./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-match-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-match-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 016929a4a7ae1865ccc9d17762b9a3f4b350d2f1f075a0491feba933e4e45fac --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:58:40,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:58:40,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:58:40,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:58:40,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:58:40,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:58:40,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:58:40,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:58:40,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:58:40,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:58:40,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:58:40,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:58:40,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:58:40,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:58:40,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:58:40,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:58:40,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:58:40,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:58:40,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:58:40,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:58:40,343 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:58:40,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:58:40,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:58:40,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:58:40,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:58:40,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:58:40,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:58:40,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:58:40,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:58:40,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:58:40,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:58:40,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:58:40,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:58:40,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:58:40,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:58:40,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:58:40,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:58:40,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:58:40,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:58:40,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:58:40,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:58:40,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:58:40,370 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:58:40,402 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:58:40,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:58:40,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:58:40,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:58:40,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:58:40,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:58:40,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:58:40,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:58:40,405 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:58:40,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:58:40,406 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:58:40,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:58:40,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:58:40,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:58:40,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:58:40,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:58:40,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:58:40,408 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:58:40,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:58:40,408 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:58:40,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:58:40,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:58:40,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:58:40,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:58:40,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:58:40,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:58:40,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:58:40,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:58:40,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:58:40,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:58:40,410 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:58:40,410 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:58:40,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:58:40,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 016929a4a7ae1865ccc9d17762b9a3f4b350d2f1f075a0491feba933e4e45fac [2022-07-21 08:58:40,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:58:40,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:58:40,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:58:40,743 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:58:40,747 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:58:40,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-match-symm.wvr.c [2022-07-21 08:58:40,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/278003699/54500ee77ff04015b675437581885026/FLAGd12032abe [2022-07-21 08:58:41,320 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:58:41,320 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-symm.wvr.c [2022-07-21 08:58:41,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/278003699/54500ee77ff04015b675437581885026/FLAGd12032abe [2022-07-21 08:58:41,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/278003699/54500ee77ff04015b675437581885026 [2022-07-21 08:58:41,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:58:41,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:58:41,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:58:41,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:58:41,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:58:41,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:58:41" (1/1) ... [2022-07-21 08:58:41,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@657fa79a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:41, skipping insertion in model container [2022-07-21 08:58:41,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:58:41" (1/1) ... [2022-07-21 08:58:41,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:58:41,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:58:41,957 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-symm.wvr.c[2584,2597] [2022-07-21 08:58:41,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:58:41,969 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:58:42,007 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-symm.wvr.c[2584,2597] [2022-07-21 08:58:42,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:58:42,021 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:58:42,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:42 WrapperNode [2022-07-21 08:58:42,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:58:42,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:58:42,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:58:42,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:58:42,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:42" (1/1) ... [2022-07-21 08:58:42,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:42" (1/1) ... [2022-07-21 08:58:42,058 INFO L137 Inliner]: procedures = 22, calls = 27, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 180 [2022-07-21 08:58:42,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:58:42,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:58:42,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:58:42,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:58:42,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:42" (1/1) ... [2022-07-21 08:58:42,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:42" (1/1) ... [2022-07-21 08:58:42,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:42" (1/1) ... [2022-07-21 08:58:42,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:42" (1/1) ... [2022-07-21 08:58:42,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:42" (1/1) ... [2022-07-21 08:58:42,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:42" (1/1) ... [2022-07-21 08:58:42,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:42" (1/1) ... [2022-07-21 08:58:42,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:58:42,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:58:42,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:58:42,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:58:42,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:42" (1/1) ... [2022-07-21 08:58:42,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:58:42,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:58:42,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:58:42,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:58:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:58:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 08:58:42,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 08:58:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 08:58:42,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 08:58:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:58:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:58:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:58:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:58:42,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:58:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:58:42,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:58:42,170 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:58:42,242 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:58:42,244 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:58:42,537 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:58:42,548 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:58:42,549 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 08:58:42,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:58:42 BoogieIcfgContainer [2022-07-21 08:58:42,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:58:42,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:58:42,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:58:42,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:58:42,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:58:41" (1/3) ... [2022-07-21 08:58:42,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b0f6c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:58:42, skipping insertion in model container [2022-07-21 08:58:42,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:42" (2/3) ... [2022-07-21 08:58:42,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b0f6c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:58:42, skipping insertion in model container [2022-07-21 08:58:42,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:58:42" (3/3) ... [2022-07-21 08:58:42,559 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-match-symm.wvr.c [2022-07-21 08:58:42,564 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:58:42,572 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:58:42,573 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:58:42,573 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:58:42,679 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-21 08:58:42,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 240 places, 252 transitions, 520 flow [2022-07-21 08:58:42,873 INFO L129 PetriNetUnfolder]: 19/250 cut-off events. [2022-07-21 08:58:42,877 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:58:42,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 250 events. 19/250 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 275 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 169. Up to 2 conditions per place. [2022-07-21 08:58:42,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 240 places, 252 transitions, 520 flow [2022-07-21 08:58:42,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 241 transitions, 494 flow [2022-07-21 08:58:42,917 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:58:42,926 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2bdd2df5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4b02aa16 [2022-07-21 08:58:42,927 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-21 08:58:43,006 INFO L129 PetriNetUnfolder]: 19/240 cut-off events. [2022-07-21 08:58:43,006 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:58:43,006 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:43,007 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:43,008 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:43,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:43,014 INFO L85 PathProgramCache]: Analyzing trace with hash -511755063, now seen corresponding path program 1 times [2022-07-21 08:58:43,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:43,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417527251] [2022-07-21 08:58:43,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:43,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:43,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:43,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:43,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417527251] [2022-07-21 08:58:43,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417527251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:43,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:43,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:58:43,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480075268] [2022-07-21 08:58:43,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:43,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:58:43,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:43,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:58:43,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:58:43,530 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 252 [2022-07-21 08:58:43,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 241 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:43,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:43,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 252 [2022-07-21 08:58:43,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:43,719 INFO L129 PetriNetUnfolder]: 48/614 cut-off events. [2022-07-21 08:58:43,719 INFO L130 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2022-07-21 08:58:43,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 614 events. 48/614 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2804 event pairs, 15 based on Foata normal form. 44/596 useless extension candidates. Maximal degree in co-relation 531. Up to 49 conditions per place. [2022-07-21 08:58:43,728 INFO L132 encePairwiseOnDemand]: 235/252 looper letters, 21 selfloop transitions, 2 changer transitions 3/237 dead transitions. [2022-07-21 08:58:43,729 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 237 transitions, 541 flow [2022-07-21 08:58:43,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:58:43,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:58:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2022-07-21 08:58:43,749 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9537037037037037 [2022-07-21 08:58:43,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 721 transitions. [2022-07-21 08:58:43,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 721 transitions. [2022-07-21 08:58:43,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:43,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 721 transitions. [2022-07-21 08:58:43,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:43,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:43,781 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:43,783 INFO L186 Difference]: Start difference. First operand has 229 places, 241 transitions, 494 flow. Second operand 3 states and 721 transitions. [2022-07-21 08:58:43,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 237 transitions, 541 flow [2022-07-21 08:58:43,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 237 transitions, 527 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-21 08:58:43,799 INFO L242 Difference]: Finished difference. Result has 229 places, 229 transitions, 482 flow [2022-07-21 08:58:43,801 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=482, PETRI_PLACES=229, PETRI_TRANSITIONS=229} [2022-07-21 08:58:43,804 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 0 predicate places. [2022-07-21 08:58:43,805 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 229 transitions, 482 flow [2022-07-21 08:58:43,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:43,806 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:43,807 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:43,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:58:43,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:43,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:43,811 INFO L85 PathProgramCache]: Analyzing trace with hash 803898885, now seen corresponding path program 2 times [2022-07-21 08:58:43,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:43,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457038764] [2022-07-21 08:58:43,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:43,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:43,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:43,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:43,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457038764] [2022-07-21 08:58:43,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457038764] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:43,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:43,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:58:43,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554024698] [2022-07-21 08:58:43,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:43,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:58:43,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:43,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:58:44,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:58:44,002 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 252 [2022-07-21 08:58:44,003 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 229 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,003 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:44,004 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 252 [2022-07-21 08:58:44,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:44,171 INFO L129 PetriNetUnfolder]: 45/636 cut-off events. [2022-07-21 08:58:44,175 INFO L130 PetriNetUnfolder]: For 57/74 co-relation queries the response was YES. [2022-07-21 08:58:44,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 636 events. 45/636 cut-off events. For 57/74 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2802 event pairs, 14 based on Foata normal form. 6/602 useless extension candidates. Maximal degree in co-relation 579. Up to 51 conditions per place. [2022-07-21 08:58:44,179 INFO L132 encePairwiseOnDemand]: 246/252 looper letters, 23 selfloop transitions, 2 changer transitions 0/236 dead transitions. [2022-07-21 08:58:44,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 236 transitions, 557 flow [2022-07-21 08:58:44,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:58:44,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:58:44,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 699 transitions. [2022-07-21 08:58:44,182 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2022-07-21 08:58:44,183 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 699 transitions. [2022-07-21 08:58:44,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 699 transitions. [2022-07-21 08:58:44,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:44,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 699 transitions. [2022-07-21 08:58:44,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,187 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,187 INFO L186 Difference]: Start difference. First operand has 229 places, 229 transitions, 482 flow. Second operand 3 states and 699 transitions. [2022-07-21 08:58:44,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 236 transitions, 557 flow [2022-07-21 08:58:44,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 236 transitions, 555 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:58:44,199 INFO L242 Difference]: Finished difference. Result has 229 places, 231 transitions, 508 flow [2022-07-21 08:58:44,200 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=229, PETRI_TRANSITIONS=231} [2022-07-21 08:58:44,201 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 0 predicate places. [2022-07-21 08:58:44,201 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 231 transitions, 508 flow [2022-07-21 08:58:44,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,202 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:44,202 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:44,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:58:44,203 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:44,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:44,203 INFO L85 PathProgramCache]: Analyzing trace with hash -823811011, now seen corresponding path program 1 times [2022-07-21 08:58:44,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:44,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064607235] [2022-07-21 08:58:44,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:44,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:44,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:44,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:44,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064607235] [2022-07-21 08:58:44,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064607235] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:44,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:44,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:58:44,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881095081] [2022-07-21 08:58:44,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:44,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:58:44,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:44,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:58:44,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:58:44,402 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-21 08:58:44,404 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 231 transitions, 508 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,404 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:44,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-21 08:58:44,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:44,819 INFO L129 PetriNetUnfolder]: 137/955 cut-off events. [2022-07-21 08:58:44,819 INFO L130 PetriNetUnfolder]: For 47/55 co-relation queries the response was YES. [2022-07-21 08:58:44,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1381 conditions, 955 events. 137/955 cut-off events. For 47/55 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5273 event pairs, 73 based on Foata normal form. 1/886 useless extension candidates. Maximal degree in co-relation 996. Up to 229 conditions per place. [2022-07-21 08:58:44,826 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 61 selfloop transitions, 5 changer transitions 29/297 dead transitions. [2022-07-21 08:58:44,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 297 transitions, 841 flow [2022-07-21 08:58:44,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 08:58:44,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 08:58:44,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3840 transitions. [2022-07-21 08:58:44,835 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8465608465608465 [2022-07-21 08:58:44,835 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3840 transitions. [2022-07-21 08:58:44,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3840 transitions. [2022-07-21 08:58:44,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:44,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3840 transitions. [2022-07-21 08:58:44,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 213.33333333333334) internal successors, (3840), 18 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,869 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,869 INFO L186 Difference]: Start difference. First operand has 229 places, 231 transitions, 508 flow. Second operand 18 states and 3840 transitions. [2022-07-21 08:58:44,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 297 transitions, 841 flow [2022-07-21 08:58:44,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 297 transitions, 839 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:58:44,877 INFO L242 Difference]: Finished difference. Result has 261 places, 235 transitions, 577 flow [2022-07-21 08:58:44,878 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=577, PETRI_PLACES=261, PETRI_TRANSITIONS=235} [2022-07-21 08:58:44,880 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 32 predicate places. [2022-07-21 08:58:44,880 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 235 transitions, 577 flow [2022-07-21 08:58:44,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,882 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:44,882 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:44,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:58:44,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:44,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:44,884 INFO L85 PathProgramCache]: Analyzing trace with hash 106633647, now seen corresponding path program 2 times [2022-07-21 08:58:44,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:44,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555125469] [2022-07-21 08:58:44,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:44,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:45,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:45,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:45,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555125469] [2022-07-21 08:58:45,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555125469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:45,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:45,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:58:45,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560239087] [2022-07-21 08:58:45,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:45,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:58:45,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:45,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:58:45,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:58:45,114 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-21 08:58:45,116 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 235 transitions, 577 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:45,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:45,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-21 08:58:45,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:45,523 INFO L129 PetriNetUnfolder]: 141/1094 cut-off events. [2022-07-21 08:58:45,523 INFO L130 PetriNetUnfolder]: For 696/729 co-relation queries the response was YES. [2022-07-21 08:58:45,529 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2111 conditions, 1094 events. 141/1094 cut-off events. For 696/729 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6470 event pairs, 78 based on Foata normal form. 1/1021 useless extension candidates. Maximal degree in co-relation 2015. Up to 248 conditions per place. [2022-07-21 08:58:45,534 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 76 selfloop transitions, 3 changer transitions 25/306 dead transitions. [2022-07-21 08:58:45,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 306 transitions, 1135 flow [2022-07-21 08:58:45,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 08:58:45,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 08:58:45,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3625 transitions. [2022-07-21 08:58:45,543 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.846171802054155 [2022-07-21 08:58:45,543 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3625 transitions. [2022-07-21 08:58:45,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3625 transitions. [2022-07-21 08:58:45,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:45,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3625 transitions. [2022-07-21 08:58:45,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 213.23529411764707) internal successors, (3625), 17 states have internal predecessors, (3625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:45,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 252.0) internal successors, (4536), 18 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:45,578 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 252.0) internal successors, (4536), 18 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:45,579 INFO L186 Difference]: Start difference. First operand has 261 places, 235 transitions, 577 flow. Second operand 17 states and 3625 transitions. [2022-07-21 08:58:45,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 306 transitions, 1135 flow [2022-07-21 08:58:45,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 306 transitions, 1081 flow, removed 25 selfloop flow, removed 8 redundant places. [2022-07-21 08:58:45,593 INFO L242 Difference]: Finished difference. Result has 273 places, 237 transitions, 625 flow [2022-07-21 08:58:45,593 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=625, PETRI_PLACES=273, PETRI_TRANSITIONS=237} [2022-07-21 08:58:45,595 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 44 predicate places. [2022-07-21 08:58:45,595 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 237 transitions, 625 flow [2022-07-21 08:58:45,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:45,597 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:45,597 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:45,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:58:45,598 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:45,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:45,599 INFO L85 PathProgramCache]: Analyzing trace with hash -468348399, now seen corresponding path program 3 times [2022-07-21 08:58:45,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:45,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654451579] [2022-07-21 08:58:45,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:45,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:45,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:45,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:45,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654451579] [2022-07-21 08:58:45,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654451579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:45,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:45,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:58:45,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740289448] [2022-07-21 08:58:45,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:45,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:58:45,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:45,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:58:45,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:58:45,794 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-21 08:58:45,795 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 237 transitions, 625 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:45,796 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:45,796 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-21 08:58:45,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:46,253 INFO L129 PetriNetUnfolder]: 145/1099 cut-off events. [2022-07-21 08:58:46,254 INFO L130 PetriNetUnfolder]: For 1611/1642 co-relation queries the response was YES. [2022-07-21 08:58:46,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2418 conditions, 1099 events. 145/1099 cut-off events. For 1611/1642 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6513 event pairs, 84 based on Foata normal form. 1/1023 useless extension candidates. Maximal degree in co-relation 2314. Up to 287 conditions per place. [2022-07-21 08:58:46,264 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 46 selfloop transitions, 12 changer transitions 20/280 dead transitions. [2022-07-21 08:58:46,264 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 280 transitions, 1115 flow [2022-07-21 08:58:46,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:58:46,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 08:58:46,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3401 transitions. [2022-07-21 08:58:46,272 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8435019841269841 [2022-07-21 08:58:46,272 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3401 transitions. [2022-07-21 08:58:46,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3401 transitions. [2022-07-21 08:58:46,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:46,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3401 transitions. [2022-07-21 08:58:46,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 212.5625) internal successors, (3401), 16 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,289 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,290 INFO L186 Difference]: Start difference. First operand has 273 places, 237 transitions, 625 flow. Second operand 16 states and 3401 transitions. [2022-07-21 08:58:46,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 280 transitions, 1115 flow [2022-07-21 08:58:46,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 280 transitions, 1074 flow, removed 19 selfloop flow, removed 9 redundant places. [2022-07-21 08:58:46,304 INFO L242 Difference]: Finished difference. Result has 275 places, 247 transitions, 764 flow [2022-07-21 08:58:46,305 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=764, PETRI_PLACES=275, PETRI_TRANSITIONS=247} [2022-07-21 08:58:46,307 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 46 predicate places. [2022-07-21 08:58:46,307 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 247 transitions, 764 flow [2022-07-21 08:58:46,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,308 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:46,308 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:46,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:58:46,309 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:46,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:46,310 INFO L85 PathProgramCache]: Analyzing trace with hash -678703279, now seen corresponding path program 4 times [2022-07-21 08:58:46,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:46,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986004190] [2022-07-21 08:58:46,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:46,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:46,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:46,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:46,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986004190] [2022-07-21 08:58:46,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986004190] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:46,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:46,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:58:46,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039657343] [2022-07-21 08:58:46,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:46,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:58:46,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:46,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:58:46,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:58:46,506 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-21 08:58:46,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 247 transitions, 764 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:46,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-21 08:58:46,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:46,833 INFO L129 PetriNetUnfolder]: 151/1128 cut-off events. [2022-07-21 08:58:46,833 INFO L130 PetriNetUnfolder]: For 2074/2133 co-relation queries the response was YES. [2022-07-21 08:58:46,839 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2647 conditions, 1128 events. 151/1128 cut-off events. For 2074/2133 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6788 event pairs, 89 based on Foata normal form. 1/1056 useless extension candidates. Maximal degree in co-relation 2543. Up to 311 conditions per place. [2022-07-21 08:58:46,843 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 49 selfloop transitions, 19 changer transitions 20/290 dead transitions. [2022-07-21 08:58:46,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 290 transitions, 1311 flow [2022-07-21 08:58:46,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:58:46,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:58:46,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2983 transitions. [2022-07-21 08:58:46,851 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8455215419501134 [2022-07-21 08:58:46,851 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2983 transitions. [2022-07-21 08:58:46,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2983 transitions. [2022-07-21 08:58:46,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:46,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2983 transitions. [2022-07-21 08:58:46,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 213.07142857142858) internal successors, (2983), 14 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,884 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,884 INFO L186 Difference]: Start difference. First operand has 275 places, 247 transitions, 764 flow. Second operand 14 states and 2983 transitions. [2022-07-21 08:58:46,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 290 transitions, 1311 flow [2022-07-21 08:58:46,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 290 transitions, 1275 flow, removed 18 selfloop flow, removed 3 redundant places. [2022-07-21 08:58:46,919 INFO L242 Difference]: Finished difference. Result has 288 places, 257 transitions, 932 flow [2022-07-21 08:58:46,920 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=932, PETRI_PLACES=288, PETRI_TRANSITIONS=257} [2022-07-21 08:58:46,921 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 59 predicate places. [2022-07-21 08:58:46,921 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 257 transitions, 932 flow [2022-07-21 08:58:46,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,922 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:46,922 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:46,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:58:46,923 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:46,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:46,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1634795281, now seen corresponding path program 5 times [2022-07-21 08:58:46,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:46,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648661748] [2022-07-21 08:58:46,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:46,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:47,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:47,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:47,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648661748] [2022-07-21 08:58:47,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648661748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:47,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:47,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:58:47,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478446824] [2022-07-21 08:58:47,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:47,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:58:47,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:47,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:58:47,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:58:47,068 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-21 08:58:47,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 257 transitions, 932 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:47,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:47,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-21 08:58:47,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:47,461 INFO L129 PetriNetUnfolder]: 148/1127 cut-off events. [2022-07-21 08:58:47,462 INFO L130 PetriNetUnfolder]: For 2892/2949 co-relation queries the response was YES. [2022-07-21 08:58:47,468 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2870 conditions, 1127 events. 148/1127 cut-off events. For 2892/2949 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6844 event pairs, 82 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 2757. Up to 298 conditions per place. [2022-07-21 08:58:47,473 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 56 selfloop transitions, 16 changer transitions 24/298 dead transitions. [2022-07-21 08:58:47,473 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 298 transitions, 1570 flow [2022-07-21 08:58:47,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:58:47,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-21 08:58:47,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3192 transitions. [2022-07-21 08:58:47,480 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2022-07-21 08:58:47,480 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3192 transitions. [2022-07-21 08:58:47,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3192 transitions. [2022-07-21 08:58:47,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:47,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3192 transitions. [2022-07-21 08:58:47,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 212.8) internal successors, (3192), 15 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:47,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:47,493 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:47,494 INFO L186 Difference]: Start difference. First operand has 288 places, 257 transitions, 932 flow. