./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/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 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 01:16:42,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 01:16:42,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 01:16:42,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 01:16:42,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 01:16:42,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 01:16:42,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 01:16:42,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 01:16:42,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 01:16:42,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 01:16:42,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 01:16:42,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 01:16:42,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 01:16:42,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 01:16:42,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 01:16:42,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 01:16:42,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 01:16:42,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 01:16:42,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 01:16:42,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 01:16:42,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 01:16:42,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 01:16:42,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 01:16:42,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 01:16:42,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 01:16:42,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 01:16:42,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 01:16:42,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 01:16:42,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 01:16:42,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 01:16:42,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 01:16:42,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 01:16:42,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 01:16:42,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 01:16:42,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 01:16:42,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 01:16:42,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 01:16:42,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 01:16:42,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 01:16:42,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 01:16:42,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 01:16:42,562 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 01:16:42,603 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 01:16:42,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 01:16:42,605 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 01:16:42,605 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 01:16:42,606 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 01:16:42,606 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 01:16:42,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 01:16:42,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 01:16:42,607 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 01:16:42,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 01:16:42,608 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 01:16:42,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 01:16:42,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 01:16:42,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 01:16:42,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 01:16:42,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 01:16:42,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 01:16:42,609 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 01:16:42,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 01:16:42,610 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 01:16:42,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 01:16:42,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 01:16:42,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 01:16:42,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 01:16:42,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:16:42,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 01:16:42,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 01:16:42,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 01:16:42,611 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 01:16:42,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 01:16:42,612 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 01:16:42,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 01:16:42,612 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 01:16:42,612 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 01:16:42,612 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 01:16:42,613 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 01:16:42,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 01:16:42,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 01:16:42,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 01:16:42,945 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 01:16:42,946 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 01:16:42,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2023-08-31 01:16:44,264 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 01:16:44,513 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 01:16:44,515 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2023-08-31 01:16:44,532 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/803596775/8fb4ca2cd7c84b47b4b6c307dab81356/FLAGe098e5adb [2023-08-31 01:16:44,551 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/803596775/8fb4ca2cd7c84b47b4b6c307dab81356 [2023-08-31 01:16:44,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 01:16:44,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 01:16:44,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 01:16:44,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 01:16:44,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 01:16:44,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:16:44" (1/1) ... [2023-08-31 01:16:44,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6246f845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:44, skipping insertion in model container [2023-08-31 01:16:44,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:16:44" (1/1) ... [2023-08-31 01:16:44,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 01:16:44,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 01:16:44,779 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c[3996,4009] [2023-08-31 01:16:44,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:16:44,824 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 01:16:44,860 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c[3996,4009] [2023-08-31 01:16:44,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:16:44,903 INFO L208 MainTranslator]: Completed translation [2023-08-31 01:16:44,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:44 WrapperNode [2023-08-31 01:16:44,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 01:16:44,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 01:16:44,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 01:16:44,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 01:16:44,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:44" (1/1) ... [2023-08-31 01:16:44,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:44" (1/1) ... [2023-08-31 01:16:44,971 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 431 [2023-08-31 01:16:44,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 01:16:44,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 01:16:44,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 01:16:44,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 01:16:44,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:44" (1/1) ... [2023-08-31 01:16:44,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:44" (1/1) ... [2023-08-31 01:16:45,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:44" (1/1) ... [2023-08-31 01:16:45,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:44" (1/1) ... [2023-08-31 01:16:45,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:44" (1/1) ... [2023-08-31 01:16:45,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:44" (1/1) ... [2023-08-31 01:16:45,053 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:44" (1/1) ... [2023-08-31 01:16:45,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:44" (1/1) ... [2023-08-31 01:16:45,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 01:16:45,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 01:16:45,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 01:16:45,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 01:16:45,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:44" (1/1) ... [2023-08-31 01:16:45,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:16:45,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:16:45,113 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) [2023-08-31 01:16:45,123 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 [2023-08-31 01:16:45,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 01:16:45,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 01:16:45,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 01:16:45,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 01:16:45,142 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 01:16:45,142 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 01:16:45,142 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 01:16:45,142 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 01:16:45,142 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 01:16:45,142 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 01:16:45,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 01:16:45,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 01:16:45,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 01:16:45,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 01:16:45,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 01:16:45,145 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 01:16:45,247 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 01:16:45,249 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 01:16:45,899 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 01:16:45,909 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 01:16:45,910 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-31 01:16:45,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:16:45 BoogieIcfgContainer [2023-08-31 01:16:45,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 01:16:45,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 01:16:45,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 01:16:45,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 01:16:45,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 01:16:44" (1/3) ... [2023-08-31 01:16:45,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55813e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:16:45, skipping insertion in model container [2023-08-31 01:16:45,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:44" (2/3) ... [2023-08-31 01:16:45,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55813e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:16:45, skipping insertion in model container [2023-08-31 01:16:45,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:16:45" (3/3) ... [2023-08-31 01:16:45,920 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2023-08-31 01:16:45,927 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 01:16:45,935 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 01:16:45,936 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 01:16:45,936 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 01:16:46,042 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 01:16:46,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 470 places, 501 transitions, 1026 flow [2023-08-31 01:16:46,310 INFO L130 PetriNetUnfolder]: 41/498 cut-off events. [2023-08-31 01:16:46,311 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:16:46,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 498 events. 41/498 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 643 event pairs, 0 based on Foata normal form. 0/456 useless extension candidates. Maximal degree in co-relation 424. Up to 2 conditions per place. [2023-08-31 01:16:46,320 INFO L82 GeneralOperation]: Start removeDead. Operand has 470 places, 501 transitions, 1026 flow [2023-08-31 01:16:46,328 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 457 places, 488 transitions, 994 flow [2023-08-31 01:16:46,332 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 01:16:46,344 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 457 places, 488 transitions, 994 flow [2023-08-31 01:16:46,348 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 457 places, 488 transitions, 994 flow [2023-08-31 01:16:46,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 457 places, 488 transitions, 994 flow [2023-08-31 01:16:46,454 INFO L130 PetriNetUnfolder]: 41/488 cut-off events. [2023-08-31 01:16:46,454 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:16:46,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 488 events. 41/488 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 642 event pairs, 0 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 424. Up to 2 conditions per place. [2023-08-31 01:16:46,467 INFO L119 LiptonReduction]: Number of co-enabled transitions 17280 [2023-08-31 01:17:02,415 INFO L134 LiptonReduction]: Checked pairs total: 21051 [2023-08-31 01:17:02,415 INFO L136 LiptonReduction]: Total number of compositions: 563 [2023-08-31 01:17:02,428 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 01:17:02,433 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@79b7294e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 01:17:02,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-31 01:17:02,444 INFO L130 PetriNetUnfolder]: 10/41 cut-off events. [2023-08-31 01:17:02,444 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:17:02,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:02,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:02,446 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)] === [2023-08-31 01:17:02,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:02,450 INFO L85 PathProgramCache]: Analyzing trace with hash -496890906, now seen corresponding path program 1 times [2023-08-31 01:17:02,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:02,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608054956] [2023-08-31 01:17:02,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:02,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:02,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:17:02,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:02,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608054956] [2023-08-31 01:17:02,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608054956] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:02,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:02,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 01:17:02,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271148365] [2023-08-31 01:17:02,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:02,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 01:17:02,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:02,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 01:17:02,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 01:17:02,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 465 out of 1064 [2023-08-31 01:17:02,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 477.5) internal successors, (955), 2 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:02,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:02,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 465 of 1064 [2023-08-31 01:17:02,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:03,126 INFO L130 PetriNetUnfolder]: 699/1048 cut-off events. [2023-08-31 01:17:03,126 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-08-31 01:17:03,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 1048 events. 699/1048 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3691 event pairs, 557 based on Foata normal form. 0/906 useless extension candidates. Maximal degree in co-relation 2016. Up to 1049 conditions per place. [2023-08-31 01:17:03,132 INFO L137 encePairwiseOnDemand]: 1063/1064 looper letters, 41 selfloop transitions, 0 changer transitions 0/41 dead transitions. [2023-08-31 01:17:03,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 182 flow [2023-08-31 01:17:03,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 01:17:03,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 01:17:03,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 972 transitions. [2023-08-31 01:17:03,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567669172932331 [2023-08-31 01:17:03,149 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 972 transitions. [2023-08-31 01:17:03,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 972 transitions. [2023-08-31 01:17:03,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:03,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 972 transitions. [2023-08-31 01:17:03,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 486.0) internal successors, (972), 2 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:03,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1064.0) internal successors, (3192), 3 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:03,169 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1064.0) internal successors, (3192), 3 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:03,171 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 102 flow. Second operand 2 states and 972 transitions. [2023-08-31 01:17:03,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 182 flow [2023-08-31 01:17:03,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 170 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 01:17:03,178 INFO L231 Difference]: Finished difference. Result has 37 places, 41 transitions, 88 flow [2023-08-31 01:17:03,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=37, PETRI_TRANSITIONS=41} [2023-08-31 01:17:03,183 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-08-31 01:17:03,183 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 41 transitions, 88 flow [2023-08-31 01:17:03,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 477.5) internal successors, (955), 2 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:03,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:03,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:03,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 01:17:03,186 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)] === [2023-08-31 01:17:03,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:03,197 INFO L85 PathProgramCache]: Analyzing trace with hash 2005961306, now seen corresponding path program 1 times [2023-08-31 01:17:03,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:03,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224691324] [2023-08-31 01:17:03,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:03,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:03,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:17:03,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:03,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224691324] [2023-08-31 01:17:03,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224691324] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:03,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:03,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:17:03,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638107032] [2023-08-31 01:17:03,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:03,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:17:03,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:03,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:17:03,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 01:17:03,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 458 out of 1064 [2023-08-31 01:17:03,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 41 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:03,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:03,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 458 of 1064 [2023-08-31 01:17:03,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:03,626 INFO L130 PetriNetUnfolder]: 789/1184 cut-off events. [2023-08-31 01:17:03,626 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-31 01:17:03,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 1184 events. 