./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-node-subst.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-node-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:59:05,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:59:05,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:59:05,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:59:05,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:59:05,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:59:05,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:59:05,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:59:05,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:59:05,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:59:05,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:59:05,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:59:05,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:59:05,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:59:05,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:59:05,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:59:05,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:59:05,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:59:05,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:59:05,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:59:05,334 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:59:05,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:59:05,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:59:05,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:59:05,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:59:05,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:59:05,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:59:05,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:59:05,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:59:05,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:59:05,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:59:05,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:59:05,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:59:05,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:59:05,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:59:05,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:59:05,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:59:05,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:59:05,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:59:05,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:59:05,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:59:05,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:59:05,364 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:59:05,395 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:59:05,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:59:05,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:59:05,396 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:59:05,397 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:59:05,397 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:59:05,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:59:05,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:59:05,398 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:59:05,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:59:05,399 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:59:05,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:59:05,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:59:05,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:59:05,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:59:05,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:59:05,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:59:05,401 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:59:05,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:59:05,401 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:59:05,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:59:05,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:59:05,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:59:05,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:59:05,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:59:05,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:59:05,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:59:05,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:59:05,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:59:05,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:59:05,404 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:59:05,404 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:59:05,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:59:05,404 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2022-07-21 08:59:05,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:59:05,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:59:05,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:59:05,782 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:59:05,783 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:59:05,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-07-21 08:59:05,849 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/676e220b4/a948e0c29bb44c9c954c239e54e30df7/FLAGc161d7de7 [2022-07-21 08:59:06,300 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:59:06,301 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-07-21 08:59:06,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/676e220b4/a948e0c29bb44c9c954c239e54e30df7/FLAGc161d7de7 [2022-07-21 08:59:06,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/676e220b4/a948e0c29bb44c9c954c239e54e30df7 [2022-07-21 08:59:06,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:59:06,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:59:06,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:59:06,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:59:06,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:59:06,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:59:06" (1/1) ... [2022-07-21 08:59:06,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@229de31f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:06, skipping insertion in model container [2022-07-21 08:59:06,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:59:06" (1/1) ... [2022-07-21 08:59:06,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:59:06,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:59:06,935 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-node-subst.wvr.c[3996,4009] [2022-07-21 08:59:06,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:59:07,002 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:59:07,035 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-node-subst.wvr.c[3996,4009] [2022-07-21 08:59:07,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:59:07,056 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:59:07,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:07 WrapperNode [2022-07-21 08:59:07,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:59:07,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:59:07,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:59:07,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:59:07,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:07" (1/1) ... [2022-07-21 08:59:07,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:07" (1/1) ... [2022-07-21 08:59:07,109 INFO L137 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 437 [2022-07-21 08:59:07,110 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:59:07,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:59:07,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:59:07,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:59:07,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:07" (1/1) ... [2022-07-21 08:59:07,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:07" (1/1) ... [2022-07-21 08:59:07,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:07" (1/1) ... [2022-07-21 08:59:07,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:07" (1/1) ... [2022-07-21 08:59:07,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:07" (1/1) ... [2022-07-21 08:59:07,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:07" (1/1) ... [2022-07-21 08:59:07,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:07" (1/1) ... [2022-07-21 08:59:07,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:59:07,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:59:07,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:59:07,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:59:07,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:07" (1/1) ... [2022-07-21 08:59:07,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:59:07,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:59:07,201 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 08:59:07,203 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 08:59:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:59:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:59:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:59:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:59:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 08:59:07,238 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 08:59:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 08:59:07,238 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 08:59:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-21 08:59:07,239 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-21 08:59:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:59:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 08:59:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:59:07,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:59:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:59:07,242 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 08:59:07,411 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:59:07,428 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:59:08,126 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:59:08,142 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:59:08,142 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-21 08:59:08,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:59:08 BoogieIcfgContainer [2022-07-21 08:59:08,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:59:08,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:59:08,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:59:08,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:59:08,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:59:06" (1/3) ... [2022-07-21 08:59:08,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c2e4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:59:08, skipping insertion in model container [2022-07-21 08:59:08,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:07" (2/3) ... [2022-07-21 08:59:08,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c2e4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:59:08, skipping insertion in model container [2022-07-21 08:59:08,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:59:08" (3/3) ... [2022-07-21 08:59:08,154 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2022-07-21 08:59:08,160 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:59:08,168 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:59:08,169 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:59:08,169 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:59:08,289 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-21 08:59:08,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 537 places, 574 transitions, 1172 flow [2022-07-21 08:59:08,525 INFO L129 PetriNetUnfolder]: 47/571 cut-off events. [2022-07-21 08:59:08,525 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 08:59:08,534 INFO L84 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 571 events. 47/571 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 848 event pairs, 0 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 479. Up to 2 conditions per place. [2022-07-21 08:59:08,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 537 places, 574 transitions, 1172 flow [2022-07-21 08:59:08,543 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 523 places, 560 transitions, 1138 flow [2022-07-21 08:59:08,552 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:59:08,558 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@6535a1c9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1b991d6f [2022-07-21 08:59:08,559 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-21 08:59:08,665 INFO L129 PetriNetUnfolder]: 47/559 cut-off events. [2022-07-21 08:59:08,666 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 08:59:08,666 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:08,667 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:08,668 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:08,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:08,672 INFO L85 PathProgramCache]: Analyzing trace with hash 2022928042, now seen corresponding path program 1 times [2022-07-21 08:59:08,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:08,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717850221] [2022-07-21 08:59:08,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:08,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:09,106 INFO 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 08:59:09,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:09,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717850221] [2022-07-21 08:59:09,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717850221] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:09,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:09,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:59:09,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760598410] [2022-07-21 08:59:09,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:09,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 08:59:09,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:09,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 08:59:09,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 08:59:09,162 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 538 out of 574 [2022-07-21 08:59:09,167 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 560 transitions, 1138 flow. Second operand has 2 states, 2 states have (on average 543.0) internal successors, (1086), 2 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:09,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:09,168 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 538 of 574 [2022-07-21 08:59:09,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:09,309 INFO L129 PetriNetUnfolder]: 18/531 cut-off events. [2022-07-21 08:59:09,309 INFO L130 PetriNetUnfolder]: For 14/16 co-relation queries the response was YES. [2022-07-21 08:59:09,315 INFO L84 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 531 events. 18/531 cut-off events. For 14/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 825 event pairs, 0 based on Foata normal form. 34/524 useless extension candidates. Maximal degree in co-relation 455. Up to 7 conditions per place. [2022-07-21 08:59:09,318 INFO L132 encePairwiseOnDemand]: 545/574 looper letters, 6 selfloop transitions, 0 changer transitions 17/531 dead transitions. [2022-07-21 08:59:09,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 531 transitions, 1092 flow [2022-07-21 08:59:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 08:59:09,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-21 08:59:09,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1111 transitions. [2022-07-21 08:59:09,340 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9677700348432056 [2022-07-21 08:59:09,341 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1111 transitions. [2022-07-21 08:59:09,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1111 transitions. [2022-07-21 08:59:09,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:09,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1111 transitions. [2022-07-21 08:59:09,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 555.5) internal successors, (1111), 2 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:09,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 574.0) internal successors, (1722), 3 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:09,366 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 574.0) internal successors, (1722), 3 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:09,368 INFO L186 Difference]: Start difference. First operand has 523 places, 560 transitions, 1138 flow. Second operand 2 states and 1111 transitions. [2022-07-21 08:59:09,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 531 transitions, 1092 flow [2022-07-21 08:59:09,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 531 transitions, 1080 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-21 08:59:09,400 INFO L242 Difference]: Finished difference. Result has 518 places, 514 transitions, 1034 flow [2022-07-21 08:59:09,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1034, PETRI_PLACES=518, PETRI_TRANSITIONS=514} [2022-07-21 08:59:09,407 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -5 predicate places. [2022-07-21 08:59:09,408 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 514 transitions, 1034 flow [2022-07-21 08:59:09,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 543.0) internal successors, (1086), 2 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:09,410 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:09,410 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:09,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:59:09,411 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:09,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:09,414 INFO L85 PathProgramCache]: Analyzing trace with hash -735916760, now seen corresponding path program 1 times [2022-07-21 08:59:09,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:09,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637552288] [2022-07-21 08:59:09,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:09,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:09,736 INFO 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 08:59:09,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:09,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637552288] [2022-07-21 08:59:09,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637552288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:09,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:09,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:59:09,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920288924] [2022-07-21 08:59:09,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:09,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:59:09,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:09,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:59:09,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:59:09,747 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 531 out of 574 [2022-07-21 08:59:09,749 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 514 transitions, 1034 flow. Second operand has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:09,749 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:09,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 531 of 574 [2022-07-21 08:59:09,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:10,025 INFO L129 PetriNetUnfolder]: 44/720 cut-off events. [2022-07-21 08:59:10,025 INFO L130 PetriNetUnfolder]: For 10/33 co-relation queries the response was YES. [2022-07-21 08:59:10,030 INFO L84 FinitePrefix]: Finished finitePrefix Result has 780 conditions, 720 events. 44/720 cut-off events. For 10/33 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2195 event pairs, 10 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 777. Up to 35 conditions per place. [2022-07-21 08:59:10,034 INFO L132 encePairwiseOnDemand]: 570/574 looper letters, 14 selfloop transitions, 3 changer transitions 0/518 dead transitions. [2022-07-21 08:59:10,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 518 transitions, 1078 flow [2022-07-21 08:59:10,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:59:10,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:59:10,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1611 transitions. [2022-07-21 08:59:10,038 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9355400696864111 [2022-07-21 08:59:10,042 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1611 transitions. [2022-07-21 08:59:10,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1611 transitions. [2022-07-21 08:59:10,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:10,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1611 transitions. [2022-07-21 08:59:10,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 537.0) internal successors, (1611), 3 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,053 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,053 INFO L186 Difference]: Start difference. First operand has 518 places, 514 transitions, 1034 flow. Second operand 3 states and 1611 transitions. [2022-07-21 08:59:10,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 518 transitions, 1078 flow [2022-07-21 08:59:10,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 518 transitions, 1078 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:59:10,063 INFO L242 Difference]: Finished difference. Result has 505 places, 516 transitions, 1056 flow [2022-07-21 08:59:10,064 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1056, PETRI_PLACES=505, PETRI_TRANSITIONS=516} [2022-07-21 08:59:10,065 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -18 predicate places. [2022-07-21 08:59:10,065 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 516 transitions, 1056 flow [2022-07-21 08:59:10,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,066 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:10,067 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:10,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:59:10,067 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:10,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:10,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1470072086, now seen corresponding path program 1 times [2022-07-21 08:59:10,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:10,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052978908] [2022-07-21 08:59:10,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:10,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:10,175 INFO 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 08:59:10,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:10,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052978908] [2022-07-21 08:59:10,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052978908] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:10,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:10,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:59:10,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557946212] [2022-07-21 08:59:10,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:10,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:59:10,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:10,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:59:10,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:59:10,181 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 531 out of 574 [2022-07-21 08:59:10,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 516 transitions, 1056 flow. Second operand has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,184 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:10,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 531 of 574 [2022-07-21 08:59:10,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:10,376 INFO L129 PetriNetUnfolder]: 48/795 cut-off events. [2022-07-21 08:59:10,377 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-07-21 08:59:10,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 795 events. 48/795 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2861 event pairs, 10 based on Foata normal form. 0/746 useless extension candidates. Maximal degree in co-relation 877. Up to 35 conditions per place. [2022-07-21 08:59:10,388 INFO L132 encePairwiseOnDemand]: 570/574 looper letters, 14 selfloop transitions, 3 changer transitions 0/520 dead transitions. [2022-07-21 08:59:10,389 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 520 transitions, 1100 flow [2022-07-21 08:59:10,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:59:10,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:59:10,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1611 transitions. [2022-07-21 08:59:10,393 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9355400696864111 [2022-07-21 08:59:10,393 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1611 transitions. [2022-07-21 08:59:10,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1611 transitions. [2022-07-21 08:59:10,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:10,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1611 transitions. [2022-07-21 08:59:10,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 537.0) internal successors, (1611), 3 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,404 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,404 INFO L186 Difference]: Start difference. First operand has 505 places, 516 transitions, 1056 flow. Second operand 3 states and 1611 transitions. [2022-07-21 08:59:10,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 520 transitions, 1100 flow [2022-07-21 08:59:10,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 520 transitions, 1094 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:59:10,416 INFO L242 Difference]: Finished difference. Result has 507 places, 518 transitions, 1072 flow [2022-07-21 08:59:10,417 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1072, PETRI_PLACES=507, PETRI_TRANSITIONS=518} [2022-07-21 08:59:10,418 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -16 predicate places. [2022-07-21 08:59:10,418 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 518 transitions, 1072 flow [2022-07-21 08:59:10,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,419 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:10,420 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:10,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:59:10,420 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:10,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:10,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1154364988, now seen corresponding path program 1 times [2022-07-21 08:59:10,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:10,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124970476] [2022-07-21 08:59:10,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:10,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:10,527 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 08:59:10,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:10,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124970476] [2022-07-21 08:59:10,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124970476] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:10,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:10,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:59:10,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356402569] [2022-07-21 08:59:10,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:10,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:59:10,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:10,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:59:10,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:59:10,533 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 531 out of 574 [2022-07-21 08:59:10,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 518 transitions, 1072 flow. Second operand has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:10,535 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 531 of 574 [2022-07-21 08:59:10,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:10,658 INFO L129 PetriNetUnfolder]: 40/663 cut-off events. [2022-07-21 08:59:10,659 INFO L130 PetriNetUnfolder]: For 20/22 co-relation queries the response was YES. [2022-07-21 08:59:10,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 663 events. 40/663 cut-off events. For 20/22 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1655 event pairs, 10 based on Foata normal form. 0/625 useless extension candidates. Maximal degree in co-relation 728. Up to 35 conditions per place. [2022-07-21 08:59:10,668 INFO L132 encePairwiseOnDemand]: 570/574 looper letters, 14 selfloop transitions, 3 changer transitions 0/522 dead transitions. [2022-07-21 08:59:10,668 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 522 transitions, 1116 flow [2022-07-21 08:59:10,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:59:10,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:59:10,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1611 transitions. [2022-07-21 08:59:10,672 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9355400696864111 [2022-07-21 08:59:10,672 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1611 transitions. [2022-07-21 08:59:10,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1611 transitions. [2022-07-21 08:59:10,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:10,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1611 transitions. [2022-07-21 08:59:10,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 537.0) internal successors, (1611), 3 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,681 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,681 INFO L186 Difference]: Start difference. First operand has 507 places, 518 transitions, 1072 flow. Second operand 3 states and 1611 transitions. [2022-07-21 08:59:10,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 522 transitions, 1116 flow [2022-07-21 08:59:10,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 522 transitions, 1110 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:59:10,691 INFO L242 Difference]: Finished difference. Result has 509 places, 520 transitions, 1088 flow [2022-07-21 08:59:10,692 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1088, PETRI_PLACES=509, PETRI_TRANSITIONS=520} [2022-07-21 08:59:10,693 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -14 predicate places. [2022-07-21 08:59:10,693 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 520 transitions, 1088 flow [2022-07-21 08:59:10,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,695 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:10,695 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:10,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:59:10,695 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:10,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:10,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1945453358, now seen corresponding path program 1 times [2022-07-21 08:59:10,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:10,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533573530] [2022-07-21 08:59:10,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:10,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:10,971 INFO 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 08:59:10,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:10,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533573530] [2022-07-21 08:59:10,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533573530] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:10,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:10,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:59:10,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298430792] [2022-07-21 08:59:10,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:10,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:59:10,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:10,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:59:10,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:59:10,979 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 574 [2022-07-21 08:59:10,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 520 transitions, 1088 flow. Second operand has 8 states, 8 states have (on average 426.375) internal successors, (3411), 8 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,984 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:10,984 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 574 [2022-07-21 08:59:10,984 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:11,374 INFO L129 PetriNetUnfolder]: 97/1244 cut-off events. [2022-07-21 08:59:11,375 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-07-21 08:59:11,390 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1539 conditions, 1244 events. 97/1244 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6392 event pairs, 39 based on Foata normal form. 0/1163 useless extension candidates. Maximal degree in co-relation 1532. Up to 159 conditions per place. [2022-07-21 08:59:11,399 INFO L132 encePairwiseOnDemand]: 562/574 looper letters, 106 selfloop transitions, 11 changer transitions 0/524 dead transitions. [2022-07-21 08:59:11,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 524 transitions, 1330 flow [2022-07-21 08:59:11,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:59:11,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:59:11,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3844 transitions. [2022-07-21 08:59:11,408 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7440960123886953 [2022-07-21 08:59:11,408 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3844 transitions. [2022-07-21 08:59:11,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3844 transitions. [2022-07-21 08:59:11,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:11,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3844 transitions. [2022-07-21 08:59:11,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 427.1111111111111) internal successors, (3844), 9 states have internal predecessors, (3844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:11,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:11,433 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:11,434 INFO L186 Difference]: Start difference. First operand has 509 places, 520 transitions, 1088 flow. Second operand 9 states and 3844 transitions. [2022-07-21 08:59:11,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 524 transitions, 1330 flow [2022-07-21 08:59:11,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 524 transitions, 1324 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:59:11,446 INFO L242 Difference]: Finished difference. Result has 516 places, 521 transitions, 1112 flow [2022-07-21 08:59:11,447 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1082, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1112, PETRI_PLACES=516, PETRI_TRANSITIONS=521} [2022-07-21 08:59:11,450 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -7 predicate places. [2022-07-21 08:59:11,450 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 521 transitions, 1112 flow [2022-07-21 08:59:11,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 426.375) internal successors, (3411), 8 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:11,452 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:11,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:11,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:59:11,452 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:11,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:11,454 INFO L85 PathProgramCache]: Analyzing trace with hash -23497976, now seen corresponding path program 1 times [2022-07-21 08:59:11,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:11,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478714931] [2022-07-21 08:59:11,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:11,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:11,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:11,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:11,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478714931] [2022-07-21 08:59:11,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478714931] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:59:11,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016372905] [2022-07-21 08:59:11,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:11,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:59:11,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:59:11,667 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:59:11,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 08:59:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:11,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 08:59:11,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:59:12,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:12,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:59:12,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:12,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016372905] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 08:59:12,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 08:59:12,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-07-21 08:59:12,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129918570] [2022-07-21 08:59:12,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:12,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:59:12,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:12,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:59:12,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:59:12,443 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 459 out of 574 [2022-07-21 08:59:12,448 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 521 transitions, 1112 flow. Second operand has 9 states, 9 states have (on average 466.0) internal successors, (4194), 9 states have internal predecessors, (4194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:12,448 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:12,448 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 459 of 574 [2022-07-21 08:59:12,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:12,912 INFO L129 PetriNetUnfolder]: 97/1245 cut-off events. [2022-07-21 08:59:12,912 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-21 08:59:12,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 1245 events. 97/1245 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6378 event pairs, 39 based on Foata normal form. 0/1164 useless extension candidates. Maximal degree in co-relation 1517. Up to 130 conditions per place. [2022-07-21 08:59:12,935 INFO L132 encePairwiseOnDemand]: 556/574 looper letters, 71 selfloop transitions, 17 changer transitions 0/523 dead transitions. [2022-07-21 08:59:12,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 523 transitions, 1292 flow [2022-07-21 08:59:12,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:59:12,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:59:12,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5137 transitions. [2022-07-21 08:59:12,947 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.813588850174216 [2022-07-21 08:59:12,948 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5137 transitions. [2022-07-21 08:59:12,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5137 transitions. [2022-07-21 08:59:12,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:12,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5137 transitions. [2022-07-21 08:59:12,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 467.0) internal successors, (5137), 11 states have internal predecessors, (5137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:12,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 574.0) internal successors, (6888), 12 states have internal predecessors, (6888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:12,975 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 574.0) internal successors, (6888), 12 states have internal predecessors, (6888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:12,975 INFO L186 Difference]: Start difference. First operand has 516 places, 521 transitions, 1112 flow. Second operand 11 states and 5137 transitions. [2022-07-21 08:59:12,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 523 transitions, 1292 flow [2022-07-21 08:59:12,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 523 transitions, 1272 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-07-21 08:59:12,987 INFO L242 Difference]: Finished difference. Result has 522 places, 523 transitions, 1146 flow [2022-07-21 08:59:12,988 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1146, PETRI_PLACES=522, PETRI_TRANSITIONS=523} [2022-07-21 08:59:12,989 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -1 predicate places. [2022-07-21 08:59:12,989 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 523 transitions, 1146 flow [2022-07-21 08:59:12,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 466.0) internal successors, (4194), 9 states have internal predecessors, (4194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:12,991 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:12,991 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:13,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 08:59:13,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-21 08:59:13,216 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:13,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:13,217 INFO L85 PathProgramCache]: Analyzing trace with hash -317225092, now seen corresponding path program 1 times [2022-07-21 08:59:13,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:13,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107479915] [2022-07-21 08:59:13,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:13,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:59:13,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:13,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107479915] [2022-07-21 08:59:13,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107479915] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:13,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:13,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:59:13,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657032617] [2022-07-21 08:59:13,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:13,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:59:13,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:13,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:59:13,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:59:13,499 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 574 [2022-07-21 08:59:13,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 523 transitions, 1146 flow. Second operand has 8 states, 8 states have (on average 426.875) internal successors, (3415), 8 states have internal predecessors, (3415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:13,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:13,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 574 [2022-07-21 08:59:13,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:13,808 INFO L129 PetriNetUnfolder]: 67/1026 cut-off events. [2022-07-21 08:59:13,808 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-07-21 08:59:13,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1298 conditions, 1026 events. 67/1026 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3991 event pairs, 21 based on Foata normal form. 0/966 useless extension candidates. Maximal degree in co-relation 1287. Up to 136 conditions per place. [2022-07-21 08:59:13,826 INFO L132 encePairwiseOnDemand]: 562/574 looper letters, 108 selfloop transitions, 11 changer transitions 0/527 dead transitions. [2022-07-21 08:59:13,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 527 transitions, 1392 flow [2022-07-21 08:59:13,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:59:13,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:59:13,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3844 transitions. [2022-07-21 08:59:13,835 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7440960123886953 [2022-07-21 08:59:13,836 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3844 transitions. [2022-07-21 08:59:13,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3844 transitions. [2022-07-21 08:59:13,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:13,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3844 transitions. [2022-07-21 08:59:13,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 427.1111111111111) internal successors, (3844), 9 states have internal predecessors, (3844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:13,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:13,856 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:13,856 INFO L186 Difference]: Start difference. First operand has 522 places, 523 transitions, 1146 flow. Second operand 9 states and 3844 transitions. [2022-07-21 08:59:13,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 527 transitions, 1392 flow [2022-07-21 08:59:13,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 527 transitions, 1365 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-21 08:59:13,869 INFO L242 Difference]: Finished difference. Result has 523 places, 524 transitions, 1149 flow [2022-07-21 08:59:13,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1149, PETRI_PLACES=523, PETRI_TRANSITIONS=524} [2022-07-21 08:59:13,871 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 0 predicate places. [2022-07-21 08:59:13,871 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 524 transitions, 1149 flow [2022-07-21 08:59:13,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 426.875) internal successors, (3415), 8 states have internal predecessors, (3415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:13,873 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:13,873 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:13,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:59:13,873 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:13,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:13,874 INFO L85 PathProgramCache]: Analyzing trace with hash 734939679, now seen corresponding path program 1 times [2022-07-21 08:59:13,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:13,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531840195] [2022-07-21 08:59:13,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:13,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:59:14,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:14,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531840195] [2022-07-21 08:59:14,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531840195] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:59:14,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608864096] [2022-07-21 08:59:14,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:14,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:59:14,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:59:14,035 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:59:14,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 08:59:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:14,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 08:59:14,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:59:14,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:59:14,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:59:14,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:59:14,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608864096] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 08:59:14,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 08:59:14,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-07-21 08:59:14,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347868545] [2022-07-21 08:59:14,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:14,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:59:14,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:14,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:59:14,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:59:14,660 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 459 out of 574 [2022-07-21 08:59:14,664 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 524 transitions, 1149 flow. Second operand has 9 states, 9 states have (on average 466.8888888888889) internal successors, (4202), 9 states have internal predecessors, (4202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:14,664 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:14,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 459 of 574 [2022-07-21 08:59:14,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:15,067 INFO L129 PetriNetUnfolder]: 67/1027 cut-off events. [2022-07-21 08:59:15,068 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-07-21 08:59:15,082 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1274 conditions, 1027 events. 67/1027 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3980 event pairs, 21 based on Foata normal form. 0/966 useless extension candidates. Maximal degree in co-relation 1262. Up to 91 conditions per place. [2022-07-21 08:59:15,088 INFO L132 encePairwiseOnDemand]: 554/574 looper letters, 71 selfloop transitions, 20 changer transitions 0/526 dead transitions. [2022-07-21 08:59:15,088 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 526 transitions, 1335 flow [2022-07-21 08:59:15,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:59:15,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:59:15,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 6055 transitions. [2022-07-21 08:59:15,100 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8114446529080676 [2022-07-21 08:59:15,100 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 6055 transitions. [2022-07-21 08:59:15,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 6055 transitions. [2022-07-21 08:59:15,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:15,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 6055 transitions. [2022-07-21 08:59:15,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 465.7692307692308) internal successors, (6055), 13 states have internal predecessors, (6055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 574.0) internal successors, (8036), 14 states have internal predecessors, (8036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,129 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 574.0) internal successors, (8036), 14 states have internal predecessors, (8036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,129 INFO L186 Difference]: Start difference. First operand has 523 places, 524 transitions, 1149 flow. Second operand 13 states and 6055 transitions. [2022-07-21 08:59:15,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 526 transitions, 1335 flow [2022-07-21 08:59:15,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 526 transitions, 1315 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-07-21 08:59:15,143 INFO L242 Difference]: Finished difference. Result has 531 places, 526 transitions, 1189 flow [2022-07-21 08:59:15,145 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1189, PETRI_PLACES=531, PETRI_TRANSITIONS=526} [2022-07-21 08:59:15,147 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 8 predicate places. [2022-07-21 08:59:15,147 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 526 transitions, 1189 flow [2022-07-21 08:59:15,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 466.8888888888889) internal successors, (4202), 9 states have internal predecessors, (4202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,149 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:15,149 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:15,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 08:59:15,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-21 08:59:15,380 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:15,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:15,380 INFO L85 PathProgramCache]: Analyzing trace with hash -2034615736, now seen corresponding path program 1 times [2022-07-21 08:59:15,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:15,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977686989] [2022-07-21 08:59:15,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:15,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:15,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 08:59:15,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:15,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977686989] [2022-07-21 08:59:15,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977686989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:15,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:15,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:59:15,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552771180] [2022-07-21 08:59:15,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:15,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:59:15,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:15,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:59:15,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:59:15,611 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 444 out of 574 [2022-07-21 08:59:15,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 526 transitions, 1189 flow. Second operand has 7 states, 7 states have (on average 455.57142857142856) internal successors, (3189), 7 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:15,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 444 of 574 [2022-07-21 08:59:15,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:15,934 INFO L129 PetriNetUnfolder]: 59/942 cut-off events. [2022-07-21 08:59:15,934 INFO L130 PetriNetUnfolder]: For 21/31 co-relation queries the response was YES. [2022-07-21 08:59:15,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1222 conditions, 942 events. 59/942 cut-off events. For 21/31 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3477 event pairs, 14 based on Foata normal form. 1/898 useless extension candidates. Maximal degree in co-relation 1207. Up to 112 conditions per place. [2022-07-21 08:59:15,951 INFO L132 encePairwiseOnDemand]: 566/574 looper letters, 94 selfloop transitions, 5 changer transitions 4/546 dead transitions. [2022-07-21 08:59:15,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 546 transitions, 1448 flow [2022-07-21 08:59:15,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:59:15,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:59:15,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4100 transitions. [2022-07-21 08:59:15,960 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7936507936507936 [2022-07-21 08:59:15,960 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4100 transitions. [2022-07-21 08:59:15,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4100 transitions. [2022-07-21 08:59:15,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:15,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4100 transitions. [2022-07-21 08:59:15,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 455.55555555555554) internal successors, (4100), 9 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,981 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,982 INFO L186 Difference]: Start difference. First operand has 531 places, 526 transitions, 1189 flow. Second operand 9 states and 4100 transitions. [2022-07-21 08:59:15,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 546 transitions, 1448 flow [2022-07-21 08:59:15,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 546 transitions, 1415 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-07-21 08:59:15,994 INFO L242 Difference]: Finished difference. Result has 536 places, 530 transitions, 1197 flow [2022-07-21 08:59:15,995 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1197, PETRI_PLACES=536, PETRI_TRANSITIONS=530} [2022-07-21 08:59:15,996 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 13 predicate places. [2022-07-21 08:59:15,996 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 530 transitions, 1197 flow [2022-07-21 08:59:15,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 455.57142857142856) internal successors, (3189), 7 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,998 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:15,998 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:15,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:59:15,998 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:15,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:15,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1765072472, now seen corresponding path program 1 times [2022-07-21 08:59:15,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:16,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133829299] [2022-07-21 08:59:16,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:16,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:16,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 08:59:16,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:16,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133829299] [2022-07-21 08:59:16,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133829299] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:16,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:16,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:59:16,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182877775] [2022-07-21 08:59:16,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:16,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:59:16,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:16,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:59:16,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:59:16,254 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 574 [2022-07-21 08:59:16,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 530 transitions, 1197 flow. Second operand has 8 states, 8 states have (on average 427.375) internal successors, (3419), 8 states have internal predecessors, (3419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:16,258 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:16,258 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 574 [2022-07-21 08:59:16,258 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:16,685 INFO L129 PetriNetUnfolder]: 147/1661 cut-off events. [2022-07-21 08:59:16,685 INFO L130 PetriNetUnfolder]: For 60/70 co-relation queries the response was YES. [2022-07-21 08:59:16,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2093 conditions, 1661 events. 147/1661 cut-off events. For 60/70 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 9575 event pairs, 66 based on Foata normal form. 0/1527 useless extension candidates. Maximal degree in co-relation 2071. Up to 174 conditions per place. [2022-07-21 08:59:16,710 INFO L132 encePairwiseOnDemand]: 564/574 looper letters, 112 selfloop transitions, 9 changer transitions 0/534 dead transitions. [2022-07-21 08:59:16,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 534 transitions, 1447 flow [2022-07-21 08:59:16,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 08:59:16,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-21 08:59:16,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3430 transitions. [2022-07-21 08:59:16,721 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7469512195121951 [2022-07-21 08:59:16,721 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3430 transitions. [2022-07-21 08:59:16,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3430 transitions. [2022-07-21 08:59:16,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:16,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3430 transitions. [2022-07-21 08:59:16,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 428.75) internal successors, (3430), 8 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:16,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 574.0) internal successors, (5166), 9 states have internal predecessors, (5166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:16,740 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 574.0) internal successors, (5166), 9 states have internal predecessors, (5166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:16,740 INFO L186 Difference]: Start difference. First operand has 536 places, 530 transitions, 1197 flow. Second operand 8 states and 3430 transitions. [2022-07-21 08:59:16,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 534 transitions, 1447 flow [2022-07-21 08:59:16,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 534 transitions, 1442 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-21 08:59:16,753 INFO L242 Difference]: Finished difference. Result has 539 places, 531 transitions, 1218 flow [2022-07-21 08:59:16,754 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1218, PETRI_PLACES=539, PETRI_TRANSITIONS=531} [2022-07-21 08:59:16,755 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 16 predicate places. [2022-07-21 08:59:16,755 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 531 transitions, 1218 flow [2022-07-21 08:59:16,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 427.375) internal successors, (3419), 8 states have internal predecessors, (3419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:16,757 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:16,757 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:16,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:59:16,757 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:16,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:16,758 INFO L85 PathProgramCache]: Analyzing trace with hash 681701814, now seen corresponding path program 1 times [2022-07-21 08:59:16,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:16,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104792087] [2022-07-21 08:59:16,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:16,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:16,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 08:59:16,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:16,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104792087] [2022-07-21 08:59:16,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104792087] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:59:16,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346917786] [2022-07-21 08:59:16,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:16,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:59:16,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:59:16,922 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:59:16,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 08:59:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:17,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 08:59:17,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:59:17,305 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 08:59:17,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:59:17,531 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 08:59:17,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346917786] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 08:59:17,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 08:59:17,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-07-21 08:59:17,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422200663] [2022-07-21 08:59:17,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:17,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:59:17,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:17,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:59:17,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:59:17,538 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 459 out of 574 [2022-07-21 08:59:17,541 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 531 transitions, 1218 flow. Second operand has 9 states, 9 states have (on average 467.77777777777777) internal successors, (4210), 9 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:17,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:17,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 459 of 574 [2022-07-21 08:59:17,542 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:18,055 INFO L129 PetriNetUnfolder]: 147/1662 cut-off events. [2022-07-21 08:59:18,055 INFO L130 PetriNetUnfolder]: For 77/87 co-relation queries the response was YES. [2022-07-21 08:59:18,071 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2078 conditions, 1662 events. 147/1662 cut-off events. For 77/87 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 9556 event pairs, 66 based on Foata normal form. 0/1529 useless extension candidates. Maximal degree in co-relation 2057. Up to 134 conditions per place. [2022-07-21 08:59:18,077 INFO L132 encePairwiseOnDemand]: 554/574 looper letters, 73 selfloop transitions, 21 changer transitions 0/533 dead transitions. [2022-07-21 08:59:18,077 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 533 transitions, 1410 flow [2022-07-21 08:59:18,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:59:18,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-21 08:59:18,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 5596 transitions. [2022-07-21 08:59:18,089 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8124274099883856 [2022-07-21 08:59:18,089 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 5596 transitions. [2022-07-21 08:59:18,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 5596 transitions. [2022-07-21 08:59:18,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:18,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 5596 transitions. [2022-07-21 08:59:18,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 466.3333333333333) internal successors, (5596), 12 states have internal predecessors, (5596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:18,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 574.0) internal successors, (7462), 13 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:18,117 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 574.0) internal successors, (7462), 13 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:18,117 INFO L186 Difference]: Start difference. First operand has 539 places, 531 transitions, 1218 flow. Second operand 12 states and 5596 transitions. [2022-07-21 08:59:18,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 533 transitions, 1410 flow [2022-07-21 08:59:18,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 533 transitions, 1394 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-21 08:59:18,128 INFO L242 Difference]: Finished difference. Result has 547 places, 533 transitions, 1263 flow [2022-07-21 08:59:18,129 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1263, PETRI_PLACES=547, PETRI_TRANSITIONS=533} [2022-07-21 08:59:18,130 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 24 predicate places. [2022-07-21 08:59:18,130 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 533 transitions, 1263 flow [2022-07-21 08:59:18,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 467.77777777777777) internal successors, (4210), 9 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:18,132 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:18,132 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:18,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 08:59:18,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:59:18,350 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:18,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:18,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1167783152, now seen corresponding path program 1 times [2022-07-21 08:59:18,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:18,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475890112] [2022-07-21 08:59:18,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:18,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:18,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 08:59:18,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:18,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475890112] [2022-07-21 08:59:18,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475890112] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:18,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:18,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:59:18,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256234217] [2022-07-21 08:59:18,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:18,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:59:18,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:18,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:59:18,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:59:18,636 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-21 08:59:18,639 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 533 transitions, 1263 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:18,639 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:18,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-21 08:59:18,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:19,631 INFO L129 PetriNetUnfolder]: 644/2573 cut-off events. [2022-07-21 08:59:19,632 INFO L130 PetriNetUnfolder]: For 312/333 co-relation queries the response was YES. [2022-07-21 08:59:19,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3902 conditions, 2573 events. 644/2573 cut-off events. For 312/333 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 20455 event pairs, 294 based on Foata normal form. 6/2393 useless extension candidates. Maximal degree in co-relation 3878. Up to 612 conditions per place. [2022-07-21 08:59:19,666 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 139 selfloop transitions, 30 changer transitions 24/634 dead transitions. [2022-07-21 08:59:19,666 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 634 transitions, 1888 flow [2022-07-21 08:59:19,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 08:59:19,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 08:59:19,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 10634 transitions. [2022-07-21 08:59:19,689 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7719221835075494 [2022-07-21 08:59:19,689 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 10634 transitions. [2022-07-21 08:59:19,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 10634 transitions. [2022-07-21 08:59:19,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:19,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 10634 transitions. [2022-07-21 08:59:19,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 443.0833333333333) internal successors, (10634), 24 states have internal predecessors, (10634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:19,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 574.0) internal successors, (14350), 25 states have internal predecessors, (14350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:19,732 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 574.0) internal successors, (14350), 25 states have internal predecessors, (14350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:19,733 INFO L186 Difference]: Start difference. First operand has 547 places, 533 transitions, 1263 flow. Second operand 24 states and 10634 transitions. [2022-07-21 08:59:19,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 634 transitions, 1888 flow [2022-07-21 08:59:19,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 634 transitions, 1852 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-07-21 08:59:19,745 INFO L242 Difference]: Finished difference. Result has 581 places, 562 transitions, 1443 flow [2022-07-21 08:59:19,747 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1227, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1443, PETRI_PLACES=581, PETRI_TRANSITIONS=562} [2022-07-21 08:59:19,748 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 58 predicate places. [2022-07-21 08:59:19,748 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 562 transitions, 1443 flow [2022-07-21 08:59:19,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:19,749 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:19,749 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:19,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:59:19,750 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:19,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:19,751 INFO L85 PathProgramCache]: Analyzing trace with hash -584080018, now seen corresponding path program 2 times [2022-07-21 08:59:19,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:19,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262171780] [2022-07-21 08:59:19,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:19,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:20,082 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 08:59:20,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:20,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262171780] [2022-07-21 08:59:20,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262171780] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:20,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:20,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:59:20,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893879984] [2022-07-21 08:59:20,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:20,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:59:20,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:20,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:59:20,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:59:20,092 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-21 08:59:20,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 562 transitions, 1443 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:20,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:20,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-21 08:59:20,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:21,496 INFO L129 PetriNetUnfolder]: 1010/3765 cut-off events. [2022-07-21 08:59:21,496 INFO L130 PetriNetUnfolder]: For 3440/3489 co-relation queries the response was YES. [2022-07-21 08:59:21,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7973 conditions, 3765 events. 1010/3765 cut-off events. For 3440/3489 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 35332 event pairs, 498 based on Foata normal form. 1/3470 useless extension candidates. Maximal degree in co-relation 7929. Up to 937 conditions per place. [2022-07-21 08:59:21,552 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 172 selfloop transitions, 45 changer transitions 22/680 dead transitions. [2022-07-21 08:59:21,552 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 680 transitions, 2468 flow [2022-07-21 08:59:21,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 08:59:21,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 08:59:21,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 10631 transitions. [2022-07-21 08:59:21,564 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7717044134727061 [2022-07-21 08:59:21,564 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 10631 transitions. [2022-07-21 08:59:21,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 10631 transitions. [2022-07-21 08:59:21,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:21,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 10631 transitions. [2022-07-21 08:59:21,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 442.9583333333333) internal successors, (10631), 24 states have internal predecessors, (10631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:21,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 574.0) internal successors, (14350), 25 states have internal predecessors, (14350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:21,602 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 574.0) internal successors, (14350), 25 states have internal predecessors, (14350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:21,602 INFO L186 Difference]: Start difference. First operand has 581 places, 562 transitions, 1443 flow. Second operand 24 states and 10631 transitions. [2022-07-21 08:59:21,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 680 transitions, 2468 flow [2022-07-21 08:59:21,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 680 transitions, 2458 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-07-21 08:59:21,632 INFO L242 Difference]: Finished difference. Result has 620 places, 591 transitions, 1853 flow [2022-07-21 08:59:21,633 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1853, PETRI_PLACES=620, PETRI_TRANSITIONS=591} [2022-07-21 08:59:21,634 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 97 predicate places. [2022-07-21 08:59:21,634 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 591 transitions, 1853 flow [2022-07-21 08:59:21,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:21,635 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:21,636 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:21,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:59:21,636 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:21,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:21,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1345030594, now seen corresponding path program 3 times [2022-07-21 08:59:21,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:21,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208387460] [2022-07-21 08:59:21,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:21,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:21,884 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 08:59:21,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:21,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208387460] [2022-07-21 08:59:21,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208387460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:21,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:21,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:59:21,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166259236] [2022-07-21 08:59:21,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:21,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:59:21,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:21,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:59:21,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:59:21,892 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-21 08:59:21,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 591 transitions, 1853 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:21,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:21,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-21 08:59:21,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:23,430 INFO L129 PetriNetUnfolder]: 1120/4338 cut-off events. [2022-07-21 08:59:23,431 INFO L130 PetriNetUnfolder]: For 9994/10027 co-relation queries the response was YES. [2022-07-21 08:59:23,474 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10951 conditions, 4338 events. 1120/4338 cut-off events. For 9994/10027 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 42657 event pairs, 590 based on Foata normal form. 5/4004 useless extension candidates. Maximal degree in co-relation 10888. Up to 1177 conditions per place. [2022-07-21 08:59:23,496 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 161 selfloop transitions, 56 changer transitions 20/678 dead transitions. [2022-07-21 08:59:23,496 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 678 transitions, 3057 flow [2022-07-21 08:59:23,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 08:59:23,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 08:59:23,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 9747 transitions. [2022-07-21 08:59:23,504 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7718561925879 [2022-07-21 08:59:23,505 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 9747 transitions. [2022-07-21 08:59:23,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 9747 transitions. [2022-07-21 08:59:23,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:23,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 9747 transitions. [2022-07-21 08:59:23,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 443.04545454545456) internal successors, (9747), 22 states have internal predecessors, (9747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:23,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 574.0) internal successors, (13202), 23 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:23,533 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 574.0) internal successors, (13202), 23 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:23,533 INFO L186 Difference]: Start difference. First operand has 620 places, 591 transitions, 1853 flow. Second operand 22 states and 9747 transitions. [2022-07-21 08:59:23,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 678 transitions, 3057 flow [2022-07-21 08:59:23,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 678 transitions, 2919 flow, removed 69 selfloop flow, removed 2 redundant places. [2022-07-21 08:59:23,605 INFO L242 Difference]: Finished difference. Result has 651 places, 621 transitions, 2326 flow [2022-07-21 08:59:23,606 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1765, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2326, PETRI_PLACES=651, PETRI_TRANSITIONS=621} [2022-07-21 08:59:23,607 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 128 predicate places. [2022-07-21 08:59:23,607 INFO L495 AbstractCegarLoop]: Abstraction has has 651 places, 621 transitions, 2326 flow [2022-07-21 08:59:23,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:23,608 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:23,608 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:23,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:59:23,608 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:23,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:23,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1665310844, now seen corresponding path program 4 times [2022-07-21 08:59:23,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:23,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793570436] [2022-07-21 08:59:23,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:23,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:23,908 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 08:59:23,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:23,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793570436] [2022-07-21 08:59:23,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793570436] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:23,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:23,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:59:23,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193461084] [2022-07-21 08:59:23,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:23,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:59:23,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:23,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:59:23,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:59:23,916 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-21 08:59:23,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 621 transitions, 2326 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:23,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:23,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-21 08:59:23,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:25,484 INFO L129 PetriNetUnfolder]: 1273/4705 cut-off events. [2022-07-21 08:59:25,484 INFO L130 PetriNetUnfolder]: For 17970/18053 co-relation queries the response was YES. [2022-07-21 08:59:25,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13188 conditions, 4705 events. 1273/4705 cut-off events. For 17970/18053 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 47104 event pairs, 635 based on Foata normal form. 1/4336 useless extension candidates. Maximal degree in co-relation 13112. Up to 1186 conditions per place. [2022-07-21 08:59:25,575 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 179 selfloop transitions, 61 changer transitions 18/699 dead transitions. [2022-07-21 08:59:25,576 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 699 transitions, 3682 flow [2022-07-21 08:59:25,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:59:25,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:59:25,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 8871 transitions. [2022-07-21 08:59:25,585 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7727351916376307 [2022-07-21 08:59:25,586 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 8871 transitions. [2022-07-21 08:59:25,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 8871 transitions. [2022-07-21 08:59:25,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:25,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 8871 transitions. [2022-07-21 08:59:25,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 443.55) internal successors, (8871), 20 states have internal predecessors, (8871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:25,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 574.0) internal successors, (12054), 21 states have internal predecessors, (12054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:25,612 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 574.0) internal successors, (12054), 21 states have internal predecessors, (12054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:25,612 INFO L186 Difference]: Start difference. First operand has 651 places, 621 transitions, 2326 flow. Second operand 20 states and 8871 transitions. [2022-07-21 08:59:25,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 699 transitions, 3682 flow [2022-07-21 08:59:25,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 699 transitions, 3460 flow, removed 111 selfloop flow, removed 2 redundant places. [2022-07-21 08:59:25,715 INFO L242 Difference]: Finished difference. Result has 681 places, 653 transitions, 2844 flow [2022-07-21 08:59:25,716 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=2144, PETRI_DIFFERENCE_MINUEND_PLACES=647, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2844, PETRI_PLACES=681, PETRI_TRANSITIONS=653} [2022-07-21 08:59:25,716 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 158 predicate places. [2022-07-21 08:59:25,716 INFO L495 AbstractCegarLoop]: Abstraction has has 681 places, 653 transitions, 2844 flow [2022-07-21 08:59:25,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:25,717 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:25,717 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:25,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:59:25,718 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:25,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:25,718 INFO L85 PathProgramCache]: Analyzing trace with hash 781660482, now seen corresponding path program 5 times [2022-07-21 08:59:25,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:25,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725751613] [2022-07-21 08:59:25,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:25,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:25,987 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 08:59:25,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:25,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725751613] [2022-07-21 08:59:25,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725751613] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:25,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:25,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:59:25,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840426259] [2022-07-21 08:59:25,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:25,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:59:25,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:25,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:59:25,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:59:25,994 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-21 08:59:25,997 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 653 transitions, 2844 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:25,997 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:25,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-21 08:59:25,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:27,806 INFO L129 PetriNetUnfolder]: 1312/5119 cut-off events. [2022-07-21 08:59:27,807 INFO L130 PetriNetUnfolder]: For 27053/27110 co-relation queries the response was YES. [2022-07-21 08:59:27,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15073 conditions, 5119 events. 1312/5119 cut-off events. For 27053/27110 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 53418 event pairs, 736 based on Foata normal form. 19/4743 useless extension candidates. Maximal degree in co-relation 14983. Up to 1361 conditions per place. [2022-07-21 08:59:27,982 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 198 selfloop transitions, 78 changer transitions 15/732 dead transitions. [2022-07-21 08:59:27,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 732 transitions, 4359 flow [2022-07-21 08:59:27,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:59:27,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:59:27,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 8867 transitions. [2022-07-21 08:59:27,990 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7723867595818815 [2022-07-21 08:59:27,991 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 8867 transitions. [2022-07-21 08:59:27,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 8867 transitions. [2022-07-21 08:59:27,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:27,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 8867 transitions. [2022-07-21 08:59:28,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 443.35) internal successors, (8867), 20 states have internal predecessors, (8867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:28,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 574.0) internal successors, (12054), 21 states have internal predecessors, (12054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:28,019 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 574.0) internal successors, (12054), 21 states have internal predecessors, (12054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:28,019 INFO L186 Difference]: Start difference. First operand has 681 places, 653 transitions, 2844 flow. Second operand 20 states and 8867 transitions. [2022-07-21 08:59:28,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 698 places, 732 transitions, 4359 flow [2022-07-21 08:59:28,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 696 places, 732 transitions, 4003 flow, removed 178 selfloop flow, removed 2 redundant places. [2022-07-21 08:59:28,199 INFO L242 Difference]: Finished difference. Result has 711 places, 684 transitions, 3381 flow [2022-07-21 08:59:28,200 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=2618, PETRI_DIFFERENCE_MINUEND_PLACES=677, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3381, PETRI_PLACES=711, PETRI_TRANSITIONS=684} [2022-07-21 08:59:28,200 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 188 predicate places. [2022-07-21 08:59:28,201 INFO L495 AbstractCegarLoop]: Abstraction has has 711 places, 684 transitions, 3381 flow [2022-07-21 08:59:28,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:28,201 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:28,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:28,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:59:28,202 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:28,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:28,203 INFO L85 PathProgramCache]: Analyzing trace with hash -316243756, now seen corresponding path program 6 times [2022-07-21 08:59:28,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:28,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580619775] [2022-07-21 08:59:28,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:28,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:28,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 08:59:28,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:28,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580619775] [2022-07-21 08:59:28,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580619775] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:28,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:28,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:59:28,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632151415] [2022-07-21 08:59:28,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:28,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:59:28,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:28,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:59:28,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:59:28,474 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-21 08:59:28,478 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 684 transitions, 3381 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:28,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:28,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-21 08:59:28,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:30,396 INFO L129 PetriNetUnfolder]: 1343/5300 cut-off events. [2022-07-21 08:59:30,396 INFO L130 PetriNetUnfolder]: For 30062/30137 co-relation queries the response was YES. [2022-07-21 08:59:30,453 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15952 conditions, 5300 events. 1343/5300 cut-off events. For 30062/30137 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 56504 event pairs, 674 based on Foata normal form. 20/4915 useless extension candidates. Maximal degree in co-relation 15848. Up to 1375 conditions per place. [2022-07-21 08:59:30,477 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 200 selfloop transitions, 96 changer transitions 13/750 dead transitions. [2022-07-21 08:59:30,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 750 transitions, 4804 flow [2022-07-21 08:59:30,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 08:59:30,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 08:59:30,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7991 transitions. [2022-07-21 08:59:30,484 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7734223770809137 [2022-07-21 08:59:30,484 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7991 transitions. [2022-07-21 08:59:30,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7991 transitions. [2022-07-21 08:59:30,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:30,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7991 transitions. [2022-07-21 08:59:30,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 443.94444444444446) internal successors, (7991), 18 states have internal predecessors, (7991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:30,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:30,503 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:30,503 INFO L186 Difference]: Start difference. First operand has 711 places, 684 transitions, 3381 flow. Second operand 18 states and 7991 transitions. [2022-07-21 08:59:30,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 750 transitions, 4804 flow [2022-07-21 08:59:30,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 724 places, 750 transitions, 4408 flow, removed 198 selfloop flow, removed 2 redundant places. [2022-07-21 08:59:30,752 INFO L242 Difference]: Finished difference. Result has 732 places, 705 transitions, 3756 flow [2022-07-21 08:59:30,756 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=3179, PETRI_DIFFERENCE_MINUEND_PLACES=707, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3756, PETRI_PLACES=732, PETRI_TRANSITIONS=705} [2022-07-21 08:59:30,757 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 209 predicate places. [2022-07-21 08:59:30,757 INFO L495 AbstractCegarLoop]: Abstraction has has 732 places, 705 transitions, 3756 flow [2022-07-21 08:59:30,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:30,758 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:30,758 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:30,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:59:30,759 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:30,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:30,759 INFO L85 PathProgramCache]: Analyzing trace with hash 211709358, now seen corresponding path program 7 times [2022-07-21 08:59:30,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:30,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477139489] [2022-07-21 08:59:30,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:30,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:30,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 08:59:30,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:30,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477139489] [2022-07-21 08:59:30,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477139489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:30,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:30,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:59:30,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207030909] [2022-07-21 08:59:30,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:30,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:59:30,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:30,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:59:30,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:59:30,983 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-21 08:59:31,000 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 705 transitions, 3756 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:31,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:31,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-21 08:59:31,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:32,887 INFO L129 PetriNetUnfolder]: 1412/5623 cut-off events. [2022-07-21 08:59:32,888 INFO L130 PetriNetUnfolder]: For 25365/25461 co-relation queries the response was YES. [2022-07-21 08:59:32,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16622 conditions, 5623 events. 1412/5623 cut-off events. For 25365/25461 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 60823 event pairs, 770 based on Foata normal form. 37/5232 useless extension candidates. Maximal degree in co-relation 16511. Up to 1425 conditions per place. [2022-07-21 08:59:32,987 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 210 selfloop transitions, 100 changer transitions 12/763 dead transitions. [2022-07-21 08:59:32,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 746 places, 763 transitions, 5057 flow [2022-07-21 08:59:32,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 08:59:32,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 08:59:32,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7554 transitions. [2022-07-21 08:59:32,995 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.774134043861447 [2022-07-21 08:59:32,995 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7554 transitions. [2022-07-21 08:59:32,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7554 transitions. [2022-07-21 08:59:32,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:32,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7554 transitions. [2022-07-21 08:59:33,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 444.3529411764706) internal successors, (7554), 17 states have internal predecessors, (7554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:33,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:33,011 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:33,011 INFO L186 Difference]: Start difference. First operand has 732 places, 705 transitions, 3756 flow. Second operand 17 states and 7554 transitions. [2022-07-21 08:59:33,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 746 places, 763 transitions, 5057 flow [2022-07-21 08:59:33,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 744 places, 763 transitions, 4915 flow, removed 71 selfloop flow, removed 2 redundant places. [2022-07-21 08:59:33,169 INFO L242 Difference]: Finished difference. Result has 753 places, 726 transitions, 4275 flow [2022-07-21 08:59:33,170 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=3648, PETRI_DIFFERENCE_MINUEND_PLACES=728, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4275, PETRI_PLACES=753, PETRI_TRANSITIONS=726} [2022-07-21 08:59:33,170 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 230 predicate places. [2022-07-21 08:59:33,170 INFO L495 AbstractCegarLoop]: Abstraction has has 753 places, 726 transitions, 4275 flow [2022-07-21 08:59:33,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:33,171 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:33,171 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:33,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:59:33,171 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:33,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:33,172 INFO L85 PathProgramCache]: Analyzing trace with hash -825348756, now seen corresponding path program 8 times [2022-07-21 08:59:33,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:33,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523481437] [2022-07-21 08:59:33,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:33,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:33,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 08:59:33,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:33,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523481437] [2022-07-21 08:59:33,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523481437] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:33,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:33,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:59:33,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319291797] [2022-07-21 08:59:33,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:33,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:59:33,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:33,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:59:33,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:59:33,487 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-21 08:59:33,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 753 places, 726 transitions, 4275 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:33,490 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:33,490 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-21 08:59:33,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:35,481 INFO L129 PetriNetUnfolder]: 1417/5665 cut-off events. [2022-07-21 08:59:35,482 INFO L130 PetriNetUnfolder]: For 27882/28023 co-relation queries the response was YES. [2022-07-21 08:59:35,651 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17282 conditions, 5665 events. 1417/5665 cut-off events. For 27882/28023 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 61804 event pairs, 690 based on Foata normal form. 62/5298 useless extension candidates. Maximal degree in co-relation 17163. Up to 1460 conditions per place. [2022-07-21 08:59:35,678 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 211 selfloop transitions, 107 changer transitions 15/774 dead transitions. [2022-07-21 08:59:35,678 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 766 places, 774 transitions, 5363 flow [2022-07-21 08:59:35,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:59:35,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 08:59:35,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 7114 transitions. [2022-07-21 08:59:35,687 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7746080139372822 [2022-07-21 08:59:35,687 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 7114 transitions. [2022-07-21 08:59:35,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 7114 transitions. [2022-07-21 08:59:35,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:35,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 7114 transitions. [2022-07-21 08:59:35,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 444.625) internal successors, (7114), 16 states have internal predecessors, (7114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:35,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 574.0) internal successors, (9758), 17 states have internal predecessors, (9758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:35,704 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 574.0) internal successors, (9758), 17 states have internal predecessors, (9758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:35,704 INFO L186 Difference]: Start difference. First operand has 753 places, 726 transitions, 4275 flow. Second operand 16 states and 7114 transitions. [2022-07-21 08:59:35,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 766 places, 774 transitions, 5363 flow [2022-07-21 08:59:35,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 764 places, 774 transitions, 5243 flow, removed 60 selfloop flow, removed 2 redundant places. [2022-07-21 08:59:35,897 INFO L242 Difference]: Finished difference. Result has 771 places, 734 transitions, 4563 flow [2022-07-21 08:59:35,898 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=4159, PETRI_DIFFERENCE_MINUEND_PLACES=749, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4563, PETRI_PLACES=771, PETRI_TRANSITIONS=734} [2022-07-21 08:59:35,898 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 248 predicate places. [2022-07-21 08:59:35,899 INFO L495 AbstractCegarLoop]: Abstraction has has 771 places, 734 transitions, 4563 flow [2022-07-21 08:59:35,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:35,899 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:35,900 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:35,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:59:35,900 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:35,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:35,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1591793836, now seen corresponding path program 9 times [2022-07-21 08:59:35,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:35,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118337959] [2022-07-21 08:59:35,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:35,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:36,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 08:59:36,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:36,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118337959] [2022-07-21 08:59:36,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118337959] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:36,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:36,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:59:36,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235973782] [2022-07-21 08:59:36,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:36,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:59:36,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:36,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:59:36,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:59:36,133 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-21 08:59:36,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 771 places, 734 transitions, 4563 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:36,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:36,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-21 08:59:36,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:38,414 INFO L129 PetriNetUnfolder]: 1462/5928 cut-off events. [2022-07-21 08:59:38,414 INFO L130 PetriNetUnfolder]: For 31510/31651 co-relation queries the response was YES. [2022-07-21 08:59:38,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18529 conditions, 5928 events. 1462/5928 cut-off events. For 31510/31651 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 65640 event pairs, 766 based on Foata normal form. 55/5550 useless extension candidates. Maximal degree in co-relation 18404. Up to 1388 conditions per place. [2022-07-21 08:59:38,512 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 244 selfloop transitions, 98 changer transitions 19/802 dead transitions. [2022-07-21 08:59:38,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 789 places, 802 transitions, 6129 flow [2022-07-21 08:59:38,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 08:59:38,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 08:59:38,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 9310 transitions. [2022-07-21 08:59:38,519 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7723577235772358 [2022-07-21 08:59:38,519 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 9310 transitions. [2022-07-21 08:59:38,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 9310 transitions. [2022-07-21 08:59:38,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:38,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 9310 transitions. [2022-07-21 08:59:38,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 443.3333333333333) internal successors, (9310), 21 states have internal predecessors, (9310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:38,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 574.0) internal successors, (12628), 22 states have internal predecessors, (12628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:38,538 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 574.0) internal successors, (12628), 22 states have internal predecessors, (12628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:38,538 INFO L186 Difference]: Start difference. First operand has 771 places, 734 transitions, 4563 flow. Second operand 21 states and 9310 transitions. [2022-07-21 08:59:38,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 789 places, 802 transitions, 6129 flow [2022-07-21 08:59:38,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 786 places, 802 transitions, 6016 flow, removed 34 selfloop flow, removed 3 redundant places. [2022-07-21 08:59:38,740 INFO L242 Difference]: Finished difference. Result has 800 places, 758 transitions, 5280 flow [2022-07-21 08:59:38,740 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=4482, PETRI_DIFFERENCE_MINUEND_PLACES=766, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=650, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5280, PETRI_PLACES=800, PETRI_TRANSITIONS=758} [2022-07-21 08:59:38,741 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 277 predicate places. [2022-07-21 08:59:38,741 INFO L495 AbstractCegarLoop]: Abstraction has has 800 places, 758 transitions, 5280 flow [2022-07-21 08:59:38,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:38,742 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:38,742 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:38,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:59:38,743 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:38,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:38,743 INFO L85 PathProgramCache]: Analyzing trace with hash 146240648, now seen corresponding path program 10 times [2022-07-21 08:59:38,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:38,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877453772] [2022-07-21 08:59:38,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:38,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:38,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 08:59:38,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:38,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877453772] [2022-07-21 08:59:38,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877453772] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:38,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:38,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:59:38,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975811271] [2022-07-21 08:59:38,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:38,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:59:38,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:38,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:59:38,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:59:38,932 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-21 08:59:38,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 800 places, 758 transitions, 5280 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:38,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:38,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-21 08:59:38,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:41,178 INFO L129 PetriNetUnfolder]: 1486/6033 cut-off events. [2022-07-21 08:59:41,178 INFO L130 PetriNetUnfolder]: For 36819/36978 co-relation queries the response was YES. [2022-07-21 08:59:41,415 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19668 conditions, 6033 events. 1486/6033 cut-off events. For 36819/36978 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 67344 event pairs, 782 based on Foata normal form. 64/5645 useless extension candidates. Maximal degree in co-relation 19531. Up to 1526 conditions per place. [2022-07-21 08:59:41,435 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 226 selfloop transitions, 120 changer transitions 16/803 dead transitions. [2022-07-21 08:59:41,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 815 places, 803 transitions, 6521 flow [2022-07-21 08:59:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 08:59:41,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 08:59:41,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7990 transitions. [2022-07-21 08:59:41,439 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7733255903987611 [2022-07-21 08:59:41,439 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7990 transitions. [2022-07-21 08:59:41,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7990 transitions. [2022-07-21 08:59:41,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:41,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7990 transitions. [2022-07-21 08:59:41,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 443.8888888888889) internal successors, (7990), 18 states have internal predecessors, (7990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:41,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:41,455 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:41,456 INFO L186 Difference]: Start difference. First operand has 800 places, 758 transitions, 5280 flow. Second operand 18 states and 7990 transitions. [2022-07-21 08:59:41,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 815 places, 803 transitions, 6521 flow [2022-07-21 08:59:41,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 813 places, 803 transitions, 6287 flow, removed 117 selfloop flow, removed 2 redundant places. [2022-07-21 08:59:41,664 INFO L242 Difference]: Finished difference. Result has 821 places, 772 transitions, 5660 flow [2022-07-21 08:59:41,665 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=5092, PETRI_DIFFERENCE_MINUEND_PLACES=796, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5660, PETRI_PLACES=821, PETRI_TRANSITIONS=772} [2022-07-21 08:59:41,665 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 298 predicate places. [2022-07-21 08:59:41,665 INFO L495 AbstractCegarLoop]: Abstraction has has 821 places, 772 transitions, 5660 flow [2022-07-21 08:59:41,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:41,666 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:41,666 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:41,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:59:41,666 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:41,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:41,666 INFO L85 PathProgramCache]: Analyzing trace with hash -816679436, now seen corresponding path program 11 times [2022-07-21 08:59:41,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:41,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639382248] [2022-07-21 08:59:41,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:41,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:41,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 08:59:41,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:41,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639382248] [2022-07-21 08:59:41,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639382248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:41,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:41,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:59:41,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143833778] [2022-07-21 08:59:41,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:41,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:59:41,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:41,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:59:41,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:59:41,882 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-21 08:59:41,884 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 821 places, 772 transitions, 5660 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:41,884 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:41,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-21 08:59:41,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:44,024 INFO L129 PetriNetUnfolder]: 1517/6141 cut-off events. [2022-07-21 08:59:44,025 INFO L130 PetriNetUnfolder]: For 34891/35029 co-relation queries the response was YES. [2022-07-21 08:59:44,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20347 conditions, 6141 events. 1517/6141 cut-off events. For 34891/35029 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 69250 event pairs, 689 based on Foata normal form. 37/5716 useless extension candidates. Maximal degree in co-relation 20203. Up to 1559 conditions per place. [2022-07-21 08:59:44,144 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 256 selfloop transitions, 113 changer transitions 11/821 dead transitions. [2022-07-21 08:59:44,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 835 places, 821 transitions, 7049 flow [2022-07-21 08:59:44,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 08:59:44,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 08:59:44,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7554 transitions. [2022-07-21 08:59:44,149 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.774134043861447 [2022-07-21 08:59:44,149 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7554 transitions. [2022-07-21 08:59:44,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7554 transitions. [2022-07-21 08:59:44,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:44,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7554 transitions. [2022-07-21 08:59:44,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 444.3529411764706) internal successors, (7554), 17 states have internal predecessors, (7554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:44,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:44,164 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:44,165 INFO L186 Difference]: Start difference. First operand has 821 places, 772 transitions, 5660 flow. Second operand 17 states and 7554 transitions. [2022-07-21 08:59:44,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 835 places, 821 transitions, 7049 flow [2022-07-21 08:59:44,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 831 places, 821 transitions, 6882 flow, removed 34 selfloop flow, removed 4 redundant places. [2022-07-21 08:59:44,409 INFO L242 Difference]: Finished difference. Result has 839 places, 790 transitions, 6199 flow [2022-07-21 08:59:44,410 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=5505, PETRI_DIFFERENCE_MINUEND_PLACES=815, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6199, PETRI_PLACES=839, PETRI_TRANSITIONS=790} [2022-07-21 08:59:44,411 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 316 predicate places. [2022-07-21 08:59:44,411 INFO L495 AbstractCegarLoop]: Abstraction has has 839 places, 790 transitions, 6199 flow [2022-07-21 08:59:44,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:44,412 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:44,412 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:44,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 08:59:44,413 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:44,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:44,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1282102000, now seen corresponding path program 12 times [2022-07-21 08:59:44,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:44,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335429137] [2022-07-21 08:59:44,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:44,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:44,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 08:59:44,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:44,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335429137] [2022-07-21 08:59:44,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335429137] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:44,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:44,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:59:44,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032521248] [2022-07-21 08:59:44,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:44,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:59:44,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:44,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:59:44,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:59:44,775 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-21 08:59:44,778 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 839 places, 790 transitions, 6199 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:44,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:44,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-21 08:59:44,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:47,263 INFO L129 PetriNetUnfolder]: 1516/6203 cut-off events. [2022-07-21 08:59:47,263 INFO L130 PetriNetUnfolder]: For 35862/36024 co-relation queries the response was YES. [2022-07-21 08:59:47,349 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20672 conditions, 6203 events. 1516/6203 cut-off events. For 35862/36024 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 70226 event pairs, 677 based on Foata normal form. 46/5792 useless extension candidates. Maximal degree in co-relation 20522. Up to 1546 conditions per place. [2022-07-21 08:59:47,370 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 254 selfloop transitions, 116 changer transitions 20/831 dead transitions. [2022-07-21 08:59:47,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 854 places, 831 transitions, 7390 flow [2022-07-21 08:59:47,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 08:59:47,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 08:59:47,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7994 transitions. [2022-07-21 08:59:47,374 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7737127371273713 [2022-07-21 08:59:47,374 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7994 transitions. [2022-07-21 08:59:47,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7994 transitions. [2022-07-21 08:59:47,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:47,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7994 transitions. [2022-07-21 08:59:47,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 444.1111111111111) internal successors, (7994), 18 states have internal predecessors, (7994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:47,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:47,388 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:47,388 INFO L186 Difference]: Start difference. First operand has 839 places, 790 transitions, 6199 flow. Second operand 18 states and 7994 transitions. [2022-07-21 08:59:47,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 854 places, 831 transitions, 7390 flow [2022-07-21 08:59:47,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 851 places, 831 transitions, 7174 flow, removed 83 selfloop flow, removed 3 redundant places. [2022-07-21 08:59:47,615 INFO L242 Difference]: Finished difference. Result has 858 places, 799 transitions, 6489 flow [2022-07-21 08:59:47,616 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=6015, PETRI_DIFFERENCE_MINUEND_PLACES=834, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=790, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=677, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6489, PETRI_PLACES=858, PETRI_TRANSITIONS=799} [2022-07-21 08:59:47,616 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 335 predicate places. [2022-07-21 08:59:47,617 INFO L495 AbstractCegarLoop]: Abstraction has has 858 places, 799 transitions, 6489 flow [2022-07-21 08:59:47,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:47,617 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:47,618 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:47,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 08:59:47,618 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:47,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:47,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1009102832, now seen corresponding path program 13 times [2022-07-21 08:59:47,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:47,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552387999] [2022-07-21 08:59:47,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:47,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:47,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 08:59:47,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:47,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552387999] [2022-07-21 08:59:47,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552387999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:47,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:47,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:59:47,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314021112] [2022-07-21 08:59:47,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:47,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:59:47,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:47,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:59:47,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:59:47,816 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-21 08:59:47,818 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 858 places, 799 transitions, 6489 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:47,818 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:47,819 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-21 08:59:47,819 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:50,424 INFO L129 PetriNetUnfolder]: 1639/6436 cut-off events. [2022-07-21 08:59:50,424 INFO L130 PetriNetUnfolder]: For 45467/45721 co-relation queries the response was YES. [2022-07-21 08:59:50,553 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22418 conditions, 6436 events. 1639/6436 cut-off events. For 45467/45721 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 72940 event pairs, 649 based on Foata normal form. 32/6002 useless extension candidates. Maximal degree in co-relation 22263. Up to 1441 conditions per place. [2022-07-21 08:59:50,581 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 279 selfloop transitions, 143 changer transitions 19/882 dead transitions. [2022-07-21 08:59:50,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 877 places, 882 transitions, 8344 flow [2022-07-21 08:59:50,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 08:59:50,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 08:59:50,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 9745 transitions. [2022-07-21 08:59:50,587 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7716978143807413 [2022-07-21 08:59:50,587 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 9745 transitions. [2022-07-21 08:59:50,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 9745 transitions. [2022-07-21 08:59:50,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:50,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 9745 transitions. [2022-07-21 08:59:50,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 442.95454545454544) internal successors, (9745), 22 states have internal predecessors, (9745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:50,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 574.0) internal successors, (13202), 23 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:50,610 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 574.0) internal successors, (13202), 23 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:50,611 INFO L186 Difference]: Start difference. First operand has 858 places, 799 transitions, 6489 flow. Second operand 22 states and 9745 transitions. [2022-07-21 08:59:50,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 877 places, 882 transitions, 8344 flow [2022-07-21 08:59:51,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 874 places, 882 transitions, 8172 flow, removed 55 selfloop flow, removed 3 redundant places. [2022-07-21 08:59:51,140 INFO L242 Difference]: Finished difference. Result has 888 places, 831 transitions, 7363 flow [2022-07-21 08:59:51,141 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=6332, PETRI_DIFFERENCE_MINUEND_PLACES=853, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=799, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=677, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7363, PETRI_PLACES=888, PETRI_TRANSITIONS=831} [2022-07-21 08:59:51,141 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 365 predicate places. [2022-07-21 08:59:51,142 INFO L495 AbstractCegarLoop]: Abstraction has has 888 places, 831 transitions, 7363 flow [2022-07-21 08:59:51,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:51,142 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:51,142 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:51,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 08:59:51,143 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:51,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:51,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1029494804, now seen corresponding path program 14 times [2022-07-21 08:59:51,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:51,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999559549] [2022-07-21 08:59:51,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:51,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:51,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 08:59:51,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:51,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999559549] [2022-07-21 08:59:51,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999559549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:51,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:51,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:59:51,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475555157] [2022-07-21 08:59:51,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:51,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:59:51,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:51,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:59:51,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:59:51,388 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-21 08:59:51,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 888 places, 831 transitions, 7363 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:51,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:51,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-21 08:59:51,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:54,152 INFO L129 PetriNetUnfolder]: 1682/6638 cut-off events. [2022-07-21 08:59:54,153 INFO L130 PetriNetUnfolder]: For 52580/52858 co-relation queries the response was YES. [2022-07-21 08:59:54,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24171 conditions, 6638 events. 1682/6638 cut-off events. For 52580/52858 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 76240 event pairs, 663 based on Foata normal form. 23/6169 useless extension candidates. Maximal degree in co-relation 24003. Up to 1463 conditions per place. [2022-07-21 08:59:54,287 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 332 selfloop transitions, 105 changer transitions 17/895 dead transitions. [2022-07-21 08:59:54,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 906 places, 895 transitions, 9138 flow [2022-07-21 08:59:54,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 08:59:54,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 08:59:54,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 9307 transitions. [2022-07-21 08:59:54,293 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7721088435374149 [2022-07-21 08:59:54,293 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 9307 transitions. [2022-07-21 08:59:54,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 9307 transitions. [2022-07-21 08:59:54,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:54,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 9307 transitions. [2022-07-21 08:59:54,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 443.1904761904762) internal successors, (9307), 21 states have internal predecessors, (9307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:54,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 574.0) internal successors, (12628), 22 states have internal predecessors, (12628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:54,307 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 574.0) internal successors, (12628), 22 states have internal predecessors, (12628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:54,307 INFO L186 Difference]: Start difference. First operand has 888 places, 831 transitions, 7363 flow. Second operand 21 states and 9307 transitions. [2022-07-21 08:59:54,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 906 places, 895 transitions, 9138 flow [2022-07-21 08:59:54,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 904 places, 895 transitions, 8964 flow, removed 87 selfloop flow, removed 2 redundant places. [2022-07-21 08:59:54,653 INFO L242 Difference]: Finished difference. Result has 918 places, 855 transitions, 8047 flow [2022-07-21 08:59:54,654 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=7203, PETRI_DIFFERENCE_MINUEND_PLACES=884, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=741, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8047, PETRI_PLACES=918, PETRI_TRANSITIONS=855} [2022-07-21 08:59:54,654 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 395 predicate places. [2022-07-21 08:59:54,654 INFO L495 AbstractCegarLoop]: Abstraction has has 918 places, 855 transitions, 8047 flow [2022-07-21 08:59:54,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:54,655 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:54,655 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:54,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 08:59:54,655 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:54,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:54,656 INFO L85 PathProgramCache]: Analyzing trace with hash -693912916, now seen corresponding path program 15 times [2022-07-21 08:59:54,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:54,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917191932] [2022-07-21 08:59:54,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:54,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:54,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 08:59:54,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:54,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917191932] [2022-07-21 08:59:54,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917191932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:54,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:54,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:59:54,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024046657] [2022-07-21 08:59:54,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:54,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:59:54,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:54,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:59:54,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:59:54,851 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-21 08:59:54,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 918 places, 855 transitions, 8047 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:54,853 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:54,853 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-21 08:59:54,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:58,081 INFO L129 PetriNetUnfolder]: 1715/6786 cut-off events. [2022-07-21 08:59:58,082 INFO L130 PetriNetUnfolder]: For 57337/57659 co-relation queries the response was YES. [2022-07-21 08:59:58,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25324 conditions, 6786 events. 1715/6786 cut-off events. For 57337/57659 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 78426 event pairs, 660 based on Foata normal form. 59/6356 useless extension candidates. Maximal degree in co-relation 25143. Up to 1529 conditions per place. [2022-07-21 08:59:58,219 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 300 selfloop transitions, 161 changer transitions 14/916 dead transitions. [2022-07-21 08:59:58,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 933 places, 916 transitions, 9717 flow [2022-07-21 08:59:58,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 08:59:58,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 08:59:58,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7991 transitions. [2022-07-21 08:59:58,224 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7734223770809137 [2022-07-21 08:59:58,225 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7991 transitions. [2022-07-21 08:59:58,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7991 transitions. [2022-07-21 08:59:58,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:58,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7991 transitions. [2022-07-21 08:59:58,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 443.94444444444446) internal successors, (7991), 18 states have internal predecessors, (7991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:58,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:58,243 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:58,243 INFO L186 Difference]: Start difference. First operand has 918 places, 855 transitions, 8047 flow. Second operand 18 states and 7991 transitions. [2022-07-21 08:59:58,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 933 places, 916 transitions, 9717 flow [2022-07-21 08:59:58,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 931 places, 916 transitions, 9537 flow, removed 90 selfloop flow, removed 2 redundant places. [2022-07-21 08:59:58,626 INFO L242 Difference]: Finished difference. Result has 939 places, 876 transitions, 8709 flow [2022-07-21 08:59:58,627 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=7869, PETRI_DIFFERENCE_MINUEND_PLACES=914, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=855, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=708, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8709, PETRI_PLACES=939, PETRI_TRANSITIONS=876} [2022-07-21 08:59:58,628 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 416 predicate places. [2022-07-21 08:59:58,628 INFO L495 AbstractCegarLoop]: Abstraction has has 939 places, 876 transitions, 8709 flow [2022-07-21 08:59:58,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:58,629 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:58,629 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:58,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 08:59:58,629 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:58,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:58,630 INFO L85 PathProgramCache]: Analyzing trace with hash -738031714, now seen corresponding path program 16 times [2022-07-21 08:59:58,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:58,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044336211] [2022-07-21 08:59:58,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:58,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:58,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 08:59:58,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:58,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044336211] [2022-07-21 08:59:58,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044336211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:58,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:58,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:59:58,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717826375] [2022-07-21 08:59:58,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:58,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:59:58,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:58,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:59:58,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:59:58,821 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-21 08:59:58,824 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 939 places, 876 transitions, 8709 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:58,824 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:58,824 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-21 08:59:58,824 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:01,893 INFO L129 PetriNetUnfolder]: 1780/7381 cut-off events. [2022-07-21 09:00:01,893 INFO L130 PetriNetUnfolder]: For 64193/64518 co-relation queries the response was YES. [2022-07-21 09:00:02,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27447 conditions, 7381 events. 1780/7381 cut-off events. For 64193/64518 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 87250 event pairs, 828 based on Foata normal form. 50/6911 useless extension candidates. Maximal degree in co-relation 27259. Up to 1565 conditions per place. [2022-07-21 09:00:02,164 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 342 selfloop transitions, 134 changer transitions 12/929 dead transitions. [2022-07-21 09:00:02,165 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 953 places, 929 transitions, 10419 flow [2022-07-21 09:00:02,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:00:02,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 09:00:02,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7553 transitions. [2022-07-21 09:00:02,173 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7740315638450502 [2022-07-21 09:00:02,173 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7553 transitions. [2022-07-21 09:00:02,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7553 transitions. [2022-07-21 09:00:02,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:02,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7553 transitions. [2022-07-21 09:00:02,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 444.29411764705884) internal successors, (7553), 17 states have internal predecessors, (7553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:02,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:02,195 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:02,195 INFO L186 Difference]: Start difference. First operand has 939 places, 876 transitions, 8709 flow. Second operand 17 states and 7553 transitions. [2022-07-21 09:00:02,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 953 places, 929 transitions, 10419 flow