:39,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3385 transitions. [2022-07-21 08:59:39,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:39,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3385 transitions. [2022-07-21 08:59:39,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 105.78125) internal successors, (3385), 32 states have internal predecessors, (3385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:39,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:39,958 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:39,958 INFO L186 Difference]: Start difference. First operand has 326 places, 201 transitions, 1406 flow. Second operand 32 states and 3385 transitions. [2022-07-21 08:59:39,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 362 transitions, 3620 flow [2022-07-21 08:59:39,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 362 transitions, 3236 flow, removed 135 selfloop flow, removed 34 redundant places. [2022-07-21 08:59:39,992 INFO L242 Difference]: Finished difference. Result has 321 places, 207 transitions, 1602 flow [2022-07-21 08:59:39,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1284, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1602, PETRI_PLACES=321, PETRI_TRANSITIONS=207} [2022-07-21 08:59:39,993 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 164 predicate places. [2022-07-21 08:59:39,993 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 207 transitions, 1602 flow [2022-07-21 08:59:39,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:39,993 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:39,993 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] [2022-07-21 08:59:39,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-07-21 08:59:39,994 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:39,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:39,994 INFO L85 PathProgramCache]: Analyzing trace with hash 230531765, now seen corresponding path program 12 times [2022-07-21 08:59:39,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:39,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760729937] [2022-07-21 08:59:39,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:39,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:40,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:40,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:40,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760729937] [2022-07-21 08:59:40,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760729937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:40,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:40,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:40,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76102812] [2022-07-21 08:59:40,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:40,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:40,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:40,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:40,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:40,189 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:40,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 207 transitions, 1602 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:40,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:40,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:40,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:41,640 INFO L129 PetriNetUnfolder]: 542/2282 cut-off events. [2022-07-21 08:59:41,641 INFO L130 PetriNetUnfolder]: For 21847/21855 co-relation queries the response was YES. [2022-07-21 08:59:41,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10148 conditions, 2282 events. 542/2282 cut-off events. For 21847/21855 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 18177 event pairs, 240 based on Foata normal form. 2/2175 useless extension candidates. Maximal degree in co-relation 10038. Up to 432 conditions per place. [2022-07-21 08:59:41,666 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 191 selfloop transitions, 40 changer transitions 84/400 dead transitions. [2022-07-21 08:59:41,666 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 400 transitions, 4346 flow [2022-07-21 08:59:41,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-21 08:59:41,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-21 08:59:41,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3614 transitions. [2022-07-21 08:59:41,668 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6108857336037864 [2022-07-21 08:59:41,668 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3614 transitions. [2022-07-21 08:59:41,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3614 transitions. [2022-07-21 08:59:41,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:41,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3614 transitions. [2022-07-21 08:59:41,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 106.29411764705883) internal successors, (3614), 34 states have internal predecessors, (3614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:41,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 174.0) internal successors, (6090), 35 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:41,674 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 174.0) internal successors, (6090), 35 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:41,674 INFO L186 Difference]: Start difference. First operand has 321 places, 207 transitions, 1602 flow. Second operand 34 states and 3614 transitions. [2022-07-21 08:59:41,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 400 transitions, 4346 flow [2022-07-21 08:59:41,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 400 transitions, 3923 flow, removed 195 selfloop flow, removed 26 redundant places. [2022-07-21 08:59:41,728 INFO L242 Difference]: Finished difference. Result has 335 places, 213 transitions, 1838 flow [2022-07-21 08:59:41,728 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1523, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1838, PETRI_PLACES=335, PETRI_TRANSITIONS=213} [2022-07-21 08:59:41,728 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 178 predicate places. [2022-07-21 08:59:41,728 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 213 transitions, 1838 flow [2022-07-21 08:59:41,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:41,729 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:41,729 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] [2022-07-21 08:59:41,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-07-21 08:59:41,729 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:41,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:41,729 INFO L85 PathProgramCache]: Analyzing trace with hash 573426529, now seen corresponding path program 13 times [2022-07-21 08:59:41,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:41,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639330112] [2022-07-21 08:59:41,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:41,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:41,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:41,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:41,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639330112] [2022-07-21 08:59:41,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639330112] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:41,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:41,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:41,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22349364] [2022-07-21 08:59:41,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:41,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:41,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:41,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:41,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:41,911 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:41,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 213 transitions, 1838 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:41,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:41,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:41,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:43,375 INFO L129 PetriNetUnfolder]: 504/2181 cut-off events. [2022-07-21 08:59:43,376 INFO L130 PetriNetUnfolder]: For 21365/21371 co-relation queries the response was YES. [2022-07-21 08:59:43,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9628 conditions, 2181 events. 504/2181 cut-off events. For 21365/21371 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 16989 event pairs, 249 based on Foata normal form. 3/2081 useless extension candidates. Maximal degree in co-relation 9510. Up to 432 conditions per place. [2022-07-21 08:59:43,403 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 182 selfloop transitions, 39 changer transitions 73/379 dead transitions. [2022-07-21 08:59:43,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 379 transitions, 3986 flow [2022-07-21 08:59:43,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-21 08:59:43,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-21 08:59:43,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3599 transitions. [2022-07-21 08:59:43,406 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6083502366463827 [2022-07-21 08:59:43,406 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3599 transitions. [2022-07-21 08:59:43,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3599 transitions. [2022-07-21 08:59:43,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:43,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3599 transitions. [2022-07-21 08:59:43,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 105.8529411764706) internal successors, (3599), 34 states have internal predecessors, (3599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:43,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 174.0) internal successors, (6090), 35 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:43,411 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 174.0) internal successors, (6090), 35 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:43,411 INFO L186 Difference]: Start difference. First operand has 335 places, 213 transitions, 1838 flow. Second operand 34 states and 3599 transitions. [2022-07-21 08:59:43,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 379 transitions, 3986 flow [2022-07-21 08:59:43,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 379 transitions, 3637 flow, removed 150 selfloop flow, removed 28 redundant places. [2022-07-21 08:59:43,466 INFO L242 Difference]: Finished difference. Result has 342 places, 214 transitions, 1943 flow [2022-07-21 08:59:43,467 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1943, PETRI_PLACES=342, PETRI_TRANSITIONS=214} [2022-07-21 08:59:43,467 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 185 predicate places. [2022-07-21 08:59:43,467 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 214 transitions, 1943 flow [2022-07-21 08:59:43,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:43,467 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:43,467 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] [2022-07-21 08:59:43,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-07-21 08:59:43,468 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:43,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:43,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1327899901, now seen corresponding path program 14 times [2022-07-21 08:59:43,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:43,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165066986] [2022-07-21 08:59:43,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:43,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:43,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:43,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:43,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165066986] [2022-07-21 08:59:43,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165066986] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:43,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:43,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:43,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968789790] [2022-07-21 08:59:43,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:43,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:43,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:43,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:43,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:43,669 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:43,670 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 214 transitions, 1943 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:43,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:43,670 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:43,670 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:45,085 INFO L129 PetriNetUnfolder]: 529/2162 cut-off events. [2022-07-21 08:59:45,085 INFO L130 PetriNetUnfolder]: For 24316/24327 co-relation queries the response was YES. [2022-07-21 08:59:45,106 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10075 conditions, 2162 events. 529/2162 cut-off events. For 24316/24327 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 16793 event pairs, 264 based on Foata normal form. 4/2047 useless extension candidates. Maximal degree in co-relation 9954. Up to 432 conditions per place. [2022-07-21 08:59:45,112 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 188 selfloop transitions, 42 changer transitions 77/392 dead transitions. [2022-07-21 08:59:45,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 392 transitions, 4537 flow [2022-07-21 08:59:45,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-21 08:59:45,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-21 08:59:45,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3507 transitions. [2022-07-21 08:59:45,114 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6107628004179728 [2022-07-21 08:59:45,114 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3507 transitions. [2022-07-21 08:59:45,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3507 transitions. [2022-07-21 08:59:45,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:45,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3507 transitions. [2022-07-21 08:59:45,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 106.27272727272727) internal successors, (3507), 33 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:45,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:45,120 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:45,120 INFO L186 Difference]: Start difference. First operand has 342 places, 214 transitions, 1943 flow. Second operand 33 states and 3507 transitions. [2022-07-21 08:59:45,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 392 transitions, 4537 flow [2022-07-21 08:59:45,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 392 transitions, 3880 flow, removed 171 selfloop flow, removed 35 redundant places. [2022-07-21 08:59:45,169 INFO L242 Difference]: Finished difference. Result has 339 places, 215 transitions, 1856 flow [2022-07-21 08:59:45,169 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1688, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1856, PETRI_PLACES=339, PETRI_TRANSITIONS=215} [2022-07-21 08:59:45,170 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 182 predicate places. [2022-07-21 08:59:45,170 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 215 transitions, 1856 flow [2022-07-21 08:59:45,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:45,170 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:45,170 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] [2022-07-21 08:59:45,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-07-21 08:59:45,171 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:45,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:45,171 INFO L85 PathProgramCache]: Analyzing trace with hash -530843921, now seen corresponding path program 15 times [2022-07-21 08:59:45,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:45,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380263850] [2022-07-21 08:59:45,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:45,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:45,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:45,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:45,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380263850] [2022-07-21 08:59:45,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380263850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:45,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:45,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:45,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415530099] [2022-07-21 08:59:45,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:45,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:45,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:45,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:45,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:45,351 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:45,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 215 transitions, 1856 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:45,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:45,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:45,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:46,627 INFO L129 PetriNetUnfolder]: 499/2095 cut-off events. [2022-07-21 08:59:46,627 INFO L130 PetriNetUnfolder]: For 18900/18913 co-relation queries the response was YES. [2022-07-21 08:59:46,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9511 conditions, 2095 events. 499/2095 cut-off events. For 18900/18913 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 16185 event pairs, 228 based on Foata normal form. 5/2005 useless extension candidates. Maximal degree in co-relation 9394. Up to 432 conditions per place. [2022-07-21 08:59:46,651 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 181 selfloop transitions, 43 changer transitions 72/381 dead transitions. [2022-07-21 08:59:46,651 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 381 transitions, 4259 flow [2022-07-21 08:59:46,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-21 08:59:46,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-21 08:59:46,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3398 transitions. [2022-07-21 08:59:46,653 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6102729885057471 [2022-07-21 08:59:46,653 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3398 transitions. [2022-07-21 08:59:46,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3398 transitions. [2022-07-21 08:59:46,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:46,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3398 transitions. [2022-07-21 08:59:46,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 106.1875) internal successors, (3398), 32 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:46,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:46,658 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:46,658 INFO L186 Difference]: Start difference. First operand has 339 places, 215 transitions, 1856 flow. Second operand 32 states and 3398 transitions. [2022-07-21 08:59:46,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 381 transitions, 4259 flow [2022-07-21 08:59:46,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 381 transitions, 3785 flow, removed 155 selfloop flow, removed 31 redundant places. [2022-07-21 08:59:46,705 INFO L242 Difference]: Finished difference. Result has 339 places, 216 transitions, 1870 flow [2022-07-21 08:59:46,705 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1706, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1870, PETRI_PLACES=339, PETRI_TRANSITIONS=216} [2022-07-21 08:59:46,706 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 182 predicate places. [2022-07-21 08:59:46,706 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 216 transitions, 1870 flow [2022-07-21 08:59:46,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:46,706 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:46,706 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] [2022-07-21 08:59:46,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-07-21 08:59:46,707 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:46,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:46,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1247392525, now seen corresponding path program 16 times [2022-07-21 08:59:46,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:46,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008396631] [2022-07-21 08:59:46,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:46,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:46,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:46,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:46,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008396631] [2022-07-21 08:59:46,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008396631] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:46,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:46,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:46,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010728010] [2022-07-21 08:59:46,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:46,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:46,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:46,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:46,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:46,904 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:46,904 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 216 transitions, 1870 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:46,904 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:46,904 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:46,904 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:47,924 INFO L129 PetriNetUnfolder]: 475/1998 cut-off events. [2022-07-21 08:59:47,924 INFO L130 PetriNetUnfolder]: For 17746/17759 co-relation queries the response was YES. [2022-07-21 08:59:47,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8945 conditions, 1998 events. 475/1998 cut-off events. For 17746/17759 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 14911 event pairs, 248 based on Foata normal form. 4/1887 useless extension candidates. Maximal degree in co-relation 8829. Up to 432 conditions per place. [2022-07-21 08:59:47,948 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 156 selfloop transitions, 68 changer transitions 42/351 dead transitions. [2022-07-21 08:59:47,948 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 351 transitions, 4335 flow [2022-07-21 08:59:47,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 08:59:47,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 08:59:47,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2555 transitions. [2022-07-21 08:59:47,950 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6118295019157088 [2022-07-21 08:59:47,950 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2555 transitions. [2022-07-21 08:59:47,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2555 transitions. [2022-07-21 08:59:47,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:47,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2555 transitions. [2022-07-21 08:59:47,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 106.45833333333333) internal successors, (2555), 24 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:47,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:47,954 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:47,954 INFO L186 Difference]: Start difference. First operand has 339 places, 216 transitions, 1870 flow. Second operand 24 states and 2555 transitions. [2022-07-21 08:59:47,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 351 transitions, 4335 flow [2022-07-21 08:59:47,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 351 transitions, 3871 flow, removed 113 selfloop flow, removed 30 redundant places. [2022-07-21 08:59:48,001 INFO L242 Difference]: Finished difference. Result has 326 places, 245 transitions, 2567 flow [2022-07-21 08:59:48,001 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2567, PETRI_PLACES=326, PETRI_TRANSITIONS=245} [2022-07-21 08:59:48,002 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 169 predicate places. [2022-07-21 08:59:48,002 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 245 transitions, 2567 flow [2022-07-21 08:59:48,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:48,002 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:48,002 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] [2022-07-21 08:59:48,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-07-21 08:59:48,002 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:48,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:48,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1564357863, now seen corresponding path program 17 times [2022-07-21 08:59:48,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:48,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564235504] [2022-07-21 08:59:48,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:48,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:48,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:48,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:48,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564235504] [2022-07-21 08:59:48,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564235504] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:48,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:48,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:48,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720763317] [2022-07-21 08:59:48,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:48,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:48,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:48,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:48,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:48,195 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:48,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 245 transitions, 2567 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:48,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:48,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:48,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:49,454 INFO L129 PetriNetUnfolder]: 485/2002 cut-off events. [2022-07-21 08:59:49,454 INFO L130 PetriNetUnfolder]: For 17072/17085 co-relation queries the response was YES. [2022-07-21 08:59:49,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9219 conditions, 2002 events. 485/2002 cut-off events. For 17072/17085 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 15020 event pairs, 243 based on Foata normal form. 4/1902 useless extension candidates. Maximal degree in co-relation 9110. Up to 432 conditions per place. [2022-07-21 08:59:49,478 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 180 selfloop transitions, 60 changer transitions 63/388 dead transitions. [2022-07-21 08:59:49,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 388 transitions, 4635 flow [2022-07-21 08:59:49,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 08:59:49,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-21 08:59:49,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3288 transitions. [2022-07-21 08:59:49,480 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6095661846496107 [2022-07-21 08:59:49,481 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3288 transitions. [2022-07-21 08:59:49,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3288 transitions. [2022-07-21 08:59:49,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:49,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3288 transitions. [2022-07-21 08:59:49,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 106.06451612903226) internal successors, (3288), 31 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:49,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:49,486 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:49,486 INFO L186 Difference]: Start difference. First operand has 326 places, 245 transitions, 2567 flow. Second operand 31 states and 3288 transitions. [2022-07-21 08:59:49,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 388 transitions, 4635 flow [2022-07-21 08:59:49,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 388 transitions, 3801 flow, removed 345 selfloop flow, removed 15 redundant places. [2022-07-21 08:59:49,541 INFO L242 Difference]: Finished difference. Result has 353 places, 243 transitions, 2285 flow [2022-07-21 08:59:49,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2285, PETRI_PLACES=353, PETRI_TRANSITIONS=243} [2022-07-21 08:59:49,541 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 196 predicate places. [2022-07-21 08:59:49,541 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 243 transitions, 2285 flow [2022-07-21 08:59:49,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:49,542 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:49,542 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] [2022-07-21 08:59:49,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-07-21 08:59:49,542 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:49,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:49,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1449984001, now seen corresponding path program 18 times [2022-07-21 08:59:49,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:49,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243532695] [2022-07-21 08:59:49,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:49,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:49,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:49,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:49,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243532695] [2022-07-21 08:59:49,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243532695] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:49,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:49,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:49,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325214660] [2022-07-21 08:59:49,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:49,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:49,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:49,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:49,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:49,734 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:49,735 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 243 transitions, 2285 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:49,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:49,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:49,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:50,922 INFO L129 PetriNetUnfolder]: 467/1979 cut-off events. [2022-07-21 08:59:50,922 INFO L130 PetriNetUnfolder]: For 15745/15755 co-relation queries the response was YES. [2022-07-21 08:59:50,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8710 conditions, 1979 events. 467/1979 cut-off events. For 15745/15755 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 14730 event pairs, 217 based on Foata normal form. 5/1894 useless extension candidates. Maximal degree in co-relation 8589. Up to 432 conditions per place. [2022-07-21 08:59:50,944 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 161 selfloop transitions, 62 changer transitions 58/366 dead transitions. [2022-07-21 08:59:50,944 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 366 transitions, 4010 flow [2022-07-21 08:59:50,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-21 08:59:50,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-21 08:59:50,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3169 transitions. [2022-07-21 08:59:50,947 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6070881226053639 [2022-07-21 08:59:50,947 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3169 transitions. [2022-07-21 08:59:50,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3169 transitions. [2022-07-21 08:59:50,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:50,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3169 transitions. [2022-07-21 08:59:50,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 105.63333333333334) internal successors, (3169), 30 states have internal predecessors, (3169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:50,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:50,952 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:50,952 INFO L186 Difference]: Start difference. First operand has 353 places, 243 transitions, 2285 flow. Second operand 30 states and 3169 transitions. [2022-07-21 08:59:50,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 366 transitions, 4010 flow [2022-07-21 08:59:50,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 366 transitions, 3656 flow, removed 74 selfloop flow, removed 30 redundant places. [2022-07-21 08:59:51,002 INFO L242 Difference]: Finished difference. Result has 351 places, 245 transitions, 2314 flow [2022-07-21 08:59:51,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2091, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2314, PETRI_PLACES=351, PETRI_TRANSITIONS=245} [2022-07-21 08:59:51,002 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 194 predicate places. [2022-07-21 08:59:51,003 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 245 transitions, 2314 flow [2022-07-21 08:59:51,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:51,003 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:51,003 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] [2022-07-21 08:59:51,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-07-21 08:59:51,003 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:51,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:51,003 INFO L85 PathProgramCache]: Analyzing trace with hash 31822443, now seen corresponding path program 19 times [2022-07-21 08:59:51,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:51,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262019911] [2022-07-21 08:59:51,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:51,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:51,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:51,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:51,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262019911] [2022-07-21 08:59:51,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262019911] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:51,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:51,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:51,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827739065] [2022-07-21 08:59:51,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:51,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:51,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:51,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:51,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:51,189 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:51,189 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 245 transitions, 2314 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:51,189 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:51,189 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:51,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:52,257 INFO L129 PetriNetUnfolder]: 459/1932 cut-off events. [2022-07-21 08:59:52,258 INFO L130 PetriNetUnfolder]: For 15451/15462 co-relation queries the response was YES. [2022-07-21 08:59:52,277 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8608 conditions, 1932 events. 459/1932 cut-off events. For 15451/15462 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 14262 event pairs, 231 based on Foata normal form. 4/1840 useless extension candidates. Maximal degree in co-relation 8489. Up to 432 conditions per place. [2022-07-21 08:59:52,282 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 153 selfloop transitions, 67 changer transitions 46/351 dead transitions. [2022-07-21 08:59:52,282 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 351 transitions, 3900 flow [2022-07-21 08:59:52,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 08:59:52,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-21 08:59:52,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2756 transitions. [2022-07-21 08:59:52,284 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6091954022988506 [2022-07-21 08:59:52,284 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2756 transitions. [2022-07-21 08:59:52,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2756 transitions. [2022-07-21 08:59:52,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:52,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2756 transitions. [2022-07-21 08:59:52,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 106.0) internal successors, (2756), 26 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) [2022-07-21 08:59:52,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:52,288 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:52,288 INFO L186 Difference]: Start difference. First operand has 351 places, 245 transitions, 2314 flow. Second operand 26 states and 2756 transitions. [2022-07-21 08:59:52,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 351 transitions, 3900 flow [2022-07-21 08:59:52,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 351 transitions, 3712 flow, removed 53 selfloop flow, removed 24 redundant places. [2022-07-21 08:59:52,338 INFO L242 Difference]: Finished difference. Result has 345 places, 251 transitions, 2493 flow [2022-07-21 08:59:52,339 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2196, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2493, PETRI_PLACES=345, PETRI_TRANSITIONS=251} [2022-07-21 08:59:52,339 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 188 predicate places. [2022-07-21 08:59:52,339 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 251 transitions, 2493 flow [2022-07-21 08:59:52,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:52,339 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:52,339 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] [2022-07-21 08:59:52,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-07-21 08:59:52,340 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:52,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:52,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1524091547, now seen corresponding path program 20 times [2022-07-21 08:59:52,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:52,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779549966] [2022-07-21 08:59:52,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:52,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:52,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:52,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:52,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779549966] [2022-07-21 08:59:52,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779549966] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:52,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:52,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:52,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737632677] [2022-07-21 08:59:52,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:52,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:52,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:52,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:52,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:52,530 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:52,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 251 transitions, 2493 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:52,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:52,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:52,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:53,600 INFO L129 PetriNetUnfolder]: 433/1845 cut-off events. [2022-07-21 08:59:53,600 INFO L130 PetriNetUnfolder]: For 14721/14732 co-relation queries the response was YES. [2022-07-21 08:59:53,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8105 conditions, 1845 events. 433/1845 cut-off events. For 14721/14732 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13340 event pairs, 222 based on Foata normal form. 4/1762 useless extension candidates. Maximal degree in co-relation 7991. Up to 432 conditions per place. [2022-07-21 08:59:53,620 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 152 selfloop transitions, 57 changer transitions 52/346 dead transitions. [2022-07-21 08:59:53,620 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 346 transitions, 3787 flow [2022-07-21 08:59:53,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 08:59:53,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-21 08:59:53,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2958 transitions. [2022-07-21 08:59:53,622 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2022-07-21 08:59:53,622 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2958 transitions. [2022-07-21 08:59:53,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2958 transitions. [2022-07-21 08:59:53,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:53,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2958 transitions. [2022-07-21 08:59:53,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 105.64285714285714) internal successors, (2958), 28 states have internal predecessors, (2958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:53,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:53,627 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:53,627 INFO L186 Difference]: Start difference. First operand has 345 places, 251 transitions, 2493 flow. Second operand 28 states and 2958 transitions. [2022-07-21 08:59:53,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 346 transitions, 3787 flow [2022-07-21 08:59:53,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 346 transitions, 3537 flow, removed 42 selfloop flow, removed 19 redundant places. [2022-07-21 08:59:53,671 INFO L242 Difference]: Finished difference. Result has 356 places, 243 transitions, 2271 flow [2022-07-21 08:59:53,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2271, PETRI_PLACES=356, PETRI_TRANSITIONS=243} [2022-07-21 08:59:53,672 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 199 predicate places. [2022-07-21 08:59:53,672 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 243 transitions, 2271 flow [2022-07-21 08:59:53,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:53,672 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:53,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:53,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-07-21 08:59:53,673 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:53,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:53,673 INFO L85 PathProgramCache]: Analyzing trace with hash 362925875, now seen corresponding path program 21 times [2022-07-21 08:59:53,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:53,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023644720] [2022-07-21 08:59:53,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:53,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:53,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:53,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:53,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023644720] [2022-07-21 08:59:53,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023644720] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:53,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:53,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:53,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026957087] [2022-07-21 08:59:53,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:53,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:53,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:53,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:53,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:53,860 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:53,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 243 transitions, 2271 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:53,860 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:53,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:53,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:54,990 INFO L129 PetriNetUnfolder]: 391/1627 cut-off events. [2022-07-21 08:59:54,990 INFO L130 PetriNetUnfolder]: For 13138/13142 co-relation queries the response was YES. [2022-07-21 08:59:55,006 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7068 conditions, 1627 events. 391/1627 cut-off events. For 13138/13142 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 11154 event pairs, 207 based on Foata normal form. 3/1546 useless extension candidates. Maximal degree in co-relation 6948. Up to 432 conditions per place. [2022-07-21 08:59:55,010 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 131 selfloop transitions, 29 changer transitions 61/306 dead transitions. [2022-07-21 08:59:55,010 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 306 transitions, 3066 flow [2022-07-21 08:59:55,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 08:59:55,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-21 08:59:55,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2739 transitions. [2022-07-21 08:59:55,012 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6054376657824934 [2022-07-21 08:59:55,012 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2739 transitions. [2022-07-21 08:59:55,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2739 transitions. [2022-07-21 08:59:55,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:55,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2739 transitions. [2022-07-21 08:59:55,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 105.34615384615384) internal successors, (2739), 26 states have internal predecessors, (2739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:55,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:55,016 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:55,016 INFO L186 Difference]: Start difference. First operand has 356 places, 243 transitions, 2271 flow. Second operand 26 states and 2739 transitions. [2022-07-21 08:59:55,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 306 transitions, 3066 flow [2022-07-21 08:59:55,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 306 transitions, 2883 flow, removed 44 selfloop flow, removed 22 redundant places. [2022-07-21 08:59:55,059 INFO L242 Difference]: Finished difference. Result has 348 places, 201 transitions, 1533 flow [2022-07-21 08:59:55,059 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1533, PETRI_PLACES=348, PETRI_TRANSITIONS=201} [2022-07-21 08:59:55,060 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 191 predicate places. [2022-07-21 08:59:55,060 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 201 transitions, 1533 flow [2022-07-21 08:59:55,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:55,060 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:55,060 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] [2022-07-21 08:59:55,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-07-21 08:59:55,061 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:55,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:55,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1782701479, now seen corresponding path program 22 times [2022-07-21 08:59:55,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:55,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638896947] [2022-07-21 08:59:55,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:55,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:55,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:55,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:55,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638896947] [2022-07-21 08:59:55,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638896947] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:55,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:55,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:55,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419749211] [2022-07-21 08:59:55,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:55,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:55,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:55,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:55,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:55,249 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:55,249 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 201 transitions, 1533 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:55,249 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:55,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:55,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:56,585 INFO L129 PetriNetUnfolder]: 438/1849 cut-off events. [2022-07-21 08:59:56,586 INFO L130 PetriNetUnfolder]: For 15431/15438 co-relation queries the response was YES. [2022-07-21 08:59:56,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7948 conditions, 1849 events. 438/1849 cut-off events. For 15431/15438 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 13540 event pairs, 208 based on Foata normal form. 3/1770 useless extension candidates. Maximal degree in co-relation 7837. Up to 432 conditions per place. [2022-07-21 08:59:56,605 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 170 selfloop transitions, 39 changer transitions 65/359 dead transitions. [2022-07-21 08:59:56,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 359 transitions, 3604 flow [2022-07-21 08:59:56,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-21 08:59:56,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-21 08:59:56,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3487 transitions. [2022-07-21 08:59:56,607 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.60727969348659 [2022-07-21 08:59:56,607 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3487 transitions. [2022-07-21 08:59:56,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3487 transitions. [2022-07-21 08:59:56,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:56,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3487 transitions. [2022-07-21 08:59:56,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 105.66666666666667) internal successors, (3487), 33 states have internal predecessors, (3487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:56,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:56,612 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:56,612 INFO L186 Difference]: Start difference. First operand has 348 places, 201 transitions, 1533 flow. Second operand 33 states and 3487 transitions. [2022-07-21 08:59:56,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 359 transitions, 3604 flow [2022-07-21 08:59:56,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 359 transitions, 3118 flow, removed 111 selfloop flow, removed 27 redundant places. [2022-07-21 08:59:56,647 INFO L242 Difference]: Finished difference. Result has 332 places, 207 transitions, 1666 flow [2022-07-21 08:59:56,647 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1666, PETRI_PLACES=332, PETRI_TRANSITIONS=207} [2022-07-21 08:59:56,647 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 175 predicate places. [2022-07-21 08:59:56,648 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 207 transitions, 1666 flow [2022-07-21 08:59:56,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:56,648 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:56,648 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] [2022-07-21 08:59:56,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-07-21 08:59:56,648 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:56,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:56,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1855099201, now seen corresponding path program 23 times [2022-07-21 08:59:56,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:56,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679245654] [2022-07-21 08:59:56,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:56,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:56,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:56,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:56,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679245654] [2022-07-21 08:59:56,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679245654] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:56,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:56,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:56,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018514838] [2022-07-21 08:59:56,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:56,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:56,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:56,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:56,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:56,826 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:56,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 207 transitions, 1666 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:56,827 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:56,827 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:56,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:58,077 INFO L129 PetriNetUnfolder]: 451/1849 cut-off events. [2022-07-21 08:59:58,077 INFO L130 PetriNetUnfolder]: For 17790/17794 co-relation queries the response was YES. [2022-07-21 08:59:58,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8455 conditions, 1849 events. 451/1849 cut-off events. For 17790/17794 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 13556 event pairs, 240 based on Foata normal form. 2/1750 useless extension candidates. Maximal degree in co-relation 8336. Up to 432 conditions per place. [2022-07-21 08:59:58,099 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 176 selfloop transitions, 44 changer transitions 52/357 dead transitions. [2022-07-21 08:59:58,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 357 transitions, 3850 flow [2022-07-21 08:59:58,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 08:59:58,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-21 08:59:58,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3287 transitions. [2022-07-21 08:59:58,101 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6093807934742306 [2022-07-21 08:59:58,101 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3287 transitions. [2022-07-21 08:59:58,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3287 transitions. [2022-07-21 08:59:58,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:58,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3287 transitions. [2022-07-21 08:59:58,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 106.03225806451613) internal successors, (3287), 31 states have internal predecessors, (3287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:58,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:58,106 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:58,106 INFO L186 Difference]: Start difference. First operand has 332 places, 207 transitions, 1666 flow. Second operand 31 states and 3287 transitions. [2022-07-21 08:59:58,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 357 transitions, 3850 flow [2022-07-21 08:59:58,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 357 transitions, 3382 flow, removed 226 selfloop flow, removed 28 redundant places. [2022-07-21 08:59:58,148 INFO L242 Difference]: Finished difference. Result has 335 places, 216 transitions, 1953 flow [2022-07-21 08:59:58,148 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1953, PETRI_PLACES=335, PETRI_TRANSITIONS=216} [2022-07-21 08:59:58,148 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 178 predicate places. [2022-07-21 08:59:58,148 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 216 transitions, 1953 flow [2022-07-21 08:59:58,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:58,149 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:58,149 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] [2022-07-21 08:59:58,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-07-21 08:59:58,149 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:58,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:58,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1287307459, now seen corresponding path program 24 times [2022-07-21 08:59:58,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:58,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66105279] [2022-07-21 08:59:58,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:58,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:58,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:58,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66105279] [2022-07-21 08:59:58,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66105279] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:58,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:58,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:58,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611826797] [2022-07-21 08:59:58,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:58,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:58,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:58,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:58,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:58,333 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:58,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 216 transitions, 1953 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:58,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:58,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:58,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:59,694 INFO L129 PetriNetUnfolder]: 452/1875 cut-off events. [2022-07-21 08:59:59,695 INFO L130 PetriNetUnfolder]: For 16948/16957 co-relation queries the response was YES. [2022-07-21 08:59:59,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8528 conditions, 1875 events. 452/1875 cut-off events. For 16948/16957 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 13872 event pairs, 227 based on Foata normal form. 3/1779 useless extension candidates. Maximal degree in co-relation 8408. Up to 432 conditions per place. [2022-07-21 08:59:59,717 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 183 selfloop transitions, 42 changer transitions 64/374 dead transitions. [2022-07-21 08:59:59,718 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 374 transitions, 4005 flow [2022-07-21 08:59:59,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-21 08:59:59,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-21 08:59:59,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3500 transitions. [2022-07-21 08:59:59,722 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6095437129919888 [2022-07-21 08:59:59,722 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3500 transitions. [2022-07-21 08:59:59,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3500 transitions. [2022-07-21 08:59:59,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:59,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3500 transitions. [2022-07-21 08:59:59,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 106.06060606060606) internal successors, (3500), 33 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:59,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:59,727 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:59,727 INFO L186 Difference]: Start difference. First operand has 335 places, 216 transitions, 1953 flow. Second operand 33 states and 3500 transitions. [2022-07-21 08:59:59,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 374 transitions, 4005 flow [2022-07-21 08:59:59,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 374 transitions, 3524 flow, removed 196 selfloop flow, removed 24 redundant places. [2022-07-21 08:59:59,774 INFO L242 Difference]: Finished difference. Result has 348 places, 215 transitions, 1905 flow [2022-07-21 08:59:59,774 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1905, PETRI_PLACES=348, PETRI_TRANSITIONS=215} [2022-07-21 08:59:59,774 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 191 predicate places. [2022-07-21 08:59:59,774 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 215 transitions, 1905 flow [2022-07-21 08:59:59,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:59,775 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:59,775 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] [2022-07-21 08:59:59,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-07-21 08:59:59,775 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:59,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:59,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1597305123, now seen corresponding path program 25 times [2022-07-21 08:59:59,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:59,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060162603] [2022-07-21 08:59:59,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:59,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:59,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:59,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:59,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060162603] [2022-07-21 08:59:59,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060162603] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:59,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:59,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:59:59,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259137875] [2022-07-21 08:59:59,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:59,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:59:59,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:59,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:59:59,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:59:59,955 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 08:59:59,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 215 transitions, 1905 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:59,956 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:59,956 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 08:59:59,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:01,193 INFO L129 PetriNetUnfolder]: 416/1694 cut-off events. [2022-07-21 09:00:01,193 INFO L130 PetriNetUnfolder]: For 14928/14939 co-relation queries the response was YES. [2022-07-21 09:00:01,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7688 conditions, 1694 events. 416/1694 cut-off events. For 14928/14939 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 11950 event pairs, 208 based on Foata normal form. 4/1614 useless extension candidates. Maximal degree in co-relation 7563. Up to 432 conditions per place. [2022-07-21 09:00:01,210 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 174 selfloop transitions, 38 changer transitions 61/358 dead transitions. [2022-07-21 09:00:01,211 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 358 transitions, 3717 flow [2022-07-21 09:00:01,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-21 09:00:01,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-21 09:00:01,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3390 transitions. [2022-07-21 09:00:01,213 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6088362068965517 [2022-07-21 09:00:01,213 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3390 transitions. [2022-07-21 09:00:01,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3390 transitions. [2022-07-21 09:00:01,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:01,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3390 transitions. [2022-07-21 09:00:01,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 105.9375) internal successors, (3390), 32 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:01,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:01,218 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:01,218 INFO L186 Difference]: Start difference. First operand has 348 places, 215 transitions, 1905 flow. Second operand 32 states and 3390 transitions. [2022-07-21 09:00:01,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 358 transitions, 3717 flow [2022-07-21 09:00:01,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 358 transitions, 3229 flow, removed 146 selfloop flow, removed 33 redundant places. [2022-07-21 09:00:01,256 INFO L242 Difference]: Finished difference. Result has 345 places, 210 transitions, 1703 flow [2022-07-21 09:00:01,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1703, PETRI_PLACES=345, PETRI_TRANSITIONS=210} [2022-07-21 09:00:01,256 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 188 predicate places. [2022-07-21 09:00:01,256 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 210 transitions, 1703 flow [2022-07-21 09:00:01,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:01,256 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:01,256 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] [2022-07-21 09:00:01,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-07-21 09:00:01,257 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:01,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:01,257 INFO L85 PathProgramCache]: Analyzing trace with hash 607871383, now seen corresponding path program 26 times [2022-07-21 09:00:01,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:01,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838228345] [2022-07-21 09:00:01,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:01,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:01,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:01,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:01,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838228345] [2022-07-21 09:00:01,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838228345] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:01,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:01,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 09:00:01,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241883268] [2022-07-21 09:00:01,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:01,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 09:00:01,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:01,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 09:00:01,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-21 09:00:01,433 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 09:00:01,433 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 210 transitions, 1703 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:01,433 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:01,433 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 09:00:01,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:02,419 INFO L129 PetriNetUnfolder]: 398/1604 cut-off events. [2022-07-21 09:00:02,419 INFO L130 PetriNetUnfolder]: For 12933/12938 co-relation queries the response was YES. [2022-07-21 09:00:02,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7169 conditions, 1604 events. 398/1604 cut-off events. For 12933/12938 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 11012 event pairs, 224 based on Foata normal form. 1/1516 useless extension candidates. Maximal degree in co-relation 7047. Up to 432 conditions per place. [2022-07-21 09:00:02,438 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 142 selfloop transitions, 55 changer transitions 33/315 dead transitions. [2022-07-21 09:00:02,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 315 transitions, 3388 flow [2022-07-21 09:00:02,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 09:00:02,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 09:00:02,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2548 transitions. [2022-07-21 09:00:02,440 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6101532567049809 [2022-07-21 09:00:02,440 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2548 transitions. [2022-07-21 09:00:02,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2548 transitions. [2022-07-21 09:00:02,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:02,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2548 transitions. [2022-07-21 09:00:02,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 106.16666666666667) internal successors, (2548), 24 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:02,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:02,444 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:02,444 INFO L186 Difference]: Start difference. First operand has 345 places, 210 transitions, 1703 flow. Second operand 24 states and 2548 transitions. [2022-07-21 09:00:02,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 315 transitions, 3388 flow [2022-07-21 09:00:02,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 315 transitions, 2979 flow, removed 93 selfloop flow, removed 35 redundant places. [2022-07-21 09:00:02,479 INFO L242 Difference]: Finished difference. Result has 326 places, 228 transitions, 2057 flow [2022-07-21 09:00:02,479 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2057, PETRI_PLACES=326, PETRI_TRANSITIONS=228} [2022-07-21 09:00:02,479 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 169 predicate places. [2022-07-21 09:00:02,479 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 228 transitions, 2057 flow [2022-07-21 09:00:02,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:02,479 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:02,479 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] [2022-07-21 09:00:02,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-07-21 09:00:02,480 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:02,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:02,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1143784635, now seen corresponding path program 27 times [2022-07-21 09:00:02,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:02,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873996884] [2022-07-21 09:00:02,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:02,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:02,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:02,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:02,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873996884] [2022-07-21 09:00:02,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873996884] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:02,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:02,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 09:00:02,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793761132] [2022-07-21 09:00:02,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:02,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 09:00:02,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:02,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 09:00:02,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-21 09:00:02,659 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 09:00:02,660 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 228 transitions, 2057 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:02,660 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:02,660 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 09:00:02,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:03,822 INFO L129 PetriNetUnfolder]: 403/1629 cut-off events. [2022-07-21 09:00:03,822 INFO L130 PetriNetUnfolder]: For 12445/12450 co-relation queries the response was YES. [2022-07-21 09:00:03,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7256 conditions, 1629 events. 403/1629 cut-off events. For 12445/12450 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11202 event pairs, 209 based on Foata normal form. 1/1545 useless extension candidates. Maximal degree in co-relation 7144. Up to 432 conditions per place. [2022-07-21 09:00:03,841 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 155 selfloop transitions, 50 changer transitions 48/338 dead transitions. [2022-07-21 09:00:03,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 338 transitions, 3597 flow [2022-07-21 09:00:03,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-21 09:00:03,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-21 09:00:03,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3164 transitions. [2022-07-21 09:00:03,843 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6061302681992338 [2022-07-21 09:00:03,843 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3164 transitions. [2022-07-21 09:00:03,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3164 transitions. [2022-07-21 09:00:03,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:03,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3164 transitions. [2022-07-21 09:00:03,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 105.46666666666667) internal successors, (3164), 30 states have internal predecessors, (3164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:03,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:03,848 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:03,848 INFO L186 Difference]: Start difference. First operand has 326 places, 228 transitions, 2057 flow. Second operand 30 states and 3164 transitions. [2022-07-21 09:00:03,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 338 transitions, 3597 flow [2022-07-21 09:00:03,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 338 transitions, 3072 flow, removed 211 selfloop flow, removed 16 redundant places. [2022-07-21 09:00:03,889 INFO L242 Difference]: Finished difference. Result has 349 places, 230 transitions, 1957 flow [2022-07-21 09:00:03,889 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1774, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1957, PETRI_PLACES=349, PETRI_TRANSITIONS=230} [2022-07-21 09:00:03,889 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 192 predicate places. [2022-07-21 09:00:03,890 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 230 transitions, 1957 flow [2022-07-21 09:00:03,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:03,890 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:03,890 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] [2022-07-21 09:00:03,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-07-21 09:00:03,890 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:03,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:03,891 INFO L85 PathProgramCache]: Analyzing trace with hash -376384443, now seen corresponding path program 28 times [2022-07-21 09:00:03,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:03,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657850855] [2022-07-21 09:00:03,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:03,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:04,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:04,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:04,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657850855] [2022-07-21 09:00:04,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657850855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:04,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:04,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 09:00:04,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851776908] [2022-07-21 09:00:04,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:04,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 09:00:04,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:04,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 09:00:04,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-21 09:00:04,071 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 09:00:04,072 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 230 transitions, 1957 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:04,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:04,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 09:00:04,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:05,100 INFO L129 PetriNetUnfolder]: 399/1597 cut-off events. [2022-07-21 09:00:05,101 INFO L130 PetriNetUnfolder]: For 12230/12234 co-relation queries the response was YES. [2022-07-21 09:00:05,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7098 conditions, 1597 events. 399/1597 cut-off events. For 12230/12234 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 10902 event pairs, 220 based on Foata normal form. 2/1511 useless extension candidates. Maximal degree in co-relation 6976. Up to 432 conditions per place. [2022-07-21 09:00:05,120 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 144 selfloop transitions, 55 changer transitions 37/321 dead transitions. [2022-07-21 09:00:05,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 321 transitions, 3195 flow [2022-07-21 09:00:05,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 09:00:05,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-21 09:00:05,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2751 transitions. [2022-07-21 09:00:05,122 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6080901856763926 [2022-07-21 09:00:05,122 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2751 transitions. [2022-07-21 09:00:05,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2751 transitions. [2022-07-21 09:00:05,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:05,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2751 transitions. [2022-07-21 09:00:05,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 105.8076923076923) internal successors, (2751), 26 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) [2022-07-21 09:00:05,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:05,126 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:05,126 INFO L186 Difference]: Start difference. First operand has 349 places, 230 transitions, 1957 flow. Second operand 26 states and 2751 transitions. [2022-07-21 09:00:05,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 321 transitions, 3195 flow [2022-07-21 09:00:05,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 321 transitions, 3003 flow, removed 57 selfloop flow, removed 24 redundant places. [2022-07-21 09:00:05,166 INFO L242 Difference]: Finished difference. Result has 343 places, 234 transitions, 2049 flow [2022-07-21 09:00:05,166 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1837, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2049, PETRI_PLACES=343, PETRI_TRANSITIONS=234} [2022-07-21 09:00:05,167 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 186 predicate places. [2022-07-21 09:00:05,167 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 234 transitions, 2049 flow [2022-07-21 09:00:05,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:05,167 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:05,167 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] [2022-07-21 09:00:05,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-07-21 09:00:05,167 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:05,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:05,168 INFO L85 PathProgramCache]: Analyzing trace with hash 991564081, now seen corresponding path program 29 times [2022-07-21 09:00:05,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:05,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620965086] [2022-07-21 09:00:05,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:05,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:05,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:05,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620965086] [2022-07-21 09:00:05,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620965086] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:05,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:05,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 09:00:05,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152190479] [2022-07-21 09:00:05,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:05,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 09:00:05,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:05,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 09:00:05,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-21 09:00:05,344 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 09:00:05,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 234 transitions, 2049 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:05,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:05,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 09:00:05,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:06,398 INFO L129 PetriNetUnfolder]: 386/1565 cut-off events. [2022-07-21 09:00:06,398 INFO L130 PetriNetUnfolder]: For 11749/11754 co-relation queries the response was YES. [2022-07-21 09:00:06,412 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6853 conditions, 1565 events. 386/1565 cut-off events. For 11749/11754 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 10624 event pairs, 214 based on Foata normal form. 1/1484 useless extension candidates. Maximal degree in co-relation 6736. Up to 432 conditions per place. [2022-07-21 09:00:06,416 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 145 selfloop transitions, 49 changer transitions 42/321 dead transitions. [2022-07-21 09:00:06,416 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 321 transitions, 3161 flow [2022-07-21 09:00:06,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 09:00:06,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-21 09:00:06,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2953 transitions. [2022-07-21 09:00:06,418 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6061165845648604 [2022-07-21 09:00:06,418 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2953 transitions. [2022-07-21 09:00:06,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2953 transitions. [2022-07-21 09:00:06,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:06,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2953 transitions. [2022-07-21 09:00:06,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 105.46428571428571) internal successors, (2953), 28 states have internal predecessors, (2953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:06,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:06,422 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:06,423 INFO L186 Difference]: Start difference. First operand has 343 places, 234 transitions, 2049 flow. Second operand 28 states and 2953 transitions. [2022-07-21 09:00:06,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 321 transitions, 3161 flow [2022-07-21 09:00:06,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 321 transitions, 2955 flow, removed 39 selfloop flow, removed 19 redundant places. [2022-07-21 09:00:06,466 INFO L242 Difference]: Finished difference. Result has 354 places, 231 transitions, 1960 flow [2022-07-21 09:00:06,466 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1900, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1960, PETRI_PLACES=354, PETRI_TRANSITIONS=231} [2022-07-21 09:00:06,466 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 197 predicate places. [2022-07-21 09:00:06,466 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 231 transitions, 1960 flow [2022-07-21 09:00:06,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:06,467 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:06,467 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] [2022-07-21 09:00:06,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-07-21 09:00:06,467 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:06,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:06,467 INFO L85 PathProgramCache]: Analyzing trace with hash -946938325, now seen corresponding path program 30 times [2022-07-21 09:00:06,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:06,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811990951] [2022-07-21 09:00:06,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:06,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:06,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:06,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811990951] [2022-07-21 09:00:06,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811990951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:06,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:06,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 09:00:06,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371854476] [2022-07-21 09:00:06,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:06,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 09:00:06,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:06,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 09:00:06,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-21 09:00:06,644 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 09:00:06,644 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 231 transitions, 1960 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:06,644 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:06,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 09:00:06,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:07,769 INFO L129 PetriNetUnfolder]: 365/1482 cut-off events. [2022-07-21 09:00:07,769 INFO L130 PetriNetUnfolder]: For 11189/11194 co-relation queries the response was YES. [2022-07-21 09:00:07,784 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6394 conditions, 1482 events. 365/1482 cut-off events. For 11189/11194 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 9775 event pairs, 196 based on Foata normal form. 1/1403 useless extension candidates. Maximal degree in co-relation 6271. Up to 432 conditions per place. [2022-07-21 09:00:07,788 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 127 selfloop transitions, 30 changer transitions 49/291 dead transitions. [2022-07-21 09:00:07,788 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 291 transitions, 2713 flow [2022-07-21 09:00:07,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 09:00:07,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-21 09:00:07,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2734 transitions. [2022-07-21 09:00:07,790 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6043324491600354 [2022-07-21 09:00:07,790 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2734 transitions. [2022-07-21 09:00:07,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2734 transitions. [2022-07-21 09:00:07,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:07,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2734 transitions. [2022-07-21 09:00:07,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 105.15384615384616) internal successors, (2734), 26 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:07,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:07,794 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:07,794 INFO L186 Difference]: Start difference. First operand has 354 places, 231 transitions, 1960 flow. Second operand 26 states and 2734 transitions. [2022-07-21 09:00:07,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 291 transitions, 2713 flow [2022-07-21 09:00:07,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 291 transitions, 2550 flow, removed 38 selfloop flow, removed 22 redundant places. [2022-07-21 09:00:07,836 INFO L242 Difference]: Finished difference. Result has 346 places, 201 transitions, 1501 flow [2022-07-21 09:00:07,836 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1825, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1501, PETRI_PLACES=346, PETRI_TRANSITIONS=201} [2022-07-21 09:00:07,836 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 189 predicate places. [2022-07-21 09:00:07,836 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 201 transitions, 1501 flow [2022-07-21 09:00:07,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:07,837 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:07,837 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] [2022-07-21 09:00:07,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-07-21 09:00:07,837 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:07,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:07,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1696444989, now seen corresponding path program 31 times [2022-07-21 09:00:07,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:07,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572821616] [2022-07-21 09:00:07,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:07,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:08,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:08,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:08,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572821616] [2022-07-21 09:00:08,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572821616] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:08,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:08,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 09:00:08,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697099403] [2022-07-21 09:00:08,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:08,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 09:00:08,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:08,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 09:00:08,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-21 09:00:08,019 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 09:00:08,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 201 transitions, 1501 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:08,020 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:08,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 09:00:08,020 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:09,286 INFO L129 PetriNetUnfolder]: 372/1480 cut-off events. [2022-07-21 09:00:09,287 INFO L130 PetriNetUnfolder]: For 11102/11109 co-relation queries the response was YES. [2022-07-21 09:00:09,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6433 conditions, 1480 events. 372/1480 cut-off events. For 11102/11109 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9859 event pairs, 189 based on Foata normal form. 2/1413 useless extension candidates. Maximal degree in co-relation 6319. Up to 432 conditions per place. [2022-07-21 09:00:09,305 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 170 selfloop transitions, 34 changer transitions 60/349 dead transitions. [2022-07-21 09:00:09,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 349 transitions, 3396 flow [2022-07-21 09:00:09,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-21 09:00:09,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-21 09:00:09,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3387 transitions. [2022-07-21 09:00:09,307 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6082974137931034 [2022-07-21 09:00:09,307 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3387 transitions. [2022-07-21 09:00:09,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3387 transitions. [2022-07-21 09:00:09,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:09,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3387 transitions. [2022-07-21 09:00:09,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 105.84375) internal successors, (3387), 32 states have internal predecessors, (3387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:09,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:09,313 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:09,313 INFO L186 Difference]: Start difference. First operand has 346 places, 201 transitions, 1501 flow. Second operand 32 states and 3387 transitions. [2022-07-21 09:00:09,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 349 transitions, 3396 flow [2022-07-21 09:00:09,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 349 transitions, 2992 flow, removed 119 selfloop flow, removed 25 redundant places. [2022-07-21 09:00:09,344 INFO L242 Difference]: Finished difference. Result has 333 places, 202 transitions, 1496 flow [2022-07-21 09:00:09,344 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1496, PETRI_PLACES=333, PETRI_TRANSITIONS=202} [2022-07-21 09:00:09,344 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 176 predicate places. [2022-07-21 09:00:09,344 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 202 transitions, 1496 flow [2022-07-21 09:00:09,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:09,344 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:09,345 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] [2022-07-21 09:00:09,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-07-21 09:00:09,345 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:09,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:09,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1127173249, now seen corresponding path program 32 times [2022-07-21 09:00:09,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:09,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375513885] [2022-07-21 09:00:09,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:09,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:09,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:09,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:09,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375513885] [2022-07-21 09:00:09,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375513885] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:09,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:09,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 09:00:09,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365917131] [2022-07-21 09:00:09,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:09,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 09:00:09,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:09,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 09:00:09,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-21 09:00:09,526 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-21 09:00:09,527 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 202 transitions, 1496 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:09,527 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:09,527 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-21 09:00:09,527 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:10,512 INFO L129 PetriNetUnfolder]: 360/1428 cut-off events. [2022-07-21 09:00:10,512 INFO L130 PetriNetUnfolder]: For 10483/10489 co-relation queries the response was YES. [2022-07-21 09:00:10,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6188 conditions, 1428 events. 360/1428 cut-off events. For 10483/10489 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9325 event pairs, 199 based on Foata normal form. 1/1348 useless extension candidates. Maximal degree in co-relation 6068. Up to 432 conditions per place. [2022-07-21 09:00:10,531 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 137 selfloop transitions, 52 changer transitions 33/307 dead transitions. [2022-07-21 09:00:10,532 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 307 transitions, 3202 flow [2022-07-21 09:00:10,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 09:00:10,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 09:00:10,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2546 transitions. [2022-07-21 09:00:10,534 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6096743295019157 [2022-07-21 09:00:10,534 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2546 transitions. [2022-07-21 09:00:10,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2546 transitions. [2022-07-21 09:00:10,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:10,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2546 transitions. [2022-07-21 09:00:10,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 106.08333333333333) internal successors, (2546), 24 states have internal predecessors, (2546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:10,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:10,538 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:10,538 INFO L186 Difference]: Start difference. First operand has 333 places, 202 transitions, 1496 flow. Second operand 24 states and 2546 transitions. [2022-07-21 09:00:10,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 307 transitions, 3202 flow [2022-07-21 09:00:10,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 307 transitions, 2737 flow, removed 133 selfloop flow, removed 31 redundant places. [2022-07-21 09:00:10,569 INFO L242 Difference]: Finished difference. Result has 319 places, 222 transitions, 1841 flow [2022-07-21 09:00:10,569 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1305, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1841, PETRI_PLACES=319, PETRI_TRANSITIONS=222} [2022-07-21 09:00:10,569 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 162 predicate places. [2022-07-21 09:00:10,569 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 222 transitions, 1841 flow [2022-07-21 09:00:10,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:10,570 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:10,570 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] [2022-07-21 09:00:10,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-07-21 09:00:10,570 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:10,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:10,570 INFO L85 PathProgramCache]: Analyzing trace with hash -755832695, now seen corresponding path program 33 times [2022-07-21 09:00:10,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:10,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072655658] [2022-07-21 09:00:10,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:10,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:10,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:10,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:10,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072655658] [2022-07-21 09:00:10,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072655658] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:10,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:10,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:00:10,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388842156] [2022-07-21 09:00:10,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:10,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:00:10,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:10,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:00:10,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:00:10,608 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-07-21 09:00:10,608 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 222 transitions, 1841 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:10,608 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:10,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-07-21 09:00:10,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:10,709 INFO L129 PetriNetUnfolder]: 43/494 cut-off events. [2022-07-21 09:00:10,709 INFO L130 PetriNetUnfolder]: For 1334/1334 co-relation queries the response was YES. [2022-07-21 09:00:10,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1318 conditions, 494 events. 43/494 cut-off events. For 1334/1334 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2088 event pairs, 26 based on Foata normal form. 1/471 useless extension candidates. Maximal degree in co-relation 1206. Up to 57 conditions per place. [2022-07-21 09:00:10,713 INFO L132 encePairwiseOnDemand]: 168/174 looper letters, 28 selfloop transitions, 5 changer transitions 1/153 dead transitions. [2022-07-21 09:00:10,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 153 transitions, 639 flow [2022-07-21 09:00:10,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:00:10,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 09:00:10,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 731 transitions. [2022-07-21 09:00:10,714 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8402298850574713 [2022-07-21 09:00:10,714 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 731 transitions. [2022-07-21 09:00:10,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 731 transitions. [2022-07-21 09:00:10,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:10,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 731 transitions. [2022-07-21 09:00:10,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:10,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:10,715 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:10,715 INFO L186 Difference]: Start difference. First operand has 319 places, 222 transitions, 1841 flow. Second operand 5 states and 731 transitions. [2022-07-21 09:00:10,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 153 transitions, 639 flow [2022-07-21 09:00:10,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 153 transitions, 541 flow, removed 34 selfloop flow, removed 33 redundant places. [2022-07-21 09:00:10,721 INFO L242 Difference]: Finished difference. Result has 237 places, 147 transitions, 450 flow [2022-07-21 09:00:10,721 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=450, PETRI_PLACES=237, PETRI_TRANSITIONS=147} [2022-07-21 09:00:10,721 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 80 predicate places. [2022-07-21 09:00:10,721 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 147 transitions, 450 flow [2022-07-21 09:00:10,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:10,721 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:10,721 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:10,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-07-21 09:00:10,722 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:10,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:10,722 INFO L85 PathProgramCache]: Analyzing trace with hash 664491577, now seen corresponding path program 1 times [2022-07-21 09:00:10,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:10,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654461628] [2022-07-21 09:00:10,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:10,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:11,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:11,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:11,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654461628] [2022-07-21 09:00:11,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654461628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:11,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:11,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-21 09:00:11,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485946768] [2022-07-21 09:00:11,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:11,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-21 09:00:11,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:11,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-21 09:00:11,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-07-21 09:00:11,256 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-21 09:00:11,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 147 transitions, 450 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:11,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:11,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-21 09:00:11,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:20,508 INFO L129 PetriNetUnfolder]: 586/1832 cut-off events. [2022-07-21 09:00:20,508 INFO L130 PetriNetUnfolder]: For 2595/2595 co-relation queries the response was YES. [2022-07-21 09:00:20,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4627 conditions, 1832 events. 586/1832 cut-off events. For 2595/2595 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 10950 event pairs, 0 based on Foata normal form. 1/1807 useless extension candidates. Maximal degree in co-relation 4544. Up to 135 conditions per place. [2022-07-21 09:00:20,524 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 342 selfloop transitions, 20 changer transitions 183/616 dead transitions. [2022-07-21 09:00:20,524 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 616 transitions, 3610 flow [2022-07-21 09:00:20,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-07-21 09:00:20,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2022-07-21 09:00:20,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 7849 transitions. [2022-07-21 09:00:20,530 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5126044932079414 [2022-07-21 09:00:20,530 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 7849 transitions. [2022-07-21 09:00:20,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 7849 transitions. [2022-07-21 09:00:20,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:20,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 7849 transitions. [2022-07-21 09:00:20,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 89.19318181818181) internal successors, (7849), 88 states have internal predecessors, (7849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:20,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:20,549 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:20,549 INFO L186 Difference]: Start difference. First operand has 237 places, 147 transitions, 450 flow. Second operand 88 states and 7849 transitions. [2022-07-21 09:00:20,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 616 transitions, 3610 flow [2022-07-21 09:00:20,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 616 transitions, 3596 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-21 09:00:20,558 INFO L242 Difference]: Finished difference. Result has 387 places, 147 transitions, 627 flow [2022-07-21 09:00:20,558 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=627, PETRI_PLACES=387, PETRI_TRANSITIONS=147} [2022-07-21 09:00:20,558 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 230 predicate places. [2022-07-21 09:00:20,558 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 147 transitions, 627 flow [2022-07-21 09:00:20,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:20,558 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:20,559 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:20,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-07-21 09:00:20,559 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:20,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:20,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1559279357, now seen corresponding path program 2 times [2022-07-21 09:00:20,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:20,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078013636] [2022-07-21 09:00:20,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:20,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:21,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:21,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078013636] [2022-07-21 09:00:21,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078013636] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:21,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:21,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-21 09:00:21,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018869359] [2022-07-21 09:00:21,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:21,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-21 09:00:21,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:21,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-21 09:00:21,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2022-07-21 09:00:21,112 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-21 09:00:21,113 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 147 transitions, 627 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,113 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:21,113 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-21 09:00:21,113 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:33,663 INFO L129 PetriNetUnfolder]: 889/2794 cut-off events. [2022-07-21 09:00:33,663 INFO L130 PetriNetUnfolder]: For 16705/16705 co-relation queries the response was YES. [2022-07-21 09:00:33,690 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10741 conditions, 2794 events. 889/2794 cut-off events. For 16705/16705 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 19428 event pairs, 50 based on Foata normal form. 1/2736 useless extension candidates. Maximal degree in co-relation 10587. Up to 895 conditions per place. [2022-07-21 09:00:33,697 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 361 selfloop transitions, 20 changer transitions 160/612 dead transitions. [2022-07-21 09:00:33,697 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 612 transitions, 4972 flow [2022-07-21 09:00:33,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-07-21 09:00:33,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2022-07-21 09:00:33,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 7845 transitions. [2022-07-21 09:00:33,701 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5123432601880877 [2022-07-21 09:00:33,701 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 7845 transitions. [2022-07-21 09:00:33,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 7845 transitions. [2022-07-21 09:00:33,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:33,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 7845 transitions. [2022-07-21 09:00:33,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 89.14772727272727) internal successors, (7845), 88 states have internal predecessors, (7845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:33,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:33,715 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:33,715 INFO L186 Difference]: Start difference. First operand has 387 places, 147 transitions, 627 flow. Second operand 88 states and 7845 transitions. [2022-07-21 09:00:33,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 612 transitions, 4972 flow [2022-07-21 09:00:33,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 612 transitions, 3579 flow, removed 457 selfloop flow, removed 82 redundant places. [2022-07-21 09:00:33,749 INFO L242 Difference]: Finished difference. Result has 406 places, 160 transitions, 863 flow [2022-07-21 09:00:33,749 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=863, PETRI_PLACES=406, PETRI_TRANSITIONS=160} [2022-07-21 09:00:33,749 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 249 predicate places. [2022-07-21 09:00:33,749 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 160 transitions, 863 flow [2022-07-21 09:00:33,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:33,750 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:33,750 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:33,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-07-21 09:00:33,750 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:33,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:33,750 INFO L85 PathProgramCache]: Analyzing trace with hash -918801979, now seen corresponding path program 3 times [2022-07-21 09:00:33,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:33,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074307947] [2022-07-21 09:00:33,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:33,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:34,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:34,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:34,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074307947] [2022-07-21 09:00:34,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074307947] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:34,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:34,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-21 09:00:34,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009568495] [2022-07-21 09:00:34,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:34,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-21 09:00:34,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:34,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-21 09:00:34,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2022-07-21 09:00:34,261 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-21 09:00:34,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 160 transitions, 863 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:34,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:34,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-21 09:00:34,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:44,481 INFO L129 PetriNetUnfolder]: 983/3177 cut-off events. [2022-07-21 09:00:44,481 INFO L130 PetriNetUnfolder]: For 34130/34130 co-relation queries the response was YES. [2022-07-21 09:00:44,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14062 conditions, 3177 events. 983/3177 cut-off events. For 34130/34130 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 23224 event pairs, 44 based on Foata normal form. 1/3142 useless extension candidates. Maximal degree in co-relation 13890. Up to 262 conditions per place. [2022-07-21 09:00:44,519 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 461 selfloop transitions, 25 changer transitions 158/715 dead transitions. [2022-07-21 09:00:44,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 715 transitions, 7419 flow [2022-07-21 09:00:44,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-21 09:00:44,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-07-21 09:00:44,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7508 transitions. [2022-07-21 09:00:44,524 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5136836343732896 [2022-07-21 09:00:44,524 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7508 transitions. [2022-07-21 09:00:44,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7508 transitions. [2022-07-21 09:00:44,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:44,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7508 transitions. [2022-07-21 09:00:44,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.38095238095238) internal successors, (7508), 84 states have internal predecessors, (7508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:44,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:44,537 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:44,537 INFO L186 Difference]: Start difference. First operand has 406 places, 160 transitions, 863 flow. Second operand 84 states and 7508 transitions. [2022-07-21 09:00:44,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 715 transitions, 7419 flow [2022-07-21 09:00:44,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 715 transitions, 6780 flow, removed 314 selfloop flow, removed 34 redundant places. [2022-07-21 09:00:44,638 INFO L242 Difference]: Finished difference. Result has 453 places, 166 transitions, 1060 flow [2022-07-21 09:00:44,639 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1060, PETRI_PLACES=453, PETRI_TRANSITIONS=166} [2022-07-21 09:00:44,639 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 296 predicate places. [2022-07-21 09:00:44,639 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 166 transitions, 1060 flow [2022-07-21 09:00:44,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:44,639 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:44,639 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:44,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-07-21 09:00:44,640 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:44,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:44,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1258355779, now seen corresponding path program 4 times [2022-07-21 09:00:44,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:44,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318516348] [2022-07-21 09:00:44,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:44,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:45,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:45,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:45,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318516348] [2022-07-21 09:00:45,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318516348] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:45,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:45,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-21 09:00:45,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224209967] [2022-07-21 09:00:45,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:45,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-21 09:00:45,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:45,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-21 09:00:45,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2022-07-21 09:00:45,135 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-21 09:00:45,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 166 transitions, 1060 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:45,136 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:45,136 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-21 09:00:45,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:56,346 INFO L129 PetriNetUnfolder]: 1272/4038 cut-off events. [2022-07-21 09:00:56,346 INFO L130 PetriNetUnfolder]: For 44588/44588 co-relation queries the response was YES. [2022-07-21 09:00:56,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19927 conditions, 4038 events. 1272/4038 cut-off events. For 44588/44588 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 31570 event pairs, 116 based on Foata normal form. 1/3957 useless extension candidates. Maximal degree in co-relation 19718. Up to 1520 conditions per place. [2022-07-21 09:00:56,414 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 430 selfloop transitions, 22 changer transitions 156/679 dead transitions. [2022-07-21 09:00:56,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 679 transitions, 8464 flow [2022-07-21 09:00:56,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-21 09:00:56,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-07-21 09:00:56,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7490 transitions. [2022-07-21 09:00:56,512 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5124521072796935 [2022-07-21 09:00:56,512 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7490 transitions. [2022-07-21 09:00:56,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7490 transitions. [2022-07-21 09:00:56,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:56,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7490 transitions. [2022-07-21 09:00:56,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.16666666666667) internal successors, (7490), 84 states have internal predecessors, (7490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:56,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:56,525 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:56,525 INFO L186 Difference]: Start difference. First operand has 453 places, 166 transitions, 1060 flow. Second operand 84 states and 7490 transitions. [2022-07-21 09:00:56,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 679 transitions, 8464 flow [2022-07-21 09:00:56,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 679 transitions, 7142 flow, removed 582 selfloop flow, removed 69 redundant places. [2022-07-21 09:00:56,661 INFO L242 Difference]: Finished difference. Result has 481 places, 179 transitions, 1339 flow [2022-07-21 09:00:56,661 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1339, PETRI_PLACES=481, PETRI_TRANSITIONS=179} [2022-07-21 09:00:56,661 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 324 predicate places. [2022-07-21 09:00:56,661 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 179 transitions, 1339 flow [2022-07-21 09:00:56,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:56,662 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:56,662 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:56,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-07-21 09:00:56,662 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:56,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:56,662 INFO L85 PathProgramCache]: Analyzing trace with hash -248690663, now seen corresponding path program 5 times [2022-07-21 09:00:56,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:56,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138732399] [2022-07-21 09:00:56,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:56,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:57,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:57,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:57,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138732399] [2022-07-21 09:00:57,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138732399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:57,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:57,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-21 09:00:57,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290602203] [2022-07-21 09:00:57,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:57,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-21 09:00:57,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:57,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-21 09:00:57,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-07-21 09:00:57,206 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-21 09:00:57,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 179 transitions, 1339 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:57,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:57,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-21 09:00:57,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:01:08,774 INFO L129 PetriNetUnfolder]: 1263/4070 cut-off events. [2022-07-21 09:01:08,774 INFO L130 PetriNetUnfolder]: For 74887/74887 co-relation queries the response was YES. [2022-07-21 09:01:08,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22745 conditions, 4070 events. 1263/4070 cut-off events. For 74887/74887 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 32119 event pairs, 106 based on Foata normal form. 1/3960 useless extension candidates. Maximal degree in co-relation 22518. Up to 895 conditions per place. [2022-07-21 09:01:08,843 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 321 selfloop transitions, 58 changer transitions 51/501 dead transitions. [2022-07-21 09:01:08,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 501 transitions, 7259 flow [2022-07-21 09:01:08,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-21 09:01:08,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-07-21 09:01:08,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 3696 transitions. [2022-07-21 09:01:08,846 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5310344827586206 [2022-07-21 09:01:08,846 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 3696 transitions. [2022-07-21 09:01:08,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 3696 transitions. [2022-07-21 09:01:08,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:01:08,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 3696 transitions. [2022-07-21 09:01:08,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 92.4) internal successors, (3696), 40 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) [2022-07-21 09:01:08,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 174.0) internal successors, (7134), 41 states have internal predecessors, (7134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:08,852 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 174.0) internal successors, (7134), 41 states have internal predecessors, (7134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:08,852 INFO L186 Difference]: Start difference. First operand has 481 places, 179 transitions, 1339 flow. Second operand 40 states and 3696 transitions. [2022-07-21 09:01:08,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 501 transitions, 7259 flow [2022-07-21 09:01:09,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 501 transitions, 6504 flow, removed 366 selfloop flow, removed 34 redundant places. [2022-07-21 09:01:09,076 INFO L242 Difference]: Finished difference. Result has 445 places, 205 transitions, 2105 flow [2022-07-21 09:01:09,076 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2105, PETRI_PLACES=445, PETRI_TRANSITIONS=205} [2022-07-21 09:01:09,076 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 288 predicate places. [2022-07-21 09:01:09,076 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 205 transitions, 2105 flow [2022-07-21 09:01:09,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:09,076 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:01:09,076 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:01:09,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-07-21 09:01:09,077 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:01:09,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:01:09,077 INFO L85 PathProgramCache]: Analyzing trace with hash -719380667, now seen corresponding path program 6 times [2022-07-21 09:01:09,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:01:09,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422184657] [2022-07-21 09:01:09,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:01:09,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:01:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:01:09,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:01:09,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:01:09,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422184657] [2022-07-21 09:01:09,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422184657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:01:09,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:01:09,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-21 09:01:09,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035539446] [2022-07-21 09:01:09,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:01:09,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-21 09:01:09,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:01:09,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-21 09:01:09,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2022-07-21 09:01:09,557 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-21 09:01:09,557 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 205 transitions, 2105 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:09,557 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:01:09,558 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-21 09:01:09,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:01:20,375 INFO L129 PetriNetUnfolder]: 1425/4615 cut-off events. [2022-07-21 09:01:20,375 INFO L130 PetriNetUnfolder]: For 79565/79565 co-relation queries the response was YES. [2022-07-21 09:01:20,437 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26174 conditions, 4615 events. 1425/4615 cut-off events. For 79565/79565 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 37459 event pairs, 110 based on Foata normal form. 1/4557 useless extension candidates. Maximal degree in co-relation 25953. Up to 471 conditions per place. [2022-07-21 09:01:20,452 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 543 selfloop transitions, 38 changer transitions 163/815 dead transitions. [2022-07-21 09:01:20,452 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 815 transitions, 11723 flow [2022-07-21 09:01:20,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-21 09:01:20,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-07-21 09:01:20,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7507 transitions. [2022-07-21 09:01:20,456 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5136152162014231 [2022-07-21 09:01:20,456 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7507 transitions. [2022-07-21 09:01:20,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7507 transitions. [2022-07-21 09:01:20,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:01:20,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7507 transitions. [2022-07-21 09:01:20,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.36904761904762) internal successors, (7507), 84 states have internal predecessors, (7507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:20,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:20,468 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:20,469 INFO L186 Difference]: Start difference. First operand has 445 places, 205 transitions, 2105 flow. Second operand 84 states and 7507 transitions. [2022-07-21 09:01:20,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 815 transitions, 11723 flow [2022-07-21 09:01:20,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 815 transitions, 10492 flow, removed 328 selfloop flow, removed 21 redundant places. [2022-07-21 09:01:20,808 INFO L242 Difference]: Finished difference. Result has 563 places, 212 transitions, 1922 flow [2022-07-21 09:01:20,808 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1922, PETRI_PLACES=563, PETRI_TRANSITIONS=212} [2022-07-21 09:01:20,820 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 406 predicate places. [2022-07-21 09:01:20,820 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 212 transitions, 1922 flow [2022-07-21 09:01:20,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:20,820 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:01:20,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:01:20,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-07-21 09:01:20,820 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:01:20,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:01:20,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1821997415, now seen corresponding path program 7 times [2022-07-21 09:01:20,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:01:20,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310783732] [2022-07-21 09:01:20,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:01:20,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:01:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:01:21,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:01:21,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:01:21,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310783732] [2022-07-21 09:01:21,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310783732] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:01:21,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:01:21,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-21 09:01:21,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198643948] [2022-07-21 09:01:21,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:01:21,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-21 09:01:21,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:01:21,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-21 09:01:21,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-07-21 09:01:21,322 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-21 09:01:21,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 212 transitions, 1922 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:21,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:01:21,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-21 09:01:21,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:01:34,028 INFO L129 PetriNetUnfolder]: 1821/5775 cut-off events. [2022-07-21 09:01:34,028 INFO L130 PetriNetUnfolder]: For 147606/147610 co-relation queries the response was YES. [2022-07-21 09:01:34,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38056 conditions, 5775 events. 1821/5775 cut-off events. For 147606/147610 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 50044 event pairs, 275 based on Foata normal form. 1/5633 useless extension candidates. Maximal degree in co-relation 37775. Up to 1517 conditions per place. [2022-07-21 09:01:34,142 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 460 selfloop transitions, 27 changer transitions 156/714 dead transitions. [2022-07-21 09:01:34,143 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 714 transitions, 12026 flow [2022-07-21 09:01:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-21 09:01:34,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-07-21 09:01:34,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7541 transitions. [2022-07-21 09:01:34,147 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5159414340448824 [2022-07-21 09:01:34,147 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7541 transitions. [2022-07-21 09:01:34,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7541 transitions. [2022-07-21 09:01:34,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:01:34,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7541 transitions. [2022-07-21 09:01:34,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.77380952380952) internal successors, (7541), 84 states have internal predecessors, (7541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:34,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:34,159 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:34,159 INFO L186 Difference]: Start difference. First operand has 563 places, 212 transitions, 1922 flow. Second operand 84 states and 7541 transitions. [2022-07-21 09:01:34,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 714 transitions, 12026 flow [2022-07-21 09:01:34,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 714 transitions, 11169 flow, removed 336 selfloop flow, removed 65 redundant places. [2022-07-21 09:01:34,783 INFO L242 Difference]: Finished difference. Result has 593 places, 223 transitions, 2219 flow [2022-07-21 09:01:34,783 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2219, PETRI_PLACES=593, PETRI_TRANSITIONS=223} [2022-07-21 09:01:34,784 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 436 predicate places. [2022-07-21 09:01:34,784 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 223 transitions, 2219 flow [2022-07-21 09:01:34,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:34,784 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:01:34,784 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:01:34,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-07-21 09:01:34,784 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:01:34,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:01:34,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1707406083, now seen corresponding path program 8 times [2022-07-21 09:01:34,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:01:34,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831431996] [2022-07-21 09:01:34,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:01:34,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:01:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:01:35,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:01:35,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:01:35,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831431996] [2022-07-21 09:01:35,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831431996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:01:35,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:01:35,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-21 09:01:35,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823644537] [2022-07-21 09:01:35,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:01:35,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-21 09:01:35,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:01:35,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-21 09:01:35,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2022-07-21 09:01:35,291 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-21 09:01:35,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 223 transitions, 2219 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:35,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:01:35,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-21 09:01:35,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:01:45,160 INFO L129 PetriNetUnfolder]: 1961/6274 cut-off events. [2022-07-21 09:01:45,160 INFO L130 PetriNetUnfolder]: For 243987/243991 co-relation queries the response was YES. [2022-07-21 09:01:45,270 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46125 conditions, 6274 events. 1961/6274 cut-off events. For 243987/243991 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 55137 event pairs, 269 based on Foata normal form. 1/6190 useless extension candidates. Maximal degree in co-relation 45824. Up to 993 conditions per place. [2022-07-21 09:01:45,291 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 578 selfloop transitions, 38 changer transitions 168/855 dead transitions. [2022-07-21 09:01:45,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 855 transitions, 14009 flow [2022-07-21 09:01:45,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-21 09:01:45,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-07-21 09:01:45,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7505 transitions. [2022-07-21 09:01:45,296 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5134783798576902 [2022-07-21 09:01:45,296 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7505 transitions. [2022-07-21 09:01:45,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7505 transitions. [2022-07-21 09:01:45,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:01:45,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7505 transitions. [2022-07-21 09:01:45,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.3452380952381) internal successors, (7505), 84 states have internal predecessors, (7505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:45,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:45,307 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:45,307 INFO L186 Difference]: Start difference. First operand has 593 places, 223 transitions, 2219 flow. Second operand 84 states and 7505 transitions. [2022-07-21 09:01:45,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 855 transitions, 14009 flow [2022-07-21 09:01:46,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 855 transitions, 12423 flow, removed 749 selfloop flow, removed 70 redundant places. [2022-07-21 09:01:46,286 INFO L242 Difference]: Finished difference. Result has 613 places, 231 transitions, 2461 flow [2022-07-21 09:01:46,286 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1958, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2461, PETRI_PLACES=613, PETRI_TRANSITIONS=231} [2022-07-21 09:01:46,286 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 456 predicate places. [2022-07-21 09:01:46,286 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 231 transitions, 2461 flow [2022-07-21 09:01:46,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:46,287 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:01:46,287 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:01:46,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-07-21 09:01:46,287 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:01:46,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:01:46,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2056909789, now seen corresponding path program 9 times [2022-07-21 09:01:46,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:01:46,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185989859] [2022-07-21 09:01:46,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:01:46,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:01:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:01:46,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:01:46,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:01:46,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185989859] [2022-07-21 09:01:46,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185989859] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:01:46,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:01:46,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-21 09:01:46,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966809195] [2022-07-21 09:01:46,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:01:46,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-21 09:01:46,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:01:46,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-21 09:01:46,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2022-07-21 09:01:46,819 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-21 09:01:46,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 231 transitions, 2461 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:46,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:01:46,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-21 09:01:46,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:01:57,295 INFO L129 PetriNetUnfolder]: 2196/7052 cut-off events. [2022-07-21 09:01:57,295 INFO L130 PetriNetUnfolder]: For 245128/245140 co-relation queries the response was YES. [2022-07-21 09:01:57,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50787 conditions, 7052 events. 2196/7052 cut-off events. For 245128/245140 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 63852 event pairs, 701 based on Foata normal form. 3/6862 useless extension candidates. Maximal degree in co-relation 50479. Up to 1872 conditions per place. [2022-07-21 09:01:57,463 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 470 selfloop transitions, 28 changer transitions 161/730 dead transitions. [2022-07-21 09:01:57,463 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 730 transitions, 13762 flow [2022-07-21 09:01:57,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-21 09:01:57,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-07-21 09:01:57,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7543 transitions. [2022-07-21 09:01:57,467 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5160782703886152 [2022-07-21 09:01:57,467 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7543 transitions. [2022-07-21 09:01:57,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7543 transitions. [2022-07-21 09:01:57,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:01:57,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7543 transitions. [2022-07-21 09:01:57,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.79761904761905) internal successors, (7543), 84 states have internal predecessors, (7543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:57,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:57,480 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:57,480 INFO L186 Difference]: Start difference. First operand has 613 places, 231 transitions, 2461 flow. Second operand 84 states and 7543 transitions. [2022-07-21 09:01:57,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 730 transitions, 13762 flow [2022-07-21 09:01:58,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 730 transitions, 12454 flow, removed 561 selfloop flow, removed 66 redundant places. [2022-07-21 09:01:58,549 INFO L242 Difference]: Finished difference. Result has 643 places, 243 transitions, 2749 flow [2022-07-21 09:01:58,550 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2169, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2749, PETRI_PLACES=643, PETRI_TRANSITIONS=243} [2022-07-21 09:01:58,550 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 486 predicate places. [2022-07-21 09:01:58,550 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 243 transitions, 2749 flow [2022-07-21 09:01:58,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:58,551 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:01:58,551 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:01:58,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-07-21 09:01:58,551 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:01:58,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:01:58,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1243536633, now seen corresponding path program 10 times [2022-07-21 09:01:58,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:01:58,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858318126] [2022-07-21 09:01:58,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:01:58,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:01:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:01:59,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:01:59,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:01:59,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858318126] [2022-07-21 09:01:59,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858318126] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:01:59,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:01:59,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-21 09:01:59,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14941309] [2022-07-21 09:01:59,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:01:59,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-21 09:01:59,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:01:59,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-21 09:01:59,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2022-07-21 09:01:59,045 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-21 09:01:59,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 243 transitions, 2749 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:59,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:01:59,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-21 09:01:59,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:02:12,083 INFO L129 PetriNetUnfolder]: 2370/7588 cut-off events. [2022-07-21 09:02:12,084 INFO L130 PetriNetUnfolder]: For 332609/332613 co-relation queries the response was YES. [2022-07-21 09:02:12,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58557 conditions, 7588 events. 2370/7588 cut-off events. For 332609/332613 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 70195 event pairs, 423 based on Foata normal form. 1/7481 useless extension candidates. Maximal degree in co-relation 58229. Up to 1751 conditions per place. [2022-07-21 09:02:12,260 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 602 selfloop transitions, 36 changer transitions 173/882 dead transitions. [2022-07-21 09:02:12,260 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 882 transitions, 15503 flow [2022-07-21 09:02:12,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-21 09:02:12,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-07-21 09:02:12,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7504 transitions. [2022-07-21 09:02:12,264 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5134099616858238 [2022-07-21 09:02:12,264 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7504 transitions. [2022-07-21 09:02:12,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7504 transitions. [2022-07-21 09:02:12,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:02:12,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7504 transitions. [2022-07-21 09:02:12,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.33333333333333) internal successors, (7504), 84 states have internal predecessors, (7504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:02:12,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:02:12,276 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:02:12,276 INFO L186 Difference]: Start difference. First operand has 643 places, 243 transitions, 2749 flow. Second operand 84 states and 7504 transitions. [2022-07-21 09:02:12,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 882 transitions, 15503 flow [2022-07-21 09:02:13,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 882 transitions, 13951 flow, removed 750 selfloop flow, removed 70 redundant places. [2022-07-21 09:02:13,900 INFO L242 Difference]: Finished difference. Result has 665 places, 252 transitions, 3046 flow [2022-07-21 09:02:13,900 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2461, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=3046, PETRI_PLACES=665, PETRI_TRANSITIONS=252} [2022-07-21 09:02:13,900 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 508 predicate places. [2022-07-21 09:02:13,900 INFO L495 AbstractCegarLoop]: Abstraction has has 665 places, 252 transitions, 3046 flow [2022-07-21 09:02:13,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:02:13,901 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:02:13,901 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:02:13,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-07-21 09:02:13,901 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:02:13,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:02:13,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1234404879, now seen corresponding path program 11 times [2022-07-21 09:02:13,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:02:13,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279750735] [2022-07-21 09:02:13,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:02:13,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:02:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:02:14,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:02:14,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:02:14,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279750735] [2022-07-21 09:02:14,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279750735] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:02:14,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:02:14,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-21 09:02:14,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355417430] [2022-07-21 09:02:14,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:02:14,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-21 09:02:14,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:02:14,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-21 09:02:14,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2022-07-21 09:02:14,411 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-21 09:02:14,412 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 665 places, 252 transitions, 3046 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:02:14,412 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:02:14,413 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-21 09:02:14,413 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand