./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-name-comparator-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-name-comparator-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 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 --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 01:16:23,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 01:16:23,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 01:16:23,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 01:16:23,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 01:16:23,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 01:16:23,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 01:16:23,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 01:16:23,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 01:16:23,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 01:16:23,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 01:16:23,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 01:16:23,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 01:16:23,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 01:16:23,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 01:16:23,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 01:16:23,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 01:16:23,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 01:16:23,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 01:16:23,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 01:16:23,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 01:16:23,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 01:16:23,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 01:16:23,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 01:16:23,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 01:16:23,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 01:16:23,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 01:16:23,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 01:16:23,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 01:16:23,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 01:16:23,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 01:16:23,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 01:16:23,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 01:16:23,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 01:16:23,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 01:16:23,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 01:16:23,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 01:16:23,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 01:16:23,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 01:16:23,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 01:16:23,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 01:16:23,439 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 01:16:23,455 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 01:16:23,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 01:16:23,457 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 01:16:23,457 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 01:16:23,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 01:16:23,457 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 01:16:23,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 01:16:23,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 01:16:23,459 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 01:16:23,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 01:16:23,459 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 01:16:23,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 01:16:23,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 01:16:23,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 01:16:23,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 01:16:23,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 01:16:23,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 01:16:23,460 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 01:16:23,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 01:16:23,461 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 01:16:23,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 01:16:23,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 01:16:23,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 01:16:23,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 01:16:23,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:16:23,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 01:16:23,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 01:16:23,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 01:16:23,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 01:16:23,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 01:16:23,462 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 01:16:23,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 01:16:23,462 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 01:16:23,463 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 01:16:23,463 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 01:16:23,463 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 01:16:23,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 01:16:23,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 01:16:23,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 01:16:23,724 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 01:16:23,724 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 01:16:23,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-08-31 01:16:24,625 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 01:16:24,816 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 01:16:24,817 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-08-31 01:16:24,823 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71b7e1ad1/07d7669703c640349adb92963a5f7da6/FLAGd19470169 [2023-08-31 01:16:24,836 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71b7e1ad1/07d7669703c640349adb92963a5f7da6 [2023-08-31 01:16:24,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 01:16:24,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 01:16:24,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 01:16:24,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 01:16:24,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 01:16:24,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:16:24" (1/1) ... [2023-08-31 01:16:24,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25fae55a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:24, skipping insertion in model container [2023-08-31 01:16:24,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:16:24" (1/1) ... [2023-08-31 01:16:24,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 01:16:24,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 01:16:24,979 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-name-comparator-subst.wvr.c[4836,4849] [2023-08-31 01:16:24,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:16:25,001 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 01:16:25,026 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-name-comparator-subst.wvr.c[4836,4849] [2023-08-31 01:16:25,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:16:25,055 INFO L208 MainTranslator]: Completed translation [2023-08-31 01:16:25,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:25 WrapperNode [2023-08-31 01:16:25,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 01:16:25,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 01:16:25,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 01:16:25,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 01:16:25,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:25" (1/1) ... [2023-08-31 01:16:25,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:25" (1/1) ... [2023-08-31 01:16:25,109 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 316 [2023-08-31 01:16:25,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 01:16:25,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 01:16:25,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 01:16:25,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 01:16:25,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:25" (1/1) ... [2023-08-31 01:16:25,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:25" (1/1) ... [2023-08-31 01:16:25,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:25" (1/1) ... [2023-08-31 01:16:25,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:25" (1/1) ... [2023-08-31 01:16:25,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:25" (1/1) ... [2023-08-31 01:16:25,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:25" (1/1) ... [2023-08-31 01:16:25,128 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:25" (1/1) ... [2023-08-31 01:16:25,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:25" (1/1) ... [2023-08-31 01:16:25,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 01:16:25,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 01:16:25,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 01:16:25,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 01:16:25,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:25" (1/1) ... [2023-08-31 01:16:25,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:16:25,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:16:25,169 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 01:16:25,183 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 01:16:25,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 01:16:25,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 01:16:25,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 01:16:25,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 01:16:25,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 01:16:25,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 01:16:25,200 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 01:16:25,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 01:16:25,201 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 01:16:25,201 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 01:16:25,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 01:16:25,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 01:16:25,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 01:16:25,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 01:16:25,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 01:16:25,202 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 01:16:25,332 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 01:16:25,334 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 01:16:25,687 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 01:16:25,695 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 01:16:25,695 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-31 01:16:25,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:16:25 BoogieIcfgContainer [2023-08-31 01:16:25,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 01:16:25,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 01:16:25,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 01:16:25,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 01:16:25,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 01:16:24" (1/3) ... [2023-08-31 01:16:25,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6331a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:16:25, skipping insertion in model container [2023-08-31 01:16:25,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:25" (2/3) ... [2023-08-31 01:16:25,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6331a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:16:25, skipping insertion in model container [2023-08-31 01:16:25,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:16:25" (3/3) ... [2023-08-31 01:16:25,702 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2023-08-31 01:16:25,707 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 01:16:25,713 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 01:16:25,713 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 01:16:25,713 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 01:16:25,858 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 01:16:25,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 360 transitions, 744 flow [2023-08-31 01:16:25,984 INFO L130 PetriNetUnfolder]: 26/357 cut-off events. [2023-08-31 01:16:25,985 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:16:25,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 357 events. 26/357 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 808 event pairs, 0 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 268. Up to 2 conditions per place. [2023-08-31 01:16:25,996 INFO L82 GeneralOperation]: Start removeDead. Operand has 344 places, 360 transitions, 744 flow [2023-08-31 01:16:26,004 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 331 places, 347 transitions, 712 flow [2023-08-31 01:16:26,007 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 01:16:26,012 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 331 places, 347 transitions, 712 flow [2023-08-31 01:16:26,013 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 331 places, 347 transitions, 712 flow [2023-08-31 01:16:26,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 347 transitions, 712 flow [2023-08-31 01:16:26,065 INFO L130 PetriNetUnfolder]: 26/347 cut-off events. [2023-08-31 01:16:26,066 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:16:26,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 347 events. 26/347 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 807 event pairs, 0 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 268. Up to 2 conditions per place. [2023-08-31 01:16:26,076 INFO L119 LiptonReduction]: Number of co-enabled transitions 28350 [2023-08-31 01:16:34,600 INFO L134 LiptonReduction]: Checked pairs total: 26332 [2023-08-31 01:16:34,601 INFO L136 LiptonReduction]: Total number of compositions: 411 [2023-08-31 01:16:34,610 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 01:16:34,615 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;@59d0eeb4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 01:16:34,615 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-31 01:16:34,619 INFO L130 PetriNetUnfolder]: 4/23 cut-off events. [2023-08-31 01:16:34,619 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:16:34,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:34,620 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] [2023-08-31 01:16:34,620 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 01:16:34,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:34,624 INFO L85 PathProgramCache]: Analyzing trace with hash 938001691, now seen corresponding path program 1 times [2023-08-31 01:16:34,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:34,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421988806] [2023-08-31 01:16:34,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:34,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:34,979 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 01:16:34,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:34,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421988806] [2023-08-31 01:16:34,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421988806] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:34,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:34,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 01:16:34,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186267957] [2023-08-31 01:16:34,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:34,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:16:34,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:35,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:16:35,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 01:16:35,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 771 [2023-08-31 01:16:35,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 336.6666666666667) internal successors, (1010), 3 states have internal predecessors, (1010), 0 states have call successors, (0), 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 01:16:35,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:35,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 771 [2023-08-31 01:16:35,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:35,112 INFO L130 PetriNetUnfolder]: 221/328 cut-off events. [2023-08-31 01:16:35,112 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-08-31 01:16:35,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 328 events. 221/328 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 771 event pairs, 138 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 534. Up to 328 conditions per place. [2023-08-31 01:16:35,115 INFO L137 encePairwiseOnDemand]: 768/771 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-08-31 01:16:35,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 25 transitions, 118 flow [2023-08-31 01:16:35,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:16:35,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:16:35,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1016 transitions. [2023-08-31 01:16:35,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43925637699956765 [2023-08-31 01:16:35,132 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1016 transitions. [2023-08-31 01:16:35,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1016 transitions. [2023-08-31 01:16:35,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:35,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1016 transitions. [2023-08-31 01:16:35,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.6666666666667) internal successors, (1016), 3 states have internal predecessors, (1016), 0 states have call successors, (0), 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 01:16:35,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 771.0) internal successors, (3084), 4 states have internal predecessors, (3084), 0 states have call successors, (0), 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 01:16:35,148 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 771.0) internal successors, (3084), 4 states have internal predecessors, (3084), 0 states have call successors, (0), 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 01:16:35,149 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 3 states and 1016 transitions. [2023-08-31 01:16:35,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 25 transitions, 118 flow [2023-08-31 01:16:35,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 106 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 01:16:35,153 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 66 flow [2023-08-31 01:16:35,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2023-08-31 01:16:35,157 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2023-08-31 01:16:35,157 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 66 flow [2023-08-31 01:16:35,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 336.6666666666667) internal successors, (1010), 3 states have internal predecessors, (1010), 0 states have call successors, (0), 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 01:16:35,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:35,158 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] [2023-08-31 01:16:35,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 01:16:35,160 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 01:16:35,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:35,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1524160958, now seen corresponding path program 1 times [2023-08-31 01:16:35,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:35,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13276096] [2023-08-31 01:16:35,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:35,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:35,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:16:35,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:35,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13276096] [2023-08-31 01:16:35,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13276096] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:16:35,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319742538] [2023-08-31 01:16:35,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:35,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:16:35,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:16:35,295 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 01:16:35,324 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 01:16:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:35,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-31 01:16:35,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:16:35,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:16:35,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:16:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:16:35,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319742538] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:16:35,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:16:35,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-31 01:16:35,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385198844] [2023-08-31 01:16:35,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:16:35,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:16:35,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:35,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:16:35,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:16:35,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 771 [2023-08-31 01:16:35,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 331.85714285714283) internal successors, (2323), 7 states have internal predecessors, (2323), 0 states have call successors, (0), 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 01:16:35,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:35,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 771 [2023-08-31 01:16:35,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:35,629 INFO L130 PetriNetUnfolder]: 221/330 cut-off events. [2023-08-31 01:16:35,630 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:16:35,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 330 events. 221/330 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 771 event pairs, 138 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 673. Up to 328 conditions per place. [2023-08-31 01:16:35,631 INFO L137 encePairwiseOnDemand]: 768/771 looper letters, 23 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-08-31 01:16:35,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 128 flow [2023-08-31 01:16:35,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:16:35,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:16:35,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1669 transitions. [2023-08-31 01:16:35,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329442282749676 [2023-08-31 01:16:35,636 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1669 transitions. [2023-08-31 01:16:35,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1669 transitions. [2023-08-31 01:16:35,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:35,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1669 transitions. [2023-08-31 01:16:35,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 333.8) internal successors, (1669), 5 states have internal predecessors, (1669), 0 states have call successors, (0), 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 01:16:35,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 771.0) internal successors, (4626), 6 states have internal predecessors, (4626), 0 states have call successors, (0), 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 01:16:35,644 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 771.0) internal successors, (4626), 6 states have internal predecessors, (4626), 0 states have call successors, (0), 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 01:16:35,644 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 66 flow. Second operand 5 states and 1669 transitions. [2023-08-31 01:16:35,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 128 flow [2023-08-31 01:16:35,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 124 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 01:16:35,646 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 88 flow [2023-08-31 01:16:35,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=88, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-08-31 01:16:35,647 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-08-31 01:16:35,647 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 88 flow [2023-08-31 01:16:35,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.85714285714283) internal successors, (2323), 7 states have internal predecessors, (2323), 0 states have call successors, (0), 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 01:16:35,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:35,648 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:35,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-31 01:16:35,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:16:35,855 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 01:16:35,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:35,856 INFO L85 PathProgramCache]: Analyzing trace with hash -793936030, now seen corresponding path program 2 times [2023-08-31 01:16:35,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:35,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105421210] [2023-08-31 01:16:35,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:35,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:36,431 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 01:16:36,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:36,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105421210] [2023-08-31 01:16:36,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105421210] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:36,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:36,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 01:16:36,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709348839] [2023-08-31 01:16:36,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:36,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:16:36,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:36,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:16:36,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-31 01:16:36,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 771 [2023-08-31 01:16:36,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 88 flow. Second operand has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:16:36,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:36,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 771 [2023-08-31 01:16:36,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:36,873 INFO L130 PetriNetUnfolder]: 391/589 cut-off events. [2023-08-31 01:16:36,874 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-31 01:16:36,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1217 conditions, 589 events. 391/589 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1862 event pairs, 138 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 1190. Up to 331 conditions per place. [2023-08-31 01:16:36,876 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 59 selfloop transitions, 5 changer transitions 10/74 dead transitions. [2023-08-31 01:16:36,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 74 transitions, 341 flow [2023-08-31 01:16:36,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:16:36,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:16:36,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1884 transitions. [2023-08-31 01:16:36,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4072632944228275 [2023-08-31 01:16:36,880 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1884 transitions. [2023-08-31 01:16:36,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1884 transitions. [2023-08-31 01:16:36,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:36,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1884 transitions. [2023-08-31 01:16:36,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 314.0) internal successors, (1884), 6 states have internal predecessors, (1884), 0 states have call successors, (0), 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 01:16:36,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 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 01:16:36,890 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 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 01:16:36,890 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 88 flow. Second operand 6 states and 1884 transitions. [2023-08-31 01:16:36,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 74 transitions, 341 flow [2023-08-31 01:16:36,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 74 transitions, 331 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-31 01:16:36,893 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 116 flow [2023-08-31 01:16:36,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2023-08-31 01:16:36,894 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2023-08-31 01:16:36,895 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 116 flow [2023-08-31 01:16:36,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:16:36,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:36,896 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:36,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 01:16:36,896 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 01:16:36,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:36,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1410407670, now seen corresponding path program 3 times [2023-08-31 01:16:36,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:36,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857301862] [2023-08-31 01:16:36,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:36,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:37,446 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 01:16:37,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:37,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857301862] [2023-08-31 01:16:37,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857301862] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:37,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:37,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 01:16:37,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586706541] [2023-08-31 01:16:37,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:37,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:16:37,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:37,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:16:37,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-31 01:16:37,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 771 [2023-08-31 01:16:37,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:16:37,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:37,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 771 [2023-08-31 01:16:37,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:37,877 INFO L130 PetriNetUnfolder]: 598/896 cut-off events. [2023-08-31 01:16:37,878 INFO L131 PetriNetUnfolder]: For 447/447 co-relation queries the response was YES. [2023-08-31 01:16:37,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2439 conditions, 896 events. 598/896 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3127 event pairs, 238 based on Foata normal form. 1/695 useless extension candidates. Maximal degree in co-relation 2416. Up to 553 conditions per place. [2023-08-31 01:16:37,881 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 61 selfloop transitions, 7 changer transitions 10/78 dead transitions. [2023-08-31 01:16:37,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 78 transitions, 416 flow [2023-08-31 01:16:37,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:16:37,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:16:37,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1880 transitions. [2023-08-31 01:16:37,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40639861651534803 [2023-08-31 01:16:37,885 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1880 transitions. [2023-08-31 01:16:37,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1880 transitions. [2023-08-31 01:16:37,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:37,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1880 transitions. [2023-08-31 01:16:37,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 313.3333333333333) internal successors, (1880), 6 states have internal predecessors, (1880), 0 states have call successors, (0), 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 01:16:37,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 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 01:16:37,895 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 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 01:16:37,895 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 116 flow. Second operand 6 states and 1880 transitions. [2023-08-31 01:16:37,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 78 transitions, 416 flow [2023-08-31 01:16:37,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 78 transitions, 395 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-31 01:16:37,897 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 158 flow [2023-08-31 01:16:37,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-08-31 01:16:37,898 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2023-08-31 01:16:37,898 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 158 flow [2023-08-31 01:16:37,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:16:37,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:37,899 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:37,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 01:16:37,899 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 01:16:37,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:37,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1289977774, now seen corresponding path program 4 times [2023-08-31 01:16:37,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:37,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286949572] [2023-08-31 01:16:37,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:37,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:38,437 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 01:16:38,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:38,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286949572] [2023-08-31 01:16:38,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286949572] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:38,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:38,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:16:38,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203043519] [2023-08-31 01:16:38,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:38,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:16:38,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:38,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:16:38,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:16:38,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 771 [2023-08-31 01:16:38,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 158 flow. Second operand has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 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 01:16:38,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:38,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 771 [2023-08-31 01:16:38,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:39,204 INFO L130 PetriNetUnfolder]: 1264/1955 cut-off events. [2023-08-31 01:16:39,204 INFO L131 PetriNetUnfolder]: For 2770/2770 co-relation queries the response was YES. [2023-08-31 01:16:39,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6252 conditions, 1955 events. 1264/1955 cut-off events. For 2770/2770 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8935 event pairs, 428 based on Foata normal form. 2/1613 useless extension candidates. Maximal degree in co-relation 6222. Up to 875 conditions per place. [2023-08-31 01:16:39,212 INFO L137 encePairwiseOnDemand]: 761/771 looper letters, 108 selfloop transitions, 14 changer transitions 3/125 dead transitions. [2023-08-31 01:16:39,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 125 transitions, 822 flow [2023-08-31 01:16:39,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:16:39,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:16:39,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2209 transitions. [2023-08-31 01:16:39,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40930146377617194 [2023-08-31 01:16:39,217 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2209 transitions. [2023-08-31 01:16:39,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2209 transitions. [2023-08-31 01:16:39,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:39,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2209 transitions. [2023-08-31 01:16:39,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 315.57142857142856) internal successors, (2209), 7 states have internal predecessors, (2209), 0 states have call successors, (0), 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 01:16:39,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:39,228 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:39,228 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 158 flow. Second operand 7 states and 2209 transitions. [2023-08-31 01:16:39,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 125 transitions, 822 flow [2023-08-31 01:16:39,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 125 transitions, 771 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-08-31 01:16:39,237 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 298 flow [2023-08-31 01:16:39,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=298, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-08-31 01:16:39,239 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2023-08-31 01:16:39,239 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 298 flow [2023-08-31 01:16:39,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 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 01:16:39,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:39,241 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:39,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 01:16:39,241 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 01:16:39,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:39,242 INFO L85 PathProgramCache]: Analyzing trace with hash 769737702, now seen corresponding path program 5 times [2023-08-31 01:16:39,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:39,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618072594] [2023-08-31 01:16:39,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:39,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:39,940 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 01:16:39,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:39,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618072594] [2023-08-31 01:16:39,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618072594] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:39,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:39,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:16:39,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854144242] [2023-08-31 01:16:39,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:39,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:16:39,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:39,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:16:39,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:16:40,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 771 [2023-08-31 01:16:40,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 298 flow. Second operand has 8 states, 8 states have (on average 299.625) internal successors, (2397), 8 states have internal predecessors, (2397), 0 states have call successors, (0), 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 01:16:40,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:40,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 771 [2023-08-31 01:16:40,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:40,987 INFO L130 PetriNetUnfolder]: 1619/2534 cut-off events. [2023-08-31 01:16:40,987 INFO L131 PetriNetUnfolder]: For 5277/5277 co-relation queries the response was YES. [2023-08-31 01:16:40,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9384 conditions, 2534 events. 1619/2534 cut-off events. For 5277/5277 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 12597 event pairs, 224 based on Foata normal form. 2/2188 useless extension candidates. Maximal degree in co-relation 9350. Up to 1584 conditions per place. [2023-08-31 01:16:40,998 INFO L137 encePairwiseOnDemand]: 761/771 looper letters, 78 selfloop transitions, 33 changer transitions 3/114 dead transitions. [2023-08-31 01:16:40,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 114 transitions, 836 flow [2023-08-31 01:16:40,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:16:40,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:16:41,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2154 transitions. [2023-08-31 01:16:41,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3991106170094497 [2023-08-31 01:16:41,003 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2154 transitions. [2023-08-31 01:16:41,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2154 transitions. [2023-08-31 01:16:41,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:41,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2154 transitions. [2023-08-31 01:16:41,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 307.7142857142857) internal successors, (2154), 7 states have internal predecessors, (2154), 0 states have call successors, (0), 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 01:16:41,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:41,012 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:41,012 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 298 flow. Second operand 7 states and 2154 transitions. [2023-08-31 01:16:41,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 114 transitions, 836 flow [2023-08-31 01:16:41,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 114 transitions, 813 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-31 01:16:41,020 INFO L231 Difference]: Finished difference. Result has 64 places, 70 transitions, 596 flow [2023-08-31 01:16:41,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=596, PETRI_PLACES=64, PETRI_TRANSITIONS=70} [2023-08-31 01:16:41,020 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2023-08-31 01:16:41,020 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 70 transitions, 596 flow [2023-08-31 01:16:41,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 299.625) internal successors, (2397), 8 states have internal predecessors, (2397), 0 states have call successors, (0), 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 01:16:41,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:41,021 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:41,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 01:16:41,022 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 01:16:41,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:41,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1478770490, now seen corresponding path program 6 times [2023-08-31 01:16:41,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:41,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707505618] [2023-08-31 01:16:41,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:41,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:41,376 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 01:16:41,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:41,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707505618] [2023-08-31 01:16:41,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707505618] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:41,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:41,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 01:16:41,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090212692] [2023-08-31 01:16:41,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:41,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:16:41,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:41,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:16:41,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-31 01:16:41,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 771 [2023-08-31 01:16:41,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 70 transitions, 596 flow. Second operand has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:16:41,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:41,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 771 [2023-08-31 01:16:41,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:41,940 INFO L130 PetriNetUnfolder]: 1623/2565 cut-off events. [2023-08-31 01:16:41,940 INFO L131 PetriNetUnfolder]: For 9351/9351 co-relation queries the response was YES. [2023-08-31 01:16:41,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11143 conditions, 2565 events. 1623/2565 cut-off events. For 9351/9351 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12669 event pairs, 490 based on Foata normal form. 3/2218 useless extension candidates. Maximal degree in co-relation 11104. Up to 1223 conditions per place. [2023-08-31 01:16:41,954 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 92 selfloop transitions, 19 changer transitions 12/123 dead transitions. [2023-08-31 01:16:41,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 123 transitions, 1110 flow [2023-08-31 01:16:41,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:16:41,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:16:41,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1883 transitions. [2023-08-31 01:16:41,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40704712494595763 [2023-08-31 01:16:41,958 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1883 transitions. [2023-08-31 01:16:41,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1883 transitions. [2023-08-31 01:16:41,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:41,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1883 transitions. [2023-08-31 01:16:41,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 313.8333333333333) internal successors, (1883), 6 states have internal predecessors, (1883), 0 states have call successors, (0), 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 01:16:41,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 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 01:16:41,965 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 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 01:16:41,965 INFO L175 Difference]: Start difference. First operand has 64 places, 70 transitions, 596 flow. Second operand 6 states and 1883 transitions. [2023-08-31 01:16:41,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 123 transitions, 1110 flow [2023-08-31 01:16:41,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 123 transitions, 1046 flow, removed 29 selfloop flow, removed 1 redundant places. [2023-08-31 01:16:41,980 INFO L231 Difference]: Finished difference. Result has 72 places, 76 transitions, 676 flow [2023-08-31 01:16:41,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=676, PETRI_PLACES=72, PETRI_TRANSITIONS=76} [2023-08-31 01:16:41,981 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2023-08-31 01:16:41,981 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 676 flow [2023-08-31 01:16:41,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:16:41,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:41,981 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:41,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 01:16:41,982 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 01:16:41,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:41,982 INFO L85 PathProgramCache]: Analyzing trace with hash 337044488, now seen corresponding path program 7 times [2023-08-31 01:16:41,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:41,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776574844] [2023-08-31 01:16:41,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:41,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:42,387 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 01:16:42,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:42,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776574844] [2023-08-31 01:16:42,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776574844] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:42,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:42,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 01:16:42,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321332348] [2023-08-31 01:16:42,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:42,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:16:42,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:42,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:16:42,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 01:16:42,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 771 [2023-08-31 01:16:42,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 76 transitions, 676 flow. Second operand has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:16:42,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:42,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 771 [2023-08-31 01:16:42,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:43,113 INFO L130 PetriNetUnfolder]: 1595/2508 cut-off events. [2023-08-31 01:16:43,113 INFO L131 PetriNetUnfolder]: For 10169/10169 co-relation queries the response was YES. [2023-08-31 01:16:43,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11459 conditions, 2508 events. 1595/2508 cut-off events. For 10169/10169 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 12343 event pairs, 530 based on Foata normal form. 2/2162 useless extension candidates. Maximal degree in co-relation 11416. Up to 1479 conditions per place. [2023-08-31 01:16:43,127 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 97 selfloop transitions, 29 changer transitions 15/141 dead transitions. [2023-08-31 01:16:43,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 141 transitions, 1348 flow [2023-08-31 01:16:43,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:16:43,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:16:43,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1887 transitions. [2023-08-31 01:16:43,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4079118028534371 [2023-08-31 01:16:43,131 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1887 transitions. [2023-08-31 01:16:43,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1887 transitions. [2023-08-31 01:16:43,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:43,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1887 transitions. [2023-08-31 01:16:43,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 314.5) internal successors, (1887), 6 states have internal predecessors, (1887), 0 states have call successors, (0), 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 01:16:43,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 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 01:16:43,139 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 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 01:16:43,139 INFO L175 Difference]: Start difference. First operand has 72 places, 76 transitions, 676 flow. Second operand 6 states and 1887 transitions. [2023-08-31 01:16:43,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 141 transitions, 1348 flow [2023-08-31 01:16:43,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 141 transitions, 1310 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-31 01:16:43,155 INFO L231 Difference]: Finished difference. Result has 77 places, 82 transitions, 828 flow [2023-08-31 01:16:43,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=828, PETRI_PLACES=77, PETRI_TRANSITIONS=82} [2023-08-31 01:16:43,155 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2023-08-31 01:16:43,156 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 82 transitions, 828 flow [2023-08-31 01:16:43,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:16:43,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:43,156 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:43,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 01:16:43,157 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 01:16:43,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:43,157 INFO L85 PathProgramCache]: Analyzing trace with hash -97285908, now seen corresponding path program 8 times [2023-08-31 01:16:43,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:43,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333565611] [2023-08-31 01:16:43,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:43,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:43,472 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 01:16:43,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:43,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333565611] [2023-08-31 01:16:43,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333565611] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:43,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:43,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 01:16:43,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328024363] [2023-08-31 01:16:43,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:43,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:16:43,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:43,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:16:43,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 01:16:43,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 771 [2023-08-31 01:16:43,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 82 transitions, 828 flow. Second operand has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:16:43,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:43,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 771 [2023-08-31 01:16:43,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:44,075 INFO L130 PetriNetUnfolder]: 1565/2439 cut-off events. [2023-08-31 01:16:44,076 INFO L131 PetriNetUnfolder]: For 10775/10775 co-relation queries the response was YES. [2023-08-31 01:16:44,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11350 conditions, 2439 events. 1565/2439 cut-off events. For 10775/10775 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11714 event pairs, 530 based on Foata normal form. 3/2096 useless extension candidates. Maximal degree in co-relation 11305. Up to 1479 conditions per place. [2023-08-31 01:16:44,088 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 91 selfloop transitions, 26 changer transitions 15/132 dead transitions. [2023-08-31 01:16:44,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 132 transitions, 1328 flow [2023-08-31 01:16:44,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:16:44,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:16:44,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1883 transitions. [2023-08-31 01:16:44,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40704712494595763 [2023-08-31 01:16:44,092 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1883 transitions. [2023-08-31 01:16:44,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1883 transitions. [2023-08-31 01:16:44,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:44,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1883 transitions. [2023-08-31 01:16:44,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 313.8333333333333) internal successors, (1883), 6 states have internal predecessors, (1883), 0 states have call successors, (0), 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 01:16:44,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 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 01:16:44,099 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 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 01:16:44,099 INFO L175 Difference]: Start difference. First operand has 77 places, 82 transitions, 828 flow. Second operand 6 states and 1883 transitions. [2023-08-31 01:16:44,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 132 transitions, 1328 flow [2023-08-31 01:16:44,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 132 transitions, 1320 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-31 01:16:44,114 INFO L231 Difference]: Finished difference. Result has 82 places, 80 transitions, 869 flow [2023-08-31 01:16:44,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=869, PETRI_PLACES=82, PETRI_TRANSITIONS=80} [2023-08-31 01:16:44,115 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2023-08-31 01:16:44,115 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 80 transitions, 869 flow [2023-08-31 01:16:44,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:16:44,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:44,116 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:44,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 01:16:44,116 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 01:16:44,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:44,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1951623602, now seen corresponding path program 9 times [2023-08-31 01:16:44,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:44,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333989327] [2023-08-31 01:16:44,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:44,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:44,422 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 01:16:44,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:44,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333989327] [2023-08-31 01:16:44,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333989327] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:44,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:44,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 01:16:44,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942299081] [2023-08-31 01:16:44,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:44,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:16:44,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:44,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:16:44,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 01:16:44,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 771 [2023-08-31 01:16:44,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 869 flow. Second operand has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:16:44,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:44,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 771 [2023-08-31 01:16:44,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:44,976 INFO L130 PetriNetUnfolder]: 1537/2381 cut-off events. [2023-08-31 01:16:44,976 INFO L131 PetriNetUnfolder]: For 12541/12541 co-relation queries the response was YES. [2023-08-31 01:16:44,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11557 conditions, 2381 events. 1537/2381 cut-off events. For 12541/12541 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11179 event pairs, 484 based on Foata normal form. 3/2040 useless extension candidates. Maximal degree in co-relation 11510. Up to 1223 conditions per place. [2023-08-31 01:16:44,987 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 88 selfloop transitions, 26 changer transitions 12/126 dead transitions. [2023-08-31 01:16:44,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 126 transitions, 1333 flow [2023-08-31 01:16:44,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:16:44,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:16:44,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1881 transitions. [2023-08-31 01:16:44,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066147859922179 [2023-08-31 01:16:44,991 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1881 transitions. [2023-08-31 01:16:44,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1881 transitions. [2023-08-31 01:16:44,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:44,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1881 transitions. [2023-08-31 01:16:44,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 313.5) internal successors, (1881), 6 states have internal predecessors, (1881), 0 states have call successors, (0), 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 01:16:44,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 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 01:16:44,998 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 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 01:16:44,999 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 869 flow. Second operand 6 states and 1881 transitions. [2023-08-31 01:16:44,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 126 transitions, 1333 flow [2023-08-31 01:16:45,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 126 transitions, 1290 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-31 01:16:45,016 INFO L231 Difference]: Finished difference. Result has 86 places, 82 transitions, 920 flow [2023-08-31 01:16:45,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=920, PETRI_PLACES=86, PETRI_TRANSITIONS=82} [2023-08-31 01:16:45,017 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2023-08-31 01:16:45,017 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 82 transitions, 920 flow [2023-08-31 01:16:45,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:16:45,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:45,018 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:45,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 01:16:45,018 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 01:16:45,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:45,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1598507779, now seen corresponding path program 1 times [2023-08-31 01:16:45,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:45,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516759999] [2023-08-31 01:16:45,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:45,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:45,311 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:16:45,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:45,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516759999] [2023-08-31 01:16:45,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516759999] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:45,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:45,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:16:45,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755063326] [2023-08-31 01:16:45,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:45,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:16:45,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:45,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:16:45,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:16:45,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 771 [2023-08-31 01:16:45,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 920 flow. Second operand has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 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 01:16:45,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:45,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 771 [2023-08-31 01:16:45,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:46,145 INFO L130 PetriNetUnfolder]: 2107/3260 cut-off events. [2023-08-31 01:16:46,145 INFO L131 PetriNetUnfolder]: For 20971/20971 co-relation queries the response was YES. [2023-08-31 01:16:46,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16124 conditions, 3260 events. 2107/3260 cut-off events. For 20971/20971 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 16865 event pairs, 424 based on Foata normal form. 10/2800 useless extension candidates. Maximal degree in co-relation 16075. Up to 1161 conditions per place. [2023-08-31 01:16:46,160 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 217 selfloop transitions, 23 changer transitions 0/240 dead transitions. [2023-08-31 01:16:46,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 240 transitions, 2960 flow [2023-08-31 01:16:46,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:16:46,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:16:46,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2252 transitions. [2023-08-31 01:16:46,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41726885306651845 [2023-08-31 01:16:46,172 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2252 transitions. [2023-08-31 01:16:46,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2252 transitions. [2023-08-31 01:16:46,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:46,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2252 transitions. [2023-08-31 01:16:46,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.7142857142857) internal successors, (2252), 7 states have internal predecessors, (2252), 0 states have call successors, (0), 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 01:16:46,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:46,184 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:46,184 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 920 flow. Second operand 7 states and 2252 transitions. [2023-08-31 01:16:46,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 240 transitions, 2960 flow [2023-08-31 01:16:46,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 240 transitions, 2863 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-08-31 01:16:46,209 INFO L231 Difference]: Finished difference. Result has 94 places, 98 transitions, 1212 flow [2023-08-31 01:16:46,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1212, PETRI_PLACES=94, PETRI_TRANSITIONS=98} [2023-08-31 01:16:46,210 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2023-08-31 01:16:46,211 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 98 transitions, 1212 flow [2023-08-31 01:16:46,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 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 01:16:46,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:46,211 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:46,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 01:16:46,212 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 01:16:46,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:46,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1705182456, now seen corresponding path program 1 times [2023-08-31 01:16:46,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:46,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686566105] [2023-08-31 01:16:46,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:46,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:46,461 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:16:46,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:46,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686566105] [2023-08-31 01:16:46,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686566105] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:46,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:46,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:16:46,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001550152] [2023-08-31 01:16:46,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:46,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:16:46,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:46,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:16:46,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:16:46,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:16:46,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 98 transitions, 1212 flow. Second operand has 8 states, 8 states have (on average 313.75) internal successors, (2510), 8 states have internal predecessors, (2510), 0 states have call successors, (0), 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 01:16:46,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:46,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:16:46,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:47,377 INFO L130 PetriNetUnfolder]: 2345/3622 cut-off events. [2023-08-31 01:16:47,377 INFO L131 PetriNetUnfolder]: For 22615/22615 co-relation queries the response was YES. [2023-08-31 01:16:47,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18647 conditions, 3622 events. 2345/3622 cut-off events. For 22615/22615 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 18662 event pairs, 320 based on Foata normal form. 4/3332 useless extension candidates. Maximal degree in co-relation 18594. Up to 1578 conditions per place. [2023-08-31 01:16:47,395 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 143 selfloop transitions, 28 changer transitions 0/171 dead transitions. [2023-08-31 01:16:47,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 171 transitions, 2057 flow [2023-08-31 01:16:47,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:16:47,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:16:47,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2254 transitions. [2023-08-31 01:16:47,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176394293125811 [2023-08-31 01:16:47,400 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2254 transitions. [2023-08-31 01:16:47,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2254 transitions. [2023-08-31 01:16:47,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:47,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2254 transitions. [2023-08-31 01:16:47,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 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 01:16:47,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:47,409 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:47,409 INFO L175 Difference]: Start difference. First operand has 94 places, 98 transitions, 1212 flow. Second operand 7 states and 2254 transitions. [2023-08-31 01:16:47,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 171 transitions, 2057 flow [2023-08-31 01:16:47,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 171 transitions, 2007 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-08-31 01:16:47,451 INFO L231 Difference]: Finished difference. Result has 103 places, 106 transitions, 1404 flow [2023-08-31 01:16:47,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1404, PETRI_PLACES=103, PETRI_TRANSITIONS=106} [2023-08-31 01:16:47,451 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2023-08-31 01:16:47,451 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 106 transitions, 1404 flow [2023-08-31 01:16:47,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 313.75) internal successors, (2510), 8 states have internal predecessors, (2510), 0 states have call successors, (0), 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 01:16:47,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:47,452 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:47,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 01:16:47,452 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 01:16:47,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:47,453 INFO L85 PathProgramCache]: Analyzing trace with hash 740274830, now seen corresponding path program 2 times [2023-08-31 01:16:47,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:47,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081322718] [2023-08-31 01:16:47,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:47,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:47,720 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:16:47,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:47,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081322718] [2023-08-31 01:16:47,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081322718] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:47,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:47,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:16:47,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425316262] [2023-08-31 01:16:47,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:47,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:16:47,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:47,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:16:47,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:16:48,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-31 01:16:48,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 106 transitions, 1404 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:16:48,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:48,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-31 01:16:48,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:48,785 INFO L130 PetriNetUnfolder]: 2379/3710 cut-off events. [2023-08-31 01:16:48,786 INFO L131 PetriNetUnfolder]: For 32210/32210 co-relation queries the response was YES. [2023-08-31 01:16:48,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19766 conditions, 3710 events. 2379/3710 cut-off events. For 32210/32210 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 19661 event pairs, 354 based on Foata normal form. 6/3410 useless extension candidates. Maximal degree in co-relation 19709. Up to 1201 conditions per place. [2023-08-31 01:16:48,806 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 166 selfloop transitions, 88 changer transitions 3/257 dead transitions. [2023-08-31 01:16:48,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 257 transitions, 3337 flow [2023-08-31 01:16:48,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 01:16:48,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 01:16:48,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3493 transitions. [2023-08-31 01:16:48,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41186180874896827 [2023-08-31 01:16:48,813 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3493 transitions. [2023-08-31 01:16:48,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3493 transitions. [2023-08-31 01:16:48,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:48,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3493 transitions. [2023-08-31 01:16:48,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 317.54545454545456) internal successors, (3493), 11 states have internal predecessors, (3493), 0 states have call successors, (0), 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 01:16:48,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 771.0) internal successors, (9252), 12 states have internal predecessors, (9252), 0 states have call successors, (0), 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 01:16:48,825 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 771.0) internal successors, (9252), 12 states have internal predecessors, (9252), 0 states have call successors, (0), 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 01:16:48,825 INFO L175 Difference]: Start difference. First operand has 103 places, 106 transitions, 1404 flow. Second operand 11 states and 3493 transitions. [2023-08-31 01:16:48,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 257 transitions, 3337 flow [2023-08-31 01:16:48,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 257 transitions, 3171 flow, removed 58 selfloop flow, removed 2 redundant places. [2023-08-31 01:16:48,872 INFO L231 Difference]: Finished difference. Result has 119 places, 156 transitions, 2288 flow [2023-08-31 01:16:48,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2288, PETRI_PLACES=119, PETRI_TRANSITIONS=156} [2023-08-31 01:16:48,874 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2023-08-31 01:16:48,874 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 156 transitions, 2288 flow [2023-08-31 01:16:48,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:16:48,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:48,875 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:48,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 01:16:48,875 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 01:16:48,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:48,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1868110369, now seen corresponding path program 2 times [2023-08-31 01:16:48,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:48,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199450531] [2023-08-31 01:16:48,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:48,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:49,134 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:16:49,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:49,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199450531] [2023-08-31 01:16:49,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199450531] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:49,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:49,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:16:49,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136700574] [2023-08-31 01:16:49,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:49,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:16:49,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:49,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:16:49,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:16:49,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 771 [2023-08-31 01:16:49,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 156 transitions, 2288 flow. Second operand has 8 states, 8 states have (on average 307.75) internal successors, (2462), 8 states have internal predecessors, (2462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:16:49,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:49,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 771 [2023-08-31 01:16:49,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:49,981 INFO L130 PetriNetUnfolder]: 2632/4095 cut-off events. [2023-08-31 01:16:49,981 INFO L131 PetriNetUnfolder]: For 37908/37908 co-relation queries the response was YES. [2023-08-31 01:16:49,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23548 conditions, 4095 events. 2632/4095 cut-off events. For 37908/37908 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 21943 event pairs, 360 based on Foata normal form. 10/4005 useless extension candidates. Maximal degree in co-relation 23483. Up to 1949 conditions per place. [2023-08-31 01:16:50,001 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 170 selfloop transitions, 62 changer transitions 0/232 dead transitions. [2023-08-31 01:16:50,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 232 transitions, 3301 flow [2023-08-31 01:16:50,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:16:50,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:16:50,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2220 transitions. [2023-08-31 01:16:50,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4113396331295164 [2023-08-31 01:16:50,005 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2220 transitions. [2023-08-31 01:16:50,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2220 transitions. [2023-08-31 01:16:50,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:50,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2220 transitions. [2023-08-31 01:16:50,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 317.14285714285717) internal successors, (2220), 7 states have internal predecessors, (2220), 0 states have call successors, (0), 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 01:16:50,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:50,012 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:50,013 INFO L175 Difference]: Start difference. First operand has 119 places, 156 transitions, 2288 flow. Second operand 7 states and 2220 transitions. [2023-08-31 01:16:50,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 232 transitions, 3301 flow [2023-08-31 01:16:50,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 232 transitions, 3149 flow, removed 45 selfloop flow, removed 4 redundant places. [2023-08-31 01:16:50,090 INFO L231 Difference]: Finished difference. Result has 125 places, 161 transitions, 2422 flow [2023-08-31 01:16:50,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2151, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2422, PETRI_PLACES=125, PETRI_TRANSITIONS=161} [2023-08-31 01:16:50,091 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2023-08-31 01:16:50,091 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 161 transitions, 2422 flow [2023-08-31 01:16:50,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 307.75) internal successors, (2462), 8 states have internal predecessors, (2462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:16:50,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:50,091 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:50,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-31 01:16:50,092 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 01:16:50,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:50,092 INFO L85 PathProgramCache]: Analyzing trace with hash -88271522, now seen corresponding path program 3 times [2023-08-31 01:16:50,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:50,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181779556] [2023-08-31 01:16:50,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:50,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:50,325 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:16:50,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:50,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181779556] [2023-08-31 01:16:50,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181779556] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:50,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:50,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:16:50,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511460972] [2023-08-31 01:16:50,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:50,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:16:50,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:50,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:16:50,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:16:50,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-31 01:16:50,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 161 transitions, 2422 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:16:50,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:50,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-31 01:16:50,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:51,209 INFO L130 PetriNetUnfolder]: 2656/4141 cut-off events. [2023-08-31 01:16:51,210 INFO L131 PetriNetUnfolder]: For 44803/44803 co-relation queries the response was YES. [2023-08-31 01:16:51,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23933 conditions, 4141 events. 2656/4141 cut-off events. For 44803/44803 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 22373 event pairs, 510 based on Foata normal form. 8/4049 useless extension candidates. Maximal degree in co-relation 23867. Up to 1987 conditions per place. [2023-08-31 01:16:51,233 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 239 selfloop transitions, 45 changer transitions 0/284 dead transitions. [2023-08-31 01:16:51,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 284 transitions, 4336 flow [2023-08-31 01:16:51,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:16:51,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:16:51,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2251 transitions. [2023-08-31 01:16:51,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41708356494348714 [2023-08-31 01:16:51,237 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2251 transitions. [2023-08-31 01:16:51,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2251 transitions. [2023-08-31 01:16:51,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:51,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2251 transitions. [2023-08-31 01:16:51,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.57142857142856) internal successors, (2251), 7 states have internal predecessors, (2251), 0 states have call successors, (0), 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 01:16:51,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:51,245 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:51,245 INFO L175 Difference]: Start difference. First operand has 125 places, 161 transitions, 2422 flow. Second operand 7 states and 2251 transitions. [2023-08-31 01:16:51,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 284 transitions, 4336 flow [2023-08-31 01:16:51,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 284 transitions, 4206 flow, removed 21 selfloop flow, removed 2 redundant places. [2023-08-31 01:16:51,324 INFO L231 Difference]: Finished difference. Result has 132 places, 171 transitions, 2637 flow [2023-08-31 01:16:51,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2637, PETRI_PLACES=132, PETRI_TRANSITIONS=171} [2023-08-31 01:16:51,325 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2023-08-31 01:16:51,325 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 171 transitions, 2637 flow [2023-08-31 01:16:51,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:16:51,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:51,326 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:51,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-31 01:16:51,326 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 01:16:51,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:51,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1399279322, now seen corresponding path program 4 times [2023-08-31 01:16:51,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:51,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801464629] [2023-08-31 01:16:51,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:51,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:51,630 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:16:51,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:51,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801464629] [2023-08-31 01:16:51,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801464629] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:51,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:51,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:16:51,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895359022] [2023-08-31 01:16:51,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:51,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:16:51,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:51,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:16:51,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:16:51,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 771 [2023-08-31 01:16:51,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 171 transitions, 2637 flow. Second operand has 7 states, 7 states have (on average 309.14285714285717) internal successors, (2164), 7 states have internal predecessors, (2164), 0 states have call successors, (0), 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 01:16:51,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:51,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 771 [2023-08-31 01:16:51,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:52,551 INFO L130 PetriNetUnfolder]: 2650/4135 cut-off events. [2023-08-31 01:16:52,552 INFO L131 PetriNetUnfolder]: For 44143/44143 co-relation queries the response was YES. [2023-08-31 01:16:52,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24232 conditions, 4135 events. 2650/4135 cut-off events. For 44143/44143 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 22382 event pairs, 508 based on Foata normal form. 6/4041 useless extension candidates. Maximal degree in co-relation 24163. Up to 1987 conditions per place. [2023-08-31 01:16:52,578 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 229 selfloop transitions, 44 changer transitions 8/281 dead transitions. [2023-08-31 01:16:52,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 281 transitions, 4328 flow [2023-08-31 01:16:52,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:16:52,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:16:52,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2224 transitions. [2023-08-31 01:16:52,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41208078562164163 [2023-08-31 01:16:52,582 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2224 transitions. [2023-08-31 01:16:52,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2224 transitions. [2023-08-31 01:16:52,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:52,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2224 transitions. [2023-08-31 01:16:52,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 317.7142857142857) internal successors, (2224), 7 states have internal predecessors, (2224), 0 states have call successors, (0), 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 01:16:52,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:52,589 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:52,589 INFO L175 Difference]: Start difference. First operand has 132 places, 171 transitions, 2637 flow. Second operand 7 states and 2224 transitions. [2023-08-31 01:16:52,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 281 transitions, 4328 flow [2023-08-31 01:16:52,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 281 transitions, 4232 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-08-31 01:16:52,676 INFO L231 Difference]: Finished difference. Result has 136 places, 173 transitions, 2668 flow [2023-08-31 01:16:52,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2668, PETRI_PLACES=136, PETRI_TRANSITIONS=173} [2023-08-31 01:16:52,677 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2023-08-31 01:16:52,677 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 173 transitions, 2668 flow [2023-08-31 01:16:52,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 309.14285714285717) internal successors, (2164), 7 states have internal predecessors, (2164), 0 states have call successors, (0), 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 01:16:52,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:52,678 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:52,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-31 01:16:52,678 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 01:16:52,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:52,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1257207031, now seen corresponding path program 3 times [2023-08-31 01:16:52,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:52,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160598414] [2023-08-31 01:16:52,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:52,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:52,965 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:16:52,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:52,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160598414] [2023-08-31 01:16:52,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160598414] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:52,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:52,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:16:52,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194930962] [2023-08-31 01:16:52,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:52,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:16:52,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:52,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:16:52,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:16:53,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:16:53,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 173 transitions, 2668 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:16:53,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:53,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:16:53,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:53,788 INFO L130 PetriNetUnfolder]: 2661/4150 cut-off events. [2023-08-31 01:16:53,788 INFO L131 PetriNetUnfolder]: For 45163/45163 co-relation queries the response was YES. [2023-08-31 01:16:53,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24473 conditions, 4150 events. 2661/4150 cut-off events. For 45163/45163 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 22466 event pairs, 480 based on Foata normal form. 10/4060 useless extension candidates. Maximal degree in co-relation 24403. Up to 1724 conditions per place. [2023-08-31 01:16:53,810 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 251 selfloop transitions, 42 changer transitions 0/293 dead transitions. [2023-08-31 01:16:53,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 293 transitions, 4464 flow [2023-08-31 01:16:53,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:16:53,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:16:53,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2268 transitions. [2023-08-31 01:16:53,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42023346303501946 [2023-08-31 01:16:53,813 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2268 transitions. [2023-08-31 01:16:53,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2268 transitions. [2023-08-31 01:16:53,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:53,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2268 transitions. [2023-08-31 01:16:53,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.0) internal successors, (2268), 7 states have internal predecessors, (2268), 0 states have call successors, (0), 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 01:16:53,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:53,819 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:53,819 INFO L175 Difference]: Start difference. First operand has 136 places, 173 transitions, 2668 flow. Second operand 7 states and 2268 transitions. [2023-08-31 01:16:53,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 293 transitions, 4464 flow [2023-08-31 01:16:53,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 293 transitions, 4372 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-08-31 01:16:53,893 INFO L231 Difference]: Finished difference. Result has 139 places, 174 transitions, 2689 flow [2023-08-31 01:16:53,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2582, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2689, PETRI_PLACES=139, PETRI_TRANSITIONS=174} [2023-08-31 01:16:53,894 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2023-08-31 01:16:53,894 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 174 transitions, 2689 flow [2023-08-31 01:16:53,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:16:53,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:53,894 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:53,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-31 01:16:53,895 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 01:16:53,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:53,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1947204471, now seen corresponding path program 4 times [2023-08-31 01:16:53,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:53,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148429507] [2023-08-31 01:16:53,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:53,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:54,128 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:16:54,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:54,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148429507] [2023-08-31 01:16:54,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148429507] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:54,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:54,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:16:54,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933171996] [2023-08-31 01:16:54,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:54,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:16:54,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:54,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:16:54,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:16:54,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:16:54,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 174 transitions, 2689 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:16:54,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:54,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:16:54,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:54,990 INFO L130 PetriNetUnfolder]: 2661/4149 cut-off events. [2023-08-31 01:16:54,990 INFO L131 PetriNetUnfolder]: For 45314/45314 co-relation queries the response was YES. [2023-08-31 01:16:55,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24426 conditions, 4149 events. 2661/4149 cut-off events. For 45314/45314 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 22461 event pairs, 476 based on Foata normal form. 10/4063 useless extension candidates. Maximal degree in co-relation 24355. Up to 1724 conditions per place. [2023-08-31 01:16:55,016 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 249 selfloop transitions, 39 changer transitions 0/288 dead transitions. [2023-08-31 01:16:55,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 288 transitions, 4422 flow [2023-08-31 01:16:55,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:16:55,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:16:55,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2265 transitions. [2023-08-31 01:16:55,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4196775986659255 [2023-08-31 01:16:55,018 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2265 transitions. [2023-08-31 01:16:55,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2265 transitions. [2023-08-31 01:16:55,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:55,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2265 transitions. [2023-08-31 01:16:55,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.57142857142856) internal successors, (2265), 7 states have internal predecessors, (2265), 0 states have call successors, (0), 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 01:16:55,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:55,067 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:55,067 INFO L175 Difference]: Start difference. First operand has 139 places, 174 transitions, 2689 flow. Second operand 7 states and 2265 transitions. [2023-08-31 01:16:55,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 288 transitions, 4422 flow [2023-08-31 01:16:55,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 288 transitions, 4337 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-31 01:16:55,148 INFO L231 Difference]: Finished difference. Result has 142 places, 173 transitions, 2687 flow [2023-08-31 01:16:55,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2571, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2687, PETRI_PLACES=142, PETRI_TRANSITIONS=173} [2023-08-31 01:16:55,149 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2023-08-31 01:16:55,149 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 173 transitions, 2687 flow [2023-08-31 01:16:55,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:16:55,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:55,150 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:55,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-31 01:16:55,150 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 01:16:55,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:55,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1948393763, now seen corresponding path program 5 times [2023-08-31 01:16:55,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:55,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566539184] [2023-08-31 01:16:55,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:55,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:55,457 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:16:55,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:55,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566539184] [2023-08-31 01:16:55,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566539184] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:55,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:55,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:16:55,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584026968] [2023-08-31 01:16:55,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:55,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:16:55,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:55,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:16:55,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:16:55,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-31 01:16:55,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 173 transitions, 2687 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:16:55,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:55,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-31 01:16:55,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:56,363 INFO L130 PetriNetUnfolder]: 2828/4578 cut-off events. [2023-08-31 01:16:56,364 INFO L131 PetriNetUnfolder]: For 48786/48786 co-relation queries the response was YES. [2023-08-31 01:16:56,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26522 conditions, 4578 events. 2828/4578 cut-off events. For 48786/48786 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 26803 event pairs, 442 based on Foata normal form. 4/4486 useless extension candidates. Maximal degree in co-relation 26450. Up to 1336 conditions per place. [2023-08-31 01:16:56,388 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 240 selfloop transitions, 59 changer transitions 1/300 dead transitions. [2023-08-31 01:16:56,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 300 transitions, 4672 flow [2023-08-31 01:16:56,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:16:56,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:16:56,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2234 transitions. [2023-08-31 01:16:56,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41393366685195476 [2023-08-31 01:16:56,390 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2234 transitions. [2023-08-31 01:16:56,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2234 transitions. [2023-08-31 01:16:56,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:56,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2234 transitions. [2023-08-31 01:16:56,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 319.14285714285717) internal successors, (2234), 7 states have internal predecessors, (2234), 0 states have call successors, (0), 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 01:16:56,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:56,395 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:56,395 INFO L175 Difference]: Start difference. First operand has 142 places, 173 transitions, 2687 flow. Second operand 7 states and 2234 transitions. [2023-08-31 01:16:56,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 300 transitions, 4672 flow [2023-08-31 01:16:56,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 300 transitions, 4523 flow, removed 42 selfloop flow, removed 4 redundant places. [2023-08-31 01:16:56,495 INFO L231 Difference]: Finished difference. Result has 147 places, 187 transitions, 3009 flow [2023-08-31 01:16:56,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2550, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3009, PETRI_PLACES=147, PETRI_TRANSITIONS=187} [2023-08-31 01:16:56,496 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2023-08-31 01:16:56,496 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 187 transitions, 3009 flow [2023-08-31 01:16:56,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:16:56,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:56,496 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:56,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-31 01:16:56,497 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 01:16:56,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:56,497 INFO L85 PathProgramCache]: Analyzing trace with hash 858781202, now seen corresponding path program 5 times [2023-08-31 01:16:56,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:56,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136628121] [2023-08-31 01:16:56,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:56,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:56,711 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:16:56,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:56,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136628121] [2023-08-31 01:16:56,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136628121] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:56,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:56,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:16:56,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672818035] [2023-08-31 01:16:56,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:56,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:16:56,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:56,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:16:56,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:16:56,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-31 01:16:56,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 187 transitions, 3009 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:16:56,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:56,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-31 01:16:56,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:57,670 INFO L130 PetriNetUnfolder]: 2809/4541 cut-off events. [2023-08-31 01:16:57,673 INFO L131 PetriNetUnfolder]: For 55597/55597 co-relation queries the response was YES. [2023-08-31 01:16:57,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26850 conditions, 4541 events. 2809/4541 cut-off events. For 55597/55597 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 26350 event pairs, 604 based on Foata normal form. 6/4455 useless extension candidates. Maximal degree in co-relation 26775. Up to 2441 conditions per place. [2023-08-31 01:16:57,704 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 240 selfloop transitions, 40 changer transitions 6/286 dead transitions. [2023-08-31 01:16:57,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 286 transitions, 4578 flow [2023-08-31 01:16:57,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:16:57,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:16:57,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2244 transitions. [2023-08-31 01:16:57,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41578654808226795 [2023-08-31 01:16:57,706 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2244 transitions. [2023-08-31 01:16:57,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2244 transitions. [2023-08-31 01:16:57,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:57,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2244 transitions. [2023-08-31 01:16:57,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.57142857142856) internal successors, (2244), 7 states have internal predecessors, (2244), 0 states have call successors, (0), 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 01:16:57,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:57,714 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:57,714 INFO L175 Difference]: Start difference. First operand has 147 places, 187 transitions, 3009 flow. Second operand 7 states and 2244 transitions. [2023-08-31 01:16:57,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 286 transitions, 4578 flow [2023-08-31 01:16:57,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 286 transitions, 4443 flow, removed 38 selfloop flow, removed 5 redundant places. [2023-08-31 01:16:57,856 INFO L231 Difference]: Finished difference. Result has 147 places, 185 transitions, 2934 flow [2023-08-31 01:16:57,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2868, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2934, PETRI_PLACES=147, PETRI_TRANSITIONS=185} [2023-08-31 01:16:57,857 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2023-08-31 01:16:57,857 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 185 transitions, 2934 flow [2023-08-31 01:16:57,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:16:57,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:57,858 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:57,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-31 01:16:57,858 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 01:16:57,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:57,859 INFO L85 PathProgramCache]: Analyzing trace with hash 454415150, now seen corresponding path program 6 times [2023-08-31 01:16:57,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:57,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780650170] [2023-08-31 01:16:57,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:57,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:58,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:16:58,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:58,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780650170] [2023-08-31 01:16:58,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780650170] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:58,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:58,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:16:58,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577180675] [2023-08-31 01:16:58,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:58,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:16:58,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:58,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:16:58,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:16:58,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:16:58,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 185 transitions, 2934 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:16:58,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:58,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:16:58,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:59,346 INFO L130 PetriNetUnfolder]: 3872/6304 cut-off events. [2023-08-31 01:16:59,346 INFO L131 PetriNetUnfolder]: For 65432/65432 co-relation queries the response was YES. [2023-08-31 01:16:59,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35964 conditions, 6304 events. 3872/6304 cut-off events. For 65432/65432 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 39152 event pairs, 431 based on Foata normal form. 16/6228 useless extension candidates. Maximal degree in co-relation 35890. Up to 3505 conditions per place. [2023-08-31 01:16:59,380 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 297 selfloop transitions, 52 changer transitions 2/351 dead transitions. [2023-08-31 01:16:59,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 351 transitions, 5855 flow [2023-08-31 01:16:59,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:16:59,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:16:59,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2254 transitions. [2023-08-31 01:16:59,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176394293125811 [2023-08-31 01:16:59,383 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2254 transitions. [2023-08-31 01:16:59,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2254 transitions. [2023-08-31 01:16:59,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:59,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2254 transitions. [2023-08-31 01:16:59,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 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 01:16:59,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:59,388 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:16:59,389 INFO L175 Difference]: Start difference. First operand has 147 places, 185 transitions, 2934 flow. Second operand 7 states and 2254 transitions. [2023-08-31 01:16:59,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 351 transitions, 5855 flow [2023-08-31 01:16:59,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 351 transitions, 5697 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-31 01:16:59,589 INFO L231 Difference]: Finished difference. Result has 152 places, 214 transitions, 3601 flow [2023-08-31 01:16:59,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2850, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3601, PETRI_PLACES=152, PETRI_TRANSITIONS=214} [2023-08-31 01:16:59,590 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2023-08-31 01:16:59,590 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 214 transitions, 3601 flow [2023-08-31 01:16:59,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:16:59,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:59,590 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:59,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-31 01:16:59,590 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 01:16:59,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:59,591 INFO L85 PathProgramCache]: Analyzing trace with hash 898739619, now seen corresponding path program 6 times [2023-08-31 01:16:59,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:59,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763220517] [2023-08-31 01:16:59,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:59,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:59,845 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:16:59,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:59,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763220517] [2023-08-31 01:16:59,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763220517] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:59,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:59,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:16:59,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770910729] [2023-08-31 01:16:59,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:59,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:16:59,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:59,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:16:59,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:17:00,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 771 [2023-08-31 01:17:00,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 214 transitions, 3601 flow. Second operand has 7 states, 7 states have (on average 308.14285714285717) internal successors, (2157), 7 states have internal predecessors, (2157), 0 states have call successors, (0), 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 01:17:00,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:00,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 771 [2023-08-31 01:17:00,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:01,263 INFO L130 PetriNetUnfolder]: 4122/6774 cut-off events. [2023-08-31 01:17:01,263 INFO L131 PetriNetUnfolder]: For 82006/82006 co-relation queries the response was YES. [2023-08-31 01:17:01,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40124 conditions, 6774 events. 4122/6774 cut-off events. For 82006/82006 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 43419 event pairs, 730 based on Foata normal form. 10/6692 useless extension candidates. Maximal degree in co-relation 40045. Up to 3909 conditions per place. [2023-08-31 01:17:01,298 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 268 selfloop transitions, 83 changer transitions 0/351 dead transitions. [2023-08-31 01:17:01,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 351 transitions, 5986 flow [2023-08-31 01:17:01,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:17:01,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:17:01,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2223 transitions. [2023-08-31 01:17:01,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4118954974986103 [2023-08-31 01:17:01,301 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2223 transitions. [2023-08-31 01:17:01,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2223 transitions. [2023-08-31 01:17:01,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:01,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2223 transitions. [2023-08-31 01:17:01,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 317.57142857142856) internal successors, (2223), 7 states have internal predecessors, (2223), 0 states have call successors, (0), 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 01:17:01,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:01,306 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:01,306 INFO L175 Difference]: Start difference. First operand has 152 places, 214 transitions, 3601 flow. Second operand 7 states and 2223 transitions. [2023-08-31 01:17:01,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 351 transitions, 5986 flow [2023-08-31 01:17:01,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 351 transitions, 5934 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-08-31 01:17:01,557 INFO L231 Difference]: Finished difference. Result has 161 places, 242 transitions, 4411 flow [2023-08-31 01:17:01,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=3557, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4411, PETRI_PLACES=161, PETRI_TRANSITIONS=242} [2023-08-31 01:17:01,558 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2023-08-31 01:17:01,558 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 242 transitions, 4411 flow [2023-08-31 01:17:01,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 308.14285714285717) internal successors, (2157), 7 states have internal predecessors, (2157), 0 states have call successors, (0), 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 01:17:01,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:01,558 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:01,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-31 01:17:01,558 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 01:17:01,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:01,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1280703030, now seen corresponding path program 7 times [2023-08-31 01:17:01,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:01,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692028571] [2023-08-31 01:17:01,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:01,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:01,806 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:01,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:01,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692028571] [2023-08-31 01:17:01,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692028571] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:01,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:01,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:17:01,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639164573] [2023-08-31 01:17:01,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:01,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:17:01,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:01,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:17:01,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:17:01,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-31 01:17:01,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 242 transitions, 4411 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:17:01,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:01,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-31 01:17:01,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:03,343 INFO L130 PetriNetUnfolder]: 4524/7452 cut-off events. [2023-08-31 01:17:03,343 INFO L131 PetriNetUnfolder]: For 100360/100360 co-relation queries the response was YES. [2023-08-31 01:17:03,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45761 conditions, 7452 events. 4524/7452 cut-off events. For 100360/100360 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 48824 event pairs, 425 based on Foata normal form. 16/7372 useless extension candidates. Maximal degree in co-relation 45678. Up to 3171 conditions per place. [2023-08-31 01:17:03,396 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 348 selfloop transitions, 129 changer transitions 1/478 dead transitions. [2023-08-31 01:17:03,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 478 transitions, 8384 flow [2023-08-31 01:17:03,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:17:03,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:17:03,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2877 transitions. [2023-08-31 01:17:03,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41461305663640297 [2023-08-31 01:17:03,399 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2877 transitions. [2023-08-31 01:17:03,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2877 transitions. [2023-08-31 01:17:03,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:03,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2877 transitions. [2023-08-31 01:17:03,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 319.6666666666667) internal successors, (2877), 9 states have internal predecessors, (2877), 0 states have call successors, (0), 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 01:17:03,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 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 01:17:03,405 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 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 01:17:03,405 INFO L175 Difference]: Start difference. First operand has 161 places, 242 transitions, 4411 flow. Second operand 9 states and 2877 transitions. [2023-08-31 01:17:03,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 478 transitions, 8384 flow [2023-08-31 01:17:03,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 478 transitions, 8253 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-31 01:17:03,884 INFO L231 Difference]: Finished difference. Result has 174 places, 311 transitions, 5926 flow [2023-08-31 01:17:03,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=4331, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5926, PETRI_PLACES=174, PETRI_TRANSITIONS=311} [2023-08-31 01:17:03,884 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2023-08-31 01:17:03,884 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 311 transitions, 5926 flow [2023-08-31 01:17:03,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:17:03,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:03,885 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:03,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-31 01:17:03,885 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 01:17:03,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:03,885 INFO L85 PathProgramCache]: Analyzing trace with hash -669426035, now seen corresponding path program 7 times [2023-08-31 01:17:03,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:03,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983460020] [2023-08-31 01:17:03,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:03,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:04,109 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:04,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:04,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983460020] [2023-08-31 01:17:04,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983460020] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:04,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:04,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:17:04,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681511431] [2023-08-31 01:17:04,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:04,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:17:04,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:04,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:17:04,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:17:04,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-31 01:17:04,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 311 transitions, 5926 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:17:04,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:04,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-31 01:17:04,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:05,763 INFO L130 PetriNetUnfolder]: 4520/7448 cut-off events. [2023-08-31 01:17:05,763 INFO L131 PetriNetUnfolder]: For 114626/114626 co-relation queries the response was YES. [2023-08-31 01:17:05,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49413 conditions, 7448 events. 4520/7448 cut-off events. For 114626/114626 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 48656 event pairs, 842 based on Foata normal form. 4/7356 useless extension candidates. Maximal degree in co-relation 49324. Up to 4512 conditions per place. [2023-08-31 01:17:05,814 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 300 selfloop transitions, 100 changer transitions 5/405 dead transitions. [2023-08-31 01:17:05,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 405 transitions, 7731 flow [2023-08-31 01:17:05,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:17:05,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:17:05,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2241 transitions. [2023-08-31 01:17:05,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415230683713174 [2023-08-31 01:17:05,816 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2241 transitions. [2023-08-31 01:17:05,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2241 transitions. [2023-08-31 01:17:05,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:05,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2241 transitions. [2023-08-31 01:17:05,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.14285714285717) internal successors, (2241), 7 states have internal predecessors, (2241), 0 states have call successors, (0), 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 01:17:05,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:05,821 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:05,821 INFO L175 Difference]: Start difference. First operand has 174 places, 311 transitions, 5926 flow. Second operand 7 states and 2241 transitions. [2023-08-31 01:17:05,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 405 transitions, 7731 flow [2023-08-31 01:17:06,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 405 transitions, 7661 flow, removed 35 selfloop flow, removed 0 redundant places. [2023-08-31 01:17:06,297 INFO L231 Difference]: Finished difference. Result has 181 places, 312 transitions, 6097 flow [2023-08-31 01:17:06,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=5824, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6097, PETRI_PLACES=181, PETRI_TRANSITIONS=312} [2023-08-31 01:17:06,297 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2023-08-31 01:17:06,297 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 312 transitions, 6097 flow [2023-08-31 01:17:06,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:17:06,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:06,298 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:06,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-31 01:17:06,298 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 01:17:06,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:06,298 INFO L85 PathProgramCache]: Analyzing trace with hash 502177370, now seen corresponding path program 8 times [2023-08-31 01:17:06,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:06,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620874739] [2023-08-31 01:17:06,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:06,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:06,543 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:06,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:06,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620874739] [2023-08-31 01:17:06,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620874739] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:06,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:06,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:17:06,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413959061] [2023-08-31 01:17:06,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:06,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:17:06,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:06,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:17:06,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:17:06,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 771 [2023-08-31 01:17:06,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 312 transitions, 6097 flow. Second operand has 7 states, 7 states have (on average 311.14285714285717) internal successors, (2178), 7 states have internal predecessors, (2178), 0 states have call successors, (0), 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 01:17:06,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:06,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 771 [2023-08-31 01:17:06,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:08,401 INFO L130 PetriNetUnfolder]: 4576/7658 cut-off events. [2023-08-31 01:17:08,401 INFO L131 PetriNetUnfolder]: For 121527/121527 co-relation queries the response was YES. [2023-08-31 01:17:08,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51369 conditions, 7658 events. 4576/7658 cut-off events. For 121527/121527 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 51388 event pairs, 756 based on Foata normal form. 16/7578 useless extension candidates. Maximal degree in co-relation 51278. Up to 3836 conditions per place. [2023-08-31 01:17:08,463 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 338 selfloop transitions, 86 changer transitions 1/425 dead transitions. [2023-08-31 01:17:08,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 425 transitions, 8217 flow [2023-08-31 01:17:08,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:17:08,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:17:08,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2244 transitions. [2023-08-31 01:17:08,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41578654808226795 [2023-08-31 01:17:08,470 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2244 transitions. [2023-08-31 01:17:08,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2244 transitions. [2023-08-31 01:17:08,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:08,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2244 transitions. [2023-08-31 01:17:08,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.57142857142856) internal successors, (2244), 7 states have internal predecessors, (2244), 0 states have call successors, (0), 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 01:17:08,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:08,476 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:08,476 INFO L175 Difference]: Start difference. First operand has 181 places, 312 transitions, 6097 flow. Second operand 7 states and 2244 transitions. [2023-08-31 01:17:08,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 425 transitions, 8217 flow [2023-08-31 01:17:09,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 425 transitions, 8053 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-31 01:17:09,178 INFO L231 Difference]: Finished difference. Result has 186 places, 317 transitions, 6275 flow [2023-08-31 01:17:09,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=5933, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6275, PETRI_PLACES=186, PETRI_TRANSITIONS=317} [2023-08-31 01:17:09,178 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2023-08-31 01:17:09,178 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 317 transitions, 6275 flow [2023-08-31 01:17:09,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 311.14285714285717) internal successors, (2178), 7 states have internal predecessors, (2178), 0 states have call successors, (0), 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 01:17:09,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:09,179 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:09,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-31 01:17:09,179 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 01:17:09,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:09,179 INFO L85 PathProgramCache]: Analyzing trace with hash 703973021, now seen corresponding path program 8 times [2023-08-31 01:17:09,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:09,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426228143] [2023-08-31 01:17:09,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:09,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:09,456 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:09,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:09,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426228143] [2023-08-31 01:17:09,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426228143] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:09,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:09,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:17:09,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679426789] [2023-08-31 01:17:09,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:09,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:17:09,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:09,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:17:09,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:17:09,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 771 [2023-08-31 01:17:09,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 317 transitions, 6275 flow. Second operand has 7 states, 7 states have (on average 308.14285714285717) internal successors, (2157), 7 states have internal predecessors, (2157), 0 states have call successors, (0), 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 01:17:09,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:09,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 771 [2023-08-31 01:17:09,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:11,243 INFO L130 PetriNetUnfolder]: 4628/7834 cut-off events. [2023-08-31 01:17:11,243 INFO L131 PetriNetUnfolder]: For 127980/127980 co-relation queries the response was YES. [2023-08-31 01:17:11,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52757 conditions, 7834 events. 4628/7834 cut-off events. For 127980/127980 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 53588 event pairs, 1040 based on Foata normal form. 4/7742 useless extension candidates. Maximal degree in co-relation 52663. Up to 4710 conditions per place. [2023-08-31 01:17:11,296 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 323 selfloop transitions, 121 changer transitions 4/448 dead transitions. [2023-08-31 01:17:11,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 448 transitions, 8796 flow [2023-08-31 01:17:11,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:17:11,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:17:11,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2216 transitions. [2023-08-31 01:17:11,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41059848063739113 [2023-08-31 01:17:11,298 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2216 transitions. [2023-08-31 01:17:11,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2216 transitions. [2023-08-31 01:17:11,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:11,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2216 transitions. [2023-08-31 01:17:11,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 316.57142857142856) internal successors, (2216), 7 states have internal predecessors, (2216), 0 states have call successors, (0), 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 01:17:11,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:11,303 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:11,303 INFO L175 Difference]: Start difference. First operand has 186 places, 317 transitions, 6275 flow. Second operand 7 states and 2216 transitions. [2023-08-31 01:17:11,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 448 transitions, 8796 flow [2023-08-31 01:17:11,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 448 transitions, 8578 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-08-31 01:17:11,881 INFO L231 Difference]: Finished difference. Result has 193 places, 337 transitions, 6759 flow [2023-08-31 01:17:11,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=6091, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6759, PETRI_PLACES=193, PETRI_TRANSITIONS=337} [2023-08-31 01:17:11,882 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2023-08-31 01:17:11,882 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 337 transitions, 6759 flow [2023-08-31 01:17:11,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 308.14285714285717) internal successors, (2157), 7 states have internal predecessors, (2157), 0 states have call successors, (0), 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 01:17:11,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:11,883 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:11,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-31 01:17:11,883 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 01:17:11,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:11,883 INFO L85 PathProgramCache]: Analyzing trace with hash -171246378, now seen corresponding path program 9 times [2023-08-31 01:17:11,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:11,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556511783] [2023-08-31 01:17:11,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:11,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:12,108 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:12,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:12,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556511783] [2023-08-31 01:17:12,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556511783] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:12,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:12,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:17:12,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389598037] [2023-08-31 01:17:12,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:12,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:17:12,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:12,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:17:12,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:17:12,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:17:12,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 337 transitions, 6759 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:17:12,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:12,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:17:12,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:13,935 INFO L130 PetriNetUnfolder]: 4941/8391 cut-off events. [2023-08-31 01:17:13,935 INFO L131 PetriNetUnfolder]: For 140156/140156 co-relation queries the response was YES. [2023-08-31 01:17:13,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56837 conditions, 8391 events. 4941/8391 cut-off events. For 140156/140156 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 58371 event pairs, 982 based on Foata normal form. 8/8303 useless extension candidates. Maximal degree in co-relation 56739. Up to 2647 conditions per place. [2023-08-31 01:17:13,998 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 370 selfloop transitions, 115 changer transitions 0/485 dead transitions. [2023-08-31 01:17:13,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 485 transitions, 9743 flow [2023-08-31 01:17:13,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:17:13,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:17:14,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2267 transitions. [2023-08-31 01:17:14,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42004817491198815 [2023-08-31 01:17:14,001 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2267 transitions. [2023-08-31 01:17:14,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2267 transitions. [2023-08-31 01:17:14,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:14,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2267 transitions. [2023-08-31 01:17:14,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.85714285714283) internal successors, (2267), 7 states have internal predecessors, (2267), 0 states have call successors, (0), 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 01:17:14,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:14,006 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:14,006 INFO L175 Difference]: Start difference. First operand has 193 places, 337 transitions, 6759 flow. Second operand 7 states and 2267 transitions. [2023-08-31 01:17:14,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 485 transitions, 9743 flow [2023-08-31 01:17:14,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 485 transitions, 9661 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-08-31 01:17:14,746 INFO L231 Difference]: Finished difference. Result has 199 places, 350 transitions, 7310 flow [2023-08-31 01:17:14,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=6677, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7310, PETRI_PLACES=199, PETRI_TRANSITIONS=350} [2023-08-31 01:17:14,747 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2023-08-31 01:17:14,747 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 350 transitions, 7310 flow [2023-08-31 01:17:14,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:17:14,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:14,747 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:14,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-31 01:17:14,748 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 01:17:14,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:14,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1404101974, now seen corresponding path program 10 times [2023-08-31 01:17:14,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:14,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954299113] [2023-08-31 01:17:14,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:14,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:14,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:14,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954299113] [2023-08-31 01:17:14,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954299113] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:14,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:14,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:17:14,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042463210] [2023-08-31 01:17:14,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:14,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:17:14,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:14,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:17:14,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:17:15,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-31 01:17:15,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 350 transitions, 7310 flow. Second operand has 8 states, 8 states have (on average 311.75) internal successors, (2494), 8 states have internal predecessors, (2494), 0 states have call successors, (0), 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 01:17:15,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:15,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-31 01:17:15,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:16,774 INFO L130 PetriNetUnfolder]: 4910/8324 cut-off events. [2023-08-31 01:17:16,774 INFO L131 PetriNetUnfolder]: For 150792/150792 co-relation queries the response was YES. [2023-08-31 01:17:16,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57296 conditions, 8324 events. 4910/8324 cut-off events. For 150792/150792 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 57633 event pairs, 968 based on Foata normal form. 12/8240 useless extension candidates. Maximal degree in co-relation 57196. Up to 4569 conditions per place. [2023-08-31 01:17:16,842 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 338 selfloop transitions, 122 changer transitions 0/460 dead transitions. [2023-08-31 01:17:16,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 460 transitions, 9542 flow [2023-08-31 01:17:16,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:17:16,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:17:16,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2248 transitions. [2023-08-31 01:17:16,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4165277005743932 [2023-08-31 01:17:16,844 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2248 transitions. [2023-08-31 01:17:16,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2248 transitions. [2023-08-31 01:17:16,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:16,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2248 transitions. [2023-08-31 01:17:16,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.14285714285717) internal successors, (2248), 7 states have internal predecessors, (2248), 0 states have call successors, (0), 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 01:17:16,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:16,849 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:16,849 INFO L175 Difference]: Start difference. First operand has 199 places, 350 transitions, 7310 flow. Second operand 7 states and 2248 transitions. [2023-08-31 01:17:16,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 460 transitions, 9542 flow [2023-08-31 01:17:17,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 460 transitions, 9240 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-08-31 01:17:17,668 INFO L231 Difference]: Finished difference. Result has 202 places, 350 transitions, 7275 flow [2023-08-31 01:17:17,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7022, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7275, PETRI_PLACES=202, PETRI_TRANSITIONS=350} [2023-08-31 01:17:17,668 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2023-08-31 01:17:17,668 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 350 transitions, 7275 flow [2023-08-31 01:17:17,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 311.75) internal successors, (2494), 8 states have internal predecessors, (2494), 0 states have call successors, (0), 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 01:17:17,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:17,669 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:17,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-31 01:17:17,669 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 01:17:17,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:17,670 INFO L85 PathProgramCache]: Analyzing trace with hash 239437526, now seen corresponding path program 11 times [2023-08-31 01:17:17,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:17,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760274244] [2023-08-31 01:17:17,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:17,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:17,879 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:17,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:17,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760274244] [2023-08-31 01:17:17,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760274244] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:17,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:17,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:17:17,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412611290] [2023-08-31 01:17:17,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:17,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:17:17,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:17,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:17:17,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:17:18,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-31 01:17:18,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 350 transitions, 7275 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:17:18,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:18,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-31 01:17:18,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:19,796 INFO L130 PetriNetUnfolder]: 4894/8294 cut-off events. [2023-08-31 01:17:19,796 INFO L131 PetriNetUnfolder]: For 146763/146763 co-relation queries the response was YES. [2023-08-31 01:17:19,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57092 conditions, 8294 events. 4894/8294 cut-off events. For 146763/146763 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 57422 event pairs, 968 based on Foata normal form. 6/8204 useless extension candidates. Maximal degree in co-relation 56991. Up to 4569 conditions per place. [2023-08-31 01:17:19,866 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 346 selfloop transitions, 103 changer transitions 6/455 dead transitions. [2023-08-31 01:17:19,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 455 transitions, 9438 flow [2023-08-31 01:17:19,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:17:19,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:17:19,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2242 transitions. [2023-08-31 01:17:19,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4154159718362053 [2023-08-31 01:17:19,868 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2242 transitions. [2023-08-31 01:17:19,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2242 transitions. [2023-08-31 01:17:19,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:19,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2242 transitions. [2023-08-31 01:17:19,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.2857142857143) internal successors, (2242), 7 states have internal predecessors, (2242), 0 states have call successors, (0), 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 01:17:19,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:19,874 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:19,874 INFO L175 Difference]: Start difference. First operand has 202 places, 350 transitions, 7275 flow. Second operand 7 states and 2242 transitions. [2023-08-31 01:17:19,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 455 transitions, 9438 flow [2023-08-31 01:17:20,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 455 transitions, 9312 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 01:17:20,612 INFO L231 Difference]: Finished difference. Result has 206 places, 349 transitions, 7347 flow [2023-08-31 01:17:20,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7127, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7347, PETRI_PLACES=206, PETRI_TRANSITIONS=349} [2023-08-31 01:17:20,613 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2023-08-31 01:17:20,613 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 349 transitions, 7347 flow [2023-08-31 01:17:20,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:17:20,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:20,613 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:20,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-31 01:17:20,614 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:17:20,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:20,614 INFO L85 PathProgramCache]: Analyzing trace with hash -42669151, now seen corresponding path program 9 times [2023-08-31 01:17:20,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:20,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189672023] [2023-08-31 01:17:20,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:20,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:20,879 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:20,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:20,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189672023] [2023-08-31 01:17:20,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189672023] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:20,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:20,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:17:20,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633469243] [2023-08-31 01:17:20,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:20,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:17:20,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:20,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:17:20,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:17:21,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 771 [2023-08-31 01:17:21,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 349 transitions, 7347 flow. Second operand has 7 states, 7 states have (on average 306.14285714285717) internal successors, (2143), 7 states have internal predecessors, (2143), 0 states have call successors, (0), 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 01:17:21,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:21,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 771 [2023-08-31 01:17:21,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:22,809 INFO L130 PetriNetUnfolder]: 4881/8263 cut-off events. [2023-08-31 01:17:22,809 INFO L131 PetriNetUnfolder]: For 150786/150786 co-relation queries the response was YES. [2023-08-31 01:17:22,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57088 conditions, 8263 events. 4881/8263 cut-off events. For 150786/150786 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 56989 event pairs, 1152 based on Foata normal form. 4/8171 useless extension candidates. Maximal degree in co-relation 56986. Up to 5372 conditions per place. [2023-08-31 01:17:22,868 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 322 selfloop transitions, 115 changer transitions 4/441 dead transitions. [2023-08-31 01:17:22,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 441 transitions, 9271 flow [2023-08-31 01:17:22,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:17:22,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:17:22,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2200 transitions. [2023-08-31 01:17:22,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4076338706688901 [2023-08-31 01:17:22,870 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2200 transitions. [2023-08-31 01:17:22,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2200 transitions. [2023-08-31 01:17:22,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:22,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2200 transitions. [2023-08-31 01:17:22,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 314.2857142857143) internal successors, (2200), 7 states have internal predecessors, (2200), 0 states have call successors, (0), 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 01:17:22,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:22,875 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:22,875 INFO L175 Difference]: Start difference. First operand has 206 places, 349 transitions, 7347 flow. Second operand 7 states and 2200 transitions. [2023-08-31 01:17:22,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 441 transitions, 9271 flow [2023-08-31 01:17:23,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 441 transitions, 9053 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-08-31 01:17:23,518 INFO L231 Difference]: Finished difference. Result has 206 places, 347 transitions, 7309 flow [2023-08-31 01:17:23,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7102, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7309, PETRI_PLACES=206, PETRI_TRANSITIONS=347} [2023-08-31 01:17:23,518 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2023-08-31 01:17:23,519 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 347 transitions, 7309 flow [2023-08-31 01:17:23,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 306.14285714285717) internal successors, (2143), 7 states have internal predecessors, (2143), 0 states have call successors, (0), 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 01:17:23,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:23,519 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:23,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-31 01:17:23,519 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:17:23,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:23,519 INFO L85 PathProgramCache]: Analyzing trace with hash 416811670, now seen corresponding path program 12 times [2023-08-31 01:17:23,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:23,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910451470] [2023-08-31 01:17:23,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:23,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:23,729 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:23,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:23,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910451470] [2023-08-31 01:17:23,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910451470] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:23,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:23,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:17:23,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086312860] [2023-08-31 01:17:23,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:23,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:17:23,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:23,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:17:23,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:17:23,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:17:23,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 347 transitions, 7309 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:17:23,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:23,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:17:23,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:25,491 INFO L130 PetriNetUnfolder]: 4862/8226 cut-off events. [2023-08-31 01:17:25,491 INFO L131 PetriNetUnfolder]: For 155431/155431 co-relation queries the response was YES. [2023-08-31 01:17:25,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56919 conditions, 8226 events. 4862/8226 cut-off events. For 155431/155431 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 56586 event pairs, 1190 based on Foata normal form. 6/8136 useless extension candidates. Maximal degree in co-relation 56817. Up to 5371 conditions per place. [2023-08-31 01:17:25,551 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 302 selfloop transitions, 156 changer transitions 9/467 dead transitions. [2023-08-31 01:17:25,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 467 transitions, 9773 flow [2023-08-31 01:17:25,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:17:25,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:17:25,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2264 transitions. [2023-08-31 01:17:25,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4194923105428942 [2023-08-31 01:17:25,554 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2264 transitions. [2023-08-31 01:17:25,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2264 transitions. [2023-08-31 01:17:25,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:25,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2264 transitions. [2023-08-31 01:17:25,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.42857142857144) internal successors, (2264), 7 states have internal predecessors, (2264), 0 states have call successors, (0), 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 01:17:25,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:25,558 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:25,558 INFO L175 Difference]: Start difference. First operand has 206 places, 347 transitions, 7309 flow. Second operand 7 states and 2264 transitions. [2023-08-31 01:17:25,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 467 transitions, 9773 flow [2023-08-31 01:17:26,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 467 transitions, 9524 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 01:17:26,180 INFO L231 Difference]: Finished difference. Result has 212 places, 378 transitions, 8062 flow [2023-08-31 01:17:26,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7116, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8062, PETRI_PLACES=212, PETRI_TRANSITIONS=378} [2023-08-31 01:17:26,181 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2023-08-31 01:17:26,181 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 378 transitions, 8062 flow [2023-08-31 01:17:26,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:17:26,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:26,181 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:26,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-31 01:17:26,182 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:17:26,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:26,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1323801734, now seen corresponding path program 13 times [2023-08-31 01:17:26,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:26,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413970878] [2023-08-31 01:17:26,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:26,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:26,427 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:26,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:26,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413970878] [2023-08-31 01:17:26,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413970878] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:26,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:26,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:17:26,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994043672] [2023-08-31 01:17:26,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:26,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:17:26,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:26,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:17:26,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:17:26,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 771 [2023-08-31 01:17:26,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 378 transitions, 8062 flow. Second operand has 7 states, 7 states have (on average 313.14285714285717) internal successors, (2192), 7 states have internal predecessors, (2192), 0 states have call successors, (0), 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 01:17:26,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:26,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 771 [2023-08-31 01:17:26,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:28,313 INFO L130 PetriNetUnfolder]: 4992/8454 cut-off events. [2023-08-31 01:17:28,313 INFO L131 PetriNetUnfolder]: For 161899/161899 co-relation queries the response was YES. [2023-08-31 01:17:28,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59136 conditions, 8454 events. 4992/8454 cut-off events. For 161899/161899 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 58535 event pairs, 1252 based on Foata normal form. 4/8362 useless extension candidates. Maximal degree in co-relation 59030. Up to 5391 conditions per place. [2023-08-31 01:17:28,375 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 312 selfloop transitions, 168 changer transitions 0/480 dead transitions. [2023-08-31 01:17:28,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 480 transitions, 10297 flow [2023-08-31 01:17:28,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:17:28,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:17:28,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2264 transitions. [2023-08-31 01:17:28,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4194923105428942 [2023-08-31 01:17:28,377 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2264 transitions. [2023-08-31 01:17:28,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2264 transitions. [2023-08-31 01:17:28,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:28,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2264 transitions. [2023-08-31 01:17:28,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.42857142857144) internal successors, (2264), 7 states have internal predecessors, (2264), 0 states have call successors, (0), 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 01:17:28,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:28,382 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:28,382 INFO L175 Difference]: Start difference. First operand has 212 places, 378 transitions, 8062 flow. Second operand 7 states and 2264 transitions. [2023-08-31 01:17:28,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 480 transitions, 10297 flow [2023-08-31 01:17:29,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 480 transitions, 10124 flow, removed 25 selfloop flow, removed 5 redundant places. [2023-08-31 01:17:29,125 INFO L231 Difference]: Finished difference. Result has 216 places, 401 transitions, 8888 flow [2023-08-31 01:17:29,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7915, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8888, PETRI_PLACES=216, PETRI_TRANSITIONS=401} [2023-08-31 01:17:29,126 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2023-08-31 01:17:29,126 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 401 transitions, 8888 flow [2023-08-31 01:17:29,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 313.14285714285717) internal successors, (2192), 7 states have internal predecessors, (2192), 0 states have call successors, (0), 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 01:17:29,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:29,126 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:29,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-31 01:17:29,127 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:17:29,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:29,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1390050419, now seen corresponding path program 10 times [2023-08-31 01:17:29,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:29,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523349478] [2023-08-31 01:17:29,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:29,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:29,336 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:29,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:29,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523349478] [2023-08-31 01:17:29,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523349478] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:29,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:29,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:17:29,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484932251] [2023-08-31 01:17:29,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:29,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:17:29,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:29,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:17:29,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:17:29,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:17:29,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 401 transitions, 8888 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:17:29,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:29,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:17:29,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:31,504 INFO L130 PetriNetUnfolder]: 5266/8922 cut-off events. [2023-08-31 01:17:31,504 INFO L131 PetriNetUnfolder]: For 174951/174951 co-relation queries the response was YES. [2023-08-31 01:17:31,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62264 conditions, 8922 events. 5266/8922 cut-off events. For 174951/174951 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 62359 event pairs, 1192 based on Foata normal form. 32/8858 useless extension candidates. Maximal degree in co-relation 62158. Up to 3078 conditions per place. [2023-08-31 01:17:31,571 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 357 selfloop transitions, 170 changer transitions 0/527 dead transitions. [2023-08-31 01:17:31,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 527 transitions, 11557 flow [2023-08-31 01:17:31,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:17:31,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:17:31,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2275 transitions. [2023-08-31 01:17:31,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42153047989623865 [2023-08-31 01:17:31,573 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2275 transitions. [2023-08-31 01:17:31,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2275 transitions. [2023-08-31 01:17:31,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:31,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2275 transitions. [2023-08-31 01:17:31,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 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 01:17:31,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:31,577 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:31,577 INFO L175 Difference]: Start difference. First operand has 216 places, 401 transitions, 8888 flow. Second operand 7 states and 2275 transitions. [2023-08-31 01:17:31,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 527 transitions, 11557 flow [2023-08-31 01:17:32,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 527 transitions, 11304 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-08-31 01:17:32,386 INFO L231 Difference]: Finished difference. Result has 222 places, 417 transitions, 9581 flow [2023-08-31 01:17:32,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=8635, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9581, PETRI_PLACES=222, PETRI_TRANSITIONS=417} [2023-08-31 01:17:32,387 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2023-08-31 01:17:32,387 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 417 transitions, 9581 flow [2023-08-31 01:17:32,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:17:32,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:32,387 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:32,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-31 01:17:32,388 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:17:32,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:32,388 INFO L85 PathProgramCache]: Analyzing trace with hash -946825859, now seen corresponding path program 11 times [2023-08-31 01:17:32,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:32,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150635342] [2023-08-31 01:17:32,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:32,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:32,611 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:32,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:32,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150635342] [2023-08-31 01:17:32,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150635342] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:32,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:32,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:17:32,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836435611] [2023-08-31 01:17:32,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:32,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:17:32,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:32,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:17:32,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:17:32,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-31 01:17:32,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 417 transitions, 9581 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:17:32,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:32,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-31 01:17:32,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:34,798 INFO L130 PetriNetUnfolder]: 5624/9630 cut-off events. [2023-08-31 01:17:34,798 INFO L131 PetriNetUnfolder]: For 198065/198065 co-relation queries the response was YES. [2023-08-31 01:17:34,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67506 conditions, 9630 events. 5624/9630 cut-off events. For 198065/198065 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 69377 event pairs, 1112 based on Foata normal form. 8/9542 useless extension candidates. Maximal degree in co-relation 67398. Up to 3378 conditions per place. [2023-08-31 01:17:34,873 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 368 selfloop transitions, 222 changer transitions 0/590 dead transitions. [2023-08-31 01:17:34,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 590 transitions, 13343 flow [2023-08-31 01:17:34,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:17:34,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:17:34,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2246 transitions. [2023-08-31 01:17:34,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161571243283306 [2023-08-31 01:17:34,875 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2246 transitions. [2023-08-31 01:17:34,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2246 transitions. [2023-08-31 01:17:34,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:34,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2246 transitions. [2023-08-31 01:17:34,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.85714285714283) internal successors, (2246), 7 states have internal predecessors, (2246), 0 states have call successors, (0), 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 01:17:34,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:34,880 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:34,880 INFO L175 Difference]: Start difference. First operand has 222 places, 417 transitions, 9581 flow. Second operand 7 states and 2246 transitions. [2023-08-31 01:17:34,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 590 transitions, 13343 flow [2023-08-31 01:17:35,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 590 transitions, 12937 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-08-31 01:17:35,857 INFO L231 Difference]: Finished difference. Result has 229 places, 456 transitions, 10573 flow [2023-08-31 01:17:35,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=9223, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10573, PETRI_PLACES=229, PETRI_TRANSITIONS=456} [2023-08-31 01:17:35,857 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2023-08-31 01:17:35,857 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 456 transitions, 10573 flow [2023-08-31 01:17:35,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:17:35,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:35,858 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:35,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-31 01:17:35,858 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:17:35,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:35,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1445794718, now seen corresponding path program 14 times [2023-08-31 01:17:35,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:35,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582144518] [2023-08-31 01:17:35,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:35,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:36,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:36,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:36,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582144518] [2023-08-31 01:17:36,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582144518] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:36,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:36,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:17:36,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98407815] [2023-08-31 01:17:36,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:36,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:17:36,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:36,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:17:36,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:17:36,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:17:36,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 456 transitions, 10573 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:17:36,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:36,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:17:36,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:38,517 INFO L130 PetriNetUnfolder]: 5618/9624 cut-off events. [2023-08-31 01:17:38,517 INFO L131 PetriNetUnfolder]: For 210069/210069 co-relation queries the response was YES. [2023-08-31 01:17:38,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69222 conditions, 9624 events. 5618/9624 cut-off events. For 210069/210069 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 69241 event pairs, 1416 based on Foata normal form. 6/9536 useless extension candidates. Maximal degree in co-relation 69110. Up to 6511 conditions per place. [2023-08-31 01:17:38,595 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 333 selfloop transitions, 193 changer transitions 8/534 dead transitions. [2023-08-31 01:17:38,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 534 transitions, 12280 flow [2023-08-31 01:17:38,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:17:38,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:17:38,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2268 transitions. [2023-08-31 01:17:38,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42023346303501946 [2023-08-31 01:17:38,597 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2268 transitions. [2023-08-31 01:17:38,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2268 transitions. [2023-08-31 01:17:38,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:38,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2268 transitions. [2023-08-31 01:17:38,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.0) internal successors, (2268), 7 states have internal predecessors, (2268), 0 states have call successors, (0), 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 01:17:38,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:38,601 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:38,601 INFO L175 Difference]: Start difference. First operand has 229 places, 456 transitions, 10573 flow. Second operand 7 states and 2268 transitions. [2023-08-31 01:17:38,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 534 transitions, 12280 flow [2023-08-31 01:17:39,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 534 transitions, 12155 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-08-31 01:17:39,693 INFO L231 Difference]: Finished difference. Result has 234 places, 454 transitions, 10750 flow [2023-08-31 01:17:39,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10410, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10750, PETRI_PLACES=234, PETRI_TRANSITIONS=454} [2023-08-31 01:17:39,693 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2023-08-31 01:17:39,694 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 454 transitions, 10750 flow [2023-08-31 01:17:39,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:17:39,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:39,694 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:39,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-31 01:17:39,694 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:17:39,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:39,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1382716463, now seen corresponding path program 12 times [2023-08-31 01:17:39,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:39,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636907555] [2023-08-31 01:17:39,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:39,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:39,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:39,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:39,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636907555] [2023-08-31 01:17:39,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636907555] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:39,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:39,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:17:39,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891634523] [2023-08-31 01:17:39,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:39,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:17:39,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:39,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:17:39,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:17:40,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:17:40,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 454 transitions, 10750 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:17:40,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:40,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:17:40,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:42,242 INFO L130 PetriNetUnfolder]: 5571/9519 cut-off events. [2023-08-31 01:17:42,243 INFO L131 PetriNetUnfolder]: For 211877/211877 co-relation queries the response was YES. [2023-08-31 01:17:42,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68865 conditions, 9519 events. 5571/9519 cut-off events. For 211877/211877 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 68078 event pairs, 1298 based on Foata normal form. 26/9451 useless extension candidates. Maximal degree in co-relation 68753. Up to 3543 conditions per place. [2023-08-31 01:17:42,321 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 338 selfloop transitions, 201 changer transitions 0/539 dead transitions. [2023-08-31 01:17:42,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 539 transitions, 12673 flow [2023-08-31 01:17:42,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:17:42,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:17:42,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2272 transitions. [2023-08-31 01:17:42,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4209746155271447 [2023-08-31 01:17:42,324 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2272 transitions. [2023-08-31 01:17:42,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2272 transitions. [2023-08-31 01:17:42,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:42,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2272 transitions. [2023-08-31 01:17:42,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.57142857142856) internal successors, (2272), 7 states have internal predecessors, (2272), 0 states have call successors, (0), 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 01:17:42,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:42,328 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:42,328 INFO L175 Difference]: Start difference. First operand has 234 places, 454 transitions, 10750 flow. Second operand 7 states and 2272 transitions. [2023-08-31 01:17:42,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 539 transitions, 12673 flow [2023-08-31 01:17:43,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 539 transitions, 12299 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-08-31 01:17:43,402 INFO L231 Difference]: Finished difference. Result has 237 places, 455 transitions, 10833 flow [2023-08-31 01:17:43,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10352, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10833, PETRI_PLACES=237, PETRI_TRANSITIONS=455} [2023-08-31 01:17:43,403 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2023-08-31 01:17:43,404 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 455 transitions, 10833 flow [2023-08-31 01:17:43,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:17:43,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:43,404 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:43,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-31 01:17:43,405 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:17:43,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:43,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1675786311, now seen corresponding path program 13 times [2023-08-31 01:17:43,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:43,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983231730] [2023-08-31 01:17:43,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:43,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:43,675 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:43,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:43,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983231730] [2023-08-31 01:17:43,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983231730] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:43,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:43,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:17:43,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024474530] [2023-08-31 01:17:43,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:43,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:17:43,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:43,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:17:43,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:17:43,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:17:43,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 455 transitions, 10833 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:17:43,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:43,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:17:43,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:46,018 INFO L130 PetriNetUnfolder]: 5556/9500 cut-off events. [2023-08-31 01:17:46,019 INFO L131 PetriNetUnfolder]: For 211382/211382 co-relation queries the response was YES. [2023-08-31 01:17:46,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68811 conditions, 9500 events. 5556/9500 cut-off events. For 211382/211382 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 68017 event pairs, 1270 based on Foata normal form. 8/9414 useless extension candidates. Maximal degree in co-relation 68699. Up to 3543 conditions per place. [2023-08-31 01:17:46,098 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 399 selfloop transitions, 156 changer transitions 1/556 dead transitions. [2023-08-31 01:17:46,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 556 transitions, 13053 flow [2023-08-31 01:17:46,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:17:46,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:17:46,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2268 transitions. [2023-08-31 01:17:46,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42023346303501946 [2023-08-31 01:17:46,101 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2268 transitions. [2023-08-31 01:17:46,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2268 transitions. [2023-08-31 01:17:46,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:46,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2268 transitions. [2023-08-31 01:17:46,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.0) internal successors, (2268), 7 states have internal predecessors, (2268), 0 states have call successors, (0), 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 01:17:46,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:46,105 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:46,105 INFO L175 Difference]: Start difference. First operand has 237 places, 455 transitions, 10833 flow. Second operand 7 states and 2268 transitions. [2023-08-31 01:17:46,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 556 transitions, 13053 flow [2023-08-31 01:17:47,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 556 transitions, 12666 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-31 01:17:47,164 INFO L231 Difference]: Finished difference. Result has 241 places, 457 transitions, 10866 flow [2023-08-31 01:17:47,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10448, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10866, PETRI_PLACES=241, PETRI_TRANSITIONS=457} [2023-08-31 01:17:47,165 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2023-08-31 01:17:47,165 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 457 transitions, 10866 flow [2023-08-31 01:17:47,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:17:47,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:47,165 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:47,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-31 01:17:47,166 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:17:47,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:47,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1374750287, now seen corresponding path program 14 times [2023-08-31 01:17:47,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:47,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995065684] [2023-08-31 01:17:47,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:47,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:47,426 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:47,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:47,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995065684] [2023-08-31 01:17:47,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995065684] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:17:47,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720007288] [2023-08-31 01:17:47,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 01:17:47,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:17:47,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:17:47,429 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:17:47,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 01:17:47,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 01:17:47,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:17:47,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-31 01:17:47,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:17:47,756 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:47,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:17:47,983 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:47,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720007288] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:17:47,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:17:47,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2023-08-31 01:17:47,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760641268] [2023-08-31 01:17:47,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:47,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:17:47,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:47,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:17:47,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-08-31 01:17:48,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 771 [2023-08-31 01:17:48,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 457 transitions, 10866 flow. Second operand has 7 states, 7 states have (on average 311.14285714285717) internal successors, (2178), 7 states have internal predecessors, (2178), 0 states have call successors, (0), 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 01:17:48,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:48,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 771 [2023-08-31 01:17:48,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:50,455 INFO L130 PetriNetUnfolder]: 5574/9514 cut-off events. [2023-08-31 01:17:50,456 INFO L131 PetriNetUnfolder]: For 215303/215303 co-relation queries the response was YES. [2023-08-31 01:17:50,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68931 conditions, 9514 events. 5574/9514 cut-off events. For 215303/215303 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 67943 event pairs, 1318 based on Foata normal form. 10/9430 useless extension candidates. Maximal degree in co-relation 68817. Up to 3543 conditions per place. [2023-08-31 01:17:50,543 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 395 selfloop transitions, 164 changer transitions 0/559 dead transitions. [2023-08-31 01:17:50,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 559 transitions, 13191 flow [2023-08-31 01:17:50,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:17:50,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:17:50,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2246 transitions. [2023-08-31 01:17:50,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161571243283306 [2023-08-31 01:17:50,552 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2246 transitions. [2023-08-31 01:17:50,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2246 transitions. [2023-08-31 01:17:50,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:50,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2246 transitions. [2023-08-31 01:17:50,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.85714285714283) internal successors, (2246), 7 states have internal predecessors, (2246), 0 states have call successors, (0), 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 01:17:50,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:50,564 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:50,564 INFO L175 Difference]: Start difference. First operand has 241 places, 457 transitions, 10866 flow. Second operand 7 states and 2246 transitions. [2023-08-31 01:17:50,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 559 transitions, 13191 flow [2023-08-31 01:17:51,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 559 transitions, 12828 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-08-31 01:17:51,713 INFO L231 Difference]: Finished difference. Result has 242 places, 464 transitions, 11091 flow [2023-08-31 01:17:51,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10453, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11091, PETRI_PLACES=242, PETRI_TRANSITIONS=464} [2023-08-31 01:17:51,714 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2023-08-31 01:17:51,714 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 464 transitions, 11091 flow [2023-08-31 01:17:51,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 311.14285714285717) internal successors, (2178), 7 states have internal predecessors, (2178), 0 states have call successors, (0), 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 01:17:51,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:51,714 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:51,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-31 01:17:51,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-31 01:17:51,919 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:17:51,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:51,919 INFO L85 PathProgramCache]: Analyzing trace with hash -261624810, now seen corresponding path program 15 times [2023-08-31 01:17:51,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:51,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37462672] [2023-08-31 01:17:51,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:51,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:52,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:52,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:52,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37462672] [2023-08-31 01:17:52,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37462672] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:52,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:52,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:17:52,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91199080] [2023-08-31 01:17:52,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:52,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:17:52,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:52,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:17:52,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:17:52,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-31 01:17:52,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 464 transitions, 11091 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:17:52,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:52,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-31 01:17:52,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:54,954 INFO L130 PetriNetUnfolder]: 5892/10536 cut-off events. [2023-08-31 01:17:54,954 INFO L131 PetriNetUnfolder]: For 221819/221819 co-relation queries the response was YES. [2023-08-31 01:17:55,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73713 conditions, 10536 events. 5892/10536 cut-off events. For 221819/221819 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 81982 event pairs, 767 based on Foata normal form. 8/10440 useless extension candidates. Maximal degree in co-relation 73599. Up to 5011 conditions per place. [2023-08-31 01:17:55,054 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 320 selfloop transitions, 285 changer transitions 0/605 dead transitions. [2023-08-31 01:17:55,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 605 transitions, 13865 flow [2023-08-31 01:17:55,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:17:55,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:17:55,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3196 transitions. [2023-08-31 01:17:55,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.414526588845655 [2023-08-31 01:17:55,056 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3196 transitions. [2023-08-31 01:17:55,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3196 transitions. [2023-08-31 01:17:55,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:55,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3196 transitions. [2023-08-31 01:17:55,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 319.6) internal successors, (3196), 10 states have internal predecessors, (3196), 0 states have call successors, (0), 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 01:17:55,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 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 01:17:55,062 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 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 01:17:55,062 INFO L175 Difference]: Start difference. First operand has 242 places, 464 transitions, 11091 flow. Second operand 10 states and 3196 transitions. [2023-08-31 01:17:55,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 605 transitions, 13865 flow [2023-08-31 01:17:56,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 605 transitions, 13525 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-08-31 01:17:56,486 INFO L231 Difference]: Finished difference. Result has 251 places, 493 transitions, 12066 flow [2023-08-31 01:17:56,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10790, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12066, PETRI_PLACES=251, PETRI_TRANSITIONS=493} [2023-08-31 01:17:56,486 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2023-08-31 01:17:56,486 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 493 transitions, 12066 flow [2023-08-31 01:17:56,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:17:56,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:56,487 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:56,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-31 01:17:56,487 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:17:56,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:56,488 INFO L85 PathProgramCache]: Analyzing trace with hash 2058422772, now seen corresponding path program 16 times [2023-08-31 01:17:56,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:56,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409780467] [2023-08-31 01:17:56,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:56,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:56,712 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:17:56,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:56,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409780467] [2023-08-31 01:17:56,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409780467] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:56,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:56,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:17:56,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767409332] [2023-08-31 01:17:56,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:56,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:17:56,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:56,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:17:56,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:17:56,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-31 01:17:56,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 493 transitions, 12066 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:17:56,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:56,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-31 01:17:56,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:59,400 INFO L130 PetriNetUnfolder]: 5876/10506 cut-off events. [2023-08-31 01:17:59,400 INFO L131 PetriNetUnfolder]: For 237561/237561 co-relation queries the response was YES. [2023-08-31 01:17:59,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77040 conditions, 10506 events. 5876/10506 cut-off events. For 237561/237561 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 81010 event pairs, 1653 based on Foata normal form. 6/10408 useless extension candidates. Maximal degree in co-relation 76922. Up to 7326 conditions per place. [2023-08-31 01:17:59,502 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 338 selfloop transitions, 210 changer transitions 6/554 dead transitions. [2023-08-31 01:17:59,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 554 transitions, 13639 flow [2023-08-31 01:17:59,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:17:59,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:17:59,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2249 transitions. [2023-08-31 01:17:59,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4167129886974245 [2023-08-31 01:17:59,505 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2249 transitions. [2023-08-31 01:17:59,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2249 transitions. [2023-08-31 01:17:59,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:59,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2249 transitions. [2023-08-31 01:17:59,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.2857142857143) internal successors, (2249), 7 states have internal predecessors, (2249), 0 states have call successors, (0), 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 01:17:59,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:59,509 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:17:59,509 INFO L175 Difference]: Start difference. First operand has 251 places, 493 transitions, 12066 flow. Second operand 7 states and 2249 transitions. [2023-08-31 01:17:59,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 554 transitions, 13639 flow [2023-08-31 01:18:01,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 554 transitions, 13398 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-08-31 01:18:01,234 INFO L231 Difference]: Finished difference. Result has 254 places, 491 transitions, 12181 flow [2023-08-31 01:18:01,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=11786, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12181, PETRI_PLACES=254, PETRI_TRANSITIONS=491} [2023-08-31 01:18:01,235 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2023-08-31 01:18:01,236 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 491 transitions, 12181 flow [2023-08-31 01:18:01,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:18:01,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:01,236 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:01,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-31 01:18:01,236 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:18:01,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:01,237 INFO L85 PathProgramCache]: Analyzing trace with hash 473239092, now seen corresponding path program 17 times [2023-08-31 01:18:01,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:01,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311866098] [2023-08-31 01:18:01,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:01,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:01,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:01,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:01,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311866098] [2023-08-31 01:18:01,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311866098] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:01,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:01,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:18:01,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856463034] [2023-08-31 01:18:01,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:01,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:18:01,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:01,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:18:01,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:18:01,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-31 01:18:01,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 491 transitions, 12181 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:18:01,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:01,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-31 01:18:01,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:04,298 INFO L130 PetriNetUnfolder]: 5881/10523 cut-off events. [2023-08-31 01:18:04,298 INFO L131 PetriNetUnfolder]: For 239781/239781 co-relation queries the response was YES. [2023-08-31 01:18:04,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77296 conditions, 10523 events. 5881/10523 cut-off events. For 239781/239781 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 81313 event pairs, 1567 based on Foata normal form. 12/10431 useless extension candidates. Maximal degree in co-relation 77177. Up to 7326 conditions per place. [2023-08-31 01:18:04,380 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 341 selfloop transitions, 215 changer transitions 1/557 dead transitions. [2023-08-31 01:18:04,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 557 transitions, 13914 flow [2023-08-31 01:18:04,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:18:04,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:18:04,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2246 transitions. [2023-08-31 01:18:04,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161571243283306 [2023-08-31 01:18:04,382 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2246 transitions. [2023-08-31 01:18:04,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2246 transitions. [2023-08-31 01:18:04,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:04,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2246 transitions. [2023-08-31 01:18:04,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.85714285714283) internal successors, (2246), 7 states have internal predecessors, (2246), 0 states have call successors, (0), 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 01:18:04,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:18:04,386 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:18:04,386 INFO L175 Difference]: Start difference. First operand has 254 places, 491 transitions, 12181 flow. Second operand 7 states and 2246 transitions. [2023-08-31 01:18:04,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 557 transitions, 13914 flow [2023-08-31 01:18:05,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 557 transitions, 13510 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-31 01:18:05,679 INFO L231 Difference]: Finished difference. Result has 258 places, 496 transitions, 12349 flow [2023-08-31 01:18:05,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=11786, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12349, PETRI_PLACES=258, PETRI_TRANSITIONS=496} [2023-08-31 01:18:05,680 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2023-08-31 01:18:05,680 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 496 transitions, 12349 flow [2023-08-31 01:18:05,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:18:05,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:05,681 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:05,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-31 01:18:05,681 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:18:05,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:05,681 INFO L85 PathProgramCache]: Analyzing trace with hash 941711906, now seen corresponding path program 18 times [2023-08-31 01:18:05,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:05,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424797818] [2023-08-31 01:18:05,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:05,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:05,918 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:05,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:05,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424797818] [2023-08-31 01:18:05,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424797818] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:05,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:05,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:18:05,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553575177] [2023-08-31 01:18:05,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:05,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:18:05,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:05,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:18:05,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:18:06,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-31 01:18:06,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 496 transitions, 12349 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:18:06,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:06,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-31 01:18:06,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:08,691 INFO L130 PetriNetUnfolder]: 5872/10494 cut-off events. [2023-08-31 01:18:08,691 INFO L131 PetriNetUnfolder]: For 244350/244350 co-relation queries the response was YES. [2023-08-31 01:18:08,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78039 conditions, 10494 events. 5872/10494 cut-off events. For 244350/244350 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 80902 event pairs, 1559 based on Foata normal form. 4/10394 useless extension candidates. Maximal degree in co-relation 77918. Up to 7326 conditions per place. [2023-08-31 01:18:08,784 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 333 selfloop transitions, 214 changer transitions 0/547 dead transitions. [2023-08-31 01:18:08,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 547 transitions, 13819 flow [2023-08-31 01:18:08,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:18:08,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:18:08,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2240 transitions. [2023-08-31 01:18:08,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4150453955901427 [2023-08-31 01:18:08,786 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2240 transitions. [2023-08-31 01:18:08,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2240 transitions. [2023-08-31 01:18:08,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:08,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2240 transitions. [2023-08-31 01:18:08,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.0) internal successors, (2240), 7 states have internal predecessors, (2240), 0 states have call successors, (0), 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 01:18:08,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:18:08,790 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:18:08,790 INFO L175 Difference]: Start difference. First operand has 258 places, 496 transitions, 12349 flow. Second operand 7 states and 2240 transitions. [2023-08-31 01:18:08,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 547 transitions, 13819 flow [2023-08-31 01:18:10,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 547 transitions, 13411 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-31 01:18:10,276 INFO L231 Difference]: Finished difference. Result has 259 places, 494 transitions, 12308 flow [2023-08-31 01:18:10,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=11880, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12308, PETRI_PLACES=259, PETRI_TRANSITIONS=494} [2023-08-31 01:18:10,276 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2023-08-31 01:18:10,276 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 494 transitions, 12308 flow [2023-08-31 01:18:10,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:18:10,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:10,277 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:10,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-31 01:18:10,277 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:18:10,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:10,277 INFO L85 PathProgramCache]: Analyzing trace with hash 421525821, now seen corresponding path program 15 times [2023-08-31 01:18:10,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:10,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297847952] [2023-08-31 01:18:10,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:10,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:10,551 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:10,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:10,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297847952] [2023-08-31 01:18:10,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297847952] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:10,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:10,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:18:10,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663270529] [2023-08-31 01:18:10,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:10,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:18:10,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:10,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:18:10,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:18:10,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-31 01:18:10,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 494 transitions, 12308 flow. Second operand has 8 states, 8 states have (on average 309.75) internal successors, (2478), 8 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:10,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:10,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-31 01:18:10,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:13,475 INFO L130 PetriNetUnfolder]: 6031/10821 cut-off events. [2023-08-31 01:18:13,476 INFO L131 PetriNetUnfolder]: For 243503/243503 co-relation queries the response was YES. [2023-08-31 01:18:13,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78996 conditions, 10821 events. 6031/10821 cut-off events. For 243503/243503 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 84913 event pairs, 799 based on Foata normal form. 4/10677 useless extension candidates. Maximal degree in co-relation 78876. Up to 5424 conditions per place. [2023-08-31 01:18:13,580 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 432 selfloop transitions, 254 changer transitions 1/687 dead transitions. [2023-08-31 01:18:13,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 687 transitions, 16986 flow [2023-08-31 01:18:13,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:18:13,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:18:13,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2558 transitions. [2023-08-31 01:18:13,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147211413748379 [2023-08-31 01:18:13,582 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2558 transitions. [2023-08-31 01:18:13,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2558 transitions. [2023-08-31 01:18:13,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:13,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2558 transitions. [2023-08-31 01:18:13,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 319.75) internal successors, (2558), 8 states have internal predecessors, (2558), 0 states have call successors, (0), 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 01:18:13,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 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 01:18:13,587 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 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 01:18:13,587 INFO L175 Difference]: Start difference. First operand has 259 places, 494 transitions, 12308 flow. Second operand 8 states and 2558 transitions. [2023-08-31 01:18:13,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 687 transitions, 16986 flow [2023-08-31 01:18:15,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 687 transitions, 16486 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-31 01:18:15,106 INFO L231 Difference]: Finished difference. Result has 267 places, 548 transitions, 14028 flow [2023-08-31 01:18:15,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=11880, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14028, PETRI_PLACES=267, PETRI_TRANSITIONS=548} [2023-08-31 01:18:15,107 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2023-08-31 01:18:15,107 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 548 transitions, 14028 flow [2023-08-31 01:18:15,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 309.75) internal successors, (2478), 8 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:15,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:15,108 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:15,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-31 01:18:15,108 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:18:15,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:15,108 INFO L85 PathProgramCache]: Analyzing trace with hash -181201292, now seen corresponding path program 19 times [2023-08-31 01:18:15,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:15,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137815069] [2023-08-31 01:18:15,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:15,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:15,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:15,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137815069] [2023-08-31 01:18:15,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137815069] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:15,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:15,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:18:15,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462055759] [2023-08-31 01:18:15,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:15,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:18:15,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:15,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:18:15,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:18:15,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:18:15,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 548 transitions, 14028 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:18:15,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:15,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:18:15,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:18,252 INFO L130 PetriNetUnfolder]: 6009/10785 cut-off events. [2023-08-31 01:18:18,252 INFO L131 PetriNetUnfolder]: For 263891/263891 co-relation queries the response was YES. [2023-08-31 01:18:18,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81350 conditions, 10785 events. 6009/10785 cut-off events. For 263891/263891 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 83986 event pairs, 1715 based on Foata normal form. 12/10797 useless extension candidates. Maximal degree in co-relation 81225. Up to 7297 conditions per place. [2023-08-31 01:18:18,363 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 365 selfloop transitions, 246 changer transitions 1/612 dead transitions. [2023-08-31 01:18:18,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 612 transitions, 15848 flow [2023-08-31 01:18:18,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:18:18,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:18:18,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2265 transitions. [2023-08-31 01:18:18,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4196775986659255 [2023-08-31 01:18:18,365 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2265 transitions. [2023-08-31 01:18:18,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2265 transitions. [2023-08-31 01:18:18,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:18,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2265 transitions. [2023-08-31 01:18:18,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.57142857142856) internal successors, (2265), 7 states have internal predecessors, (2265), 0 states have call successors, (0), 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 01:18:18,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:18:18,369 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:18:18,369 INFO L175 Difference]: Start difference. First operand has 267 places, 548 transitions, 14028 flow. Second operand 7 states and 2265 transitions. [2023-08-31 01:18:18,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 612 transitions, 15848 flow [2023-08-31 01:18:20,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 612 transitions, 15778 flow, removed 35 selfloop flow, removed 0 redundant places. [2023-08-31 01:18:20,171 INFO L231 Difference]: Finished difference. Result has 275 places, 550 transitions, 14538 flow [2023-08-31 01:18:20,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=13958, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14538, PETRI_PLACES=275, PETRI_TRANSITIONS=550} [2023-08-31 01:18:20,171 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2023-08-31 01:18:20,171 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 550 transitions, 14538 flow [2023-08-31 01:18:20,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:18:20,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:20,172 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:20,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-31 01:18:20,172 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:18:20,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:20,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1218142047, now seen corresponding path program 16 times [2023-08-31 01:18:20,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:20,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159904352] [2023-08-31 01:18:20,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:20,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:20,415 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:20,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:20,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159904352] [2023-08-31 01:18:20,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159904352] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:20,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:20,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:18:20,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500651290] [2023-08-31 01:18:20,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:20,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:18:20,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:20,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:18:20,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:18:20,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:18:20,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 550 transitions, 14538 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:18:20,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:20,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:18:20,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:23,646 INFO L130 PetriNetUnfolder]: 6029/10775 cut-off events. [2023-08-31 01:18:23,646 INFO L131 PetriNetUnfolder]: For 272514/272514 co-relation queries the response was YES. [2023-08-31 01:18:23,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82405 conditions, 10775 events. 6029/10775 cut-off events. For 272514/272514 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 83443 event pairs, 1579 based on Foata normal form. 26/10801 useless extension candidates. Maximal degree in co-relation 82277. Up to 4114 conditions per place. [2023-08-31 01:18:23,738 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 395 selfloop transitions, 253 changer transitions 0/648 dead transitions. [2023-08-31 01:18:23,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 648 transitions, 17152 flow [2023-08-31 01:18:23,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:18:23,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:18:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2271 transitions. [2023-08-31 01:18:23,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4207893274041134 [2023-08-31 01:18:23,740 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2271 transitions. [2023-08-31 01:18:23,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2271 transitions. [2023-08-31 01:18:23,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:23,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2271 transitions. [2023-08-31 01:18:23,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.42857142857144) internal successors, (2271), 7 states have internal predecessors, (2271), 0 states have call successors, (0), 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 01:18:23,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:18:23,744 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:18:23,744 INFO L175 Difference]: Start difference. First operand has 275 places, 550 transitions, 14538 flow. Second operand 7 states and 2271 transitions. [2023-08-31 01:18:23,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 648 transitions, 17152 flow [2023-08-31 01:18:25,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 648 transitions, 16771 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-31 01:18:25,328 INFO L231 Difference]: Finished difference. Result has 282 places, 570 transitions, 15285 flow [2023-08-31 01:18:25,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=14167, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15285, PETRI_PLACES=282, PETRI_TRANSITIONS=570} [2023-08-31 01:18:25,329 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2023-08-31 01:18:25,330 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 570 transitions, 15285 flow [2023-08-31 01:18:25,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:18:25,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:25,330 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:25,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-08-31 01:18:25,330 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:18:25,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:25,331 INFO L85 PathProgramCache]: Analyzing trace with hash -225720950, now seen corresponding path program 20 times [2023-08-31 01:18:25,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:25,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898445051] [2023-08-31 01:18:25,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:25,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:25,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:25,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898445051] [2023-08-31 01:18:25,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898445051] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:25,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:25,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:18:25,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474189608] [2023-08-31 01:18:25,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:25,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:18:25,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:25,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:18:25,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:18:25,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:18:25,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 570 transitions, 15285 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:18:25,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:25,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:18:25,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:28,667 INFO L130 PetriNetUnfolder]: 6035/10789 cut-off events. [2023-08-31 01:18:28,668 INFO L131 PetriNetUnfolder]: For 282152/282152 co-relation queries the response was YES. [2023-08-31 01:18:28,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83220 conditions, 10789 events. 6035/10789 cut-off events. For 282152/282152 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 83644 event pairs, 1701 based on Foata normal form. 16/10805 useless extension candidates. Maximal degree in co-relation 83089. Up to 7292 conditions per place. [2023-08-31 01:18:28,775 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 378 selfloop transitions, 256 changer transitions 0/634 dead transitions. [2023-08-31 01:18:28,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 634 transitions, 17163 flow [2023-08-31 01:18:28,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:18:28,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:18:28,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2267 transitions. [2023-08-31 01:18:28,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42004817491198815 [2023-08-31 01:18:28,777 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2267 transitions. [2023-08-31 01:18:28,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2267 transitions. [2023-08-31 01:18:28,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:28,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2267 transitions. [2023-08-31 01:18:28,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.85714285714283) internal successors, (2267), 7 states have internal predecessors, (2267), 0 states have call successors, (0), 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 01:18:28,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:18:28,781 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:18:28,781 INFO L175 Difference]: Start difference. First operand has 282 places, 570 transitions, 15285 flow. Second operand 7 states and 2267 transitions. [2023-08-31 01:18:28,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 634 transitions, 17163 flow [2023-08-31 01:18:30,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 634 transitions, 16638 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-08-31 01:18:30,593 INFO L231 Difference]: Finished difference. Result has 288 places, 579 transitions, 15575 flow [2023-08-31 01:18:30,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=14768, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15575, PETRI_PLACES=288, PETRI_TRANSITIONS=579} [2023-08-31 01:18:30,593 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2023-08-31 01:18:30,593 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 579 transitions, 15575 flow [2023-08-31 01:18:30,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:18:30,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:30,594 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:30,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-31 01:18:30,594 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:18:30,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:30,595 INFO L85 PathProgramCache]: Analyzing trace with hash 747282927, now seen corresponding path program 17 times [2023-08-31 01:18:30,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:30,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554240826] [2023-08-31 01:18:30,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:30,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:30,834 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:30,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:30,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554240826] [2023-08-31 01:18:30,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554240826] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:30,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:30,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:18:30,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770183723] [2023-08-31 01:18:30,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:30,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:18:30,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:30,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:18:30,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:18:31,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:18:31,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 579 transitions, 15575 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:18:31,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:31,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:18:31,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:33,997 INFO L130 PetriNetUnfolder]: 6037/10771 cut-off events. [2023-08-31 01:18:33,997 INFO L131 PetriNetUnfolder]: For 277139/277139 co-relation queries the response was YES. [2023-08-31 01:18:34,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83956 conditions, 10771 events. 6037/10771 cut-off events. For 277139/277139 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 83273 event pairs, 1555 based on Foata normal form. 6/10777 useless extension candidates. Maximal degree in co-relation 83822. Up to 4128 conditions per place. [2023-08-31 01:18:34,110 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 394 selfloop transitions, 260 changer transitions 0/654 dead transitions. [2023-08-31 01:18:34,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 654 transitions, 17630 flow [2023-08-31 01:18:34,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:18:34,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:18:34,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2271 transitions. [2023-08-31 01:18:34,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4207893274041134 [2023-08-31 01:18:34,112 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2271 transitions. [2023-08-31 01:18:34,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2271 transitions. [2023-08-31 01:18:34,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:34,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2271 transitions. [2023-08-31 01:18:34,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.42857142857144) internal successors, (2271), 7 states have internal predecessors, (2271), 0 states have call successors, (0), 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 01:18:34,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:18:34,116 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:18:34,116 INFO L175 Difference]: Start difference. First operand has 288 places, 579 transitions, 15575 flow. Second operand 7 states and 2271 transitions. [2023-08-31 01:18:34,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 654 transitions, 17630 flow [2023-08-31 01:18:36,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 654 transitions, 17142 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-31 01:18:36,101 INFO L231 Difference]: Finished difference. Result has 291 places, 583 transitions, 15811 flow [2023-08-31 01:18:36,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=15049, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15811, PETRI_PLACES=291, PETRI_TRANSITIONS=583} [2023-08-31 01:18:36,101 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 261 predicate places. [2023-08-31 01:18:36,101 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 583 transitions, 15811 flow [2023-08-31 01:18:36,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:18:36,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:36,102 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:36,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-08-31 01:18:36,102 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:18:36,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:36,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1792142250, now seen corresponding path program 21 times [2023-08-31 01:18:36,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:36,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861136046] [2023-08-31 01:18:36,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:36,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:36,342 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:36,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:36,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861136046] [2023-08-31 01:18:36,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861136046] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:36,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:36,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:18:36,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972739470] [2023-08-31 01:18:36,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:36,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:18:36,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:36,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:18:36,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:18:36,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:18:36,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 583 transitions, 15811 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:18:36,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:36,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:18:36,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:39,665 INFO L130 PetriNetUnfolder]: 6005/10711 cut-off events. [2023-08-31 01:18:39,665 INFO L131 PetriNetUnfolder]: For 278983/278983 co-relation queries the response was YES. [2023-08-31 01:18:39,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83062 conditions, 10711 events. 6005/10711 cut-off events. For 278983/278983 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 82675 event pairs, 1701 based on Foata normal form. 12/10723 useless extension candidates. Maximal degree in co-relation 82928. Up to 7266 conditions per place. [2023-08-31 01:18:39,771 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 380 selfloop transitions, 256 changer transitions 1/637 dead transitions. [2023-08-31 01:18:39,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 637 transitions, 17425 flow [2023-08-31 01:18:39,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:18:39,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:18:39,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2265 transitions. [2023-08-31 01:18:39,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4196775986659255 [2023-08-31 01:18:39,773 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2265 transitions. [2023-08-31 01:18:39,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2265 transitions. [2023-08-31 01:18:39,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:39,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2265 transitions. [2023-08-31 01:18:39,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.57142857142856) internal successors, (2265), 7 states have internal predecessors, (2265), 0 states have call successors, (0), 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 01:18:39,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:18:39,777 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:18:39,777 INFO L175 Difference]: Start difference. First operand has 291 places, 583 transitions, 15811 flow. Second operand 7 states and 2265 transitions. [2023-08-31 01:18:39,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 637 transitions, 17425 flow [2023-08-31 01:18:41,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 637 transitions, 17131 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-31 01:18:41,346 INFO L231 Difference]: Finished difference. Result has 296 places, 581 transitions, 15968 flow [2023-08-31 01:18:41,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=15484, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15968, PETRI_PLACES=296, PETRI_TRANSITIONS=581} [2023-08-31 01:18:41,346 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2023-08-31 01:18:41,346 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 581 transitions, 15968 flow [2023-08-31 01:18:41,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:18:41,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:41,347 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:41,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-08-31 01:18:41,347 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:18:41,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:41,347 INFO L85 PathProgramCache]: Analyzing trace with hash 444735361, now seen corresponding path program 18 times [2023-08-31 01:18:41,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:41,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613005075] [2023-08-31 01:18:41,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:41,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:41,588 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:41,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:41,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613005075] [2023-08-31 01:18:41,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613005075] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:41,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:41,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:18:41,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858654258] [2023-08-31 01:18:41,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:41,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:18:41,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:41,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:18:41,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:18:41,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:18:41,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 581 transitions, 15968 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:18:41,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:41,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:18:41,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:44,647 INFO L130 PetriNetUnfolder]: 5981/10649 cut-off events. [2023-08-31 01:18:44,647 INFO L131 PetriNetUnfolder]: For 277146/277146 co-relation queries the response was YES. [2023-08-31 01:18:44,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82958 conditions, 10649 events. 5981/10649 cut-off events. For 277146/277146 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 81942 event pairs, 1535 based on Foata normal form. 10/10659 useless extension candidates. Maximal degree in co-relation 82823. Up to 4068 conditions per place. [2023-08-31 01:18:44,755 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 391 selfloop transitions, 256 changer transitions 0/647 dead transitions. [2023-08-31 01:18:44,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 647 transitions, 17860 flow [2023-08-31 01:18:44,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:18:44,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:18:44,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2267 transitions. [2023-08-31 01:18:44,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42004817491198815 [2023-08-31 01:18:44,757 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2267 transitions. [2023-08-31 01:18:44,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2267 transitions. [2023-08-31 01:18:44,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:44,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2267 transitions. [2023-08-31 01:18:44,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.85714285714283) internal successors, (2267), 7 states have internal predecessors, (2267), 0 states have call successors, (0), 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 01:18:44,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:18:44,761 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:18:44,761 INFO L175 Difference]: Start difference. First operand has 296 places, 581 transitions, 15968 flow. Second operand 7 states and 2267 transitions. [2023-08-31 01:18:44,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 647 transitions, 17860 flow [2023-08-31 01:18:46,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 647 transitions, 17343 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-31 01:18:46,528 INFO L231 Difference]: Finished difference. Result has 296 places, 584 transitions, 16063 flow [2023-08-31 01:18:46,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=15367, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16063, PETRI_PLACES=296, PETRI_TRANSITIONS=584} [2023-08-31 01:18:46,528 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2023-08-31 01:18:46,529 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 584 transitions, 16063 flow [2023-08-31 01:18:46,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:18:46,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:46,529 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:46,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-08-31 01:18:46,529 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:18:46,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:46,529 INFO L85 PathProgramCache]: Analyzing trace with hash 301631524, now seen corresponding path program 22 times [2023-08-31 01:18:46,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:46,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188463915] [2023-08-31 01:18:46,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:46,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:46,787 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:46,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:46,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188463915] [2023-08-31 01:18:46,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188463915] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:46,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:46,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:18:46,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804363810] [2023-08-31 01:18:46,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:46,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:18:46,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:46,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:18:46,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:18:47,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-31 01:18:47,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 584 transitions, 16063 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:18:47,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:47,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-31 01:18:47,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:50,101 INFO L130 PetriNetUnfolder]: 6115/10945 cut-off events. [2023-08-31 01:18:50,101 INFO L131 PetriNetUnfolder]: For 283656/283656 co-relation queries the response was YES. [2023-08-31 01:18:50,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84292 conditions, 10945 events. 6115/10945 cut-off events. For 283656/283656 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 85851 event pairs, 885 based on Foata normal form. 8/10953 useless extension candidates. Maximal degree in co-relation 84159. Up to 5029 conditions per place. [2023-08-31 01:18:50,219 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 349 selfloop transitions, 340 changer transitions 0/689 dead transitions. [2023-08-31 01:18:50,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 689 transitions, 18560 flow [2023-08-31 01:18:50,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:18:50,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:18:50,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2878 transitions. [2023-08-31 01:18:50,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41475716962098286 [2023-08-31 01:18:50,223 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2878 transitions. [2023-08-31 01:18:50,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2878 transitions. [2023-08-31 01:18:50,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:50,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2878 transitions. [2023-08-31 01:18:50,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 319.77777777777777) internal successors, (2878), 9 states have internal predecessors, (2878), 0 states have call successors, (0), 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 01:18:50,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 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 01:18:50,228 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 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 01:18:50,228 INFO L175 Difference]: Start difference. First operand has 296 places, 584 transitions, 16063 flow. Second operand 9 states and 2878 transitions. [2023-08-31 01:18:50,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 689 transitions, 18560 flow [2023-08-31 01:18:52,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 689 transitions, 18107 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-08-31 01:18:52,293 INFO L231 Difference]: Finished difference. Result has 299 places, 597 transitions, 16611 flow [2023-08-31 01:18:52,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=15581, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16611, PETRI_PLACES=299, PETRI_TRANSITIONS=597} [2023-08-31 01:18:52,294 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2023-08-31 01:18:52,294 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 597 transitions, 16611 flow [2023-08-31 01:18:52,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:18:52,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:52,294 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:52,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-08-31 01:18:52,294 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:18:52,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:52,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1860640349, now seen corresponding path program 19 times [2023-08-31 01:18:52,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:52,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82919266] [2023-08-31 01:18:52,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:52,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:52,520 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:52,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:52,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82919266] [2023-08-31 01:18:52,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82919266] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:52,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:52,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:18:52,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393338400] [2023-08-31 01:18:52,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:52,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:18:52,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:52,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:18:52,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:18:52,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:18:52,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 597 transitions, 16611 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:18:52,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:52,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:18:52,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:55,649 INFO L130 PetriNetUnfolder]: 6105/10923 cut-off events. [2023-08-31 01:18:55,649 INFO L131 PetriNetUnfolder]: For 289853/289853 co-relation queries the response was YES. [2023-08-31 01:18:55,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86457 conditions, 10923 events. 6105/10923 cut-off events. For 289853/289853 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 84918 event pairs, 1619 based on Foata normal form. 4/10927 useless extension candidates. Maximal degree in co-relation 86324. Up to 4042 conditions per place. [2023-08-31 01:18:55,766 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 398 selfloop transitions, 255 changer transitions 4/657 dead transitions. [2023-08-31 01:18:55,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 657 transitions, 18416 flow [2023-08-31 01:18:55,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:18:55,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:18:55,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2262 transitions. [2023-08-31 01:18:55,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4191217342968316 [2023-08-31 01:18:55,768 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2262 transitions. [2023-08-31 01:18:55,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2262 transitions. [2023-08-31 01:18:55,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:55,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2262 transitions. [2023-08-31 01:18:55,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.14285714285717) internal successors, (2262), 7 states have internal predecessors, (2262), 0 states have call successors, (0), 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 01:18:55,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:18:55,772 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:18:55,772 INFO L175 Difference]: Start difference. First operand has 299 places, 597 transitions, 16611 flow. Second operand 7 states and 2262 transitions. [2023-08-31 01:18:55,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 657 transitions, 18416 flow [2023-08-31 01:18:57,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 657 transitions, 17823 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 01:18:57,832 INFO L231 Difference]: Finished difference. Result has 302 places, 596 transitions, 16516 flow [2023-08-31 01:18:57,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=16032, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16516, PETRI_PLACES=302, PETRI_TRANSITIONS=596} [2023-08-31 01:18:57,833 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2023-08-31 01:18:57,833 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 596 transitions, 16516 flow [2023-08-31 01:18:57,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:18:57,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:57,833 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:57,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-08-31 01:18:57,833 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:18:57,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:57,834 INFO L85 PathProgramCache]: Analyzing trace with hash -769401119, now seen corresponding path program 20 times [2023-08-31 01:18:57,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:57,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621620471] [2023-08-31 01:18:57,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:57,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:58,112 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:58,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:58,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621620471] [2023-08-31 01:18:58,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621620471] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:58,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:58,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:18:58,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986503285] [2023-08-31 01:18:58,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:58,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:18:58,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:58,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:18:58,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:18:58,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-31 01:18:58,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 596 transitions, 16516 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:18:58,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:58,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-31 01:18:58,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:19:01,251 INFO L130 PetriNetUnfolder]: 6132/10986 cut-off events. [2023-08-31 01:19:01,252 INFO L131 PetriNetUnfolder]: For 289119/289119 co-relation queries the response was YES. [2023-08-31 01:19:01,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85937 conditions, 10986 events. 6132/10986 cut-off events. For 289119/289119 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 85949 event pairs, 1341 based on Foata normal form. 4/10990 useless extension candidates. Maximal degree in co-relation 85819. Up to 6043 conditions per place. [2023-08-31 01:19:01,372 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 415 selfloop transitions, 299 changer transitions 1/715 dead transitions. [2023-08-31 01:19:01,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 715 transitions, 19765 flow [2023-08-31 01:19:01,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:19:01,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:19:01,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2240 transitions. [2023-08-31 01:19:01,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4150453955901427 [2023-08-31 01:19:01,374 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2240 transitions. [2023-08-31 01:19:01,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2240 transitions. [2023-08-31 01:19:01,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:19:01,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2240 transitions. [2023-08-31 01:19:01,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.0) internal successors, (2240), 7 states have internal predecessors, (2240), 0 states have call successors, (0), 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 01:19:01,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:19:01,379 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:19:01,379 INFO L175 Difference]: Start difference. First operand has 302 places, 596 transitions, 16516 flow. Second operand 7 states and 2240 transitions. [2023-08-31 01:19:01,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 715 transitions, 19765 flow [2023-08-31 01:19:03,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 715 transitions, 19338 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-31 01:19:03,339 INFO L231 Difference]: Finished difference. Result has 307 places, 616 transitions, 17596 flow [2023-08-31 01:19:03,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=16035, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17596, PETRI_PLACES=307, PETRI_TRANSITIONS=616} [2023-08-31 01:19:03,340 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2023-08-31 01:19:03,340 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 616 transitions, 17596 flow [2023-08-31 01:19:03,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:19:03,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:19:03,340 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:19:03,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-08-31 01:19:03,341 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:19:03,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:19:03,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1662687720, now seen corresponding path program 23 times [2023-08-31 01:19:03,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:19:03,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120980294] [2023-08-31 01:19:03,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:19:03,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:19:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:19:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:19:03,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:19:03,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120980294] [2023-08-31 01:19:03,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120980294] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:19:03,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:19:03,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:19:03,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057210125] [2023-08-31 01:19:03,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:19:03,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:19:03,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:19:03,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:19:03,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:19:03,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:19:03,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 616 transitions, 17596 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:19:03,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:19:03,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:19:03,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:19:06,907 INFO L130 PetriNetUnfolder]: 6127/10967 cut-off events. [2023-08-31 01:19:06,907 INFO L131 PetriNetUnfolder]: For 316683/316683 co-relation queries the response was YES. [2023-08-31 01:19:06,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87311 conditions, 10967 events. 6127/10967 cut-off events. For 316683/316683 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 85405 event pairs, 1751 based on Foata normal form. 4/10971 useless extension candidates. Maximal degree in co-relation 87190. Up to 7251 conditions per place. [2023-08-31 01:19:07,007 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 398 selfloop transitions, 261 changer transitions 0/659 dead transitions. [2023-08-31 01:19:07,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 659 transitions, 19245 flow [2023-08-31 01:19:07,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:19:07,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:19:07,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2254 transitions. [2023-08-31 01:19:07,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176394293125811 [2023-08-31 01:19:07,009 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2254 transitions. [2023-08-31 01:19:07,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2254 transitions. [2023-08-31 01:19:07,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:19:07,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2254 transitions. [2023-08-31 01:19:07,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 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 01:19:07,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:19:07,013 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:19:07,013 INFO L175 Difference]: Start difference. First operand has 307 places, 616 transitions, 17596 flow. Second operand 7 states and 2254 transitions. [2023-08-31 01:19:07,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 659 transitions, 19245 flow [2023-08-31 01:19:08,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 659 transitions, 18919 flow, removed 20 selfloop flow, removed 4 redundant places. [2023-08-31 01:19:08,656 INFO L231 Difference]: Finished difference. Result has 309 places, 617 transitions, 17798 flow [2023-08-31 01:19:08,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=17195, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17798, PETRI_PLACES=309, PETRI_TRANSITIONS=617} [2023-08-31 01:19:08,657 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2023-08-31 01:19:08,657 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 617 transitions, 17798 flow [2023-08-31 01:19:08,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:19:08,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:19:08,657 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:19:08,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-08-31 01:19:08,658 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:19:08,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:19:08,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1151670496, now seen corresponding path program 24 times [2023-08-31 01:19:08,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:19:08,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225762569] [2023-08-31 01:19:08,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:19:08,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:19:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:19:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:19:08,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:19:08,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225762569] [2023-08-31 01:19:08,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225762569] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:19:08,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:19:08,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:19:08,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200701654] [2023-08-31 01:19:08,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:19:08,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:19:08,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:19:08,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:19:08,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:19:09,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-31 01:19:09,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 617 transitions, 17798 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:19:09,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:19:09,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-31 01:19:09,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:19:12,575 INFO L130 PetriNetUnfolder]: 6277/11245 cut-off events. [2023-08-31 01:19:12,575 INFO L131 PetriNetUnfolder]: For 316533/316533 co-relation queries the response was YES. [2023-08-31 01:19:12,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90213 conditions, 11245 events. 6277/11245 cut-off events. For 316533/316533 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 88652 event pairs, 707 based on Foata normal form. 8/11253 useless extension candidates. Maximal degree in co-relation 90093. Up to 3786 conditions per place. [2023-08-31 01:19:12,690 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 412 selfloop transitions, 361 changer transitions 0/773 dead transitions. [2023-08-31 01:19:12,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 773 transitions, 21756 flow [2023-08-31 01:19:12,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:19:12,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:19:12,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2881 transitions. [2023-08-31 01:19:12,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4151895085747226 [2023-08-31 01:19:12,692 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2881 transitions. [2023-08-31 01:19:12,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2881 transitions. [2023-08-31 01:19:12,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:19:12,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2881 transitions. [2023-08-31 01:19:12,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 320.1111111111111) internal successors, (2881), 9 states have internal predecessors, (2881), 0 states have call successors, (0), 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 01:19:12,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 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 01:19:12,697 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 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 01:19:12,697 INFO L175 Difference]: Start difference. First operand has 309 places, 617 transitions, 17798 flow. Second operand 9 states and 2881 transitions. [2023-08-31 01:19:12,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 773 transitions, 21756 flow [2023-08-31 01:19:14,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 773 transitions, 21047 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-31 01:19:14,760 INFO L231 Difference]: Finished difference. Result has 316 places, 644 transitions, 19098 flow [2023-08-31 01:19:14,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=17139, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19098, PETRI_PLACES=316, PETRI_TRANSITIONS=644} [2023-08-31 01:19:14,761 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2023-08-31 01:19:14,761 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 644 transitions, 19098 flow [2023-08-31 01:19:14,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:19:14,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:19:14,762 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:19:14,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-08-31 01:19:14,762 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:19:14,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:19:14,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1672906338, now seen corresponding path program 25 times [2023-08-31 01:19:14,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:19:14,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999060602] [2023-08-31 01:19:14,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:19:14,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:19:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:19:14,972 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:19:14,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:19:14,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999060602] [2023-08-31 01:19:14,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999060602] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:19:14,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:19:14,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:19:14,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672709179] [2023-08-31 01:19:14,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:19:14,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:19:14,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:19:14,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:19:14,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:19:15,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:19:15,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 644 transitions, 19098 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:19:15,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:19:15,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:19:15,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:19:18,518 INFO L130 PetriNetUnfolder]: 6689/12023 cut-off events. [2023-08-31 01:19:18,518 INFO L131 PetriNetUnfolder]: For 360624/360624 co-relation queries the response was YES. [2023-08-31 01:19:18,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99466 conditions, 12023 events. 6689/12023 cut-off events. For 360624/360624 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 95742 event pairs, 1381 based on Foata normal form. 8/12031 useless extension candidates. Maximal degree in co-relation 99341. Up to 3366 conditions per place. [2023-08-31 01:19:18,649 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 507 selfloop transitions, 282 changer transitions 0/789 dead transitions. [2023-08-31 01:19:18,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 789 transitions, 23280 flow [2023-08-31 01:19:18,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:19:18,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:19:18,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2265 transitions. [2023-08-31 01:19:18,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4196775986659255 [2023-08-31 01:19:18,651 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2265 transitions. [2023-08-31 01:19:18,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2265 transitions. [2023-08-31 01:19:18,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:19:18,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2265 transitions. [2023-08-31 01:19:18,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.57142857142856) internal successors, (2265), 7 states have internal predecessors, (2265), 0 states have call successors, (0), 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 01:19:18,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:19:18,655 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:19:18,655 INFO L175 Difference]: Start difference. First operand has 316 places, 644 transitions, 19098 flow. Second operand 7 states and 2265 transitions. [2023-08-31 01:19:18,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 789 transitions, 23280 flow [2023-08-31 01:19:21,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 789 transitions, 22724 flow, removed 37 selfloop flow, removed 5 redundant places. [2023-08-31 01:19:21,455 INFO L231 Difference]: Finished difference. Result has 320 places, 660 transitions, 19806 flow [2023-08-31 01:19:21,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=18578, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19806, PETRI_PLACES=320, PETRI_TRANSITIONS=660} [2023-08-31 01:19:21,456 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2023-08-31 01:19:21,456 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 660 transitions, 19806 flow [2023-08-31 01:19:21,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:19:21,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:19:21,456 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:19:21,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-08-31 01:19:21,456 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:19:21,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:19:21,456 INFO L85 PathProgramCache]: Analyzing trace with hash -547474396, now seen corresponding path program 26 times [2023-08-31 01:19:21,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:19:21,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085674653] [2023-08-31 01:19:21,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:19:21,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:19:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:19:21,661 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:19:21,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:19:21,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085674653] [2023-08-31 01:19:21,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085674653] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:19:21,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:19:21,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:19:21,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061877491] [2023-08-31 01:19:21,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:19:21,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:19:21,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:19:21,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:19:21,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:19:21,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:19:21,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 660 transitions, 19806 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:19:21,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:19:21,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:19:21,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:19:25,623 INFO L130 PetriNetUnfolder]: 6650/11934 cut-off events. [2023-08-31 01:19:25,623 INFO L131 PetriNetUnfolder]: For 368474/368474 co-relation queries the response was YES. [2023-08-31 01:19:25,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98759 conditions, 11934 events. 6650/11934 cut-off events. For 368474/368474 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 94669 event pairs, 1577 based on Foata normal form. 10/11944 useless extension candidates. Maximal degree in co-relation 98633. Up to 3857 conditions per place. [2023-08-31 01:19:25,737 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 434 selfloop transitions, 339 changer transitions 0/773 dead transitions. [2023-08-31 01:19:25,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 773 transitions, 23156 flow [2023-08-31 01:19:25,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:19:25,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:19:25,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2268 transitions. [2023-08-31 01:19:25,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42023346303501946 [2023-08-31 01:19:25,739 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2268 transitions. [2023-08-31 01:19:25,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2268 transitions. [2023-08-31 01:19:25,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:19:25,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2268 transitions. [2023-08-31 01:19:25,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.0) internal successors, (2268), 7 states have internal predecessors, (2268), 0 states have call successors, (0), 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 01:19:25,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:19:25,743 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:19:25,743 INFO L175 Difference]: Start difference. First operand has 320 places, 660 transitions, 19806 flow. Second operand 7 states and 2268 transitions. [2023-08-31 01:19:25,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 773 transitions, 23156 flow [2023-08-31 01:19:28,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 773 transitions, 22785 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-08-31 01:19:28,219 INFO L231 Difference]: Finished difference. Result has 326 places, 673 transitions, 20783 flow [2023-08-31 01:19:28,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=19457, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=20783, PETRI_PLACES=326, PETRI_TRANSITIONS=673} [2023-08-31 01:19:28,220 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 296 predicate places. [2023-08-31 01:19:28,220 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 673 transitions, 20783 flow [2023-08-31 01:19:28,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:19:28,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:19:28,220 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:19:28,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-08-31 01:19:28,220 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:19:28,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:19:28,221 INFO L85 PathProgramCache]: Analyzing trace with hash -238784307, now seen corresponding path program 21 times [2023-08-31 01:19:28,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:19:28,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202501612] [2023-08-31 01:19:28,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:19:28,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:19:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:19:28,449 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:19:28,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:19:28,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202501612] [2023-08-31 01:19:28,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202501612] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:19:28,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:19:28,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:19:28,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890073818] [2023-08-31 01:19:28,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:19:28,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:19:28,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:19:28,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:19:28,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:19:28,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:19:28,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 673 transitions, 20783 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:19:28,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:19:28,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:19:28,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:19:32,264 INFO L130 PetriNetUnfolder]: 6659/11951 cut-off events. [2023-08-31 01:19:32,264 INFO L131 PetriNetUnfolder]: For 379255/379255 co-relation queries the response was YES. [2023-08-31 01:19:32,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98937 conditions, 11951 events. 6659/11951 cut-off events. For 379255/379255 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 94744 event pairs, 1895 based on Foata normal form. 8/11959 useless extension candidates. Maximal degree in co-relation 98809. Up to 7602 conditions per place. [2023-08-31 01:19:32,401 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 436 selfloop transitions, 319 changer transitions 0/755 dead transitions. [2023-08-31 01:19:32,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 755 transitions, 23338 flow [2023-08-31 01:19:32,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:19:32,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:19:32,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2269 transitions. [2023-08-31 01:19:32,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4204187511580508 [2023-08-31 01:19:32,403 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2269 transitions. [2023-08-31 01:19:32,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2269 transitions. [2023-08-31 01:19:32,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:19:32,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2269 transitions. [2023-08-31 01:19:32,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.14285714285717) internal successors, (2269), 7 states have internal predecessors, (2269), 0 states have call successors, (0), 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 01:19:32,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:19:32,407 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:19:32,407 INFO L175 Difference]: Start difference. First operand has 326 places, 673 transitions, 20783 flow. Second operand 7 states and 2269 transitions. [2023-08-31 01:19:32,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 755 transitions, 23338 flow [2023-08-31 01:19:35,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 755 transitions, 22874 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-31 01:19:35,307 INFO L231 Difference]: Finished difference. Result has 333 places, 684 transitions, 21530 flow [2023-08-31 01:19:35,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=20325, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=21530, PETRI_PLACES=333, PETRI_TRANSITIONS=684} [2023-08-31 01:19:35,308 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 303 predicate places. [2023-08-31 01:19:35,308 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 684 transitions, 21530 flow [2023-08-31 01:19:35,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:19:35,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:19:35,309 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:19:35,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-08-31 01:19:35,309 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:19:35,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:19:35,310 INFO L85 PathProgramCache]: Analyzing trace with hash -68082012, now seen corresponding path program 27 times [2023-08-31 01:19:35,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:19:35,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203784482] [2023-08-31 01:19:35,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:19:35,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:19:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:19:35,568 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:19:35,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:19:35,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203784482] [2023-08-31 01:19:35,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203784482] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:19:35,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:19:35,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:19:35,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902422083] [2023-08-31 01:19:35,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:19:35,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:19:35,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:19:35,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:19:35,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:19:35,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-31 01:19:35,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 684 transitions, 21530 flow. Second operand has 8 states, 8 states have (on average 309.75) internal successors, (2478), 8 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:35,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:19:35,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-31 01:19:35,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:19:39,821 INFO L130 PetriNetUnfolder]: 6677/11991 cut-off events. [2023-08-31 01:19:39,821 INFO L131 PetriNetUnfolder]: For 382643/382643 co-relation queries the response was YES. [2023-08-31 01:19:39,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100572 conditions, 11991 events. 6677/11991 cut-off events. For 382643/382643 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 95530 event pairs, 783 based on Foata normal form. 4/11995 useless extension candidates. Maximal degree in co-relation 100440. Up to 4835 conditions per place. [2023-08-31 01:19:39,951 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 483 selfloop transitions, 321 changer transitions 0/804 dead transitions. [2023-08-31 01:19:39,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 804 transitions, 24786 flow [2023-08-31 01:19:39,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:19:39,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:19:39,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2556 transitions. [2023-08-31 01:19:39,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4143968871595331 [2023-08-31 01:19:39,953 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2556 transitions. [2023-08-31 01:19:39,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2556 transitions. [2023-08-31 01:19:39,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:19:39,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2556 transitions. [2023-08-31 01:19:39,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 319.5) internal successors, (2556), 8 states have internal predecessors, (2556), 0 states have call successors, (0), 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 01:19:39,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 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 01:19:39,957 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 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 01:19:39,958 INFO L175 Difference]: Start difference. First operand has 333 places, 684 transitions, 21530 flow. Second operand 8 states and 2556 transitions. [2023-08-31 01:19:39,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 804 transitions, 24786 flow [2023-08-31 01:19:42,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 804 transitions, 24250 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-08-31 01:19:42,711 INFO L231 Difference]: Finished difference. Result has 337 places, 702 transitions, 22312 flow [2023-08-31 01:19:42,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=20942, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=22312, PETRI_PLACES=337, PETRI_TRANSITIONS=702} [2023-08-31 01:19:42,712 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 307 predicate places. [2023-08-31 01:19:42,712 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 702 transitions, 22312 flow [2023-08-31 01:19:42,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 309.75) internal successors, (2478), 8 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:42,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:19:42,712 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:19:42,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-08-31 01:19:42,713 INFO L420 AbstractCegarLoop]: === Iteration 59 === 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 01:19:42,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:19:42,713 INFO L85 PathProgramCache]: Analyzing trace with hash 2017718955, now seen corresponding path program 22 times [2023-08-31 01:19:42,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:19:42,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830895299] [2023-08-31 01:19:42,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:19:42,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:19:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:19:42,913 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:19:42,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:19:42,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830895299] [2023-08-31 01:19:42,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830895299] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:19:42,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:19:42,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:19:42,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526603547] [2023-08-31 01:19:42,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:19:42,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:19:42,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:19:42,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:19:42,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:19:43,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-31 01:19:43,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 702 transitions, 22312 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:19:43,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:19:43,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-31 01:19:43,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:19:47,181 INFO L130 PetriNetUnfolder]: 6673/11987 cut-off events. [2023-08-31 01:19:47,181 INFO L131 PetriNetUnfolder]: For 412287/412287 co-relation queries the response was YES. [2023-08-31 01:19:47,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102985 conditions, 11987 events. 6673/11987 cut-off events. For 412287/412287 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 95177 event pairs, 1849 based on Foata normal form. 4/11991 useless extension candidates. Maximal degree in co-relation 102854. Up to 7634 conditions per place. [2023-08-31 01:19:47,292 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 443 selfloop transitions, 332 changer transitions 5/780 dead transitions. [2023-08-31 01:19:47,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 780 transitions, 24659 flow [2023-08-31 01:19:47,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:19:47,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:19:47,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2246 transitions. [2023-08-31 01:19:47,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161571243283306 [2023-08-31 01:19:47,294 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2246 transitions. [2023-08-31 01:19:47,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2246 transitions. [2023-08-31 01:19:47,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:19:47,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2246 transitions. [2023-08-31 01:19:47,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.85714285714283) internal successors, (2246), 7 states have internal predecessors, (2246), 0 states have call successors, (0), 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 01:19:47,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:19:47,298 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:19:47,298 INFO L175 Difference]: Start difference. First operand has 337 places, 702 transitions, 22312 flow. Second operand 7 states and 2246 transitions. [2023-08-31 01:19:47,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 780 transitions, 24659 flow [2023-08-31 01:19:50,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 780 transitions, 24333 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-08-31 01:19:50,170 INFO L231 Difference]: Finished difference. Result has 340 places, 699 transitions, 22509 flow [2023-08-31 01:19:50,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=21939, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=332, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22509, PETRI_PLACES=340, PETRI_TRANSITIONS=699} [2023-08-31 01:19:50,170 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 310 predicate places. [2023-08-31 01:19:50,170 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 699 transitions, 22509 flow [2023-08-31 01:19:50,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:19:50,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:19:50,171 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:19:50,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-08-31 01:19:50,171 INFO L420 AbstractCegarLoop]: === Iteration 60 === 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 01:19:50,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:19:50,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1813531806, now seen corresponding path program 28 times [2023-08-31 01:19:50,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:19:50,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108125370] [2023-08-31 01:19:50,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:19:50,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:19:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:19:50,408 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:19:50,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:19:50,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108125370] [2023-08-31 01:19:50,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108125370] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:19:50,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:19:50,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:19:50,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576187731] [2023-08-31 01:19:50,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:19:50,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:19:50,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:19:50,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:19:50,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:19:50,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:19:50,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 699 transitions, 22509 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:19:50,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:19:50,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:19:50,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:19:54,451 INFO L130 PetriNetUnfolder]: 6651/11943 cut-off events. [2023-08-31 01:19:54,451 INFO L131 PetriNetUnfolder]: For 414860/414860 co-relation queries the response was YES. [2023-08-31 01:19:54,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102976 conditions, 11943 events. 6651/11943 cut-off events. For 414860/414860 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 94447 event pairs, 1765 based on Foata normal form. 6/11949 useless extension candidates. Maximal degree in co-relation 102845. Up to 3870 conditions per place. [2023-08-31 01:19:54,570 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 507 selfloop transitions, 273 changer transitions 6/786 dead transitions. [2023-08-31 01:19:54,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 786 transitions, 25087 flow [2023-08-31 01:19:54,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:19:54,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:19:54,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2259 transitions. [2023-08-31 01:19:54,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41856586992773764 [2023-08-31 01:19:54,572 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2259 transitions. [2023-08-31 01:19:54,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2259 transitions. [2023-08-31 01:19:54,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:19:54,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2259 transitions. [2023-08-31 01:19:54,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.7142857142857) internal successors, (2259), 7 states have internal predecessors, (2259), 0 states have call successors, (0), 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 01:19:54,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:19:54,576 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:19:54,576 INFO L175 Difference]: Start difference. First operand has 340 places, 699 transitions, 22509 flow. Second operand 7 states and 2259 transitions. [2023-08-31 01:19:54,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 786 transitions, 25087 flow [2023-08-31 01:19:57,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 786 transitions, 24586 flow, removed 27 selfloop flow, removed 3 redundant places. [2023-08-31 01:19:57,194 INFO L231 Difference]: Finished difference. Result has 342 places, 696 transitions, 22475 flow [2023-08-31 01:19:57,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=21957, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22475, PETRI_PLACES=342, PETRI_TRANSITIONS=696} [2023-08-31 01:19:57,194 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2023-08-31 01:19:57,195 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 696 transitions, 22475 flow [2023-08-31 01:19:57,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:19:57,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:19:57,195 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:19:57,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-08-31 01:19:57,195 INFO L420 AbstractCegarLoop]: === Iteration 61 === 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 01:19:57,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:19:57,195 INFO L85 PathProgramCache]: Analyzing trace with hash -708909313, now seen corresponding path program 23 times [2023-08-31 01:19:57,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:19:57,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345023337] [2023-08-31 01:19:57,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:19:57,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:19:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:19:57,470 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:19:57,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:19:57,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345023337] [2023-08-31 01:19:57,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345023337] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:19:57,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:19:57,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:19:57,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309607807] [2023-08-31 01:19:57,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:19:57,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:19:57,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:19:57,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:19:57,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:19:57,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-31 01:19:57,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 696 transitions, 22475 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:19:57,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:19:57,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-31 01:19:57,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:20:01,715 INFO L130 PetriNetUnfolder]: 6655/11965 cut-off events. [2023-08-31 01:20:01,715 INFO L131 PetriNetUnfolder]: For 411926/411926 co-relation queries the response was YES. [2023-08-31 01:20:01,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102435 conditions, 11965 events. 6655/11965 cut-off events. For 411926/411926 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 95036 event pairs, 1855 based on Foata normal form. 8/11973 useless extension candidates. Maximal degree in co-relation 102305. Up to 7604 conditions per place. [2023-08-31 01:20:01,845 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 438 selfloop transitions, 330 changer transitions 1/769 dead transitions. [2023-08-31 01:20:01,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 769 transitions, 24802 flow [2023-08-31 01:20:01,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:20:01,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:20:01,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2244 transitions. [2023-08-31 01:20:01,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41578654808226795 [2023-08-31 01:20:01,847 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2244 transitions. [2023-08-31 01:20:01,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2244 transitions. [2023-08-31 01:20:01,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:20:01,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2244 transitions. [2023-08-31 01:20:01,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.57142857142856) internal successors, (2244), 7 states have internal predecessors, (2244), 0 states have call successors, (0), 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 01:20:01,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:20:01,851 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:20:01,851 INFO L175 Difference]: Start difference. First operand has 342 places, 696 transitions, 22475 flow. Second operand 7 states and 2244 transitions. [2023-08-31 01:20:01,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 769 transitions, 24802 flow [2023-08-31 01:20:04,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 769 transitions, 24320 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-31 01:20:04,433 INFO L231 Difference]: Finished difference. Result has 346 places, 698 transitions, 22713 flow [2023-08-31 01:20:04,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=21953, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22713, PETRI_PLACES=346, PETRI_TRANSITIONS=698} [2023-08-31 01:20:04,433 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2023-08-31 01:20:04,433 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 698 transitions, 22713 flow [2023-08-31 01:20:04,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:20:04,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:20:04,434 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:20:04,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-08-31 01:20:04,434 INFO L420 AbstractCegarLoop]: === Iteration 62 === 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 01:20:04,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:20:04,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1494227853, now seen corresponding path program 24 times [2023-08-31 01:20:04,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:20:04,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488417744] [2023-08-31 01:20:04,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:20:04,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:20:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:20:04,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:20:04,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:20:04,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488417744] [2023-08-31 01:20:04,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488417744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:20:04,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:20:04,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:20:04,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324779275] [2023-08-31 01:20:04,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:20:04,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:20:04,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:20:04,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:20:04,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:20:04,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:20:04,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 698 transitions, 22713 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:20:04,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:20:04,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:20:04,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:20:08,758 INFO L130 PetriNetUnfolder]: 6649/11935 cut-off events. [2023-08-31 01:20:08,758 INFO L131 PetriNetUnfolder]: For 417781/417781 co-relation queries the response was YES. [2023-08-31 01:20:08,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102947 conditions, 11935 events. 6649/11935 cut-off events. For 417781/417781 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 94577 event pairs, 1839 based on Foata normal form. 4/11939 useless extension candidates. Maximal degree in co-relation 102815. Up to 7604 conditions per place. [2023-08-31 01:20:08,883 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 430 selfloop transitions, 330 changer transitions 0/760 dead transitions. [2023-08-31 01:20:08,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 760 transitions, 24882 flow [2023-08-31 01:20:08,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:20:08,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:20:08,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2252 transitions. [2023-08-31 01:20:08,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41726885306651845 [2023-08-31 01:20:08,885 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2252 transitions. [2023-08-31 01:20:08,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2252 transitions. [2023-08-31 01:20:08,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:20:08,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2252 transitions. [2023-08-31 01:20:08,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.7142857142857) internal successors, (2252), 7 states have internal predecessors, (2252), 0 states have call successors, (0), 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 01:20:08,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:20:08,889 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:20:08,889 INFO L175 Difference]: Start difference. First operand has 346 places, 698 transitions, 22713 flow. Second operand 7 states and 2252 transitions. [2023-08-31 01:20:08,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 760 transitions, 24882 flow [2023-08-31 01:20:11,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 760 transitions, 24271 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-31 01:20:11,701 INFO L231 Difference]: Finished difference. Result has 347 places, 697 transitions, 22730 flow [2023-08-31 01:20:11,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=22070, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22730, PETRI_PLACES=347, PETRI_TRANSITIONS=697} [2023-08-31 01:20:11,702 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 317 predicate places. [2023-08-31 01:20:11,702 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 697 transitions, 22730 flow [2023-08-31 01:20:11,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:20:11,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:20:11,702 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:20:11,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-08-31 01:20:11,702 INFO L420 AbstractCegarLoop]: === Iteration 63 === 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 01:20:11,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:20:11,703 INFO L85 PathProgramCache]: Analyzing trace with hash -790790675, now seen corresponding path program 25 times [2023-08-31 01:20:11,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:20:11,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093228092] [2023-08-31 01:20:11,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:20:11,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:20:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:20:11,966 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:20:11,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:20:11,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093228092] [2023-08-31 01:20:11,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093228092] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:20:11,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:20:11,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:20:11,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099624719] [2023-08-31 01:20:11,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:20:11,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:20:11,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:20:11,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:20:11,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:20:12,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:20:12,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 697 transitions, 22730 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:20:12,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:20:12,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:20:12,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:20:16,257 INFO L130 PetriNetUnfolder]: 6629/11891 cut-off events. [2023-08-31 01:20:16,257 INFO L131 PetriNetUnfolder]: For 417919/417919 co-relation queries the response was YES. [2023-08-31 01:20:16,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102778 conditions, 11891 events. 6629/11891 cut-off events. For 417919/417919 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 94062 event pairs, 1927 based on Foata normal form. 8/11899 useless extension candidates. Maximal degree in co-relation 102647. Up to 7604 conditions per place. [2023-08-31 01:20:16,378 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 441 selfloop transitions, 330 changer transitions 1/772 dead transitions. [2023-08-31 01:20:16,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 772 transitions, 24973 flow [2023-08-31 01:20:16,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:20:16,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:20:16,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2264 transitions. [2023-08-31 01:20:16,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4194923105428942 [2023-08-31 01:20:16,380 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2264 transitions. [2023-08-31 01:20:16,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2264 transitions. [2023-08-31 01:20:16,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:20:16,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2264 transitions. [2023-08-31 01:20:16,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.42857142857144) internal successors, (2264), 7 states have internal predecessors, (2264), 0 states have call successors, (0), 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 01:20:16,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:20:16,384 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:20:16,384 INFO L175 Difference]: Start difference. First operand has 347 places, 697 transitions, 22730 flow. Second operand 7 states and 2264 transitions. [2023-08-31 01:20:16,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 772 transitions, 24973 flow [2023-08-31 01:20:18,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 772 transitions, 24309 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-31 01:20:18,955 INFO L231 Difference]: Finished difference. Result has 350 places, 697 transitions, 22712 flow [2023-08-31 01:20:18,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=22023, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22712, PETRI_PLACES=350, PETRI_TRANSITIONS=697} [2023-08-31 01:20:18,956 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2023-08-31 01:20:18,956 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 697 transitions, 22712 flow [2023-08-31 01:20:18,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:20:18,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:20:18,957 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:20:18,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-08-31 01:20:18,957 INFO L420 AbstractCegarLoop]: === Iteration 64 === 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 01:20:18,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:20:18,958 INFO L85 PathProgramCache]: Analyzing trace with hash -2052057265, now seen corresponding path program 26 times [2023-08-31 01:20:18,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:20:18,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304111629] [2023-08-31 01:20:18,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:20:18,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:20:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:20:19,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:20:19,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:20:19,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304111629] [2023-08-31 01:20:19,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304111629] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:20:19,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:20:19,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:20:19,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451516093] [2023-08-31 01:20:19,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:20:19,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:20:19,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:20:19,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:20:19,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:20:19,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-31 01:20:19,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 697 transitions, 22712 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:20:19,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:20:19,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-31 01:20:19,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:20:24,145 INFO L130 PetriNetUnfolder]: 7334/13402 cut-off events. [2023-08-31 01:20:24,145 INFO L131 PetriNetUnfolder]: For 442791/442791 co-relation queries the response was YES. [2023-08-31 01:20:24,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112278 conditions, 13402 events. 7334/13402 cut-off events. For 442791/442791 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 111626 event pairs, 1079 based on Foata normal form. 10/13412 useless extension candidates. Maximal degree in co-relation 112145. Up to 5787 conditions per place. [2023-08-31 01:20:24,285 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 427 selfloop transitions, 473 changer transitions 1/901 dead transitions. [2023-08-31 01:20:24,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 901 transitions, 28292 flow [2023-08-31 01:20:24,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:20:24,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:20:24,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3190 transitions. [2023-08-31 01:20:24,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41374837872892345 [2023-08-31 01:20:24,287 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3190 transitions. [2023-08-31 01:20:24,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3190 transitions. [2023-08-31 01:20:24,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:20:24,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3190 transitions. [2023-08-31 01:20:24,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:20:24,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 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 01:20:24,293 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 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 01:20:24,293 INFO L175 Difference]: Start difference. First operand has 350 places, 697 transitions, 22712 flow. Second operand 10 states and 3190 transitions. [2023-08-31 01:20:24,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 901 transitions, 28292 flow [2023-08-31 01:20:27,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 901 transitions, 27577 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-31 01:20:27,416 INFO L231 Difference]: Finished difference. Result has 356 places, 771 transitions, 25341 flow [2023-08-31 01:20:27,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=22065, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=399, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25341, PETRI_PLACES=356, PETRI_TRANSITIONS=771} [2023-08-31 01:20:27,416 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2023-08-31 01:20:27,417 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 771 transitions, 25341 flow [2023-08-31 01:20:27,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:20:27,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:20:27,417 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:20:27,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-08-31 01:20:27,417 INFO L420 AbstractCegarLoop]: === Iteration 65 === 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 01:20:27,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:20:27,418 INFO L85 PathProgramCache]: Analyzing trace with hash -630506158, now seen corresponding path program 29 times [2023-08-31 01:20:27,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:20:27,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132802338] [2023-08-31 01:20:27,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:20:27,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:20:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:20:27,670 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:20:27,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:20:27,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132802338] [2023-08-31 01:20:27,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132802338] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:20:27,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024434301] [2023-08-31 01:20:27,671 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 01:20:27,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:20:27,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:20:27,672 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:20:27,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 01:20:27,829 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-31 01:20:27,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:20:27,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-31 01:20:27,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:20:28,025 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:20:28,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:20:28,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:20:28,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024434301] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:20:28,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:20:28,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 18 [2023-08-31 01:20:28,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266671898] [2023-08-31 01:20:28,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:20:28,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:20:28,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:20:28,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:20:28,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-08-31 01:20:28,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 771 [2023-08-31 01:20:28,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 771 transitions, 25341 flow. Second operand has 8 states, 8 states have (on average 303.75) internal successors, (2430), 8 states have internal predecessors, (2430), 0 states have call successors, (0), 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 01:20:28,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:20:28,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 771 [2023-08-31 01:20:28,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:20:33,615 INFO L130 PetriNetUnfolder]: 7376/13474 cut-off events. [2023-08-31 01:20:33,616 INFO L131 PetriNetUnfolder]: For 475315/475315 co-relation queries the response was YES. [2023-08-31 01:20:33,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117623 conditions, 13474 events. 7376/13474 cut-off events. For 475315/475315 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 111222 event pairs, 2077 based on Foata normal form. 6/13480 useless extension candidates. Maximal degree in co-relation 117489. Up to 5815 conditions per place. [2023-08-31 01:20:33,759 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 516 selfloop transitions, 334 changer transitions 14/864 dead transitions. [2023-08-31 01:20:33,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 864 transitions, 28302 flow [2023-08-31 01:20:33,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:20:33,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:20:33,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2507 transitions. [2023-08-31 01:20:33,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064526588845655 [2023-08-31 01:20:33,761 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2507 transitions. [2023-08-31 01:20:33,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2507 transitions. [2023-08-31 01:20:33,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:20:33,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2507 transitions. [2023-08-31 01:20:33,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 313.375) internal successors, (2507), 8 states have internal predecessors, (2507), 0 states have call successors, (0), 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 01:20:33,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 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 01:20:33,765 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 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 01:20:33,766 INFO L175 Difference]: Start difference. First operand has 356 places, 771 transitions, 25341 flow. Second operand 8 states and 2507 transitions. [2023-08-31 01:20:33,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 864 transitions, 28302 flow [2023-08-31 01:20:37,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 864 transitions, 27636 flow, removed 70 selfloop flow, removed 3 redundant places. [2023-08-31 01:20:37,853 INFO L231 Difference]: Finished difference. Result has 363 places, 776 transitions, 25619 flow [2023-08-31 01:20:37,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=24681, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=25619, PETRI_PLACES=363, PETRI_TRANSITIONS=776} [2023-08-31 01:20:37,854 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2023-08-31 01:20:37,854 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 776 transitions, 25619 flow [2023-08-31 01:20:37,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 303.75) internal successors, (2430), 8 states have internal predecessors, (2430), 0 states have call successors, (0), 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 01:20:37,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:20:37,855 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:20:37,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-31 01:20:38,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:20:38,060 INFO L420 AbstractCegarLoop]: === Iteration 66 === 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 01:20:38,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:20:38,060 INFO L85 PathProgramCache]: Analyzing trace with hash 246931528, now seen corresponding path program 30 times [2023-08-31 01:20:38,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:20:38,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849866102] [2023-08-31 01:20:38,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:20:38,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:20:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:20:38,292 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:20:38,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:20:38,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849866102] [2023-08-31 01:20:38,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849866102] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:20:38,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042418480] [2023-08-31 01:20:38,293 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 01:20:38,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:20:38,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:20:38,294 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:20:38,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 01:20:38,470 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-31 01:20:38,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:20:38,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-31 01:20:38,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:20:38,670 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:20:38,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:20:38,869 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:20:38,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042418480] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:20:38,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:20:38,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-31 01:20:38,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629311103] [2023-08-31 01:20:38,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:20:38,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-31 01:20:38,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:20:38,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-31 01:20:38,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-08-31 01:20:39,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 771 [2023-08-31 01:20:39,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 776 transitions, 25619 flow. Second operand has 17 states, 17 states have (on average 298.3529411764706) internal successors, (5072), 17 states have internal predecessors, (5072), 0 states have call successors, (0), 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 01:20:39,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:20:39,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 771 [2023-08-31 01:20:39,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:20:44,439 INFO L130 PetriNetUnfolder]: 7225/13181 cut-off events. [2023-08-31 01:20:44,439 INFO L131 PetriNetUnfolder]: For 460323/460323 co-relation queries the response was YES. [2023-08-31 01:20:44,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114472 conditions, 13181 events. 7225/13181 cut-off events. For 460323/460323 co-relation queries the response was YES. Maximal size of possible extension queue 885. Compared 108291 event pairs, 1877 based on Foata normal form. 20/13201 useless extension candidates. Maximal degree in co-relation 114335. Up to 4389 conditions per place. [2023-08-31 01:20:44,575 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 450 selfloop transitions, 396 changer transitions 0/846 dead transitions. [2023-08-31 01:20:44,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 846 transitions, 28058 flow [2023-08-31 01:20:44,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:20:44,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:20:44,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2159 transitions. [2023-08-31 01:20:44,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4000370576246063 [2023-08-31 01:20:44,577 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2159 transitions. [2023-08-31 01:20:44,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2159 transitions. [2023-08-31 01:20:44,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:20:44,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2159 transitions. [2023-08-31 01:20:44,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 308.42857142857144) internal successors, (2159), 7 states have internal predecessors, (2159), 0 states have call successors, (0), 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 01:20:44,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:20:44,581 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:20:44,581 INFO L175 Difference]: Start difference. First operand has 363 places, 776 transitions, 25619 flow. Second operand 7 states and 2159 transitions. [2023-08-31 01:20:44,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 846 transitions, 28058 flow [2023-08-31 01:20:48,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 846 transitions, 27672 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-08-31 01:20:48,139 INFO L231 Difference]: Finished difference. Result has 366 places, 773 transitions, 25989 flow [2023-08-31 01:20:48,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25074, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=394, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25989, PETRI_PLACES=366, PETRI_TRANSITIONS=773} [2023-08-31 01:20:48,140 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2023-08-31 01:20:48,140 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 773 transitions, 25989 flow [2023-08-31 01:20:48,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 298.3529411764706) internal successors, (5072), 17 states have internal predecessors, (5072), 0 states have call successors, (0), 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 01:20:48,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:20:48,141 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:20:48,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-31 01:20:48,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:20:48,341 INFO L420 AbstractCegarLoop]: === Iteration 67 === 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 01:20:48,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:20:48,342 INFO L85 PathProgramCache]: Analyzing trace with hash -2146257214, now seen corresponding path program 31 times [2023-08-31 01:20:48,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:20:48,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043141988] [2023-08-31 01:20:48,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:20:48,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:20:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:20:48,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:20:48,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:20:48,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043141988] [2023-08-31 01:20:48,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043141988] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:20:48,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:20:48,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:20:48,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778622635] [2023-08-31 01:20:48,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:20:48,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:20:48,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:20:48,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:20:48,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:20:48,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:20:48,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 773 transitions, 25989 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:20:48,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:20:48,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:20:48,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:20:53,634 INFO L130 PetriNetUnfolder]: 7209/13151 cut-off events. [2023-08-31 01:20:53,634 INFO L131 PetriNetUnfolder]: For 470322/470322 co-relation queries the response was YES. [2023-08-31 01:20:53,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114854 conditions, 13151 events. 7209/13151 cut-off events. For 470322/470322 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 107856 event pairs, 2065 based on Foata normal form. 6/13157 useless extension candidates. Maximal degree in co-relation 114717. Up to 5815 conditions per place. [2023-08-31 01:20:53,767 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 504 selfloop transitions, 329 changer transitions 6/839 dead transitions. [2023-08-31 01:20:53,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 839 transitions, 28358 flow [2023-08-31 01:20:53,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:20:53,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:20:53,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2260 transitions. [2023-08-31 01:20:53,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875115805076896 [2023-08-31 01:20:53,770 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2260 transitions. [2023-08-31 01:20:53,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2260 transitions. [2023-08-31 01:20:53,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:20:53,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2260 transitions. [2023-08-31 01:20:53,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.85714285714283) internal successors, (2260), 7 states have internal predecessors, (2260), 0 states have call successors, (0), 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 01:20:53,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:20:53,774 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:20:53,775 INFO L175 Difference]: Start difference. First operand has 366 places, 773 transitions, 25989 flow. Second operand 7 states and 2260 transitions. [2023-08-31 01:20:53,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 839 transitions, 28358 flow [2023-08-31 01:20:56,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 839 transitions, 27623 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-31 01:20:56,999 INFO L231 Difference]: Finished difference. Result has 369 places, 772 transitions, 25876 flow [2023-08-31 01:20:57,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25254, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25876, PETRI_PLACES=369, PETRI_TRANSITIONS=772} [2023-08-31 01:20:57,000 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 339 predicate places. [2023-08-31 01:20:57,000 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 772 transitions, 25876 flow [2023-08-31 01:20:57,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:20:57,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:20:57,000 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:20:57,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-08-31 01:20:57,001 INFO L420 AbstractCegarLoop]: === Iteration 68 === 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 01:20:57,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:20:57,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1309243911, now seen corresponding path program 27 times [2023-08-31 01:20:57,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:20:57,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571043677] [2023-08-31 01:20:57,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:20:57,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:20:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:20:57,260 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:20:57,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:20:57,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571043677] [2023-08-31 01:20:57,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571043677] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:20:57,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:20:57,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:20:57,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843574636] [2023-08-31 01:20:57,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:20:57,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:20:57,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:20:57,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:20:57,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:20:57,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 771 [2023-08-31 01:20:57,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 772 transitions, 25876 flow. Second operand has 8 states, 8 states have (on average 307.75) internal successors, (2462), 8 states have internal predecessors, (2462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:20:57,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:20:57,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 771 [2023-08-31 01:20:57,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:21:02,114 INFO L130 PetriNetUnfolder]: 7193/13097 cut-off events. [2023-08-31 01:21:02,114 INFO L131 PetriNetUnfolder]: For 466219/466219 co-relation queries the response was YES. [2023-08-31 01:21:02,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114176 conditions, 13097 events. 7193/13097 cut-off events. For 466219/466219 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 107250 event pairs, 2179 based on Foata normal form. 4/13101 useless extension candidates. Maximal degree in co-relation 114038. Up to 8557 conditions per place. [2023-08-31 01:21:02,256 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 464 selfloop transitions, 365 changer transitions 0/829 dead transitions. [2023-08-31 01:21:02,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 829 transitions, 27907 flow [2023-08-31 01:21:02,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:21:02,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:21:02,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2225 transitions. [2023-08-31 01:21:02,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41226607374467295 [2023-08-31 01:21:02,258 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2225 transitions. [2023-08-31 01:21:02,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2225 transitions. [2023-08-31 01:21:02,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:21:02,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2225 transitions. [2023-08-31 01:21:02,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 317.85714285714283) internal successors, (2225), 7 states have internal predecessors, (2225), 0 states have call successors, (0), 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 01:21:02,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:21:02,262 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:21:02,262 INFO L175 Difference]: Start difference. First operand has 369 places, 772 transitions, 25876 flow. Second operand 7 states and 2225 transitions. [2023-08-31 01:21:02,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 829 transitions, 27907 flow [2023-08-31 01:21:05,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 829 transitions, 27322 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-31 01:21:05,573 INFO L231 Difference]: Finished difference. Result has 367 places, 772 transitions, 25996 flow [2023-08-31 01:21:05,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25219, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=363, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25996, PETRI_PLACES=367, PETRI_TRANSITIONS=772} [2023-08-31 01:21:05,573 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 337 predicate places. [2023-08-31 01:21:05,574 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 772 transitions, 25996 flow [2023-08-31 01:21:05,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 307.75) internal successors, (2462), 8 states have internal predecessors, (2462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:21:05,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:21:05,574 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:21:05,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-08-31 01:21:05,574 INFO L420 AbstractCegarLoop]: === Iteration 69 === 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 01:21:05,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:21:05,575 INFO L85 PathProgramCache]: Analyzing trace with hash 772055314, now seen corresponding path program 32 times [2023-08-31 01:21:05,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:21:05,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020168519] [2023-08-31 01:21:05,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:21:05,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:21:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:21:05,801 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:21:05,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:21:05,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020168519] [2023-08-31 01:21:05,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020168519] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:21:05,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:21:05,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:21:05,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215942395] [2023-08-31 01:21:05,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:21:05,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:21:05,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:21:05,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:21:05,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:21:06,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-31 01:21:06,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 772 transitions, 25996 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:21:06,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:21:06,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-31 01:21:06,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:21:10,731 INFO L130 PetriNetUnfolder]: 7161/13037 cut-off events. [2023-08-31 01:21:10,732 INFO L131 PetriNetUnfolder]: For 472379/472379 co-relation queries the response was YES. [2023-08-31 01:21:10,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114256 conditions, 13037 events. 7161/13037 cut-off events. For 472379/472379 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 106485 event pairs, 2051 based on Foata normal form. 12/13049 useless extension candidates. Maximal degree in co-relation 114122. Up to 5768 conditions per place. [2023-08-31 01:21:10,861 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 505 selfloop transitions, 329 changer transitions 1/835 dead transitions. [2023-08-31 01:21:10,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 835 transitions, 28321 flow [2023-08-31 01:21:10,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:21:10,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:21:10,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2245 transitions. [2023-08-31 01:21:10,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41597183620529926 [2023-08-31 01:21:10,863 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2245 transitions. [2023-08-31 01:21:10,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2245 transitions. [2023-08-31 01:21:10,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:21:10,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2245 transitions. [2023-08-31 01:21:10,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.7142857142857) internal successors, (2245), 7 states have internal predecessors, (2245), 0 states have call successors, (0), 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 01:21:10,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:21:10,867 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:21:10,867 INFO L175 Difference]: Start difference. First operand has 367 places, 772 transitions, 25996 flow. Second operand 7 states and 2245 transitions. [2023-08-31 01:21:10,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 835 transitions, 28321 flow [2023-08-31 01:21:14,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 835 transitions, 27802 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 01:21:14,220 INFO L231 Difference]: Finished difference. Result has 372 places, 770 transitions, 26072 flow [2023-08-31 01:21:14,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25442, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26072, PETRI_PLACES=372, PETRI_TRANSITIONS=770} [2023-08-31 01:21:14,221 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 342 predicate places. [2023-08-31 01:21:14,221 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 770 transitions, 26072 flow [2023-08-31 01:21:14,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:21:14,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:21:14,221 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:21:14,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-08-31 01:21:14,221 INFO L420 AbstractCegarLoop]: === Iteration 70 === 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 01:21:14,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:21:14,222 INFO L85 PathProgramCache]: Analyzing trace with hash 129870617, now seen corresponding path program 28 times [2023-08-31 01:21:14,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:21:14,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755410379] [2023-08-31 01:21:14,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:21:14,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:21:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:21:14,445 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:21:14,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:21:14,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755410379] [2023-08-31 01:21:14,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755410379] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:21:14,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:21:14,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:21:14,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827153023] [2023-08-31 01:21:14,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:21:14,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:21:14,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:21:14,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:21:14,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:21:14,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:21:14,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 770 transitions, 26072 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:21:14,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:21:14,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:21:14,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:21:19,035 INFO L130 PetriNetUnfolder]: 7148/13006 cut-off events. [2023-08-31 01:21:19,035 INFO L131 PetriNetUnfolder]: For 476231/476231 co-relation queries the response was YES. [2023-08-31 01:21:19,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113886 conditions, 13006 events. 7148/13006 cut-off events. For 476231/476231 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 106206 event pairs, 2163 based on Foata normal form. 4/13010 useless extension candidates. Maximal degree in co-relation 113751. Up to 8497 conditions per place. [2023-08-31 01:21:19,311 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 457 selfloop transitions, 360 changer transitions 4/821 dead transitions. [2023-08-31 01:21:19,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 821 transitions, 28087 flow [2023-08-31 01:21:19,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:21:19,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:21:19,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2260 transitions. [2023-08-31 01:21:19,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875115805076896 [2023-08-31 01:21:19,313 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2260 transitions. [2023-08-31 01:21:19,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2260 transitions. [2023-08-31 01:21:19,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:21:19,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2260 transitions. [2023-08-31 01:21:19,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.85714285714283) internal successors, (2260), 7 states have internal predecessors, (2260), 0 states have call successors, (0), 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 01:21:19,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:21:19,317 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:21:19,318 INFO L175 Difference]: Start difference. First operand has 372 places, 770 transitions, 26072 flow. Second operand 7 states and 2260 transitions. [2023-08-31 01:21:19,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 821 transitions, 28087 flow [2023-08-31 01:21:22,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 821 transitions, 27694 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-31 01:21:22,753 INFO L231 Difference]: Finished difference. Result has 376 places, 769 transitions, 26368 flow [2023-08-31 01:21:22,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25679, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26368, PETRI_PLACES=376, PETRI_TRANSITIONS=769} [2023-08-31 01:21:22,753 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 346 predicate places. [2023-08-31 01:21:22,753 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 769 transitions, 26368 flow [2023-08-31 01:21:22,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:21:22,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:21:22,754 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:21:22,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-08-31 01:21:22,754 INFO L420 AbstractCegarLoop]: === Iteration 71 === 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 01:21:22,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:21:22,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1956490682, now seen corresponding path program 33 times [2023-08-31 01:21:22,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:21:22,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072306836] [2023-08-31 01:21:22,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:21:22,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:21:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:21:22,992 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:21:22,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:21:22,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072306836] [2023-08-31 01:21:22,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072306836] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:21:22,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:21:22,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:21:22,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740098390] [2023-08-31 01:21:22,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:21:22,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:21:22,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:21:22,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:21:22,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:21:23,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:21:23,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 769 transitions, 26368 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:21:23,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:21:23,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:21:23,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:21:27,504 INFO L130 PetriNetUnfolder]: 7135/12975 cut-off events. [2023-08-31 01:21:27,504 INFO L131 PetriNetUnfolder]: For 485554/485554 co-relation queries the response was YES. [2023-08-31 01:21:27,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114241 conditions, 12975 events. 7135/12975 cut-off events. For 485554/485554 co-relation queries the response was YES. Maximal size of possible extension queue 867. Compared 105636 event pairs, 2033 based on Foata normal form. 8/12983 useless extension candidates. Maximal degree in co-relation 114106. Up to 5746 conditions per place. [2023-08-31 01:21:27,645 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 498 selfloop transitions, 333 changer transitions 0/831 dead transitions. [2023-08-31 01:21:27,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 831 transitions, 28810 flow [2023-08-31 01:21:27,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:21:27,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:21:27,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2256 transitions. [2023-08-31 01:21:27,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4180100055586437 [2023-08-31 01:21:27,647 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2256 transitions. [2023-08-31 01:21:27,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2256 transitions. [2023-08-31 01:21:27,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:21:27,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2256 transitions. [2023-08-31 01:21:27,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.2857142857143) internal successors, (2256), 7 states have internal predecessors, (2256), 0 states have call successors, (0), 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 01:21:27,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:21:27,651 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:21:27,651 INFO L175 Difference]: Start difference. First operand has 376 places, 769 transitions, 26368 flow. Second operand 7 states and 2256 transitions. [2023-08-31 01:21:27,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 831 transitions, 28810 flow [2023-08-31 01:21:31,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 831 transitions, 28070 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-08-31 01:21:31,230 INFO L231 Difference]: Finished difference. Result has 372 places, 771 transitions, 26419 flow [2023-08-31 01:21:31,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25540, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26419, PETRI_PLACES=372, PETRI_TRANSITIONS=771} [2023-08-31 01:21:31,231 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 342 predicate places. [2023-08-31 01:21:31,231 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 771 transitions, 26419 flow [2023-08-31 01:21:31,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:21:31,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:21:31,232 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:21:31,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-08-31 01:21:31,232 INFO L420 AbstractCegarLoop]: === Iteration 72 === 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 01:21:31,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:21:31,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1288660147, now seen corresponding path program 29 times [2023-08-31 01:21:31,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:21:31,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946056254] [2023-08-31 01:21:31,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:21:31,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:21:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:21:31,473 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:21:31,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:21:31,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946056254] [2023-08-31 01:21:31,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946056254] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:21:31,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:21:31,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:21:31,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719884813] [2023-08-31 01:21:31,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:21:31,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:21:31,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:21:31,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:21:31,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:21:31,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:21:31,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 771 transitions, 26419 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:21:31,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:21:31,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:21:31,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:21:36,019 INFO L130 PetriNetUnfolder]: 7092/12888 cut-off events. [2023-08-31 01:21:36,019 INFO L131 PetriNetUnfolder]: For 482954/482954 co-relation queries the response was YES. [2023-08-31 01:21:36,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113246 conditions, 12888 events. 7092/12888 cut-off events. For 482954/482954 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 104889 event pairs, 2167 based on Foata normal form. 26/12914 useless extension candidates. Maximal degree in co-relation 113114. Up to 8471 conditions per place. [2023-08-31 01:21:36,160 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 455 selfloop transitions, 367 changer transitions 0/822 dead transitions. [2023-08-31 01:21:36,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 822 transitions, 28451 flow [2023-08-31 01:21:36,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:21:36,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:21:36,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2265 transitions. [2023-08-31 01:21:36,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4196775986659255 [2023-08-31 01:21:36,162 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2265 transitions. [2023-08-31 01:21:36,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2265 transitions. [2023-08-31 01:21:36,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:21:36,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2265 transitions. [2023-08-31 01:21:36,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.57142857142856) internal successors, (2265), 7 states have internal predecessors, (2265), 0 states have call successors, (0), 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 01:21:36,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:21:36,166 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:21:36,166 INFO L175 Difference]: Start difference. First operand has 372 places, 771 transitions, 26419 flow. Second operand 7 states and 2265 transitions. [2023-08-31 01:21:36,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 822 transitions, 28451 flow [2023-08-31 01:21:39,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 822 transitions, 27787 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-31 01:21:39,586 INFO L231 Difference]: Finished difference. Result has 374 places, 772 transitions, 26523 flow [2023-08-31 01:21:39,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25735, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=365, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26523, PETRI_PLACES=374, PETRI_TRANSITIONS=772} [2023-08-31 01:21:39,587 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 344 predicate places. [2023-08-31 01:21:39,587 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 772 transitions, 26523 flow [2023-08-31 01:21:39,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:21:39,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:21:39,588 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:21:39,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-08-31 01:21:39,588 INFO L420 AbstractCegarLoop]: === Iteration 73 === 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 01:21:39,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:21:39,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1855671599, now seen corresponding path program 30 times [2023-08-31 01:21:39,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:21:39,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611414016] [2023-08-31 01:21:39,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:21:39,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:21:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:21:39,804 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:21:39,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:21:39,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611414016] [2023-08-31 01:21:39,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611414016] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:21:39,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:21:39,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:21:39,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133627379] [2023-08-31 01:21:39,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:21:39,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:21:39,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:21:39,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:21:39,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:21:40,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-31 01:21:40,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 772 transitions, 26523 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:21:40,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:21:40,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-31 01:21:40,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:21:44,339 INFO L130 PetriNetUnfolder]: 7072/12844 cut-off events. [2023-08-31 01:21:44,339 INFO L131 PetriNetUnfolder]: For 481441/481441 co-relation queries the response was YES. [2023-08-31 01:21:44,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113249 conditions, 12844 events. 7072/12844 cut-off events. For 481441/481441 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 104359 event pairs, 2165 based on Foata normal form. 8/12852 useless extension candidates. Maximal degree in co-relation 113116. Up to 8471 conditions per place. [2023-08-31 01:21:44,480 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 460 selfloop transitions, 362 changer transitions 1/823 dead transitions. [2023-08-31 01:21:44,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 823 transitions, 28481 flow [2023-08-31 01:21:44,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:21:44,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:21:44,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2249 transitions. [2023-08-31 01:21:44,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4167129886974245 [2023-08-31 01:21:44,482 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2249 transitions. [2023-08-31 01:21:44,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2249 transitions. [2023-08-31 01:21:44,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:21:44,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2249 transitions. [2023-08-31 01:21:44,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.2857142857143) internal successors, (2249), 7 states have internal predecessors, (2249), 0 states have call successors, (0), 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 01:21:44,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:21:44,486 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:21:44,486 INFO L175 Difference]: Start difference. First operand has 374 places, 772 transitions, 26523 flow. Second operand 7 states and 2249 transitions. [2023-08-31 01:21:44,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 823 transitions, 28481 flow [2023-08-31 01:21:47,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 823 transitions, 27770 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-31 01:21:48,008 INFO L231 Difference]: Finished difference. Result has 377 places, 770 transitions, 26454 flow [2023-08-31 01:21:48,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25759, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26454, PETRI_PLACES=377, PETRI_TRANSITIONS=770} [2023-08-31 01:21:48,009 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2023-08-31 01:21:48,009 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 770 transitions, 26454 flow [2023-08-31 01:21:48,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:21:48,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:21:48,009 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:21:48,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-08-31 01:21:48,010 INFO L420 AbstractCegarLoop]: === Iteration 74 === 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 01:21:48,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:21:48,010 INFO L85 PathProgramCache]: Analyzing trace with hash 885212803, now seen corresponding path program 31 times [2023-08-31 01:21:48,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:21:48,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812864939] [2023-08-31 01:21:48,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:21:48,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:21:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:21:48,240 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:21:48,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:21:48,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812864939] [2023-08-31 01:21:48,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812864939] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:21:48,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:21:48,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:21:48,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427056806] [2023-08-31 01:21:48,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:21:48,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:21:48,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:21:48,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:21:48,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:21:48,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:21:48,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 770 transitions, 26454 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:21:48,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:21:48,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:21:48,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:21:53,006 INFO L130 PetriNetUnfolder]: 7057/12813 cut-off events. [2023-08-31 01:21:53,006 INFO L131 PetriNetUnfolder]: For 481095/481095 co-relation queries the response was YES. [2023-08-31 01:21:53,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112933 conditions, 12813 events. 7057/12813 cut-off events. For 481095/481095 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 104000 event pairs, 2155 based on Foata normal form. 10/12823 useless extension candidates. Maximal degree in co-relation 112799. Up to 8471 conditions per place. [2023-08-31 01:21:53,133 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 456 selfloop transitions, 365 changer transitions 0/821 dead transitions. [2023-08-31 01:21:53,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 821 transitions, 28471 flow [2023-08-31 01:21:53,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:21:53,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:21:53,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2262 transitions. [2023-08-31 01:21:53,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4191217342968316 [2023-08-31 01:21:53,135 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2262 transitions. [2023-08-31 01:21:53,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2262 transitions. [2023-08-31 01:21:53,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:21:53,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2262 transitions. [2023-08-31 01:21:53,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.14285714285717) internal successors, (2262), 7 states have internal predecessors, (2262), 0 states have call successors, (0), 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 01:21:53,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:21:53,139 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:21:53,139 INFO L175 Difference]: Start difference. First operand has 377 places, 770 transitions, 26454 flow. Second operand 7 states and 2262 transitions. [2023-08-31 01:21:53,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 821 transitions, 28471 flow [2023-08-31 01:21:56,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 821 transitions, 27766 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-31 01:21:56,473 INFO L231 Difference]: Finished difference. Result has 377 places, 772 transitions, 26518 flow [2023-08-31 01:21:56,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25714, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26518, PETRI_PLACES=377, PETRI_TRANSITIONS=772} [2023-08-31 01:21:56,474 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2023-08-31 01:21:56,474 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 772 transitions, 26518 flow [2023-08-31 01:21:56,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:21:56,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:21:56,474 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:21:56,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-08-31 01:21:56,474 INFO L420 AbstractCegarLoop]: === Iteration 75 === 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 01:21:56,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:21:56,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1581748409, now seen corresponding path program 32 times [2023-08-31 01:21:56,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:21:56,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654844636] [2023-08-31 01:21:56,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:21:56,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:21:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:21:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:21:56,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:21:56,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654844636] [2023-08-31 01:21:56,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654844636] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:21:56,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:21:56,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:21:56,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124141292] [2023-08-31 01:21:56,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:21:56,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:21:56,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:21:56,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:21:56,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:21:56,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:21:56,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 772 transitions, 26518 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:21:56,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:21:56,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:21:56,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:22:02,217 INFO L130 PetriNetUnfolder]: 8534/15680 cut-off events. [2023-08-31 01:22:02,217 INFO L131 PetriNetUnfolder]: For 578296/578296 co-relation queries the response was YES. [2023-08-31 01:22:02,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135815 conditions, 15680 events. 8534/15680 cut-off events. For 578296/578296 co-relation queries the response was YES. Maximal size of possible extension queue 1043. Compared 132955 event pairs, 1957 based on Foata normal form. 22/15702 useless extension candidates. Maximal degree in co-relation 135683. Up to 7742 conditions per place. [2023-08-31 01:22:02,369 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 727 selfloop transitions, 238 changer transitions 1/966 dead transitions. [2023-08-31 01:22:02,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 966 transitions, 32858 flow [2023-08-31 01:22:02,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:22:02,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:22:02,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2267 transitions. [2023-08-31 01:22:02,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42004817491198815 [2023-08-31 01:22:02,371 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2267 transitions. [2023-08-31 01:22:02,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2267 transitions. [2023-08-31 01:22:02,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:22:02,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2267 transitions. [2023-08-31 01:22:02,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.85714285714283) internal successors, (2267), 7 states have internal predecessors, (2267), 0 states have call successors, (0), 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 01:22:02,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:22:02,375 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:22:02,375 INFO L175 Difference]: Start difference. First operand has 377 places, 772 transitions, 26518 flow. Second operand 7 states and 2267 transitions. [2023-08-31 01:22:02,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 966 transitions, 32858 flow [2023-08-31 01:22:06,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 966 transitions, 32018 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-31 01:22:06,894 INFO L231 Difference]: Finished difference. Result has 382 places, 832 transitions, 28489 flow [2023-08-31 01:22:06,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25790, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28489, PETRI_PLACES=382, PETRI_TRANSITIONS=832} [2023-08-31 01:22:06,894 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 352 predicate places. [2023-08-31 01:22:06,894 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 832 transitions, 28489 flow [2023-08-31 01:22:06,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:22:06,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:22:06,895 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:22:06,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-08-31 01:22:06,895 INFO L420 AbstractCegarLoop]: === Iteration 76 === 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 01:22:06,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:22:06,895 INFO L85 PathProgramCache]: Analyzing trace with hash 612043710, now seen corresponding path program 34 times [2023-08-31 01:22:06,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:22:06,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991349902] [2023-08-31 01:22:06,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:22:06,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:22:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:22:07,109 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:22:07,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:22:07,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991349902] [2023-08-31 01:22:07,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991349902] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:22:07,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:22:07,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:22:07,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207027272] [2023-08-31 01:22:07,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:22:07,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:22:07,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:22:07,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:22:07,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:22:07,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:22:07,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 832 transitions, 28489 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:22:07,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:22:07,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:22:07,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:22:13,057 INFO L130 PetriNetUnfolder]: 8517/15645 cut-off events. [2023-08-31 01:22:13,057 INFO L131 PetriNetUnfolder]: For 584379/584379 co-relation queries the response was YES. [2023-08-31 01:22:13,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137168 conditions, 15645 events. 8517/15645 cut-off events. For 584379/584379 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 132610 event pairs, 3455 based on Foata normal form. 6/15651 useless extension candidates. Maximal degree in co-relation 137032. Up to 11873 conditions per place. [2023-08-31 01:22:13,221 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 671 selfloop transitions, 228 changer transitions 9/908 dead transitions. [2023-08-31 01:22:13,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 908 transitions, 30994 flow [2023-08-31 01:22:13,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:22:13,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:22:13,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2266 transitions. [2023-08-31 01:22:13,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41986288678895684 [2023-08-31 01:22:13,223 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2266 transitions. [2023-08-31 01:22:13,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2266 transitions. [2023-08-31 01:22:13,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:22:13,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2266 transitions. [2023-08-31 01:22:13,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.7142857142857) internal successors, (2266), 7 states have internal predecessors, (2266), 0 states have call successors, (0), 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 01:22:13,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:22:13,227 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:22:13,227 INFO L175 Difference]: Start difference. First operand has 382 places, 832 transitions, 28489 flow. Second operand 7 states and 2266 transitions. [2023-08-31 01:22:13,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 908 transitions, 30994 flow [2023-08-31 01:22:17,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 908 transitions, 30707 flow, removed 129 selfloop flow, removed 1 redundant places. [2023-08-31 01:22:17,757 INFO L231 Difference]: Finished difference. Result has 388 places, 835 transitions, 28711 flow [2023-08-31 01:22:17,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=28161, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28711, PETRI_PLACES=388, PETRI_TRANSITIONS=835} [2023-08-31 01:22:17,757 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2023-08-31 01:22:17,757 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 835 transitions, 28711 flow [2023-08-31 01:22:17,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:22:17,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:22:17,758 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:22:17,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-08-31 01:22:17,758 INFO L420 AbstractCegarLoop]: === Iteration 77 === 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 01:22:17,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:22:17,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1055451217, now seen corresponding path program 33 times [2023-08-31 01:22:17,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:22:17,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131010282] [2023-08-31 01:22:17,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:22:17,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:22:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:22:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:22:17,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:22:17,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131010282] [2023-08-31 01:22:17,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131010282] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:22:17,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:22:17,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:22:17,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189373974] [2023-08-31 01:22:17,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:22:17,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:22:17,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:22:17,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:22:17,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:22:18,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-31 01:22:18,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 835 transitions, 28711 flow. Second operand has 8 states, 8 states have (on average 311.75) internal successors, (2494), 8 states have internal predecessors, (2494), 0 states have call successors, (0), 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 01:22:18,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:22:18,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-31 01:22:18,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:22:24,495 INFO L130 PetriNetUnfolder]: 9298/17120 cut-off events. [2023-08-31 01:22:24,495 INFO L131 PetriNetUnfolder]: For 621787/621787 co-relation queries the response was YES. [2023-08-31 01:22:24,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149111 conditions, 17120 events. 9298/17120 cut-off events. For 621787/621787 co-relation queries the response was YES. Maximal size of possible extension queue 1108. Compared 147417 event pairs, 1918 based on Foata normal form. 16/17136 useless extension candidates. Maximal degree in co-relation 148974. Up to 7742 conditions per place. [2023-08-31 01:22:24,675 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 706 selfloop transitions, 262 changer transitions 0/968 dead transitions. [2023-08-31 01:22:24,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 968 transitions, 33248 flow [2023-08-31 01:22:24,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:22:24,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:22:24,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2245 transitions. [2023-08-31 01:22:24,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41597183620529926 [2023-08-31 01:22:24,677 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2245 transitions. [2023-08-31 01:22:24,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2245 transitions. [2023-08-31 01:22:24,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:22:24,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2245 transitions. [2023-08-31 01:22:24,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.7142857142857) internal successors, (2245), 7 states have internal predecessors, (2245), 0 states have call successors, (0), 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 01:22:24,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:22:24,681 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:22:24,681 INFO L175 Difference]: Start difference. First operand has 388 places, 835 transitions, 28711 flow. Second operand 7 states and 2245 transitions. [2023-08-31 01:22:24,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 968 transitions, 33248 flow [2023-08-31 01:22:30,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 968 transitions, 32879 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-08-31 01:22:30,058 INFO L231 Difference]: Finished difference. Result has 393 places, 859 transitions, 29888 flow [2023-08-31 01:22:30,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=28296, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=29888, PETRI_PLACES=393, PETRI_TRANSITIONS=859} [2023-08-31 01:22:30,058 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 363 predicate places. [2023-08-31 01:22:30,058 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 859 transitions, 29888 flow [2023-08-31 01:22:30,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 311.75) internal successors, (2494), 8 states have internal predecessors, (2494), 0 states have call successors, (0), 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 01:22:30,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:22:30,059 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:22:30,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-08-31 01:22:30,059 INFO L420 AbstractCegarLoop]: === Iteration 78 === 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 01:22:30,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:22:30,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1355786162, now seen corresponding path program 35 times [2023-08-31 01:22:30,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:22:30,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733682788] [2023-08-31 01:22:30,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:22:30,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:22:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:22:30,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:22:30,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:22:30,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733682788] [2023-08-31 01:22:30,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733682788] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:22:30,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128085363] [2023-08-31 01:22:30,296 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 01:22:30,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:22:30,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:22:30,297 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:22:30,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 01:22:30,473 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-31 01:22:30,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:22:30,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-31 01:22:30,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:22:30,649 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:22:30,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:22:30,846 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:22:30,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128085363] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:22:30,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:22:30,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2023-08-31 01:22:30,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766444152] [2023-08-31 01:22:30,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:22:30,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:22:30,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:22:30,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:22:30,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-08-31 01:22:31,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 771 [2023-08-31 01:22:31,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 859 transitions, 29888 flow. Second operand has 7 states, 7 states have (on average 311.14285714285717) internal successors, (2178), 7 states have internal predecessors, (2178), 0 states have call successors, (0), 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 01:22:31,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:22:31,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 771 [2023-08-31 01:22:31,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:22:37,714 INFO L130 PetriNetUnfolder]: 9310/17150 cut-off events. [2023-08-31 01:22:37,714 INFO L131 PetriNetUnfolder]: For 650631/650631 co-relation queries the response was YES. [2023-08-31 01:22:37,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151523 conditions, 17150 events. 9310/17150 cut-off events. For 650631/650631 co-relation queries the response was YES. Maximal size of possible extension queue 1111. Compared 147813 event pairs, 3934 based on Foata normal form. 8/17158 useless extension candidates. Maximal degree in co-relation 151383. Up to 13370 conditions per place. [2023-08-31 01:22:37,891 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 692 selfloop transitions, 238 changer transitions 0/930 dead transitions. [2023-08-31 01:22:37,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 930 transitions, 32545 flow [2023-08-31 01:22:37,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:22:37,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:22:37,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2248 transitions. [2023-08-31 01:22:37,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4165277005743932 [2023-08-31 01:22:37,893 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2248 transitions. [2023-08-31 01:22:37,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2248 transitions. [2023-08-31 01:22:37,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:22:37,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2248 transitions. [2023-08-31 01:22:37,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.14285714285717) internal successors, (2248), 7 states have internal predecessors, (2248), 0 states have call successors, (0), 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 01:22:37,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:22:37,897 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:22:37,897 INFO L175 Difference]: Start difference. First operand has 393 places, 859 transitions, 29888 flow. Second operand 7 states and 2248 transitions. [2023-08-31 01:22:37,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 930 transitions, 32545 flow [2023-08-31 01:22:42,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 930 transitions, 32274 flow, removed 32 selfloop flow, removed 2 redundant places. [2023-08-31 01:22:43,007 INFO L231 Difference]: Finished difference. Result has 399 places, 872 transitions, 30500 flow [2023-08-31 01:22:43,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=29619, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=859, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=30500, PETRI_PLACES=399, PETRI_TRANSITIONS=872} [2023-08-31 01:22:43,007 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2023-08-31 01:22:43,008 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 872 transitions, 30500 flow [2023-08-31 01:22:43,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 311.14285714285717) internal successors, (2178), 7 states have internal predecessors, (2178), 0 states have call successors, (0), 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 01:22:43,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:22:43,008 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:22:43,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-31 01:22:43,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2023-08-31 01:22:43,214 INFO L420 AbstractCegarLoop]: === Iteration 79 === 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 01:22:43,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:22:43,214 INFO L85 PathProgramCache]: Analyzing trace with hash 2100689833, now seen corresponding path program 34 times [2023-08-31 01:22:43,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:22:43,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492893179] [2023-08-31 01:22:43,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:22:43,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:22:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:22:43,429 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:22:43,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:22:43,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492893179] [2023-08-31 01:22:43,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492893179] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:22:43,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:22:43,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:22:43,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417150565] [2023-08-31 01:22:43,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:22:43,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:22:43,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:22:43,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:22:43,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:22:43,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 771 [2023-08-31 01:22:43,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 872 transitions, 30500 flow. Second operand has 7 states, 7 states have (on average 313.14285714285717) internal successors, (2192), 7 states have internal predecessors, (2192), 0 states have call successors, (0), 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 01:22:43,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:22:43,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 771 [2023-08-31 01:22:43,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:22:50,104 INFO L130 PetriNetUnfolder]: 9359/17219 cut-off events. [2023-08-31 01:22:50,105 INFO L131 PetriNetUnfolder]: For 649363/649363 co-relation queries the response was YES. [2023-08-31 01:22:50,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152449 conditions, 17219 events. 9359/17219 cut-off events. For 649363/649363 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 148189 event pairs, 2406 based on Foata normal form. 10/17229 useless extension candidates. Maximal degree in co-relation 152307. Up to 7845 conditions per place. [2023-08-31 01:22:50,294 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 675 selfloop transitions, 293 changer transitions 0/968 dead transitions. [2023-08-31 01:22:50,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 968 transitions, 34036 flow [2023-08-31 01:22:50,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:22:50,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:22:50,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2249 transitions. [2023-08-31 01:22:50,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4167129886974245 [2023-08-31 01:22:50,295 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2249 transitions. [2023-08-31 01:22:50,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2249 transitions. [2023-08-31 01:22:50,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:22:50,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2249 transitions. [2023-08-31 01:22:50,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.2857142857143) internal successors, (2249), 7 states have internal predecessors, (2249), 0 states have call successors, (0), 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 01:22:50,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:22:50,299 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:22:50,300 INFO L175 Difference]: Start difference. First operand has 399 places, 872 transitions, 30500 flow. Second operand 7 states and 2249 transitions. [2023-08-31 01:22:50,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 968 transitions, 34036 flow [2023-08-31 01:22:55,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 968 transitions, 33440 flow, removed 39 selfloop flow, removed 4 redundant places. [2023-08-31 01:22:55,660 INFO L231 Difference]: Finished difference. Result has 402 places, 889 transitions, 31149 flow [2023-08-31 01:22:55,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=29829, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=870, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31149, PETRI_PLACES=402, PETRI_TRANSITIONS=889} [2023-08-31 01:22:55,660 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 372 predicate places. [2023-08-31 01:22:55,660 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 889 transitions, 31149 flow [2023-08-31 01:22:55,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 313.14285714285717) internal successors, (2192), 7 states have internal predecessors, (2192), 0 states have call successors, (0), 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 01:22:55,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:22:55,661 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:22:55,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-08-31 01:22:55,661 INFO L420 AbstractCegarLoop]: === Iteration 80 === 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 01:22:55,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:22:55,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1249926018, now seen corresponding path program 36 times [2023-08-31 01:22:55,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:22:55,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171591896] [2023-08-31 01:22:55,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:22:55,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:22:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:22:55,880 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:22:55,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:22:55,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171591896] [2023-08-31 01:22:55,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171591896] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:22:55,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:22:55,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:22:55,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993282154] [2023-08-31 01:22:55,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:22:55,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:22:55,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:22:55,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:22:55,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:22:56,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-31 01:22:56,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 889 transitions, 31149 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:22:56,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:22:56,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-31 01:22:56,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:23:02,843 INFO L130 PetriNetUnfolder]: 9365/17233 cut-off events. [2023-08-31 01:23:02,844 INFO L131 PetriNetUnfolder]: For 664120/664120 co-relation queries the response was YES. [2023-08-31 01:23:02,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152788 conditions, 17233 events. 9365/17233 cut-off events. For 664120/664120 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 149184 event pairs, 1724 based on Foata normal form. 12/17245 useless extension candidates. Maximal degree in co-relation 152647. Up to 7166 conditions per place. [2023-08-31 01:23:03,032 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 709 selfloop transitions, 298 changer transitions 1/1008 dead transitions. [2023-08-31 01:23:03,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 1008 transitions, 34587 flow [2023-08-31 01:23:03,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:23:03,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:23:03,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3185 transitions. [2023-08-31 01:23:03,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41309987029831385 [2023-08-31 01:23:03,034 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3185 transitions. [2023-08-31 01:23:03,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3185 transitions. [2023-08-31 01:23:03,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:23:03,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3185 transitions. [2023-08-31 01:23:03,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 318.5) internal successors, (3185), 10 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:23:03,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 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 01:23:03,040 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 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 01:23:03,040 INFO L175 Difference]: Start difference. First operand has 402 places, 889 transitions, 31149 flow. Second operand 10 states and 3185 transitions. [2023-08-31 01:23:03,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 1008 transitions, 34587 flow [2023-08-31 01:23:08,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 1008 transitions, 33977 flow, removed 35 selfloop flow, removed 5 redundant places. [2023-08-31 01:23:08,921 INFO L231 Difference]: Finished difference. Result has 408 places, 898 transitions, 31364 flow [2023-08-31 01:23:08,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=30502, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=888, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=31364, PETRI_PLACES=408, PETRI_TRANSITIONS=898} [2023-08-31 01:23:08,922 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 378 predicate places. [2023-08-31 01:23:08,922 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 898 transitions, 31364 flow [2023-08-31 01:23:08,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:23:08,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:23:08,923 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:23:08,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-08-31 01:23:08,923 INFO L420 AbstractCegarLoop]: === Iteration 81 === 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 01:23:08,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:23:08,923 INFO L85 PathProgramCache]: Analyzing trace with hash 452672000, now seen corresponding path program 37 times [2023-08-31 01:23:08,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:23:08,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580757794] [2023-08-31 01:23:08,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:23:08,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:23:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:23:09,094 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:23:09,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:23:09,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580757794] [2023-08-31 01:23:09,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580757794] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:23:09,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:23:09,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:23:09,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463673381] [2023-08-31 01:23:09,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:23:09,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:23:09,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:23:09,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:23:09,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:23:09,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-31 01:23:09,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 898 transitions, 31364 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:23:09,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:23:09,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-31 01:23:09,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:23:16,025 INFO L130 PetriNetUnfolder]: 9348/17196 cut-off events. [2023-08-31 01:23:16,025 INFO L131 PetriNetUnfolder]: For 672418/672418 co-relation queries the response was YES. [2023-08-31 01:23:16,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154706 conditions, 17196 events. 9348/17196 cut-off events. For 672418/672418 co-relation queries the response was YES. Maximal size of possible extension queue 1115. Compared 148024 event pairs, 3899 based on Foata normal form. 6/17202 useless extension candidates. Maximal degree in co-relation 154564. Up to 13439 conditions per place. [2023-08-31 01:23:16,206 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 719 selfloop transitions, 238 changer transitions 9/966 dead transitions. [2023-08-31 01:23:16,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 966 transitions, 34001 flow [2023-08-31 01:23:16,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:23:16,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:23:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2241 transitions. [2023-08-31 01:23:16,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415230683713174 [2023-08-31 01:23:16,208 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2241 transitions. [2023-08-31 01:23:16,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2241 transitions. [2023-08-31 01:23:16,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:23:16,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2241 transitions. [2023-08-31 01:23:16,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.14285714285717) internal successors, (2241), 7 states have internal predecessors, (2241), 0 states have call successors, (0), 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 01:23:16,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:23:16,212 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:23:16,212 INFO L175 Difference]: Start difference. First operand has 408 places, 898 transitions, 31364 flow. Second operand 7 states and 2241 transitions. [2023-08-31 01:23:16,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 966 transitions, 34001 flow [2023-08-31 01:23:21,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 966 transitions, 33899 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-31 01:23:21,192 INFO L231 Difference]: Finished difference. Result has 414 places, 900 transitions, 31781 flow [2023-08-31 01:23:21,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31218, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31781, PETRI_PLACES=414, PETRI_TRANSITIONS=900} [2023-08-31 01:23:21,193 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 384 predicate places. [2023-08-31 01:23:21,193 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 900 transitions, 31781 flow [2023-08-31 01:23:21,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:23:21,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:23:21,193 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:23:21,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-08-31 01:23:21,193 INFO L420 AbstractCegarLoop]: === Iteration 82 === 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 01:23:21,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:23:21,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1535935923, now seen corresponding path program 35 times [2023-08-31 01:23:21,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:23:21,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223188934] [2023-08-31 01:23:21,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:23:21,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:23:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:23:21,402 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:23:21,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:23:21,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223188934] [2023-08-31 01:23:21,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223188934] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:23:21,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:23:21,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:23:21,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278887824] [2023-08-31 01:23:21,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:23:21,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:23:21,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:23:21,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:23:21,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:23:21,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 771 [2023-08-31 01:23:21,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 900 transitions, 31781 flow. Second operand has 7 states, 7 states have (on average 313.14285714285717) internal successors, (2192), 7 states have internal predecessors, (2192), 0 states have call successors, (0), 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 01:23:21,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:23:21,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 771 [2023-08-31 01:23:21,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:23:28,184 INFO L130 PetriNetUnfolder]: 9330/17152 cut-off events. [2023-08-31 01:23:28,184 INFO L131 PetriNetUnfolder]: For 667098/667098 co-relation queries the response was YES. [2023-08-31 01:23:28,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155330 conditions, 17152 events. 9330/17152 cut-off events. For 667098/667098 co-relation queries the response was YES. Maximal size of possible extension queue 1111. Compared 147324 event pairs, 2388 based on Foata normal form. 4/17156 useless extension candidates. Maximal degree in co-relation 155186. Up to 7804 conditions per place. [2023-08-31 01:23:28,363 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 678 selfloop transitions, 291 changer transitions 4/973 dead transitions. [2023-08-31 01:23:28,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 973 transitions, 34697 flow [2023-08-31 01:23:28,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:23:28,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:23:28,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2242 transitions. [2023-08-31 01:23:28,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4154159718362053 [2023-08-31 01:23:28,364 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2242 transitions. [2023-08-31 01:23:28,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2242 transitions. [2023-08-31 01:23:28,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:23:28,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2242 transitions. [2023-08-31 01:23:28,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.2857142857143) internal successors, (2242), 7 states have internal predecessors, (2242), 0 states have call successors, (0), 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 01:23:28,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:23:28,368 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:23:28,368 INFO L175 Difference]: Start difference. First operand has 414 places, 900 transitions, 31781 flow. Second operand 7 states and 2242 transitions. [2023-08-31 01:23:28,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 973 transitions, 34697 flow [2023-08-31 01:23:33,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 973 transitions, 34277 flow, removed 21 selfloop flow, removed 2 redundant places. [2023-08-31 01:23:33,804 INFO L231 Difference]: Finished difference. Result has 417 places, 898 transitions, 31874 flow [2023-08-31 01:23:33,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31333, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=899, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31874, PETRI_PLACES=417, PETRI_TRANSITIONS=898} [2023-08-31 01:23:33,805 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 387 predicate places. [2023-08-31 01:23:33,805 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 898 transitions, 31874 flow [2023-08-31 01:23:33,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 313.14285714285717) internal successors, (2192), 7 states have internal predecessors, (2192), 0 states have call successors, (0), 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 01:23:33,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:23:33,805 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:23:33,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2023-08-31 01:23:33,806 INFO L420 AbstractCegarLoop]: === Iteration 83 === 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 01:23:33,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:23:33,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1051359184, now seen corresponding path program 38 times [2023-08-31 01:23:33,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:23:33,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801500495] [2023-08-31 01:23:33,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:23:33,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:23:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:23:34,043 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:23:34,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:23:34,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801500495] [2023-08-31 01:23:34,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801500495] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:23:34,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:23:34,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:23:34,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599655729] [2023-08-31 01:23:34,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:23:34,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:23:34,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:23:34,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:23:34,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:23:34,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-31 01:23:34,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 898 transitions, 31874 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:23:34,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:23:34,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-31 01:23:34,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:23:40,930 INFO L130 PetriNetUnfolder]: 9295/17085 cut-off events. [2023-08-31 01:23:40,930 INFO L131 PetriNetUnfolder]: For 681570/681570 co-relation queries the response was YES. [2023-08-31 01:23:41,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155216 conditions, 17085 events. 9295/17085 cut-off events. For 681570/681570 co-relation queries the response was YES. Maximal size of possible extension queue 1104. Compared 146769 event pairs, 3959 based on Foata normal form. 12/17097 useless extension candidates. Maximal degree in co-relation 155072. Up to 13417 conditions per place. [2023-08-31 01:23:41,213 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 709 selfloop transitions, 245 changer transitions 1/955 dead transitions. [2023-08-31 01:23:41,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 955 transitions, 34300 flow [2023-08-31 01:23:41,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:23:41,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:23:41,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2244 transitions. [2023-08-31 01:23:41,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41578654808226795 [2023-08-31 01:23:41,215 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2244 transitions. [2023-08-31 01:23:41,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2244 transitions. [2023-08-31 01:23:41,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:23:41,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2244 transitions. [2023-08-31 01:23:41,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.57142857142856) internal successors, (2244), 7 states have internal predecessors, (2244), 0 states have call successors, (0), 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 01:23:41,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:23:41,219 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:23:41,219 INFO L175 Difference]: Start difference. First operand has 417 places, 898 transitions, 31874 flow. Second operand 7 states and 2244 transitions. [2023-08-31 01:23:41,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 955 transitions, 34300 flow [2023-08-31 01:23:46,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 955 transitions, 33810 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-31 01:23:46,275 INFO L231 Difference]: Finished difference. Result has 418 places, 900 transitions, 31925 flow [2023-08-31 01:23:46,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31343, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31925, PETRI_PLACES=418, PETRI_TRANSITIONS=900} [2023-08-31 01:23:46,275 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 388 predicate places. [2023-08-31 01:23:46,276 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 900 transitions, 31925 flow [2023-08-31 01:23:46,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 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 01:23:46,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:23:46,276 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:23:46,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2023-08-31 01:23:46,276 INFO L420 AbstractCegarLoop]: === Iteration 84 === 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 01:23:46,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:23:46,277 INFO L85 PathProgramCache]: Analyzing trace with hash 803032932, now seen corresponding path program 39 times [2023-08-31 01:23:46,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:23:46,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264410719] [2023-08-31 01:23:46,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:23:46,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:23:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:23:46,523 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:23:46,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:23:46,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264410719] [2023-08-31 01:23:46,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264410719] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:23:46,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:23:46,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:23:46,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727140115] [2023-08-31 01:23:46,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:23:46,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:23:46,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:23:46,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:23:46,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:23:46,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:23:46,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 900 transitions, 31925 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:23:46,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:23:46,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:23:46,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:23:53,124 INFO L130 PetriNetUnfolder]: 9286/17066 cut-off events. [2023-08-31 01:23:53,125 INFO L131 PetriNetUnfolder]: For 681619/681619 co-relation queries the response was YES. [2023-08-31 01:23:53,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155098 conditions, 17066 events. 9286/17066 cut-off events. For 681619/681619 co-relation queries the response was YES. Maximal size of possible extension queue 1102. Compared 146419 event pairs, 3941 based on Foata normal form. 4/17070 useless extension candidates. Maximal degree in co-relation 154952. Up to 13417 conditions per place. [2023-08-31 01:23:53,315 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 703 selfloop transitions, 246 changer transitions 0/949 dead transitions. [2023-08-31 01:23:53,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 949 transitions, 34223 flow [2023-08-31 01:23:53,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:23:53,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:23:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2256 transitions. [2023-08-31 01:23:53,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4180100055586437 [2023-08-31 01:23:53,317 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2256 transitions. [2023-08-31 01:23:53,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2256 transitions. [2023-08-31 01:23:53,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:23:53,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2256 transitions. [2023-08-31 01:23:53,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.2857142857143) internal successors, (2256), 7 states have internal predecessors, (2256), 0 states have call successors, (0), 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 01:23:53,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:23:53,321 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:23:53,321 INFO L175 Difference]: Start difference. First operand has 418 places, 900 transitions, 31925 flow. Second operand 7 states and 2256 transitions. [2023-08-31 01:23:53,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 949 transitions, 34223 flow [2023-08-31 01:23:58,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 949 transitions, 33543 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-31 01:23:58,377 INFO L231 Difference]: Finished difference. Result has 420 places, 899 transitions, 31738 flow [2023-08-31 01:23:58,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31197, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=898, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31738, PETRI_PLACES=420, PETRI_TRANSITIONS=899} [2023-08-31 01:23:58,378 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 390 predicate places. [2023-08-31 01:23:58,378 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 899 transitions, 31738 flow [2023-08-31 01:23:58,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:23:58,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:23:58,378 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:23:58,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2023-08-31 01:23:58,379 INFO L420 AbstractCegarLoop]: === Iteration 85 === 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 01:23:58,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:23:58,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1018710692, now seen corresponding path program 40 times [2023-08-31 01:23:58,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:23:58,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463011331] [2023-08-31 01:23:58,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:23:58,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:23:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:23:58,577 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:23:58,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:23:58,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463011331] [2023-08-31 01:23:58,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463011331] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:23:58,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:23:58,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:23:58,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592839731] [2023-08-31 01:23:58,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:23:58,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:23:58,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:23:58,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:23:58,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:23:58,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-31 01:23:58,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 899 transitions, 31738 flow. Second operand has 8 states, 8 states have (on average 311.75) internal successors, (2494), 8 states have internal predecessors, (2494), 0 states have call successors, (0), 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 01:23:58,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:23:58,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-31 01:23:58,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:24:05,426 INFO L130 PetriNetUnfolder]: 9262/17014 cut-off events. [2023-08-31 01:24:05,427 INFO L131 PetriNetUnfolder]: For 671050/671050 co-relation queries the response was YES. [2023-08-31 01:24:05,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154612 conditions, 17014 events. 9262/17014 cut-off events. For 671050/671050 co-relation queries the response was YES. Maximal size of possible extension queue 1098. Compared 146080 event pairs, 3865 based on Foata normal form. 4/17018 useless extension candidates. Maximal degree in co-relation 154466. Up to 13417 conditions per place. [2023-08-31 01:24:05,616 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 722 selfloop transitions, 238 changer transitions 0/960 dead transitions. [2023-08-31 01:24:05,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 960 transitions, 34139 flow [2023-08-31 01:24:05,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:24:05,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:24:05,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2248 transitions. [2023-08-31 01:24:05,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4165277005743932 [2023-08-31 01:24:05,618 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2248 transitions. [2023-08-31 01:24:05,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2248 transitions. [2023-08-31 01:24:05,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:24:05,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2248 transitions. [2023-08-31 01:24:05,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.14285714285717) internal successors, (2248), 7 states have internal predecessors, (2248), 0 states have call successors, (0), 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 01:24:05,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:24:05,622 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:24:05,622 INFO L175 Difference]: Start difference. First operand has 420 places, 899 transitions, 31738 flow. Second operand 7 states and 2248 transitions. [2023-08-31 01:24:05,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 960 transitions, 34139 flow [2023-08-31 01:24:10,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 960 transitions, 33687 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 01:24:10,669 INFO L231 Difference]: Finished difference. Result has 423 places, 897 transitions, 31702 flow [2023-08-31 01:24:10,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31226, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31702, PETRI_PLACES=423, PETRI_TRANSITIONS=897} [2023-08-31 01:24:10,671 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 393 predicate places. [2023-08-31 01:24:10,671 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 897 transitions, 31702 flow [2023-08-31 01:24:10,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 311.75) internal successors, (2494), 8 states have internal predecessors, (2494), 0 states have call successors, (0), 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 01:24:10,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:24:10,671 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:24:10,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2023-08-31 01:24:10,672 INFO L420 AbstractCegarLoop]: === Iteration 86 === 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 01:24:10,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:24:10,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1059464510, now seen corresponding path program 41 times [2023-08-31 01:24:10,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:24:10,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407784010] [2023-08-31 01:24:10,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:24:10,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:24:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:24:10,932 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:24:10,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:24:10,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407784010] [2023-08-31 01:24:10,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407784010] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:24:10,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:24:10,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:24:10,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593000673] [2023-08-31 01:24:10,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:24:10,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:24:10,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:24:10,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:24:10,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:24:11,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:24:11,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 897 transitions, 31702 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:24:11,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:24:11,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:24:11,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:24:17,669 INFO L130 PetriNetUnfolder]: 9246/16984 cut-off events. [2023-08-31 01:24:17,669 INFO L131 PetriNetUnfolder]: For 671428/671428 co-relation queries the response was YES. [2023-08-31 01:24:17,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154519 conditions, 16984 events. 9246/16984 cut-off events. For 671428/671428 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 145768 event pairs, 3863 based on Foata normal form. 6/16990 useless extension candidates. Maximal degree in co-relation 154373. Up to 13417 conditions per place. [2023-08-31 01:24:17,855 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 710 selfloop transitions, 236 changer transitions 6/952 dead transitions. [2023-08-31 01:24:17,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 952 transitions, 34067 flow [2023-08-31 01:24:17,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:24:17,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:24:17,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2254 transitions. [2023-08-31 01:24:17,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176394293125811 [2023-08-31 01:24:17,858 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2254 transitions. [2023-08-31 01:24:17,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2254 transitions. [2023-08-31 01:24:17,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:24:17,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2254 transitions. [2023-08-31 01:24:17,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 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 01:24:17,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:24:17,862 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:24:17,862 INFO L175 Difference]: Start difference. First operand has 423 places, 897 transitions, 31702 flow. Second operand 7 states and 2254 transitions. [2023-08-31 01:24:17,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 952 transitions, 34067 flow [2023-08-31 01:24:23,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 952 transitions, 33614 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-31 01:24:23,047 INFO L231 Difference]: Finished difference. Result has 426 places, 895 transitions, 31646 flow [2023-08-31 01:24:23,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31206, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=896, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31646, PETRI_PLACES=426, PETRI_TRANSITIONS=895} [2023-08-31 01:24:23,047 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 396 predicate places. [2023-08-31 01:24:23,047 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 895 transitions, 31646 flow [2023-08-31 01:24:23,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:24:23,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:24:23,048 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:24:23,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2023-08-31 01:24:23,048 INFO L420 AbstractCegarLoop]: === Iteration 87 === 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 01:24:23,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:24:23,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1803329933, now seen corresponding path program 36 times [2023-08-31 01:24:23,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:24:23,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518865775] [2023-08-31 01:24:23,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:24:23,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:24:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:24:23,240 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:24:23,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:24:23,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518865775] [2023-08-31 01:24:23,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518865775] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:24:23,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:24:23,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:24:23,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972767463] [2023-08-31 01:24:23,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:24:23,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:24:23,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:24:23,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:24:23,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:24:23,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-31 01:24:23,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 895 transitions, 31646 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:24:23,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:24:23,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-31 01:24:23,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:24:30,083 INFO L130 PetriNetUnfolder]: 9201/16809 cut-off events. [2023-08-31 01:24:30,083 INFO L131 PetriNetUnfolder]: For 664842/664842 co-relation queries the response was YES. [2023-08-31 01:24:30,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153418 conditions, 16809 events. 9201/16809 cut-off events. For 664842/664842 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 142781 event pairs, 2226 based on Foata normal form. 22/16831 useless extension candidates. Maximal degree in co-relation 153272. Up to 8427 conditions per place. [2023-08-31 01:24:30,266 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 713 selfloop transitions, 289 changer transitions 0/1002 dead transitions. [2023-08-31 01:24:30,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 1002 transitions, 35250 flow [2023-08-31 01:24:30,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:24:30,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:24:30,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2239 transitions. [2023-08-31 01:24:30,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148601074671114 [2023-08-31 01:24:30,268 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2239 transitions. [2023-08-31 01:24:30,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2239 transitions. [2023-08-31 01:24:30,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:24:30,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2239 transitions. [2023-08-31 01:24:30,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 319.85714285714283) internal successors, (2239), 7 states have internal predecessors, (2239), 0 states have call successors, (0), 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 01:24:30,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:24:30,272 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:24:30,272 INFO L175 Difference]: Start difference. First operand has 426 places, 895 transitions, 31646 flow. Second operand 7 states and 2239 transitions. [2023-08-31 01:24:30,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 1002 transitions, 35250 flow [2023-08-31 01:24:35,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 1002 transitions, 34762 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-31 01:24:35,400 INFO L231 Difference]: Finished difference. Result has 428 places, 900 transitions, 32194 flow [2023-08-31 01:24:35,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=30962, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=889, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=32194, PETRI_PLACES=428, PETRI_TRANSITIONS=900} [2023-08-31 01:24:35,400 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 398 predicate places. [2023-08-31 01:24:35,401 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 900 transitions, 32194 flow [2023-08-31 01:24:35,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:24:35,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:24:35,401 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:24:35,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2023-08-31 01:24:35,401 INFO L420 AbstractCegarLoop]: === Iteration 88 === 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 01:24:35,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:24:35,402 INFO L85 PathProgramCache]: Analyzing trace with hash -170138933, now seen corresponding path program 37 times [2023-08-31 01:24:35,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:24:35,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528907758] [2023-08-31 01:24:35,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:24:35,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:24:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:24:35,627 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:24:35,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:24:35,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528907758] [2023-08-31 01:24:35,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528907758] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:24:35,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:24:35,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:24:35,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825219224] [2023-08-31 01:24:35,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:24:35,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:24:35,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:24:35,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:24:35,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:24:35,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-31 01:24:35,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 900 transitions, 32194 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:24:35,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:24:35,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-31 01:24:35,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:24:42,662 INFO L130 PetriNetUnfolder]: 9418/17218 cut-off events. [2023-08-31 01:24:42,662 INFO L131 PetriNetUnfolder]: For 698901/698901 co-relation queries the response was YES. [2023-08-31 01:24:42,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158761 conditions, 17218 events. 9418/17218 cut-off events. For 698901/698901 co-relation queries the response was YES. Maximal size of possible extension queue 1107. Compared 147399 event pairs, 1828 based on Foata normal form. 12/17230 useless extension candidates. Maximal degree in co-relation 158613. Up to 6237 conditions per place. [2023-08-31 01:24:42,868 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 673 selfloop transitions, 383 changer transitions 0/1056 dead transitions. [2023-08-31 01:24:42,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 1056 transitions, 37704 flow [2023-08-31 01:24:42,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:24:42,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:24:42,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2239 transitions. [2023-08-31 01:24:42,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148601074671114 [2023-08-31 01:24:42,870 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2239 transitions. [2023-08-31 01:24:42,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2239 transitions. [2023-08-31 01:24:42,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:24:42,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2239 transitions. [2023-08-31 01:24:42,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 319.85714285714283) internal successors, (2239), 7 states have internal predecessors, (2239), 0 states have call successors, (0), 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 01:24:42,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:24:42,874 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:24:42,874 INFO L175 Difference]: Start difference. First operand has 428 places, 900 transitions, 32194 flow. Second operand 7 states and 2239 transitions. [2023-08-31 01:24:42,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 1056 transitions, 37704 flow [2023-08-31 01:24:48,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 1056 transitions, 36992 flow, removed 146 selfloop flow, removed 3 redundant places. [2023-08-31 01:24:48,419 INFO L231 Difference]: Finished difference. Result has 434 places, 928 transitions, 33793 flow [2023-08-31 01:24:48,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31626, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=899, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=354, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=33793, PETRI_PLACES=434, PETRI_TRANSITIONS=928} [2023-08-31 01:24:48,420 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 404 predicate places. [2023-08-31 01:24:48,420 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 928 transitions, 33793 flow [2023-08-31 01:24:48,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:24:48,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:24:48,420 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:24:48,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2023-08-31 01:24:48,421 INFO L420 AbstractCegarLoop]: === Iteration 89 === 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 01:24:48,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:24:48,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1784353919, now seen corresponding path program 38 times [2023-08-31 01:24:48,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:24:48,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606762857] [2023-08-31 01:24:48,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:24:48,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:24:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:24:48,645 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:24:48,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:24:48,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606762857] [2023-08-31 01:24:48,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606762857] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:24:48,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:24:48,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:24:48,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096340378] [2023-08-31 01:24:48,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:24:48,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:24:48,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:24:48,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:24:48,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:24:48,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:24:48,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 928 transitions, 33793 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:24:48,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:24:48,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:24:48,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:24:55,805 INFO L130 PetriNetUnfolder]: 9326/16990 cut-off events. [2023-08-31 01:24:55,805 INFO L131 PetriNetUnfolder]: For 704711/704711 co-relation queries the response was YES. [2023-08-31 01:24:55,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157640 conditions, 16990 events. 9326/16990 cut-off events. For 704711/704711 co-relation queries the response was YES. Maximal size of possible extension queue 1090. Compared 144047 event pairs, 2266 based on Foata normal form. 64/17054 useless extension candidates. Maximal degree in co-relation 157489. Up to 7778 conditions per place. [2023-08-31 01:24:55,992 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 724 selfloop transitions, 304 changer transitions 0/1028 dead transitions. [2023-08-31 01:24:55,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 1028 transitions, 37326 flow [2023-08-31 01:24:55,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:24:55,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:24:55,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2264 transitions. [2023-08-31 01:24:55,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4194923105428942 [2023-08-31 01:24:55,994 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2264 transitions. [2023-08-31 01:24:55,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2264 transitions. [2023-08-31 01:24:55,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:24:55,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2264 transitions. [2023-08-31 01:24:55,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.42857142857144) internal successors, (2264), 7 states have internal predecessors, (2264), 0 states have call successors, (0), 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 01:24:55,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:24:55,998 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:24:55,998 INFO L175 Difference]: Start difference. First operand has 434 places, 928 transitions, 33793 flow. Second operand 7 states and 2264 transitions. [2023-08-31 01:24:55,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 1028 transitions, 37326 flow [2023-08-31 01:25:01,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 1028 transitions, 36655 flow, removed 50 selfloop flow, removed 4 redundant places. [2023-08-31 01:25:01,698 INFO L231 Difference]: Finished difference. Result has 437 places, 928 transitions, 33795 flow [2023-08-31 01:25:01,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=32965, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=924, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=33795, PETRI_PLACES=437, PETRI_TRANSITIONS=928} [2023-08-31 01:25:01,698 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 407 predicate places. [2023-08-31 01:25:01,698 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 928 transitions, 33795 flow [2023-08-31 01:25:01,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:25:01,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:25:01,699 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:25:01,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2023-08-31 01:25:01,699 INFO L420 AbstractCegarLoop]: === Iteration 90 === 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 01:25:01,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:25:01,699 INFO L85 PathProgramCache]: Analyzing trace with hash 569817878, now seen corresponding path program 42 times [2023-08-31 01:25:01,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:25:01,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255504703] [2023-08-31 01:25:01,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:25:01,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:25:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:25:01,943 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:25:01,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:25:01,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255504703] [2023-08-31 01:25:01,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255504703] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:25:01,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:25:01,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:25:01,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611886394] [2023-08-31 01:25:01,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:25:01,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:25:01,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:25:01,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:25:01,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:25:02,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:25:02,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 928 transitions, 33795 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:25:02,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:25:02,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:25:02,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:25:08,989 INFO L130 PetriNetUnfolder]: 9702/17682 cut-off events. [2023-08-31 01:25:08,989 INFO L131 PetriNetUnfolder]: For 720005/720005 co-relation queries the response was YES. [2023-08-31 01:25:09,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162442 conditions, 17682 events. 9702/17682 cut-off events. For 720005/720005 co-relation queries the response was YES. Maximal size of possible extension queue 1143. Compared 151144 event pairs, 3934 based on Foata normal form. 8/17690 useless extension candidates. Maximal degree in co-relation 162292. Up to 13464 conditions per place. [2023-08-31 01:25:09,206 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 827 selfloop transitions, 226 changer transitions 0/1053 dead transitions. [2023-08-31 01:25:09,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 1053 transitions, 38439 flow [2023-08-31 01:25:09,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:25:09,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:25:09,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2261 transitions. [2023-08-31 01:25:09,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41893644617380027 [2023-08-31 01:25:09,208 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2261 transitions. [2023-08-31 01:25:09,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2261 transitions. [2023-08-31 01:25:09,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:25:09,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2261 transitions. [2023-08-31 01:25:09,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 0 states have call successors, (0), 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 01:25:09,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:25:09,212 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:25:09,212 INFO L175 Difference]: Start difference. First operand has 437 places, 928 transitions, 33795 flow. Second operand 7 states and 2261 transitions. [2023-08-31 01:25:09,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 1053 transitions, 38439 flow [2023-08-31 01:25:14,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 1053 transitions, 38032 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 01:25:14,981 INFO L231 Difference]: Finished difference. Result has 443 places, 948 transitions, 34688 flow [2023-08-31 01:25:14,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=33420, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=928, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=709, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34688, PETRI_PLACES=443, PETRI_TRANSITIONS=948} [2023-08-31 01:25:14,981 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 413 predicate places. [2023-08-31 01:25:14,981 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 948 transitions, 34688 flow [2023-08-31 01:25:14,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:25:14,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:25:14,982 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:25:14,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2023-08-31 01:25:14,982 INFO L420 AbstractCegarLoop]: === Iteration 91 === 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 01:25:14,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:25:14,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1553665876, now seen corresponding path program 43 times [2023-08-31 01:25:14,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:25:14,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022638134] [2023-08-31 01:25:14,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:25:14,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:25:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:25:15,207 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:25:15,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:25:15,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022638134] [2023-08-31 01:25:15,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022638134] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:25:15,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:25:15,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:25:15,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627964324] [2023-08-31 01:25:15,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:25:15,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:25:15,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:25:15,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:25:15,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:25:15,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-31 01:25:15,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 948 transitions, 34688 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:25:15,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:25:15,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-31 01:25:15,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:25:22,859 INFO L130 PetriNetUnfolder]: 9783/18047 cut-off events. [2023-08-31 01:25:22,859 INFO L131 PetriNetUnfolder]: For 737942/737942 co-relation queries the response was YES. [2023-08-31 01:25:22,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165134 conditions, 18047 events. 9783/18047 cut-off events. For 737942/737942 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 157648 event pairs, 3812 based on Foata normal form. 12/18059 useless extension candidates. Maximal degree in co-relation 164981. Up to 13464 conditions per place. [2023-08-31 01:25:23,072 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 777 selfloop transitions, 260 changer transitions 0/1037 dead transitions. [2023-08-31 01:25:23,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 1037 transitions, 38509 flow [2023-08-31 01:25:23,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:25:23,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:25:23,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2227 transitions. [2023-08-31 01:25:23,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41263664999073557 [2023-08-31 01:25:23,074 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2227 transitions. [2023-08-31 01:25:23,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2227 transitions. [2023-08-31 01:25:23,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:25:23,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2227 transitions. [2023-08-31 01:25:23,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 318.14285714285717) internal successors, (2227), 7 states have internal predecessors, (2227), 0 states have call successors, (0), 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 01:25:23,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:25:23,078 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:25:23,078 INFO L175 Difference]: Start difference. First operand has 443 places, 948 transitions, 34688 flow. Second operand 7 states and 2227 transitions. [2023-08-31 01:25:23,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 1037 transitions, 38509 flow [2023-08-31 01:25:29,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 1037 transitions, 37991 flow, removed 53 selfloop flow, removed 3 redundant places. [2023-08-31 01:25:29,504 INFO L231 Difference]: Finished difference. Result has 450 places, 969 transitions, 35638 flow [2023-08-31 01:25:29,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=34178, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=948, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=35638, PETRI_PLACES=450, PETRI_TRANSITIONS=969} [2023-08-31 01:25:29,505 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 420 predicate places. [2023-08-31 01:25:29,505 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 969 transitions, 35638 flow [2023-08-31 01:25:29,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:25:29,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:25:29,506 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:25:29,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2023-08-31 01:25:29,506 INFO L420 AbstractCegarLoop]: === Iteration 92 === 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 01:25:29,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:25:29,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1404244369, now seen corresponding path program 39 times [2023-08-31 01:25:29,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:25:29,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257610472] [2023-08-31 01:25:29,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:25:29,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:25:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:25:29,724 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:25:29,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:25:29,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257610472] [2023-08-31 01:25:29,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257610472] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:25:29,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:25:29,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:25:29,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478681881] [2023-08-31 01:25:29,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:25:29,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:25:29,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:25:29,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:25:29,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:25:29,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:25:29,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 969 transitions, 35638 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:25:29,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:25:29,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:25:29,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:25:37,165 INFO L130 PetriNetUnfolder]: 9691/17819 cut-off events. [2023-08-31 01:25:37,166 INFO L131 PetriNetUnfolder]: For 752530/752530 co-relation queries the response was YES. [2023-08-31 01:25:37,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165072 conditions, 17819 events. 9691/17819 cut-off events. For 752530/752530 co-relation queries the response was YES. Maximal size of possible extension queue 1172. Compared 154067 event pairs, 2360 based on Foata normal form. 64/17883 useless extension candidates. Maximal degree in co-relation 164915. Up to 8561 conditions per place. [2023-08-31 01:25:37,390 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 747 selfloop transitions, 315 changer transitions 0/1062 dead transitions. [2023-08-31 01:25:37,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 1062 transitions, 38896 flow [2023-08-31 01:25:37,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:25:37,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:25:37,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2265 transitions. [2023-08-31 01:25:37,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4196775986659255 [2023-08-31 01:25:37,391 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2265 transitions. [2023-08-31 01:25:37,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2265 transitions. [2023-08-31 01:25:37,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:25:37,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2265 transitions. [2023-08-31 01:25:37,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.57142857142856) internal successors, (2265), 7 states have internal predecessors, (2265), 0 states have call successors, (0), 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 01:25:37,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:25:37,396 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:25:37,396 INFO L175 Difference]: Start difference. First operand has 450 places, 969 transitions, 35638 flow. Second operand 7 states and 2265 transitions. [2023-08-31 01:25:37,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 1062 transitions, 38896 flow [2023-08-31 01:25:43,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 1062 transitions, 38437 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-31 01:25:43,999 INFO L231 Difference]: Finished difference. Result has 452 places, 967 transitions, 35732 flow [2023-08-31 01:25:44,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=35102, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=967, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=315, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=35732, PETRI_PLACES=452, PETRI_TRANSITIONS=967} [2023-08-31 01:25:44,000 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 422 predicate places. [2023-08-31 01:25:44,000 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 967 transitions, 35732 flow [2023-08-31 01:25:44,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:25:44,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:25:44,001 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:25:44,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2023-08-31 01:25:44,001 INFO L420 AbstractCegarLoop]: === Iteration 93 === 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 01:25:44,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:25:44,001 INFO L85 PathProgramCache]: Analyzing trace with hash 251251914, now seen corresponding path program 44 times [2023-08-31 01:25:44,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:25:44,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418037935] [2023-08-31 01:25:44,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:25:44,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:25:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:25:44,233 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:25:44,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:25:44,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418037935] [2023-08-31 01:25:44,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418037935] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:25:44,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:25:44,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:25:44,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513698868] [2023-08-31 01:25:44,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:25:44,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:25:44,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:25:44,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:25:44,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:25:44,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:25:44,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 967 transitions, 35732 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:25:44,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:25:44,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:25:44,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:25:51,823 INFO L130 PetriNetUnfolder]: 9680/17786 cut-off events. [2023-08-31 01:25:51,823 INFO L131 PetriNetUnfolder]: For 749678/749678 co-relation queries the response was YES. [2023-08-31 01:25:51,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165032 conditions, 17786 events. 9680/17786 cut-off events. For 749678/749678 co-relation queries the response was YES. Maximal size of possible extension queue 1169. Compared 153970 event pairs, 3970 based on Foata normal form. 8/17794 useless extension candidates. Maximal degree in co-relation 164875. Up to 13236 conditions per place. [2023-08-31 01:25:52,034 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 742 selfloop transitions, 271 changer transitions 0/1013 dead transitions. [2023-08-31 01:25:52,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 1013 transitions, 38078 flow [2023-08-31 01:25:52,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:25:52,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:25:52,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2254 transitions. [2023-08-31 01:25:52,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176394293125811 [2023-08-31 01:25:52,036 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2254 transitions. [2023-08-31 01:25:52,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2254 transitions. [2023-08-31 01:25:52,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:25:52,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2254 transitions. [2023-08-31 01:25:52,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 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 01:25:52,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:25:52,040 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:25:52,040 INFO L175 Difference]: Start difference. First operand has 452 places, 967 transitions, 35732 flow. Second operand 7 states and 2254 transitions. [2023-08-31 01:25:52,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 1013 transitions, 38078 flow [2023-08-31 01:25:58,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 1013 transitions, 37529 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-31 01:25:58,230 INFO L231 Difference]: Finished difference. Result has 452 places, 964 transitions, 35623 flow [2023-08-31 01:25:58,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=35081, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=964, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=35623, PETRI_PLACES=452, PETRI_TRANSITIONS=964} [2023-08-31 01:25:58,231 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 422 predicate places. [2023-08-31 01:25:58,231 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 964 transitions, 35623 flow [2023-08-31 01:25:58,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:25:58,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:25:58,231 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:25:58,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2023-08-31 01:25:58,231 INFO L420 AbstractCegarLoop]: === Iteration 94 === 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 01:25:58,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:25:58,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1180859485, now seen corresponding path program 40 times [2023-08-31 01:25:58,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:25:58,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155813606] [2023-08-31 01:25:58,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:25:58,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:25:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:25:58,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:25:58,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:25:58,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155813606] [2023-08-31 01:25:58,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155813606] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:25:58,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:25:58,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:25:58,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387332774] [2023-08-31 01:25:58,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:25:58,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:25:58,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:25:58,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:25:58,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:25:58,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:25:58,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 964 transitions, 35623 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:25:58,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:25:58,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:25:58,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:26:06,324 INFO L130 PetriNetUnfolder]: 10063/18572 cut-off events. [2023-08-31 01:26:06,324 INFO L131 PetriNetUnfolder]: For 762819/762819 co-relation queries the response was YES. [2023-08-31 01:26:06,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170815 conditions, 18572 events. 10063/18572 cut-off events. For 762819/762819 co-relation queries the response was YES. Maximal size of possible extension queue 1228. Compared 162637 event pairs, 2256 based on Foata normal form. 58/18630 useless extension candidates. Maximal degree in co-relation 170659. Up to 11871 conditions per place. [2023-08-31 01:26:06,547 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 758 selfloop transitions, 338 changer transitions 0/1096 dead transitions. [2023-08-31 01:26:06,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 1096 transitions, 40244 flow [2023-08-31 01:26:06,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:26:06,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:26:06,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2261 transitions. [2023-08-31 01:26:06,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41893644617380027 [2023-08-31 01:26:06,549 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2261 transitions. [2023-08-31 01:26:06,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2261 transitions. [2023-08-31 01:26:06,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:26:06,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2261 transitions. [2023-08-31 01:26:06,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 0 states have call successors, (0), 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 01:26:06,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:26:06,553 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:26:06,553 INFO L175 Difference]: Start difference. First operand has 452 places, 964 transitions, 35623 flow. Second operand 7 states and 2261 transitions. [2023-08-31 01:26:06,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 1096 transitions, 40244 flow [2023-08-31 01:26:13,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 1096 transitions, 39702 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-31 01:26:13,517 INFO L231 Difference]: Finished difference. Result has 456 places, 997 transitions, 37153 flow [2023-08-31 01:26:13,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=35081, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=964, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=37153, PETRI_PLACES=456, PETRI_TRANSITIONS=997} [2023-08-31 01:26:13,518 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 426 predicate places. [2023-08-31 01:26:13,518 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 997 transitions, 37153 flow [2023-08-31 01:26:13,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:26:13,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:26:13,518 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:26:13,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2023-08-31 01:26:13,519 INFO L420 AbstractCegarLoop]: === Iteration 95 === 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 01:26:13,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:26:13,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1004924419, now seen corresponding path program 41 times [2023-08-31 01:26:13,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:26:13,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223277436] [2023-08-31 01:26:13,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:26:13,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:26:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:26:13,755 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:26:13,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:26:13,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223277436] [2023-08-31 01:26:13,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223277436] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:26:13,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:26:13,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:26:13,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740055100] [2023-08-31 01:26:13,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:26:13,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:26:13,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:26:13,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:26:13,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:26:13,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-31 01:26:13,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 997 transitions, 37153 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:26:13,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:26:13,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-31 01:26:13,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:26:21,729 INFO L130 PetriNetUnfolder]: 10039/18524 cut-off events. [2023-08-31 01:26:21,729 INFO L131 PetriNetUnfolder]: For 786608/786608 co-relation queries the response was YES. [2023-08-31 01:26:21,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172214 conditions, 18524 events. 10039/18524 cut-off events. For 786608/786608 co-relation queries the response was YES. Maximal size of possible extension queue 1224. Compared 163177 event pairs, 1386 based on Foata normal form. 12/18536 useless extension candidates. Maximal degree in co-relation 172055. Up to 12189 conditions per place. [2023-08-31 01:26:22,001 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 886 selfloop transitions, 212 changer transitions 3/1101 dead transitions. [2023-08-31 01:26:22,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1101 transitions, 41341 flow [2023-08-31 01:26:22,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:26:22,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:26:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2225 transitions. [2023-08-31 01:26:22,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41226607374467295 [2023-08-31 01:26:22,004 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2225 transitions. [2023-08-31 01:26:22,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2225 transitions. [2023-08-31 01:26:22,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:26:22,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2225 transitions. [2023-08-31 01:26:22,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 317.85714285714283) internal successors, (2225), 7 states have internal predecessors, (2225), 0 states have call successors, (0), 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 01:26:22,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:26:22,009 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:26:22,010 INFO L175 Difference]: Start difference. First operand has 456 places, 997 transitions, 37153 flow. Second operand 7 states and 2225 transitions. [2023-08-31 01:26:22,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 1101 transitions, 41341 flow [2023-08-31 01:26:28,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 1101 transitions, 40896 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-08-31 01:26:28,964 INFO L231 Difference]: Finished difference. Result has 462 places, 1005 transitions, 37589 flow [2023-08-31 01:26:28,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=36713, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=997, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=787, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=37589, PETRI_PLACES=462, PETRI_TRANSITIONS=1005} [2023-08-31 01:26:28,965 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 432 predicate places. [2023-08-31 01:26:28,965 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 1005 transitions, 37589 flow [2023-08-31 01:26:28,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:26:28,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:26:28,965 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:26:28,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2023-08-31 01:26:28,965 INFO L420 AbstractCegarLoop]: === Iteration 96 === 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 01:26:28,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:26:28,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1818762133, now seen corresponding path program 42 times [2023-08-31 01:26:28,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:26:28,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536639870] [2023-08-31 01:26:28,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:26:28,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:26:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:26:29,163 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:26:29,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:26:29,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536639870] [2023-08-31 01:26:29,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536639870] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:26:29,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:26:29,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:26:29,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624618528] [2023-08-31 01:26:29,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:26:29,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:26:29,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:26:29,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:26:29,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:26:29,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-31 01:26:29,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1005 transitions, 37589 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:26:29,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:26:29,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-31 01:26:29,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:26:37,263 INFO L130 PetriNetUnfolder]: 10024/18463 cut-off events. [2023-08-31 01:26:37,263 INFO L131 PetriNetUnfolder]: For 801888/801888 co-relation queries the response was YES. [2023-08-31 01:26:37,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173433 conditions, 18463 events. 10024/18463 cut-off events. For 801888/801888 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 161210 event pairs, 2256 based on Foata normal form. 18/18481 useless extension candidates. Maximal degree in co-relation 173272. Up to 11823 conditions per place. [2023-08-31 01:26:37,593 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 767 selfloop transitions, 340 changer transitions 0/1107 dead transitions. [2023-08-31 01:26:37,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 1107 transitions, 41291 flow [2023-08-31 01:26:37,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:26:37,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:26:37,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2233 transitions. [2023-08-31 01:26:37,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41374837872892345 [2023-08-31 01:26:37,595 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2233 transitions. [2023-08-31 01:26:37,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2233 transitions. [2023-08-31 01:26:37,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:26:37,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2233 transitions. [2023-08-31 01:26:37,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 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 01:26:37,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:26:37,599 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:26:37,599 INFO L175 Difference]: Start difference. First operand has 462 places, 1005 transitions, 37589 flow. Second operand 7 states and 2233 transitions. [2023-08-31 01:26:37,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 1107 transitions, 41291 flow [2023-08-31 01:26:44,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 1107 transitions, 40785 flow, removed 78 selfloop flow, removed 2 redundant places. [2023-08-31 01:26:44,926 INFO L231 Difference]: Finished difference. Result has 468 places, 1010 transitions, 38027 flow [2023-08-31 01:26:44,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=37102, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1005, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=669, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38027, PETRI_PLACES=468, PETRI_TRANSITIONS=1010} [2023-08-31 01:26:44,927 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 438 predicate places. [2023-08-31 01:26:44,927 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 1010 transitions, 38027 flow [2023-08-31 01:26:44,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:26:44,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:26:44,927 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:26:44,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2023-08-31 01:26:44,928 INFO L420 AbstractCegarLoop]: === Iteration 97 === 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 01:26:44,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:26:44,928 INFO L85 PathProgramCache]: Analyzing trace with hash 650218813, now seen corresponding path program 43 times [2023-08-31 01:26:44,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:26:44,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194987804] [2023-08-31 01:26:44,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:26:44,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:26:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:26:45,133 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:26:45,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:26:45,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194987804] [2023-08-31 01:26:45,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194987804] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:26:45,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:26:45,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:26:45,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589022882] [2023-08-31 01:26:45,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:26:45,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:26:45,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:26:45,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:26:45,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:26:45,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-31 01:26:45,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 1010 transitions, 38027 flow. Second operand has 8 states, 8 states have (on average 309.75) internal successors, (2478), 8 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:26:45,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:26:45,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-31 01:26:45,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:26:53,044 INFO L130 PetriNetUnfolder]: 9982/18314 cut-off events. [2023-08-31 01:26:53,045 INFO L131 PetriNetUnfolder]: For 807848/807848 co-relation queries the response was YES. [2023-08-31 01:26:53,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173147 conditions, 18314 events. 9982/18314 cut-off events. For 807848/807848 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 158827 event pairs, 2238 based on Foata normal form. 18/18332 useless extension candidates. Maximal degree in co-relation 172984. Up to 11823 conditions per place. [2023-08-31 01:26:53,269 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 766 selfloop transitions, 337 changer transitions 0/1103 dead transitions. [2023-08-31 01:26:53,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 1103 transitions, 41393 flow [2023-08-31 01:26:53,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:26:53,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:26:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2230 transitions. [2023-08-31 01:26:53,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131925143598295 [2023-08-31 01:26:53,272 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2230 transitions. [2023-08-31 01:26:53,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2230 transitions. [2023-08-31 01:26:53,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:26:53,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2230 transitions. [2023-08-31 01:26:53,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 318.57142857142856) internal successors, (2230), 7 states have internal predecessors, (2230), 0 states have call successors, (0), 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 01:26:53,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:26:53,276 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:26:53,276 INFO L175 Difference]: Start difference. First operand has 468 places, 1010 transitions, 38027 flow. Second operand 7 states and 2230 transitions. [2023-08-31 01:26:53,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 1103 transitions, 41393 flow [2023-08-31 01:27:00,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 1103 transitions, 40709 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-08-31 01:27:00,945 INFO L231 Difference]: Finished difference. Result has 472 places, 1010 transitions, 38183 flow [2023-08-31 01:27:00,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=37315, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1009, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38183, PETRI_PLACES=472, PETRI_TRANSITIONS=1010} [2023-08-31 01:27:00,946 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 442 predicate places. [2023-08-31 01:27:00,946 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 1010 transitions, 38183 flow [2023-08-31 01:27:00,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 309.75) internal successors, (2478), 8 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:27:00,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:27:00,946 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:27:00,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2023-08-31 01:27:00,947 INFO L420 AbstractCegarLoop]: === Iteration 98 === 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 01:27:00,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:27:00,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1198212747, now seen corresponding path program 44 times [2023-08-31 01:27:00,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:27:00,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779108024] [2023-08-31 01:27:00,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:27:00,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:27:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:27:01,190 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:27:01,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:27:01,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779108024] [2023-08-31 01:27:01,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779108024] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:27:01,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:27:01,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:27:01,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609516486] [2023-08-31 01:27:01,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:27:01,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:27:01,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:27:01,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:27:01,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:27:01,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:27:01,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 1010 transitions, 38183 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:27:01,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:27:01,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:27:01,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:27:09,581 INFO L130 PetriNetUnfolder]: 9977/18289 cut-off events. [2023-08-31 01:27:09,582 INFO L131 PetriNetUnfolder]: For 812731/812731 co-relation queries the response was YES. [2023-08-31 01:27:09,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173569 conditions, 18289 events. 9977/18289 cut-off events. For 812731/812731 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 158466 event pairs, 2494 based on Foata normal form. 4/18293 useless extension candidates. Maximal degree in co-relation 173404. Up to 8750 conditions per place. [2023-08-31 01:27:09,809 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 722 selfloop transitions, 357 changer transitions 0/1079 dead transitions. [2023-08-31 01:27:09,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 1079 transitions, 41094 flow [2023-08-31 01:27:09,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:27:09,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:27:09,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2261 transitions. [2023-08-31 01:27:09,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41893644617380027 [2023-08-31 01:27:09,810 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2261 transitions. [2023-08-31 01:27:09,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2261 transitions. [2023-08-31 01:27:09,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:27:09,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2261 transitions. [2023-08-31 01:27:09,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 0 states have call successors, (0), 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 01:27:09,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:27:09,814 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:27:09,814 INFO L175 Difference]: Start difference. First operand has 472 places, 1010 transitions, 38183 flow. Second operand 7 states and 2261 transitions. [2023-08-31 01:27:09,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 1079 transitions, 41094 flow [2023-08-31 01:27:17,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 1079 transitions, 40599 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-31 01:27:17,697 INFO L231 Difference]: Finished difference. Result has 477 places, 1012 transitions, 38509 flow [2023-08-31 01:27:17,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=37667, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1009, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=354, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38509, PETRI_PLACES=477, PETRI_TRANSITIONS=1012} [2023-08-31 01:27:17,698 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 447 predicate places. [2023-08-31 01:27:17,698 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 1012 transitions, 38509 flow [2023-08-31 01:27:17,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:27:17,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:27:17,698 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:27:17,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2023-08-31 01:27:17,699 INFO L420 AbstractCegarLoop]: === Iteration 99 === 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 01:27:17,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:27:17,699 INFO L85 PathProgramCache]: Analyzing trace with hash -816504591, now seen corresponding path program 45 times [2023-08-31 01:27:17,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:27:17,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973381445] [2023-08-31 01:27:17,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:27:17,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:27:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:27:17,913 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:27:17,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:27:17,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973381445] [2023-08-31 01:27:17,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973381445] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:27:17,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:27:17,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:27:17,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206617833] [2023-08-31 01:27:17,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:27:17,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:27:17,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:27:17,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:27:17,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:27:18,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:27:18,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 1012 transitions, 38509 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:27:18,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:27:18,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:27:18,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:27:26,061 INFO L130 PetriNetUnfolder]: 10060/18384 cut-off events. [2023-08-31 01:27:26,061 INFO L131 PetriNetUnfolder]: For 846341/846341 co-relation queries the response was YES. [2023-08-31 01:27:26,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175417 conditions, 18384 events. 10060/18384 cut-off events. For 846341/846341 co-relation queries the response was YES. Maximal size of possible extension queue 1211. Compared 158664 event pairs, 2508 based on Foata normal form. 26/18410 useless extension candidates. Maximal degree in co-relation 175250. Up to 8770 conditions per place. [2023-08-31 01:27:26,285 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 732 selfloop transitions, 392 changer transitions 0/1124 dead transitions. [2023-08-31 01:27:26,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 1124 transitions, 43331 flow [2023-08-31 01:27:26,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:27:26,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:27:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2263 transitions. [2023-08-31 01:27:26,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4193070224198629 [2023-08-31 01:27:26,287 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2263 transitions. [2023-08-31 01:27:26,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2263 transitions. [2023-08-31 01:27:26,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:27:26,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2263 transitions. [2023-08-31 01:27:26,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.2857142857143) internal successors, (2263), 7 states have internal predecessors, (2263), 0 states have call successors, (0), 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 01:27:26,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:27:26,291 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:27:26,291 INFO L175 Difference]: Start difference. First operand has 477 places, 1012 transitions, 38509 flow. Second operand 7 states and 2263 transitions. [2023-08-31 01:27:26,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 1124 transitions, 43331 flow [2023-08-31 01:27:34,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 1124 transitions, 42761 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-08-31 01:27:34,253 INFO L231 Difference]: Finished difference. Result has 483 places, 1048 transitions, 40439 flow [2023-08-31 01:27:34,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=37932, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1011, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=40439, PETRI_PLACES=483, PETRI_TRANSITIONS=1048} [2023-08-31 01:27:34,254 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 453 predicate places. [2023-08-31 01:27:34,254 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 1048 transitions, 40439 flow [2023-08-31 01:27:34,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:27:34,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:27:34,255 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:27:34,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2023-08-31 01:27:34,255 INFO L420 AbstractCegarLoop]: === Iteration 100 === 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 01:27:34,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:27:34,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1876950500, now seen corresponding path program 45 times [2023-08-31 01:27:34,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:27:34,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381252932] [2023-08-31 01:27:34,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:27:34,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:27:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:27:34,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:27:34,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:27:34,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381252932] [2023-08-31 01:27:34,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381252932] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:27:34,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:27:34,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:27:34,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865523044] [2023-08-31 01:27:34,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:27:34,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:27:34,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:27:34,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:27:34,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:27:34,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:27:34,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 1048 transitions, 40439 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:27:34,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:27:34,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:27:34,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:27:43,129 INFO L130 PetriNetUnfolder]: 10016/18282 cut-off events. [2023-08-31 01:27:43,129 INFO L131 PetriNetUnfolder]: For 863424/863424 co-relation queries the response was YES. [2023-08-31 01:27:43,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176163 conditions, 18282 events. 10016/18282 cut-off events. For 863424/863424 co-relation queries the response was YES. Maximal size of possible extension queue 1197. Compared 157772 event pairs, 4057 based on Foata normal form. 16/18298 useless extension candidates. Maximal degree in co-relation 175993. Up to 13839 conditions per place. [2023-08-31 01:27:43,353 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 837 selfloop transitions, 269 changer transitions 0/1106 dead transitions. [2023-08-31 01:27:43,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 1106 transitions, 43118 flow [2023-08-31 01:27:43,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:27:43,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:27:43,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2269 transitions. [2023-08-31 01:27:43,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4204187511580508 [2023-08-31 01:27:43,355 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2269 transitions. [2023-08-31 01:27:43,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2269 transitions. [2023-08-31 01:27:43,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:27:43,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2269 transitions. [2023-08-31 01:27:43,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.14285714285717) internal successors, (2269), 7 states have internal predecessors, (2269), 0 states have call successors, (0), 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 01:27:43,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:27:43,359 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:27:43,359 INFO L175 Difference]: Start difference. First operand has 483 places, 1048 transitions, 40439 flow. Second operand 7 states and 2269 transitions. [2023-08-31 01:27:43,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 1106 transitions, 43118 flow [2023-08-31 01:27:51,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 1106 transitions, 42762 flow, removed 39 selfloop flow, removed 2 redundant places. [2023-08-31 01:27:51,076 INFO L231 Difference]: Finished difference. Result has 488 places, 1050 transitions, 40692 flow [2023-08-31 01:27:51,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=40083, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1048, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=781, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=40692, PETRI_PLACES=488, PETRI_TRANSITIONS=1050} [2023-08-31 01:27:51,077 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 458 predicate places. [2023-08-31 01:27:51,077 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 1050 transitions, 40692 flow [2023-08-31 01:27:51,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:27:51,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:27:51,078 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:27:51,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2023-08-31 01:27:51,078 INFO L420 AbstractCegarLoop]: === Iteration 101 === 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 01:27:51,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:27:51,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1666416104, now seen corresponding path program 46 times [2023-08-31 01:27:51,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:27:51,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065379802] [2023-08-31 01:27:51,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:27:51,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:27:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:27:51,297 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:27:51,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:27:51,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065379802] [2023-08-31 01:27:51,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065379802] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:27:51,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:27:51,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:27:51,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628229901] [2023-08-31 01:27:51,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:27:51,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:27:51,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:27:51,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:27:51,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:27:51,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:27:51,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 1050 transitions, 40692 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:27:51,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:27:51,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:27:51,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:27:59,792 INFO L130 PetriNetUnfolder]: 10031/18343 cut-off events. [2023-08-31 01:27:59,792 INFO L131 PetriNetUnfolder]: For 865036/865036 co-relation queries the response was YES. [2023-08-31 01:27:59,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176480 conditions, 18343 events. 10031/18343 cut-off events. For 865036/865036 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 158794 event pairs, 3997 based on Foata normal form. 4/18347 useless extension candidates. Maximal degree in co-relation 176309. Up to 13839 conditions per place. [2023-08-31 01:28:00,022 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 874 selfloop transitions, 238 changer transitions 0/1112 dead transitions. [2023-08-31 01:28:00,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 1112 transitions, 43649 flow [2023-08-31 01:28:00,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:28:00,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:28:00,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2257 transitions. [2023-08-31 01:28:00,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.418195293681675 [2023-08-31 01:28:00,024 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2257 transitions. [2023-08-31 01:28:00,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2257 transitions. [2023-08-31 01:28:00,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:28:00,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2257 transitions. [2023-08-31 01:28:00,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.42857142857144) internal successors, (2257), 7 states have internal predecessors, (2257), 0 states have call successors, (0), 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 01:28:00,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:28:00,028 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:28:00,028 INFO L175 Difference]: Start difference. First operand has 488 places, 1050 transitions, 40692 flow. Second operand 7 states and 2257 transitions. [2023-08-31 01:28:00,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 1112 transitions, 43649 flow [2023-08-31 01:28:07,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 1112 transitions, 43138 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 01:28:07,701 INFO L231 Difference]: Finished difference. Result has 493 places, 1055 transitions, 40918 flow [2023-08-31 01:28:07,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=40189, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1050, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=814, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=40918, PETRI_PLACES=493, PETRI_TRANSITIONS=1055} [2023-08-31 01:28:07,701 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 463 predicate places. [2023-08-31 01:28:07,701 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 1055 transitions, 40918 flow [2023-08-31 01:28:07,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:28:07,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:28:07,702 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:28:07,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2023-08-31 01:28:07,702 INFO L420 AbstractCegarLoop]: === Iteration 102 === 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 01:28:07,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:28:07,702 INFO L85 PathProgramCache]: Analyzing trace with hash -799839490, now seen corresponding path program 47 times [2023-08-31 01:28:07,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:28:07,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730279209] [2023-08-31 01:28:07,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:28:07,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:28:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:28:07,914 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:28:07,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:28:07,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730279209] [2023-08-31 01:28:07,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730279209] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:28:07,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:28:07,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:28:07,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178711572] [2023-08-31 01:28:07,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:28:07,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:28:07,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:28:07,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:28:07,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:28:08,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-31 01:28:08,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 1055 transitions, 40918 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:28:08,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:28:08,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-31 01:28:08,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:28:16,450 INFO L130 PetriNetUnfolder]: 10029/18331 cut-off events. [2023-08-31 01:28:16,451 INFO L131 PetriNetUnfolder]: For 871630/871630 co-relation queries the response was YES. [2023-08-31 01:28:16,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177602 conditions, 18331 events. 10029/18331 cut-off events. For 871630/871630 co-relation queries the response was YES. Maximal size of possible extension queue 1208. Compared 159365 event pairs, 1802 based on Foata normal form. 4/18335 useless extension candidates. Maximal degree in co-relation 177428. Up to 6972 conditions per place. [2023-08-31 01:28:16,679 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 842 selfloop transitions, 315 changer transitions 1/1158 dead transitions. [2023-08-31 01:28:16,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 1158 transitions, 44653 flow [2023-08-31 01:28:16,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:28:16,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:28:16,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2860 transitions. [2023-08-31 01:28:16,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121631358985445 [2023-08-31 01:28:16,681 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2860 transitions. [2023-08-31 01:28:16,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2860 transitions. [2023-08-31 01:28:16,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:28:16,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2860 transitions. [2023-08-31 01:28:16,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 317.77777777777777) internal successors, (2860), 9 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:28:16,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 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 01:28:16,686 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 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 01:28:16,686 INFO L175 Difference]: Start difference. First operand has 493 places, 1055 transitions, 40918 flow. Second operand 9 states and 2860 transitions. [2023-08-31 01:28:16,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 1158 transitions, 44653 flow [2023-08-31 01:28:25,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 1158 transitions, 44435 flow, removed 19 selfloop flow, removed 1 redundant places. [2023-08-31 01:28:25,971 INFO L231 Difference]: Finished difference. Result has 502 places, 1069 transitions, 41977 flow [2023-08-31 01:28:25,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=40708, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1055, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=749, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41977, PETRI_PLACES=502, PETRI_TRANSITIONS=1069} [2023-08-31 01:28:25,971 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 472 predicate places. [2023-08-31 01:28:25,971 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 1069 transitions, 41977 flow [2023-08-31 01:28:25,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:28:25,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:28:25,972 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:28:25,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2023-08-31 01:28:25,972 INFO L420 AbstractCegarLoop]: === Iteration 103 === 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 01:28:25,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:28:25,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1456307273, now seen corresponding path program 46 times [2023-08-31 01:28:25,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:28:25,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000673760] [2023-08-31 01:28:25,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:28:25,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:28:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:28:26,205 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:28:26,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:28:26,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000673760] [2023-08-31 01:28:26,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000673760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:28:26,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:28:26,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:28:26,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93905874] [2023-08-31 01:28:26,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:28:26,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:28:26,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:28:26,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:28:26,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:28:26,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-31 01:28:26,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 1069 transitions, 41977 flow. Second operand has 8 states, 8 states have (on average 311.75) internal successors, (2494), 8 states have internal predecessors, (2494), 0 states have call successors, (0), 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 01:28:26,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:28:26,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-31 01:28:26,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:28:34,625 INFO L130 PetriNetUnfolder]: 10013/18289 cut-off events. [2023-08-31 01:28:34,625 INFO L131 PetriNetUnfolder]: For 891965/891965 co-relation queries the response was YES. [2023-08-31 01:28:34,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180532 conditions, 18289 events. 10013/18289 cut-off events. For 891965/891965 co-relation queries the response was YES. Maximal size of possible extension queue 1204. Compared 157953 event pairs, 2500 based on Foata normal form. 10/18299 useless extension candidates. Maximal degree in co-relation 180356. Up to 8817 conditions per place. [2023-08-31 01:28:34,975 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 732 selfloop transitions, 408 changer transitions 0/1140 dead transitions. [2023-08-31 01:28:34,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 1140 transitions, 45212 flow [2023-08-31 01:28:34,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:28:34,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:28:34,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2247 transitions. [2023-08-31 01:28:34,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4163424124513619 [2023-08-31 01:28:34,977 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2247 transitions. [2023-08-31 01:28:34,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2247 transitions. [2023-08-31 01:28:34,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:28:34,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2247 transitions. [2023-08-31 01:28:34,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:28:34,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:28:34,981 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:28:34,981 INFO L175 Difference]: Start difference. First operand has 502 places, 1069 transitions, 41977 flow. Second operand 7 states and 2247 transitions. [2023-08-31 01:28:34,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 1140 transitions, 45212 flow [2023-08-31 01:28:43,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 1140 transitions, 44105 flow, removed 41 selfloop flow, removed 12 redundant places. [2023-08-31 01:28:43,915 INFO L231 Difference]: Finished difference. Result has 497 places, 1075 transitions, 42023 flow [2023-08-31 01:28:43,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=40790, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1066, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=399, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=42023, PETRI_PLACES=497, PETRI_TRANSITIONS=1075} [2023-08-31 01:28:43,915 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 467 predicate places. [2023-08-31 01:28:43,915 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 1075 transitions, 42023 flow [2023-08-31 01:28:43,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 311.75) internal successors, (2494), 8 states have internal predecessors, (2494), 0 states have call successors, (0), 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 01:28:43,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:28:43,916 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:28:43,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2023-08-31 01:28:43,916 INFO L420 AbstractCegarLoop]: === Iteration 104 === 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 01:28:43,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:28:43,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1523969853, now seen corresponding path program 47 times [2023-08-31 01:28:43,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:28:43,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338026740] [2023-08-31 01:28:43,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:28:43,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:28:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:28:44,149 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:28:44,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:28:44,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338026740] [2023-08-31 01:28:44,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338026740] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:28:44,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:28:44,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:28:44,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600088304] [2023-08-31 01:28:44,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:28:44,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:28:44,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:28:44,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:28:44,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:28:44,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 771 [2023-08-31 01:28:44,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 1075 transitions, 42023 flow. Second operand has 7 states, 7 states have (on average 313.14285714285717) internal successors, (2192), 7 states have internal predecessors, (2192), 0 states have call successors, (0), 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 01:28:44,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:28:44,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 771 [2023-08-31 01:28:44,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:28:52,678 INFO L130 PetriNetUnfolder]: 10031/18295 cut-off events. [2023-08-31 01:28:52,678 INFO L131 PetriNetUnfolder]: For 858050/858050 co-relation queries the response was YES. [2023-08-31 01:28:52,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178444 conditions, 18295 events. 10031/18295 cut-off events. For 858050/858050 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 157672 event pairs, 2488 based on Foata normal form. 6/18301 useless extension candidates. Maximal degree in co-relation 178273. Up to 8833 conditions per place. [2023-08-31 01:28:52,907 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 737 selfloop transitions, 412 changer transitions 0/1149 dead transitions. [2023-08-31 01:28:52,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 1149 transitions, 45618 flow [2023-08-31 01:28:52,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:28:52,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:28:52,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2250 transitions. [2023-08-31 01:28:52,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4168982768204558 [2023-08-31 01:28:52,909 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2250 transitions. [2023-08-31 01:28:52,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2250 transitions. [2023-08-31 01:28:52,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:28:52,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2250 transitions. [2023-08-31 01:28:52,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.42857142857144) internal successors, (2250), 7 states have internal predecessors, (2250), 0 states have call successors, (0), 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 01:28:52,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:28:52,913 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:28:52,913 INFO L175 Difference]: Start difference. First operand has 497 places, 1075 transitions, 42023 flow. Second operand 7 states and 2250 transitions. [2023-08-31 01:28:52,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 1149 transitions, 45618 flow [2023-08-31 01:29:01,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 1149 transitions, 44664 flow, removed 9 selfloop flow, removed 10 redundant places. [2023-08-31 01:29:01,236 INFO L231 Difference]: Finished difference. Result has 493 places, 1086 transitions, 42557 flow [2023-08-31 01:29:01,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=41018, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1072, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=398, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=668, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=42557, PETRI_PLACES=493, PETRI_TRANSITIONS=1086} [2023-08-31 01:29:01,236 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 463 predicate places. [2023-08-31 01:29:01,237 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 1086 transitions, 42557 flow [2023-08-31 01:29:01,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 313.14285714285717) internal successors, (2192), 7 states have internal predecessors, (2192), 0 states have call successors, (0), 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 01:29:01,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:29:01,237 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:29:01,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2023-08-31 01:29:01,237 INFO L420 AbstractCegarLoop]: === Iteration 105 === 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 01:29:01,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:29:01,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1855592650, now seen corresponding path program 48 times [2023-08-31 01:29:01,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:29:01,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493293652] [2023-08-31 01:29:01,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:29:01,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:29:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:29:01,471 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:29:01,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:29:01,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493293652] [2023-08-31 01:29:01,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493293652] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:29:01,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:29:01,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:29:01,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574118628] [2023-08-31 01:29:01,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:29:01,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:29:01,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:29:01,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:29:01,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:29:01,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-31 01:29:01,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 1086 transitions, 42557 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:29:01,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:29:01,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-31 01:29:01,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:29:09,965 INFO L130 PetriNetUnfolder]: 10007/18243 cut-off events. [2023-08-31 01:29:09,965 INFO L131 PetriNetUnfolder]: For 843078/843078 co-relation queries the response was YES. [2023-08-31 01:29:10,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177162 conditions, 18243 events. 10007/18243 cut-off events. For 843078/843078 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 157203 event pairs, 4038 based on Foata normal form. 4/18247 useless extension candidates. Maximal degree in co-relation 176995. Up to 13810 conditions per place. [2023-08-31 01:29:10,189 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 865 selfloop transitions, 273 changer transitions 0/1138 dead transitions. [2023-08-31 01:29:10,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 1138 transitions, 45167 flow [2023-08-31 01:29:10,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:29:10,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:29:10,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2265 transitions. [2023-08-31 01:29:10,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4196775986659255 [2023-08-31 01:29:10,191 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2265 transitions. [2023-08-31 01:29:10,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2265 transitions. [2023-08-31 01:29:10,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:29:10,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2265 transitions. [2023-08-31 01:29:10,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.57142857142856) internal successors, (2265), 7 states have internal predecessors, (2265), 0 states have call successors, (0), 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 01:29:10,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:29:10,195 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:29:10,196 INFO L175 Difference]: Start difference. First operand has 493 places, 1086 transitions, 42557 flow. Second operand 7 states and 2265 transitions. [2023-08-31 01:29:10,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 1138 transitions, 45167 flow [2023-08-31 01:29:17,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 1138 transitions, 44418 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-08-31 01:29:17,827 INFO L231 Difference]: Finished difference. Result has 493 places, 1085 transitions, 42313 flow [2023-08-31 01:29:17,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=41734, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1084, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=811, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=42313, PETRI_PLACES=493, PETRI_TRANSITIONS=1085} [2023-08-31 01:29:17,828 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 463 predicate places. [2023-08-31 01:29:17,828 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 1085 transitions, 42313 flow [2023-08-31 01:29:17,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 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 01:29:17,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:29:17,828 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:29:17,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2023-08-31 01:29:17,829 INFO L420 AbstractCegarLoop]: === Iteration 106 === 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 01:29:17,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:29:17,829 INFO L85 PathProgramCache]: Analyzing trace with hash -422916263, now seen corresponding path program 48 times [2023-08-31 01:29:17,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:29:17,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104533496] [2023-08-31 01:29:17,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:29:17,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:29:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:29:18,074 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:29:18,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:29:18,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104533496] [2023-08-31 01:29:18,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104533496] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:29:18,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:29:18,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:29:18,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861151430] [2023-08-31 01:29:18,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:29:18,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:29:18,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:29:18,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:29:18,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:29:18,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-31 01:29:18,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 1085 transitions, 42313 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:29:18,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:29:18,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-31 01:29:18,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:29:26,538 INFO L130 PetriNetUnfolder]: 9997/18221 cut-off events. [2023-08-31 01:29:26,538 INFO L131 PetriNetUnfolder]: For 834612/834612 co-relation queries the response was YES. [2023-08-31 01:29:26,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176949 conditions, 18221 events. 9997/18221 cut-off events. For 834612/834612 co-relation queries the response was YES. Maximal size of possible extension queue 1200. Compared 157717 event pairs, 1362 based on Foata normal form. 4/18225 useless extension candidates. Maximal degree in co-relation 176784. Up to 11902 conditions per place. [2023-08-31 01:29:26,773 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 924 selfloop transitions, 242 changer transitions 2/1168 dead transitions. [2023-08-31 01:29:26,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 1168 transitions, 46042 flow [2023-08-31 01:29:26,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:29:26,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:29:26,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2224 transitions. [2023-08-31 01:29:26,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41208078562164163 [2023-08-31 01:29:26,775 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2224 transitions. [2023-08-31 01:29:26,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2224 transitions. [2023-08-31 01:29:26,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:29:26,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2224 transitions. [2023-08-31 01:29:26,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 317.7142857142857) internal successors, (2224), 7 states have internal predecessors, (2224), 0 states have call successors, (0), 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 01:29:26,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:29:26,779 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:29:26,779 INFO L175 Difference]: Start difference. First operand has 493 places, 1085 transitions, 42313 flow. Second operand 7 states and 2224 transitions. [2023-08-31 01:29:26,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 1168 transitions, 46042 flow [2023-08-31 01:29:34,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 1168 transitions, 45543 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-31 01:29:34,654 INFO L231 Difference]: Finished difference. Result has 496 places, 1082 transitions, 42184 flow [2023-08-31 01:29:34,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=41742, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1083, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=841, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=42184, PETRI_PLACES=496, PETRI_TRANSITIONS=1082} [2023-08-31 01:29:34,655 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 466 predicate places. [2023-08-31 01:29:34,655 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 1082 transitions, 42184 flow [2023-08-31 01:29:34,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 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 01:29:34,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:29:34,655 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:29:34,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2023-08-31 01:29:34,655 INFO L420 AbstractCegarLoop]: === Iteration 107 === 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 01:29:34,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:29:34,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1141164956, now seen corresponding path program 49 times [2023-08-31 01:29:34,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:29:34,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72859189] [2023-08-31 01:29:34,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:29:34,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:29:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:29:34,945 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:29:34,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:29:34,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72859189] [2023-08-31 01:29:34,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72859189] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:29:34,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:29:34,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:29:34,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011525087] [2023-08-31 01:29:34,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:29:34,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:29:34,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:29:34,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:29:34,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:29:35,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 771 [2023-08-31 01:29:35,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 1082 transitions, 42184 flow. Second operand has 7 states, 7 states have (on average 313.14285714285717) internal successors, (2192), 7 states have internal predecessors, (2192), 0 states have call successors, (0), 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 01:29:35,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:29:35,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 771 [2023-08-31 01:29:35,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:29:43,222 INFO L130 PetriNetUnfolder]: 9978/18184 cut-off events. [2023-08-31 01:29:43,222 INFO L131 PetriNetUnfolder]: For 851743/851743 co-relation queries the response was YES. [2023-08-31 01:29:43,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177828 conditions, 18184 events. 9978/18184 cut-off events. For 851743/851743 co-relation queries the response was YES. Maximal size of possible extension queue 1197. Compared 156524 event pairs, 4048 based on Foata normal form. 6/18190 useless extension candidates. Maximal degree in co-relation 177663. Up to 13788 conditions per place. [2023-08-31 01:29:43,554 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 855 selfloop transitions, 269 changer transitions 6/1130 dead transitions. [2023-08-31 01:29:43,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 1130 transitions, 44754 flow [2023-08-31 01:29:43,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:29:43,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:29:43,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2253 transitions. [2023-08-31 01:29:43,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41745414118954977 [2023-08-31 01:29:43,556 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2253 transitions. [2023-08-31 01:29:43,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2253 transitions. [2023-08-31 01:29:43,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:29:43,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2253 transitions. [2023-08-31 01:29:43,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.85714285714283) internal successors, (2253), 7 states have internal predecessors, (2253), 0 states have call successors, (0), 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 01:29:43,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:29:43,561 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 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 01:29:43,561 INFO L175 Difference]: Start difference. First operand has 496 places, 1082 transitions, 42184 flow. Second operand 7 states and 2253 transitions. [2023-08-31 01:29:43,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 1130 transitions, 44754 flow Killed by 15