789/1184 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4309 event pairs, 473 based on Foata normal form. 0/1036 useless extension candidates. Maximal degree in co-relation 2432. Up to 867 conditions per place. [2023-08-31 01:17:03,648 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 52 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-08-31 01:17:03,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 55 transitions, 228 flow [2023-08-31 01:17:03,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:17:03,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:17:03,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1430 transitions. [2023-08-31 01:17:03,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44799498746867167 [2023-08-31 01:17:03,653 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1430 transitions. [2023-08-31 01:17:03,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1430 transitions. [2023-08-31 01:17:03,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:03,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1430 transitions. [2023-08-31 01:17:03,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 476.6666666666667) internal successors, (1430), 3 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:03,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:03,666 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:03,666 INFO L175 Difference]: Start difference. First operand has 37 places, 41 transitions, 88 flow. Second operand 3 states and 1430 transitions. [2023-08-31 01:17:03,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 55 transitions, 228 flow [2023-08-31 01:17:03,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 01:17:03,668 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 106 flow [2023-08-31 01:17:03,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2023-08-31 01:17:03,669 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-08-31 01:17:03,670 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 106 flow [2023-08-31 01:17:03,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:03,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:03,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:03,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 01:17:03,672 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)] === [2023-08-31 01:17:03,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:03,672 INFO L85 PathProgramCache]: Analyzing trace with hash -2002543410, now seen corresponding path program 1 times [2023-08-31 01:17:03,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:03,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138431816] [2023-08-31 01:17:03,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:03,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:03,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:17:03,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:03,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138431816] [2023-08-31 01:17:03,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138431816] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:03,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:03,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 01:17:03,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834725559] [2023-08-31 01:17:03,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:03,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:17:03,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:03,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:17:03,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 01:17:03,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 453 out of 1064 [2023-08-31 01:17:03,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 462.6666666666667) internal successors, (1388), 3 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:03,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:03,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 453 of 1064 [2023-08-31 01:17:03,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:04,211 INFO L130 PetriNetUnfolder]: 789/1185 cut-off events. [2023-08-31 01:17:04,211 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-08-31 01:17:04,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2807 conditions, 1185 events. 789/1185 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4292 event pairs, 641 based on Foata normal form. 0/1129 useless extension candidates. Maximal degree in co-relation 2802. Up to 1185 conditions per place. [2023-08-31 01:17:04,218 INFO L137 encePairwiseOnDemand]: 1061/1064 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-08-31 01:17:04,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 194 flow [2023-08-31 01:17:04,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:17:04,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:17:04,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1402 transitions. [2023-08-31 01:17:04,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392230576441103 [2023-08-31 01:17:04,222 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1402 transitions. [2023-08-31 01:17:04,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1402 transitions. [2023-08-31 01:17:04,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:04,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1402 transitions. [2023-08-31 01:17:04,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:04,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:04,233 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:04,234 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 106 flow. Second operand 3 states and 1402 transitions. [2023-08-31 01:17:04,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 194 flow [2023-08-31 01:17:04,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 01:17:04,238 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 112 flow [2023-08-31 01:17:04,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-08-31 01:17:04,239 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-31 01:17:04,239 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 112 flow [2023-08-31 01:17:04,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 462.6666666666667) internal successors, (1388), 3 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:04,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:04,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:04,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 01:17:04,241 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)] === [2023-08-31 01:17:04,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:04,242 INFO L85 PathProgramCache]: Analyzing trace with hash 283624533, now seen corresponding path program 1 times [2023-08-31 01:17:04,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:04,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714119366] [2023-08-31 01:17:04,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:04,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:04,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:17:04,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:04,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714119366] [2023-08-31 01:17:04,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714119366] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:04,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:04,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:17:04,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214602850] [2023-08-31 01:17:04,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:04,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:17:04,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:04,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:17:04,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:17:04,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1064 [2023-08-31 01:17:04,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 458.5) internal successors, (1834), 4 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:04,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:04,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1064 [2023-08-31 01:17:04,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:04,702 INFO L130 PetriNetUnfolder]: 789/1186 cut-off events. [2023-08-31 01:17:04,702 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 01:17:04,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 1186 events. 789/1186 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1084 useless extension candidates. Maximal degree in co-relation 2671. Up to 1185 conditions per place. [2023-08-31 01:17:04,707 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 41 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-08-31 01:17:04,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 202 flow [2023-08-31 01:17:04,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:17:04,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:17:04,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1847 transitions. [2023-08-31 01:17:04,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43397556390977443 [2023-08-31 01:17:04,714 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1847 transitions. [2023-08-31 01:17:04,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1847 transitions. [2023-08-31 01:17:04,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:04,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1847 transitions. [2023-08-31 01:17:04,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 461.75) internal successors, (1847), 4 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:04,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:04,728 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:04,728 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 112 flow. Second operand 4 states and 1847 transitions. [2023-08-31 01:17:04,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 202 flow [2023-08-31 01:17:04,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 198 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 01:17:04,732 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 122 flow [2023-08-31 01:17:04,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-08-31 01:17:04,734 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2023-08-31 01:17:04,734 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 122 flow [2023-08-31 01:17:04,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 458.5) internal successors, (1834), 4 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:04,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:04,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:04,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 01:17:04,736 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)] === [2023-08-31 01:17:04,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:04,737 INFO L85 PathProgramCache]: Analyzing trace with hash 194249792, now seen corresponding path program 1 times [2023-08-31 01:17:04,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:04,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951935018] [2023-08-31 01:17:04,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:04,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:17:04,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:04,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951935018] [2023-08-31 01:17:04,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951935018] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:04,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:04,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:17:04,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032733466] [2023-08-31 01:17:04,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:04,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:17:04,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:04,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:17:04,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:17:05,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1064 [2023-08-31 01:17:05,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 458.75) internal successors, (1835), 4 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:05,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:05,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1064 [2023-08-31 01:17:05,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:05,227 INFO L130 PetriNetUnfolder]: 789/1187 cut-off events. [2023-08-31 01:17:05,227 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-08-31 01:17:05,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2684 conditions, 1187 events. 789/1187 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1086 useless extension candidates. Maximal degree in co-relation 2677. Up to 1185 conditions per place. [2023-08-31 01:17:05,233 INFO L137 encePairwiseOnDemand]: 1059/1064 looper letters, 41 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-08-31 01:17:05,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 214 flow [2023-08-31 01:17:05,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:17:05,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:17:05,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1848 transitions. [2023-08-31 01:17:05,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2023-08-31 01:17:05,239 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1848 transitions. [2023-08-31 01:17:05,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1848 transitions. [2023-08-31 01:17:05,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:05,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1848 transitions. [2023-08-31 01:17:05,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:05,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:05,278 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:05,278 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 122 flow. Second operand 4 states and 1848 transitions. [2023-08-31 01:17:05,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 214 flow [2023-08-31 01:17:05,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 208 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 01:17:05,280 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 134 flow [2023-08-31 01:17:05,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-08-31 01:17:05,281 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-31 01:17:05,282 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 134 flow [2023-08-31 01:17:05,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 458.75) internal successors, (1835), 4 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:05,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:05,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:05,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 01:17:05,283 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)] === [2023-08-31 01:17:05,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:05,284 INFO L85 PathProgramCache]: Analyzing trace with hash 917435877, now seen corresponding path program 1 times [2023-08-31 01:17:05,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:05,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197064581] [2023-08-31 01:17:05,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:05,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:05,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 01:17:05,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:05,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197064581] [2023-08-31 01:17:05,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197064581] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:05,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:05,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:17:05,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040679383] [2023-08-31 01:17:05,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:05,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:17:05,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:05,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:17:05,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:17:05,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1064 [2023-08-31 01:17:05,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 459.0) internal successors, (1836), 4 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:05,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:05,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1064 [2023-08-31 01:17:05,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:05,734 INFO L130 PetriNetUnfolder]: 789/1188 cut-off events. [2023-08-31 01:17:05,734 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-08-31 01:17:05,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 1188 events. 789/1188 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1088 useless extension candidates. Maximal degree in co-relation 2684. Up to 1187 conditions per place. [2023-08-31 01:17:05,740 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 43 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-08-31 01:17:05,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 228 flow [2023-08-31 01:17:05,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:17:05,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:17:05,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1847 transitions. [2023-08-31 01:17:05,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43397556390977443 [2023-08-31 01:17:05,745 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1847 transitions. [2023-08-31 01:17:05,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1847 transitions. [2023-08-31 01:17:05,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:05,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1847 transitions. [2023-08-31 01:17:05,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 461.75) internal successors, (1847), 4 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:05,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:05,757 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:05,757 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 134 flow. Second operand 4 states and 1847 transitions. [2023-08-31 01:17:05,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 228 flow [2023-08-31 01:17:05,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 01:17:05,760 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 144 flow [2023-08-31 01:17:05,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-08-31 01:17:05,761 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-08-31 01:17:05,762 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 144 flow [2023-08-31 01:17:05,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 459.0) internal successors, (1836), 4 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:05,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:05,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:05,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 01:17:05,763 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)] === [2023-08-31 01:17:05,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:05,764 INFO L85 PathProgramCache]: Analyzing trace with hash -230399429, now seen corresponding path program 1 times [2023-08-31 01:17:05,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:05,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742341110] [2023-08-31 01:17:05,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:05,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:06,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 01:17:06,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:06,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742341110] [2023-08-31 01:17:06,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742341110] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:17:06,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397953437] [2023-08-31 01:17:06,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:06,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:17:06,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:17:06,070 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) [2023-08-31 01:17:06,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 01:17:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:06,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-31 01:17:06,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:17:06,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 01:17:06,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:17:06,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397953437] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:06,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:17:06,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-08-31 01:17:06,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035224] [2023-08-31 01:17:06,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:06,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:17:06,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:06,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:17:06,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:17:06,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1064 [2023-08-31 01:17:06,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 459.25) internal successors, (1837), 4 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:06,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:06,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1064 [2023-08-31 01:17:06,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:06,647 INFO L130 PetriNetUnfolder]: 789/1189 cut-off events. [2023-08-31 01:17:06,648 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-08-31 01:17:06,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2699 conditions, 1189 events. 789/1189 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1090 useless extension candidates. Maximal degree in co-relation 2690. Up to 1188 conditions per place. [2023-08-31 01:17:06,654 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 44 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-08-31 01:17:06,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 240 flow [2023-08-31 01:17:06,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:17:06,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:17:06,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1847 transitions. [2023-08-31 01:17:06,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43397556390977443 [2023-08-31 01:17:06,659 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1847 transitions. [2023-08-31 01:17:06,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1847 transitions. [2023-08-31 01:17:06,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:06,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1847 transitions. [2023-08-31 01:17:06,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 461.75) internal successors, (1847), 4 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:06,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:06,686 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:06,686 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 144 flow. Second operand 4 states and 1847 transitions. [2023-08-31 01:17:06,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 240 flow [2023-08-31 01:17:06,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 234 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 01:17:06,689 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 152 flow [2023-08-31 01:17:06,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-08-31 01:17:06,690 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-08-31 01:17:06,690 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 152 flow [2023-08-31 01:17:06,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 459.25) internal successors, (1837), 4 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:06,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:06,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:06,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 01:17:06,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:17:06,898 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)] === [2023-08-31 01:17:06,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:06,899 INFO L85 PathProgramCache]: Analyzing trace with hash 131576679, now seen corresponding path program 1 times [2023-08-31 01:17:06,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:06,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765652438] [2023-08-31 01:17:06,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:06,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-31 01:17:07,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:07,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765652438] [2023-08-31 01:17:07,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765652438] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:07,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:07,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:17:07,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77219490] [2023-08-31 01:17:07,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:07,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:17:07,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:07,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:17:07,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:17:07,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1064 [2023-08-31 01:17:07,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 459.5) internal successors, (1838), 4 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:07,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:07,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1064 [2023-08-31 01:17:07,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:07,414 INFO L130 PetriNetUnfolder]: 789/1190 cut-off events. [2023-08-31 01:17:07,414 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-08-31 01:17:07,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2705 conditions, 1190 events. 789/1190 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4294 event pairs, 641 based on Foata normal form. 0/1092 useless extension candidates. Maximal degree in co-relation 2695. Up to 1189 conditions per place. [2023-08-31 01:17:07,421 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 45 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-08-31 01:17:07,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 250 flow [2023-08-31 01:17:07,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:17:07,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:17:07,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1847 transitions. [2023-08-31 01:17:07,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43397556390977443 [2023-08-31 01:17:07,427 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1847 transitions. [2023-08-31 01:17:07,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1847 transitions. [2023-08-31 01:17:07,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:07,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1847 transitions. [2023-08-31 01:17:07,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 461.75) internal successors, (1847), 4 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:07,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:07,438 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:07,438 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 152 flow. Second operand 4 states and 1847 transitions. [2023-08-31 01:17:07,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 250 flow [2023-08-31 01:17:07,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 244 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 01:17:07,442 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 160 flow [2023-08-31 01:17:07,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-08-31 01:17:07,442 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-08-31 01:17:07,443 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 160 flow [2023-08-31 01:17:07,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 459.5) internal successors, (1838), 4 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:07,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:07,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:07,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 01:17:07,444 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)] === [2023-08-31 01:17:07,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:07,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1404509908, now seen corresponding path program 1 times [2023-08-31 01:17:07,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:07,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435992817] [2023-08-31 01:17:07,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:07,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:09,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:09,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:09,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435992817] [2023-08-31 01:17:09,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435992817] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:09,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:09,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:17:09,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649875701] [2023-08-31 01:17:09,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:09,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:17:09,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:09,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:17:09,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:17:11,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 1064 [2023-08-31 01:17:11,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 160 flow. Second operand has 13 states, 13 states have (on average 414.6923076923077) internal successors, (5391), 13 states have internal predecessors, (5391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:11,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:11,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 1064 [2023-08-31 01:17:11,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:13,040 INFO L130 PetriNetUnfolder]: 2057/3162 cut-off events. [2023-08-31 01:17:13,040 INFO L131 PetriNetUnfolder]: For 303/303 co-relation queries the response was YES. [2023-08-31 01:17:13,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7206 conditions, 3162 events. 2057/3162 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 15935 event pairs, 304 based on Foata normal form. 1/2883 useless extension candidates. Maximal degree in co-relation 7195. Up to 1011 conditions per place. [2023-08-31 01:17:13,055 INFO L137 encePairwiseOnDemand]: 1051/1064 looper letters, 149 selfloop transitions, 11 changer transitions 7/167 dead transitions. [2023-08-31 01:17:13,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 167 transitions, 817 flow [2023-08-31 01:17:13,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 01:17:13,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 01:17:13,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 5099 transitions. [2023-08-31 01:17:13,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993577694235589 [2023-08-31 01:17:13,068 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 5099 transitions. [2023-08-31 01:17:13,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 5099 transitions. [2023-08-31 01:17:13,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:13,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 5099 transitions. [2023-08-31 01:17:13,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 424.9166666666667) internal successors, (5099), 12 states have internal predecessors, (5099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:13,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1064.0) internal successors, (13832), 13 states have internal predecessors, (13832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:13,096 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1064.0) internal successors, (13832), 13 states have internal predecessors, (13832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:13,096 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 160 flow. Second operand 12 states and 5099 transitions. [2023-08-31 01:17:13,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 167 transitions, 817 flow [2023-08-31 01:17:13,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 167 transitions, 811 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 01:17:13,111 INFO L231 Difference]: Finished difference. Result has 68 places, 54 transitions, 216 flow [2023-08-31 01:17:13,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=216, PETRI_PLACES=68, PETRI_TRANSITIONS=54} [2023-08-31 01:17:13,112 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-08-31 01:17:13,112 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 54 transitions, 216 flow [2023-08-31 01:17:13,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 414.6923076923077) internal successors, (5391), 13 states have internal predecessors, (5391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:13,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:13,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:13,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 01:17:13,115 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)] === [2023-08-31 01:17:13,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:13,116 INFO L85 PathProgramCache]: Analyzing trace with hash -2043930938, now seen corresponding path program 2 times [2023-08-31 01:17:13,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:13,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590789402] [2023-08-31 01:17:13,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:13,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:15,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:15,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:15,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590789402] [2023-08-31 01:17:15,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590789402] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:15,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:15,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:17:15,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687116822] [2023-08-31 01:17:15,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:15,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:17:15,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:15,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:17:15,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:17:16,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-08-31 01:17:16,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 54 transitions, 216 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:16,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:16,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-08-31 01:17:16,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:17,739 INFO L130 PetriNetUnfolder]: 4081/6398 cut-off events. [2023-08-31 01:17:17,739 INFO L131 PetriNetUnfolder]: For 3403/3403 co-relation queries the response was YES. [2023-08-31 01:17:17,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16807 conditions, 6398 events. 4081/6398 cut-off events. For 3403/3403 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 38481 event pairs, 819 based on Foata normal form. 1/6398 useless extension candidates. Maximal degree in co-relation 16790. Up to 2803 conditions per place. [2023-08-31 01:17:17,787 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 134 selfloop transitions, 12 changer transitions 7/153 dead transitions. [2023-08-31 01:17:17,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 153 transitions, 837 flow [2023-08-31 01:17:17,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:17:17,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:17:17,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3940 transitions. [2023-08-31 01:17:17,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114452798663325 [2023-08-31 01:17:17,797 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3940 transitions. [2023-08-31 01:17:17,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3940 transitions. [2023-08-31 01:17:17,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:17,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3940 transitions. [2023-08-31 01:17:17,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 437.77777777777777) internal successors, (3940), 9 states have internal predecessors, (3940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:17,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:17,820 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:17,821 INFO L175 Difference]: Start difference. First operand has 68 places, 54 transitions, 216 flow. Second operand 9 states and 3940 transitions. [2023-08-31 01:17:17,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 153 transitions, 837 flow [2023-08-31 01:17:17,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 153 transitions, 804 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-31 01:17:17,860 INFO L231 Difference]: Finished difference. Result has 76 places, 63 transitions, 307 flow [2023-08-31 01:17:17,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=307, PETRI_PLACES=76, PETRI_TRANSITIONS=63} [2023-08-31 01:17:17,861 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2023-08-31 01:17:17,861 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 63 transitions, 307 flow [2023-08-31 01:17:17,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:17,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:17,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:17,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 01:17:17,864 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)] === [2023-08-31 01:17:17,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:17,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1268587720, now seen corresponding path program 3 times [2023-08-31 01:17:17,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:17,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498445450] [2023-08-31 01:17:17,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:17,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:20,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:20,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498445450] [2023-08-31 01:17:20,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498445450] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:20,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:20,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-31 01:17:20,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375662763] [2023-08-31 01:17:20,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:20,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 01:17:20,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:20,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 01:17:20,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-08-31 01:17:22,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 1064 [2023-08-31 01:17:22,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 63 transitions, 307 flow. Second operand has 14 states, 14 states have (on average 403.5) internal successors, (5649), 14 states have internal predecessors, (5649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:22,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:22,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 1064 [2023-08-31 01:17:22,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:25,801 INFO L130 PetriNetUnfolder]: 5335/8834 cut-off events. [2023-08-31 01:17:25,801 INFO L131 PetriNetUnfolder]: For 10406/10406 co-relation queries the response was YES. [2023-08-31 01:17:25,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26166 conditions, 8834 events. 5335/8834 cut-off events. For 10406/10406 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 60337 event pairs, 1122 based on Foata normal form. 1/8834 useless extension candidates. Maximal degree in co-relation 26143. Up to 2974 conditions per place. [2023-08-31 01:17:25,854 INFO L137 encePairwiseOnDemand]: 1046/1064 looper letters, 172 selfloop transitions, 64 changer transitions 7/243 dead transitions. [2023-08-31 01:17:25,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 243 transitions, 1590 flow [2023-08-31 01:17:25,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-31 01:17:25,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-31 01:17:25,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7407 transitions. [2023-08-31 01:17:25,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3867481203007519 [2023-08-31 01:17:25,871 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7407 transitions. [2023-08-31 01:17:25,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7407 transitions. [2023-08-31 01:17:25,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:25,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7407 transitions. [2023-08-31 01:17:25,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 411.5) internal successors, (7407), 18 states have internal predecessors, (7407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:25,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 1064.0) internal successors, (20216), 19 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:25,927 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 1064.0) internal successors, (20216), 19 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:25,928 INFO L175 Difference]: Start difference. First operand has 76 places, 63 transitions, 307 flow. Second operand 18 states and 7407 transitions. [2023-08-31 01:17:25,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 243 transitions, 1590 flow [2023-08-31 01:17:25,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 243 transitions, 1580 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-31 01:17:25,992 INFO L231 Difference]: Finished difference. Result has 103 places, 123 transitions, 934 flow [2023-08-31 01:17:25,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=934, PETRI_PLACES=103, PETRI_TRANSITIONS=123} [2023-08-31 01:17:25,993 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 61 predicate places. [2023-08-31 01:17:25,993 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 123 transitions, 934 flow [2023-08-31 01:17:25,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 403.5) internal successors, (5649), 14 states have internal predecessors, (5649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:25,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:25,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:25,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 01:17:25,995 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)] === [2023-08-31 01:17:25,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:25,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1785788936, now seen corresponding path program 4 times [2023-08-31 01:17:25,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:25,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273970564] [2023-08-31 01:17:25,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:25,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:27,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:27,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:27,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273970564] [2023-08-31 01:17:27,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273970564] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:27,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:27,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:17:27,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346923267] [2023-08-31 01:17:27,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:27,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:17:27,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:27,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:17:27,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:17:28,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-08-31 01:17:28,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 123 transitions, 934 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:28,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:28,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-08-31 01:17:28,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:30,347 INFO L130 PetriNetUnfolder]: 5889/9930 cut-off events. [2023-08-31 01:17:30,347 INFO L131 PetriNetUnfolder]: For 28769/28769 co-relation queries the response was YES. [2023-08-31 01:17:30,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39219 conditions, 9930 events. 5889/9930 cut-off events. For 28769/28769 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 70810 event pairs, 1305 based on Foata normal form. 1/9930 useless extension candidates. Maximal degree in co-relation 39184. Up to 3953 conditions per place. [2023-08-31 01:17:30,429 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 274 selfloop transitions, 29 changer transitions 7/310 dead transitions. [2023-08-31 01:17:30,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 310 transitions, 2717 flow [2023-08-31 01:17:30,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:17:30,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:17:30,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3948 transitions. [2023-08-31 01:17:30,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41228070175438597 [2023-08-31 01:17:30,437 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3948 transitions. [2023-08-31 01:17:30,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3948 transitions. [2023-08-31 01:17:30,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:30,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3948 transitions. [2023-08-31 01:17:30,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 438.6666666666667) internal successors, (3948), 9 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:30,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:30,454 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:30,455 INFO L175 Difference]: Start difference. First operand has 103 places, 123 transitions, 934 flow. Second operand 9 states and 3948 transitions. [2023-08-31 01:17:30,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 310 transitions, 2717 flow [2023-08-31 01:17:30,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 310 transitions, 2638 flow, removed 37 selfloop flow, removed 4 redundant places. [2023-08-31 01:17:30,705 INFO L231 Difference]: Finished difference. Result has 113 places, 132 transitions, 1121 flow [2023-08-31 01:17:30,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1121, PETRI_PLACES=113, PETRI_TRANSITIONS=132} [2023-08-31 01:17:30,706 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 71 predicate places. [2023-08-31 01:17:30,707 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 132 transitions, 1121 flow [2023-08-31 01:17:30,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:30,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:30,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:30,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 01:17:30,708 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)] === [2023-08-31 01:17:30,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:30,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1312490772, now seen corresponding path program 5 times [2023-08-31 01:17:30,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:30,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404641943] [2023-08-31 01:17:30,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:30,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:33,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:33,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:33,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404641943] [2023-08-31 01:17:33,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404641943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:33,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:33,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:17:33,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210115997] [2023-08-31 01:17:33,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:33,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:17:33,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:33,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:17:33,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:17:34,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 1064 [2023-08-31 01:17:34,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 132 transitions, 1121 flow. Second operand has 10 states, 10 states have (on average 415.5) internal successors, (4155), 10 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:34,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:34,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 1064 [2023-08-31 01:17:34,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:37,619 INFO L130 PetriNetUnfolder]: 6944/11873 cut-off events. [2023-08-31 01:17:37,619 INFO L131 PetriNetUnfolder]: For 44867/44867 co-relation queries the response was YES. [2023-08-31 01:17:37,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48976 conditions, 11873 events. 6944/11873 cut-off events. For 44867/44867 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 87849 event pairs, 1776 based on Foata normal form. 1/11873 useless extension candidates. Maximal degree in co-relation 48935. Up to 6148 conditions per place. [2023-08-31 01:17:37,810 INFO L137 encePairwiseOnDemand]: 1053/1064 looper letters, 230 selfloop transitions, 43 changer transitions 7/280 dead transitions. [2023-08-31 01:17:37,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 280 transitions, 2693 flow [2023-08-31 01:17:37,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:17:37,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:17:37,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4253 transitions. [2023-08-31 01:17:37,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.399718045112782 [2023-08-31 01:17:37,827 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4253 transitions. [2023-08-31 01:17:37,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4253 transitions. [2023-08-31 01:17:37,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:37,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4253 transitions. [2023-08-31 01:17:37,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 425.3) internal successors, (4253), 10 states have internal predecessors, (4253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:37,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:37,845 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:37,845 INFO L175 Difference]: Start difference. First operand has 113 places, 132 transitions, 1121 flow. Second operand 10 states and 4253 transitions. [2023-08-31 01:17:37,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 280 transitions, 2693 flow [2023-08-31 01:17:38,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 280 transitions, 2634 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-08-31 01:17:38,202 INFO L231 Difference]: Finished difference. Result has 127 places, 145 transitions, 1393 flow [2023-08-31 01:17:38,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1393, PETRI_PLACES=127, PETRI_TRANSITIONS=145} [2023-08-31 01:17:38,203 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2023-08-31 01:17:38,203 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 145 transitions, 1393 flow [2023-08-31 01:17:38,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 415.5) internal successors, (4155), 10 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:38,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:38,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:38,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 01:17:38,204 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)] === [2023-08-31 01:17:38,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:38,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1161360985, now seen corresponding path program 1 times [2023-08-31 01:17:38,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:38,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074508827] [2023-08-31 01:17:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:38,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:38,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:38,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:38,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074508827] [2023-08-31 01:17:38,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074508827] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:38,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:38,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:17:38,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579205044] [2023-08-31 01:17:38,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:38,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:17:38,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:38,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:17:38,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:17:38,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1064 [2023-08-31 01:17:38,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 145 transitions, 1393 flow. Second operand has 4 states, 4 states have (on average 453.75) internal successors, (1815), 4 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:38,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:38,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1064 [2023-08-31 01:17:38,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:40,969 INFO L130 PetriNetUnfolder]: 9347/16523 cut-off events. [2023-08-31 01:17:40,969 INFO L131 PetriNetUnfolder]: For 86663/86663 co-relation queries the response was YES. [2023-08-31 01:17:41,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70143 conditions, 16523 events. 9347/16523 cut-off events. For 86663/86663 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 135666 event pairs, 3438 based on Foata normal form. 248/16770 useless extension candidates. Maximal degree in co-relation 70095. Up to 8790 conditions per place. [2023-08-31 01:17:41,093 INFO L137 encePairwiseOnDemand]: 1058/1064 looper letters, 258 selfloop transitions, 24 changer transitions 0/282 dead transitions. [2023-08-31 01:17:41,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 282 transitions, 3368 flow [2023-08-31 01:17:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:17:41,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:17:41,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2311 transitions. [2023-08-31 01:17:41,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4343984962406015 [2023-08-31 01:17:41,099 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2311 transitions. [2023-08-31 01:17:41,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2311 transitions. [2023-08-31 01:17:41,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:41,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2311 transitions. [2023-08-31 01:17:41,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 462.2) internal successors, (2311), 5 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:41,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1064.0) internal successors, (6384), 6 states have internal predecessors, (6384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:41,106 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1064.0) internal successors, (6384), 6 states have internal predecessors, (6384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:41,106 INFO L175 Difference]: Start difference. First operand has 127 places, 145 transitions, 1393 flow. Second operand 5 states and 2311 transitions. [2023-08-31 01:17:41,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 282 transitions, 3368 flow [2023-08-31 01:17:41,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 282 transitions, 3274 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-08-31 01:17:41,708 INFO L231 Difference]: Finished difference. Result has 132 places, 159 transitions, 1617 flow [2023-08-31 01:17:41,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1617, PETRI_PLACES=132, PETRI_TRANSITIONS=159} [2023-08-31 01:17:41,709 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 90 predicate places. [2023-08-31 01:17:41,709 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 159 transitions, 1617 flow [2023-08-31 01:17:41,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 453.75) internal successors, (1815), 4 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:41,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:41,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:41,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-31 01:17:41,710 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)] === [2023-08-31 01:17:41,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:41,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1918445084, now seen corresponding path program 6 times [2023-08-31 01:17:41,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:41,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836357486] [2023-08-31 01:17:41,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:41,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:43,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:43,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:43,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836357486] [2023-08-31 01:17:43,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836357486] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:43,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:43,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:17:43,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475909024] [2023-08-31 01:17:43,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:43,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:17:43,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:43,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:17:43,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:17:45,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 1064 [2023-08-31 01:17:45,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 159 transitions, 1617 flow. Second operand has 13 states, 13 states have (on average 403.6923076923077) internal successors, (5248), 13 states have internal predecessors, (5248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:45,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:45,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 1064 [2023-08-31 01:17:45,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:50,164 INFO L130 PetriNetUnfolder]: 9370/16593 cut-off events. [2023-08-31 01:17:50,164 INFO L131 PetriNetUnfolder]: For 85888/85888 co-relation queries the response was YES. [2023-08-31 01:17:50,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75956 conditions, 16593 events. 9370/16593 cut-off events. For 85888/85888 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 136810 event pairs, 1154 based on Foata normal form. 1/16593 useless extension candidates. Maximal degree in co-relation 75906. Up to 5499 conditions per place. [2023-08-31 01:17:50,306 INFO L137 encePairwiseOnDemand]: 1049/1064 looper letters, 260 selfloop transitions, 130 changer transitions 7/397 dead transitions. [2023-08-31 01:17:50,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 397 transitions, 4114 flow [2023-08-31 01:17:50,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-31 01:17:50,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-31 01:17:50,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7428 transitions. [2023-08-31 01:17:50,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38784461152882205 [2023-08-31 01:17:50,318 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7428 transitions. [2023-08-31 01:17:50,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7428 transitions. [2023-08-31 01:17:50,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:50,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7428 transitions. [2023-08-31 01:17:50,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 412.6666666666667) internal successors, (7428), 18 states have internal predecessors, (7428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:50,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 1064.0) internal successors, (20216), 19 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:50,343 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 1064.0) internal successors, (20216), 19 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:50,343 INFO L175 Difference]: Start difference. First operand has 132 places, 159 transitions, 1617 flow. Second operand 18 states and 7428 transitions. [2023-08-31 01:17:50,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 397 transitions, 4114 flow [2023-08-31 01:17:50,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 397 transitions, 4110 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-31 01:17:50,988 INFO L231 Difference]: Finished difference. Result has 157 places, 222 transitions, 2668 flow [2023-08-31 01:17:50,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2668, PETRI_PLACES=157, PETRI_TRANSITIONS=222} [2023-08-31 01:17:50,988 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 115 predicate places. [2023-08-31 01:17:50,989 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 222 transitions, 2668 flow [2023-08-31 01:17:50,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 403.6923076923077) internal successors, (5248), 13 states have internal predecessors, (5248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:50,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:50,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:50,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-31 01:17:50,990 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)] === [2023-08-31 01:17:50,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:50,990 INFO L85 PathProgramCache]: Analyzing trace with hash -605776418, now seen corresponding path program 7 times [2023-08-31 01:17:50,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:50,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135605681] [2023-08-31 01:17:50,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:50,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:52,198 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:52,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:52,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135605681] [2023-08-31 01:17:52,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135605681] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:52,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:52,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:17:52,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513730374] [2023-08-31 01:17:52,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:52,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:17:52,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:52,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:17:52,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:17:53,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 1064 [2023-08-31 01:17:53,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 222 transitions, 2668 flow. Second operand has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:53,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:53,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 1064 [2023-08-31 01:17:53,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:56,425 INFO L130 PetriNetUnfolder]: 9569/17260 cut-off events. [2023-08-31 01:17:56,425 INFO L131 PetriNetUnfolder]: For 124559/124559 co-relation queries the response was YES. [2023-08-31 01:17:56,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86201 conditions, 17260 events. 9569/17260 cut-off events. For 124559/124559 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 146290 event pairs, 2246 based on Foata normal form. 1/17260 useless extension candidates. Maximal degree in co-relation 86142. Up to 6581 conditions per place. [2023-08-31 01:17:56,582 INFO L137 encePairwiseOnDemand]: 1052/1064 looper letters, 325 selfloop transitions, 99 changer transitions 8/432 dead transitions. [2023-08-31 01:17:56,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 432 transitions, 5698 flow [2023-08-31 01:17:56,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:17:56,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:17:56,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4285 transitions. [2023-08-31 01:17:56,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40272556390977443 [2023-08-31 01:17:56,587 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4285 transitions. [2023-08-31 01:17:56,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4285 transitions. [2023-08-31 01:17:56,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:56,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4285 transitions. [2023-08-31 01:17:56,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 428.5) internal successors, (4285), 10 states have internal predecessors, (4285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:56,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:56,601 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:56,601 INFO L175 Difference]: Start difference. First operand has 157 places, 222 transitions, 2668 flow. Second operand 10 states and 4285 transitions. [2023-08-31 01:17:56,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 432 transitions, 5698 flow [2023-08-31 01:17:57,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 432 transitions, 5582 flow, removed 38 selfloop flow, removed 5 redundant places. [2023-08-31 01:17:57,765 INFO L231 Difference]: Finished difference. Result has 167 places, 267 transitions, 3618 flow [2023-08-31 01:17:57,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=2602, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3618, PETRI_PLACES=167, PETRI_TRANSITIONS=267} [2023-08-31 01:17:57,765 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 125 predicate places. [2023-08-31 01:17:57,766 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 267 transitions, 3618 flow [2023-08-31 01:17:57,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:57,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:57,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:57,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-31 01:17:57,766 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)] === [2023-08-31 01:17:57,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:57,767 INFO L85 PathProgramCache]: Analyzing trace with hash -948365568, now seen corresponding path program 8 times [2023-08-31 01:17:57,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:57,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407655877] [2023-08-31 01:17:57,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:57,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:59,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:59,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:59,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407655877] [2023-08-31 01:17:59,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407655877] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:59,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:59,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-31 01:17:59,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521081114] [2023-08-31 01:17:59,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:59,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 01:17:59,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:59,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 01:17:59,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-08-31 01:18:01,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 1064 [2023-08-31 01:18:01,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 267 transitions, 3618 flow. Second operand has 14 states, 14 states have (on average 405.5) internal successors, (5677), 14 states have internal predecessors, (5677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:01,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:01,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 1064 [2023-08-31 01:18:01,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:04,687 INFO L130 PetriNetUnfolder]: 9564/17247 cut-off events. [2023-08-31 01:18:04,687 INFO L131 PetriNetUnfolder]: For 152468/152468 co-relation queries the response was YES. [2023-08-31 01:18:04,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93023 conditions, 17247 events. 9564/17247 cut-off events. For 152468/152468 co-relation queries the response was YES. Maximal size of possible extension queue 1165. Compared 145908 event pairs, 3027 based on Foata normal form. 1/17247 useless extension candidates. Maximal degree in co-relation 92958. Up to 8681 conditions per place. [2023-08-31 01:18:04,845 INFO L137 encePairwiseOnDemand]: 1048/1064 looper letters, 317 selfloop transitions, 86 changer transitions 8/411 dead transitions. [2023-08-31 01:18:04,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 411 transitions, 5896 flow [2023-08-31 01:18:04,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 01:18:04,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 01:18:04,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 5385 transitions. [2023-08-31 01:18:04,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38931463273568534 [2023-08-31 01:18:04,851 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 5385 transitions. [2023-08-31 01:18:04,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 5385 transitions. [2023-08-31 01:18:04,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:04,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 5385 transitions. [2023-08-31 01:18:04,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 414.2307692307692) internal successors, (5385), 13 states have internal predecessors, (5385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:04,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 1064.0) internal successors, (14896), 14 states have internal predecessors, (14896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:04,869 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 1064.0) internal successors, (14896), 14 states have internal predecessors, (14896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:04,869 INFO L175 Difference]: Start difference. First operand has 167 places, 267 transitions, 3618 flow. Second operand 13 states and 5385 transitions. [2023-08-31 01:18:04,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 411 transitions, 5896 flow [2023-08-31 01:18:06,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 411 transitions, 5684 flow, removed 64 selfloop flow, removed 3 redundant places. [2023-08-31 01:18:06,224 INFO L231 Difference]: Finished difference. Result has 181 places, 289 transitions, 4154 flow [2023-08-31 01:18:06,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=3500, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4154, PETRI_PLACES=181, PETRI_TRANSITIONS=289} [2023-08-31 01:18:06,225 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 139 predicate places. [2023-08-31 01:18:06,225 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 289 transitions, 4154 flow [2023-08-31 01:18:06,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 405.5) internal successors, (5677), 14 states have internal predecessors, (5677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:06,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:06,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:06,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-31 01:18:06,227 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)] === [2023-08-31 01:18:06,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:06,227 INFO L85 PathProgramCache]: Analyzing trace with hash -770924642, now seen corresponding path program 9 times [2023-08-31 01:18:06,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:06,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992662043] [2023-08-31 01:18:06,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:06,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:07,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:07,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992662043] [2023-08-31 01:18:07,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992662043] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:07,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:07,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:18:07,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212159342] [2023-08-31 01:18:07,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:07,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:18:07,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:07,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:18:07,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:18:08,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-08-31 01:18:08,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 289 transitions, 4154 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:08,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:08,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-08-31 01:18:08,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:12,253 INFO L130 PetriNetUnfolder]: 11008/19865 cut-off events. [2023-08-31 01:18:12,253 INFO L131 PetriNetUnfolder]: For 190407/190407 co-relation queries the response was YES. [2023-08-31 01:18:12,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108701 conditions, 19865 events. 11008/19865 cut-off events. For 190407/190407 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 171512 event pairs, 2564 based on Foata normal form. 1/19865 useless extension candidates. Maximal degree in co-relation 108631. Up to 9344 conditions per place. [2023-08-31 01:18:12,517 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 423 selfloop transitions, 78 changer transitions 7/508 dead transitions. [2023-08-31 01:18:12,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 508 transitions, 7584 flow [2023-08-31 01:18:12,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:18:12,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:18:12,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3955 transitions. [2023-08-31 01:18:12,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4130116959064328 [2023-08-31 01:18:12,521 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3955 transitions. [2023-08-31 01:18:12,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3955 transitions. [2023-08-31 01:18:12,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:12,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3955 transitions. [2023-08-31 01:18:12,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 439.44444444444446) internal successors, (3955), 9 states have internal predecessors, (3955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:12,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:12,533 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:12,533 INFO L175 Difference]: Start difference. First operand has 181 places, 289 transitions, 4154 flow. Second operand 9 states and 3955 transitions. [2023-08-31 01:18:12,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 508 transitions, 7584 flow [2023-08-31 01:18:14,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 508 transitions, 7380 flow, removed 26 selfloop flow, removed 7 redundant places. [2023-08-31 01:18:14,573 INFO L231 Difference]: Finished difference. Result has 187 places, 314 transitions, 4730 flow [2023-08-31 01:18:14,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=4037, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4730, PETRI_PLACES=187, PETRI_TRANSITIONS=314} [2023-08-31 01:18:14,574 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 145 predicate places. [2023-08-31 01:18:14,574 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 314 transitions, 4730 flow [2023-08-31 01:18:14,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:14,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:14,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:14,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-31 01:18:14,575 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)] === [2023-08-31 01:18:14,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:14,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1701044426, now seen corresponding path program 10 times [2023-08-31 01:18:14,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:14,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141891287] [2023-08-31 01:18:14,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:14,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:15,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:15,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:15,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141891287] [2023-08-31 01:18:15,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141891287] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:15,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:15,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:18:15,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879171825] [2023-08-31 01:18:15,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:15,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:18:15,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:15,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:18:15,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-08-31 01:18:17,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 1064 [2023-08-31 01:18:17,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 314 transitions, 4730 flow. Second operand has 12 states, 12 states have (on average 414.9166666666667) internal successors, (4979), 12 states have internal predecessors, (4979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:17,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:17,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 1064 [2023-08-31 01:18:17,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:22,210 INFO L130 PetriNetUnfolder]: 12254/22399 cut-off events. [2023-08-31 01:18:22,211 INFO L131 PetriNetUnfolder]: For 212135/212135 co-relation queries the response was YES. [2023-08-31 01:18:22,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121963 conditions, 22399 events. 12254/22399 cut-off events. For 212135/212135 co-relation queries the response was YES. Maximal size of possible extension queue 1498. Compared 199758 event pairs, 2513 based on Foata normal form. 1/22399 useless extension candidates. Maximal degree in co-relation 121888. Up to 9772 conditions per place. [2023-08-31 01:18:22,511 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 429 selfloop transitions, 53 changer transitions 7/489 dead transitions. [2023-08-31 01:18:22,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 489 transitions, 7616 flow [2023-08-31 01:18:22,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 01:18:22,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 01:18:22,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4667 transitions. [2023-08-31 01:18:22,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3987525632262474 [2023-08-31 01:18:22,515 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4667 transitions. [2023-08-31 01:18:22,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4667 transitions. [2023-08-31 01:18:22,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:22,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4667 transitions. [2023-08-31 01:18:22,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 424.27272727272725) internal successors, (4667), 11 states have internal predecessors, (4667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:22,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:22,528 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:22,528 INFO L175 Difference]: Start difference. First operand has 187 places, 314 transitions, 4730 flow. Second operand 11 states and 4667 transitions. [2023-08-31 01:18:22,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 489 transitions, 7616 flow [2023-08-31 01:18:24,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 489 transitions, 7476 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-08-31 01:18:25,047 INFO L231 Difference]: Finished difference. Result has 199 places, 324 transitions, 4988 flow [2023-08-31 01:18:25,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=4628, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4988, PETRI_PLACES=199, PETRI_TRANSITIONS=324} [2023-08-31 01:18:25,047 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 157 predicate places. [2023-08-31 01:18:25,048 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 324 transitions, 4988 flow [2023-08-31 01:18:25,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 414.9166666666667) internal successors, (4979), 12 states have internal predecessors, (4979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:25,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:25,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:25,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-31 01:18:25,049 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)] === [2023-08-31 01:18:25,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:25,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1165370582, now seen corresponding path program 11 times [2023-08-31 01:18:25,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:25,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244998913] [2023-08-31 01:18:25,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:25,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:26,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:26,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:26,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244998913] [2023-08-31 01:18:26,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244998913] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:26,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:26,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:18:26,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573304889] [2023-08-31 01:18:26,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:26,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:18:26,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:26,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:18:26,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:18:27,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 1064 [2023-08-31 01:18:27,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 324 transitions, 4988 flow. Second operand has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:27,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:27,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 1064 [2023-08-31 01:18:27,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:34,232 INFO L130 PetriNetUnfolder]: 16860/30772 cut-off events. [2023-08-31 01:18:34,232 INFO L131 PetriNetUnfolder]: For 347694/347694 co-relation queries the response was YES. [2023-08-31 01:18:34,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170136 conditions, 30772 events. 16860/30772 cut-off events. For 347694/347694 co-relation queries the response was YES. Maximal size of possible extension queue 2051. Compared 285896 event pairs, 4772 based on Foata normal form. 2/30773 useless extension candidates. Maximal degree in co-relation 170056. Up to 10862 conditions per place. [2023-08-31 01:18:34,899 INFO L137 encePairwiseOnDemand]: 1052/1064 looper letters, 603 selfloop transitions, 152 changer transitions 16/771 dead transitions. [2023-08-31 01:18:34,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 771 transitions, 11672 flow [2023-08-31 01:18:34,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-31 01:18:34,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-31 01:18:34,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7288 transitions. [2023-08-31 01:18:34,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4029190623617868 [2023-08-31 01:18:34,906 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7288 transitions. [2023-08-31 01:18:34,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7288 transitions. [2023-08-31 01:18:34,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:34,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7288 transitions. [2023-08-31 01:18:34,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 428.70588235294116) internal successors, (7288), 17 states have internal predecessors, (7288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:34,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1064.0) internal successors, (19152), 18 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:34,923 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1064.0) internal successors, (19152), 18 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:34,923 INFO L175 Difference]: Start difference. First operand has 199 places, 324 transitions, 4988 flow. Second operand 17 states and 7288 transitions. [2023-08-31 01:18:34,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 771 transitions, 11672 flow [2023-08-31 01:18:38,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 771 transitions, 11503 flow, removed 43 selfloop flow, removed 5 redundant places. [2023-08-31 01:18:38,716 INFO L231 Difference]: Finished difference. Result has 224 places, 404 transitions, 6993 flow [2023-08-31 01:18:38,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=4910, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6993, PETRI_PLACES=224, PETRI_TRANSITIONS=404} [2023-08-31 01:18:38,717 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 182 predicate places. [2023-08-31 01:18:38,717 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 404 transitions, 6993 flow [2023-08-31 01:18:38,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:38,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:38,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:38,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-31 01:18:38,718 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)] === [2023-08-31 01:18:38,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:38,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1478290662, now seen corresponding path program 12 times [2023-08-31 01:18:38,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:38,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965637098] [2023-08-31 01:18:38,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:38,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:40,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:40,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:40,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965637098] [2023-08-31 01:18:40,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965637098] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:40,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:40,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:18:40,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984652715] [2023-08-31 01:18:40,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:40,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:18:40,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:40,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:18:40,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:18:41,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 1064 [2023-08-31 01:18:41,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 404 transitions, 6993 flow. Second operand has 13 states, 13 states have (on average 416.6923076923077) internal successors, (5417), 13 states have internal predecessors, (5417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:41,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:41,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 1064 [2023-08-31 01:18:41,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:52,068 INFO L130 PetriNetUnfolder]: 24515/44858 cut-off events. [2023-08-31 01:18:52,069 INFO L131 PetriNetUnfolder]: For 528886/528886 co-relation queries the response was YES. [2023-08-31 01:18:52,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257531 conditions, 44858 events. 24515/44858 cut-off events. For 528886/528886 co-relation queries the response was YES. Maximal size of possible extension queue 3065. Compared 443078 event pairs, 8839 based on Foata normal form. 2/44859 useless extension candidates. Maximal degree in co-relation 257437. Up to 19099 conditions per place. [2023-08-31 01:18:53,024 INFO L137 encePairwiseOnDemand]: 1053/1064 looper letters, 734 selfloop transitions, 100 changer transitions 7/841 dead transitions. [2023-08-31 01:18:53,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 841 transitions, 15062 flow [2023-08-31 01:18:53,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:18:53,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:18:53,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4298 transitions. [2023-08-31 01:18:53,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4039473684210526 [2023-08-31 01:18:53,028 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4298 transitions. [2023-08-31 01:18:53,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4298 transitions. [2023-08-31 01:18:53,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:53,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4298 transitions. [2023-08-31 01:18:53,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 429.8) internal successors, (4298), 10 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:53,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:53,038 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:53,038 INFO L175 Difference]: Start difference. First operand has 224 places, 404 transitions, 6993 flow. Second operand 10 states and 4298 transitions. [2023-08-31 01:18:53,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 841 transitions, 15062 flow [2023-08-31 01:19:02,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 841 transitions, 14769 flow, removed 98 selfloop flow, removed 3 redundant places. [2023-08-31 01:19:02,975 INFO L231 Difference]: Finished difference. Result has 235 places, 467 transitions, 8600 flow [2023-08-31 01:19:02,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=6779, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8600, PETRI_PLACES=235, PETRI_TRANSITIONS=467} [2023-08-31 01:19:02,975 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 193 predicate places. [2023-08-31 01:19:02,976 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 467 transitions, 8600 flow [2023-08-31 01:19:02,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 416.6923076923077) internal successors, (5417), 13 states have internal predecessors, (5417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:02,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:19:02,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:19:02,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-31 01:19:02,977 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)] === [2023-08-31 01:19:02,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:19:02,977 INFO L85 PathProgramCache]: Analyzing trace with hash -447950648, now seen corresponding path program 13 times [2023-08-31 01:19:02,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:19:02,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468635128] [2023-08-31 01:19:02,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:19:02,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:19:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:19:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:19:04,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:19:04,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468635128] [2023-08-31 01:19:04,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468635128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:19:04,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:19:04,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:19:04,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100801692] [2023-08-31 01:19:04,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:19:04,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:19:04,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:19:04,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:19:04,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:19:05,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 1064 [2023-08-31 01:19:05,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 467 transitions, 8600 flow. Second operand has 10 states, 10 states have (on average 420.5) internal successors, (4205), 10 states have internal predecessors, (4205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:05,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:19:05,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 1064 [2023-08-31 01:19:05,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:19:20,708 INFO L130 PetriNetUnfolder]: 30871/56791 cut-off events. [2023-08-31 01:19:20,709 INFO L131 PetriNetUnfolder]: For 739638/739638 co-relation queries the response was YES. [2023-08-31 01:19:21,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332116 conditions, 56791 events. 30871/56791 cut-off events. For 739638/739638 co-relation queries the response was YES. Maximal size of possible extension queue 3875. Compared 581275 event pairs, 12627 based on Foata normal form. 2/56792 useless extension candidates. Maximal degree in co-relation 332017. Up to 28003 conditions per place. [2023-08-31 01:19:21,990 INFO L137 encePairwiseOnDemand]: 1053/1064 looper letters, 876 selfloop transitions, 160 changer transitions 14/1050 dead transitions. [2023-08-31 01:19:21,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 1050 transitions, 18904 flow [2023-08-31 01:19:21,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-31 01:19:21,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-31 01:19:21,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 6915 transitions. [2023-08-31 01:19:21,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40619125939849626 [2023-08-31 01:19:21,995 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 6915 transitions. [2023-08-31 01:19:21,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 6915 transitions. [2023-08-31 01:19:21,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:19:21,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 6915 transitions. [2023-08-31 01:19:22,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 432.1875) internal successors, (6915), 16 states have internal predecessors, (6915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:22,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 1064.0) internal successors, (18088), 17 states have internal predecessors, (18088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:22,008 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 1064.0) internal successors, (18088), 17 states have internal predecessors, (18088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:22,008 INFO L175 Difference]: Start difference. First operand has 235 places, 467 transitions, 8600 flow. Second operand 16 states and 6915 transitions. [2023-08-31 01:19:22,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 1050 transitions, 18904 flow [2023-08-31 01:19:40,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 1050 transitions, 18683 flow, removed 101 selfloop flow, removed 3 redundant places. [2023-08-31 01:19:40,367 INFO L231 Difference]: Finished difference. Result has 259 places, 528 transitions, 10555 flow [2023-08-31 01:19:40,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=8521, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10555, PETRI_PLACES=259, PETRI_TRANSITIONS=528} [2023-08-31 01:19:40,368 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 217 predicate places. [2023-08-31 01:19:40,368 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 528 transitions, 10555 flow [2023-08-31 01:19:40,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 420.5) internal successors, (4205), 10 states have internal predecessors, (4205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:40,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:19:40,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:19:40,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-31 01:19:40,369 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)] === [2023-08-31 01:19:40,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:19:40,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1864998854, now seen corresponding path program 14 times [2023-08-31 01:19:40,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:19:40,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992142717] [2023-08-31 01:19:40,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:19:40,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:19:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:19:41,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:19:41,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:19:41,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992142717] [2023-08-31 01:19:41,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992142717] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:19:41,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:19:41,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:19:41,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424843441] [2023-08-31 01:19:41,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:19:41,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:19:41,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:19:41,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:19:41,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:19:42,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 1064 [2023-08-31 01:19:42,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 528 transitions, 10555 flow. Second operand has 10 states, 10 states have (on average 415.5) internal successors, (4155), 10 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:42,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:19:42,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 1064 [2023-08-31 01:19:42,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:19:59,867 INFO L130 PetriNetUnfolder]: 30869/56774 cut-off events. [2023-08-31 01:19:59,867 INFO L131 PetriNetUnfolder]: For 803964/803964 co-relation queries the response was YES. [2023-08-31 01:20:01,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339350 conditions, 56774 events. 30869/56774 cut-off events. For 803964/803964 co-relation queries the response was YES. Maximal size of possible extension queue 3873. Compared 581699 event pairs, 9335 based on Foata normal form. 1/56774 useless extension candidates. Maximal degree in co-relation 339239. Up to 26768 conditions per place. [2023-08-31 01:20:01,529 INFO L137 encePairwiseOnDemand]: 1049/1064 looper letters, 429 selfloop transitions, 460 changer transitions 7/896 dead transitions. [2023-08-31 01:20:01,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 896 transitions, 17622 flow [2023-08-31 01:20:01,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-31 01:20:01,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-31 01:20:01,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6373 transitions. [2023-08-31 01:20:01,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993107769423559 [2023-08-31 01:20:01,538 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6373 transitions. [2023-08-31 01:20:01,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6373 transitions. [2023-08-31 01:20:01,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:20:01,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6373 transitions. [2023-08-31 01:20:01,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 424.8666666666667) internal successors, (6373), 15 states have internal predecessors, (6373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:20:01,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:20:01,560 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:20:01,561 INFO L175 Difference]: Start difference. First operand has 259 places, 528 transitions, 10555 flow. Second operand 15 states and 6373 transitions. [2023-08-31 01:20:01,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 896 transitions, 17622 flow [2023-08-31 01:20:21,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 896 transitions, 17479 flow, removed 71 selfloop flow, removed 3 redundant places. [2023-08-31 01:20:21,654 INFO L231 Difference]: Finished difference. Result has 276 places, 702 transitions, 14937 flow [2023-08-31 01:20:21,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=10450, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=14937, PETRI_PLACES=276, PETRI_TRANSITIONS=702} [2023-08-31 01:20:21,655 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 234 predicate places. [2023-08-31 01:20:21,655 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 702 transitions, 14937 flow [2023-08-31 01:20:21,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 415.5) internal successors, (4155), 10 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:20:21,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:20:21,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:20:21,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-31 01:20:21,656 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)] === [2023-08-31 01:20:21,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:20:21,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1317815394, now seen corresponding path program 15 times [2023-08-31 01:20:21,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:20:21,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337081016] [2023-08-31 01:20:21,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:20:21,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:20:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:20:22,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:20:22,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:20:22,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337081016] [2023-08-31 01:20:22,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337081016] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:20:22,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:20:22,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:20:22,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831468634] [2023-08-31 01:20:22,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:20:22,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:20:22,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:20:22,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:20:22,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:20:23,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-08-31 01:20:23,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 702 transitions, 14937 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:20:23,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:20:23,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-08-31 01:20:23,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:20:42,968 INFO L130 PetriNetUnfolder]: 33320/61333 cut-off events. [2023-08-31 01:20:42,969 INFO L131 PetriNetUnfolder]: For 1000612/1000612 co-relation queries the response was YES. [2023-08-31 01:20:44,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386771 conditions, 61333 events. 33320/61333 cut-off events. For 1000612/1000612 co-relation queries the response was YES. Maximal size of possible extension queue 4178. Compared 633571 event pairs, 13362 based on Foata normal form. 2/61334 useless extension candidates. Maximal degree in co-relation 386654. Up to 28004 conditions per place. [2023-08-31 01:20:44,784 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1005 selfloop transitions, 211 changer transitions 16/1232 dead transitions. [2023-08-31 01:20:44,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 1232 transitions, 25059 flow [2023-08-31 01:20:44,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-31 01:20:44,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-31 01:20:44,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6595 transitions. [2023-08-31 01:20:44,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132205513784461 [2023-08-31 01:20:44,792 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6595 transitions. [2023-08-31 01:20:44,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6595 transitions. [2023-08-31 01:20:44,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:20:44,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6595 transitions. [2023-08-31 01:20:44,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 439.6666666666667) internal successors, (6595), 15 states have internal predecessors, (6595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:20:44,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:20:44,814 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:20:44,815 INFO L175 Difference]: Start difference. First operand has 276 places, 702 transitions, 14937 flow. Second operand 15 states and 6595 transitions. [2023-08-31 01:20:44,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 1232 transitions, 25059 flow [2023-08-31 01:21:15,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 1232 transitions, 24749 flow, removed 155 selfloop flow, removed 1 redundant places. [2023-08-31 01:21:16,013 INFO L231 Difference]: Finished difference. Result has 298 places, 749 transitions, 16646 flow [2023-08-31 01:21:16,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=14759, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=16646, PETRI_PLACES=298, PETRI_TRANSITIONS=749} [2023-08-31 01:21:16,014 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2023-08-31 01:21:16,014 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 749 transitions, 16646 flow [2023-08-31 01:21:16,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:21:16,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:21:16,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:21:16,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-31 01:21:16,015 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)] === [2023-08-31 01:21:16,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:21:16,015 INFO L85 PathProgramCache]: Analyzing trace with hash 178866192, now seen corresponding path program 16 times [2023-08-31 01:21:16,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:21:16,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110378175] [2023-08-31 01:21:16,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:21:16,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:21:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:21:17,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:21:17,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:21:17,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110378175] [2023-08-31 01:21:17,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110378175] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:21:17,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:21:17,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:21:17,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318797056] [2023-08-31 01:21:17,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:21:17,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:21:17,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:21:17,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:21:17,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:21:17,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 1064 [2023-08-31 01:21:17,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 749 transitions, 16646 flow. Second operand has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:21:17,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:21:17,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 1064 [2023-08-31 01:21:17,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:21:40,265 INFO L130 PetriNetUnfolder]: 33317/61347 cut-off events. [2023-08-31 01:21:40,266 INFO L131 PetriNetUnfolder]: For 1014682/1014682 co-relation queries the response was YES. [2023-08-31 01:21:41,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389198 conditions, 61347 events. 33317/61347 cut-off events. For 1014682/1014682 co-relation queries the response was YES. Maximal size of possible extension queue 4180. Compared 634775 event pairs, 11205 based on Foata normal form. 1/61347 useless extension candidates. Maximal degree in co-relation 389071. Up to 28119 conditions per place. [2023-08-31 01:21:42,279 INFO L137 encePairwiseOnDemand]: 1048/1064 looper letters, 403 selfloop transitions, 518 changer transitions 7/928 dead transitions. [2023-08-31 01:21:42,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 928 transitions, 20423 flow [2023-08-31 01:21:42,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-31 01:21:42,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-31 01:21:42,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6412 transitions. [2023-08-31 01:21:42,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017543859649123 [2023-08-31 01:21:42,287 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6412 transitions. [2023-08-31 01:21:42,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6412 transitions. [2023-08-31 01:21:42,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:21:42,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6412 transitions. [2023-08-31 01:21:42,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 427.46666666666664) internal successors, (6412), 15 states have internal predecessors, (6412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:21:42,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:21:42,307 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:21:42,307 INFO L175 Difference]: Start difference. First operand has 298 places, 749 transitions, 16646 flow. Second operand 15 states and 6412 transitions. [2023-08-31 01:21:42,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 928 transitions, 20423 flow [2023-08-31 01:22:11,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 928 transitions, 19968 flow, removed 94 selfloop flow, removed 6 redundant places. [2023-08-31 01:22:11,851 INFO L231 Difference]: Finished difference. Result has 311 places, 768 transitions, 18052 flow [2023-08-31 01:22:11,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=16215, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=502, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=18052, PETRI_PLACES=311, PETRI_TRANSITIONS=768} [2023-08-31 01:22:11,852 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 269 predicate places. [2023-08-31 01:22:11,852 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 768 transitions, 18052 flow [2023-08-31 01:22:11,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:22:11,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:22:11,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:22:11,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-31 01:22:11,853 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)] === [2023-08-31 01:22:11,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:22:11,854 INFO L85 PathProgramCache]: Analyzing trace with hash -317965381, now seen corresponding path program 2 times [2023-08-31 01:22:11,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:22:11,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541080742] [2023-08-31 01:22:11,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:22:11,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:22:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:22:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:22:12,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:22:12,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541080742] [2023-08-31 01:22:12,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541080742] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:22:12,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:22:12,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:22:12,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819968664] [2023-08-31 01:22:12,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:22:12,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:22:12,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:22:12,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:22:12,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:22:12,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1064 [2023-08-31 01:22:12,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 768 transitions, 18052 flow. Second operand has 4 states, 4 states have (on average 453.75) internal successors, (1815), 4 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:22:12,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:22:12,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1064 [2023-08-31 01:22:12,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:22:36,984 INFO L130 PetriNetUnfolder]: 39389/73419 cut-off events. [2023-08-31 01:22:36,985 INFO L131 PetriNetUnfolder]: For 1377659/1377659 co-relation queries the response was YES. [2023-08-31 01:22:39,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480271 conditions, 73419 events. 39389/73419 cut-off events. For 1377659/1377659 co-relation queries the response was YES. Maximal size of possible extension queue 4819. Compared 786743 event pairs, 10546 based on Foata normal form. 789/74207 useless extension candidates. Maximal degree in co-relation 480139. Up to 32138 conditions per place. [2023-08-31 01:22:39,458 INFO L137 encePairwiseOnDemand]: 1056/1064 looper letters, 1096 selfloop transitions, 206 changer transitions 0/1302 dead transitions. [2023-08-31 01:22:39,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 1302 transitions, 32290 flow [2023-08-31 01:22:39,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:22:39,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:22:39,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1870 transitions. [2023-08-31 01:22:39,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393796992481203 [2023-08-31 01:22:39,460 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1870 transitions. [2023-08-31 01:22:39,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1870 transitions. [2023-08-31 01:22:39,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:22:39,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1870 transitions. [2023-08-31 01:22:39,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 467.5) internal successors, (1870), 4 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:22:39,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:22:39,464 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:22:39,464 INFO L175 Difference]: Start difference. First operand has 311 places, 768 transitions, 18052 flow. Second operand 4 states and 1870 transitions. [2023-08-31 01:22:39,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 1302 transitions, 32290 flow [2023-08-31 01:23:25,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 1302 transitions, 31026 flow, removed 178 selfloop flow, removed 5 redundant places. [2023-08-31 01:23:25,030 INFO L231 Difference]: Finished difference. Result has 311 places, 841 transitions, 20192 flow [2023-08-31 01:23:25,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=17068, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=20192, PETRI_PLACES=311, PETRI_TRANSITIONS=841} [2023-08-31 01:23:25,031 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 269 predicate places. [2023-08-31 01:23:25,031 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 841 transitions, 20192 flow [2023-08-31 01:23:25,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 453.75) internal successors, (1815), 4 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:23:25,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:23:25,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:23:25,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-31 01:23:25,032 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)] === [2023-08-31 01:23:25,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:23:25,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1330045670, now seen corresponding path program 17 times [2023-08-31 01:23:25,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:23:25,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295508186] [2023-08-31 01:23:25,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:23:25,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:23:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:23:25,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:23:25,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:23:25,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295508186] [2023-08-31 01:23:25,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295508186] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:23:25,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:23:25,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:23:25,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753906459] [2023-08-31 01:23:25,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:23:25,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:23:25,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:23:25,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:23:25,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:23:26,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 1064 [2023-08-31 01:23:26,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 841 transitions, 20192 flow. Second operand has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:23:26,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:23:26,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 1064 [2023-08-31 01:23:26,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:23:55,602 INFO L130 PetriNetUnfolder]: 41546/77438 cut-off events. [2023-08-31 01:23:55,602 INFO L131 PetriNetUnfolder]: For 1418452/1418452 co-relation queries the response was YES. [2023-08-31 01:23:57,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517543 conditions, 77438 events. 41546/77438 cut-off events. For 1418452/1418452 co-relation queries the response was YES. Maximal size of possible extension queue 5089. Compared 830930 event pairs, 19593 based on Foata normal form. 2/77439 useless extension candidates. Maximal degree in co-relation 517410. Up to 35892 conditions per place. [2023-08-31 01:23:58,207 INFO L137 encePairwiseOnDemand]: 1050/1064 looper letters, 1153 selfloop transitions, 280 changer transitions 16/1449 dead transitions. [2023-08-31 01:23:58,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 1449 transitions, 32823 flow [2023-08-31 01:23:58,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-31 01:23:58,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-31 01:23:58,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7315 transitions. [2023-08-31 01:23:58,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40441176470588236 [2023-08-31 01:23:58,213 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7315 transitions. [2023-08-31 01:23:58,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7315 transitions. [2023-08-31 01:23:58,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:23:58,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7315 transitions. [2023-08-31 01:23:58,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 430.29411764705884) internal successors, (7315), 17 states have internal predecessors, (7315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:23:58,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1064.0) internal successors, (19152), 18 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:23:58,235 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1064.0) internal successors, (19152), 18 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:23:58,236 INFO L175 Difference]: Start difference. First operand has 311 places, 841 transitions, 20192 flow. Second operand 17 states and 7315 transitions. [2023-08-31 01:23:58,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 1449 transitions, 32823 flow [2023-08-31 01:24:56,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 1449 transitions, 32807 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-08-31 01:24:56,269 INFO L231 Difference]: Finished difference. Result has 341 places, 908 transitions, 22973 flow [2023-08-31 01:24:56,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=20190, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=22973, PETRI_PLACES=341, PETRI_TRANSITIONS=908} [2023-08-31 01:24:56,270 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 299 predicate places. [2023-08-31 01:24:56,270 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 908 transitions, 22973 flow [2023-08-31 01:24:56,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:24:56,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:24:56,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:24:56,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-31 01:24:56,271 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:24:56,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:24:56,272 INFO L85 PathProgramCache]: Analyzing trace with hash -857679955, now seen corresponding path program 3 times [2023-08-31 01:24:56,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:24:56,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79456072] [2023-08-31 01:24:56,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:24:56,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:24:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:24:56,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:24:56,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:24:56,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79456072] [2023-08-31 01:24:56,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79456072] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:24:56,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:24:56,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:24:56,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976950680] [2023-08-31 01:24:56,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:24:56,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:24:56,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:24:56,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:24:56,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:24:56,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1064 [2023-08-31 01:24:56,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 908 transitions, 22973 flow. Second operand has 4 states, 4 states have (on average 453.75) internal successors, (1815), 4 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:24:56,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:24:56,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1064 [2023-08-31 01:24:56,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:25:26,136 INFO L130 PetriNetUnfolder]: 42071/76230 cut-off events. [2023-08-31 01:25:26,136 INFO L131 PetriNetUnfolder]: For 1524772/1524772 co-relation queries the response was YES. [2023-08-31 01:25:28,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516578 conditions, 76230 events. 42071/76230 cut-off events. For 1524772/1524772 co-relation queries the response was YES. Maximal size of possible extension queue 4880. Compared 792088 event pairs, 10702 based on Foata normal form. 781/77010 useless extension candidates. Maximal degree in co-relation 516430. Up to 37857 conditions per place. [2023-08-31 01:25:29,228 INFO L137 encePairwiseOnDemand]: 1056/1064 looper letters, 966 selfloop transitions, 269 changer transitions 0/1235 dead transitions. [2023-08-31 01:25:29,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 1235 transitions, 31633 flow [2023-08-31 01:25:29,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:25:29,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:25:29,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1866 transitions. [2023-08-31 01:25:29,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43843984962406013 [2023-08-31 01:25:29,230 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1866 transitions. [2023-08-31 01:25:29,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1866 transitions. [2023-08-31 01:25:29,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:25:29,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1866 transitions. [2023-08-31 01:25:29,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 466.5) internal successors, (1866), 4 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:25:29,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:25:29,235 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:25:29,235 INFO L175 Difference]: Start difference. First operand has 341 places, 908 transitions, 22973 flow. Second operand 4 states and 1866 transitions. [2023-08-31 01:25:29,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 1235 transitions, 31633 flow [2023-08-31 01:26:15,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 1235 transitions, 30772 flow, removed 240 selfloop flow, removed 5 redundant places. [2023-08-31 01:26:15,313 INFO L231 Difference]: Finished difference. Result has 339 places, 942 transitions, 23740 flow [2023-08-31 01:26:15,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=19921, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=836, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=23740, PETRI_PLACES=339, PETRI_TRANSITIONS=942} [2023-08-31 01:26:15,315 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 297 predicate places. [2023-08-31 01:26:15,315 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 942 transitions, 23740 flow [2023-08-31 01:26:15,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 453.75) internal successors, (1815), 4 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:26:15,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:26:15,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:26:15,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-31 01:26:15,316 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:26:15,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:26:15,316 INFO L85 PathProgramCache]: Analyzing trace with hash -777514146, now seen corresponding path program 18 times [2023-08-31 01:26:15,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:26:15,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228239827] [2023-08-31 01:26:15,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:26:15,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:26:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:26:16,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:26:16,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:26:16,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228239827] [2023-08-31 01:26:16,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228239827] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:26:16,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:26:16,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:26:16,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372148093] [2023-08-31 01:26:16,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:26:16,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:26:16,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:26:16,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:26:16,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:26:16,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-08-31 01:26:16,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 942 transitions, 23740 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:26:16,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:26:16,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-08-31 01:26:16,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand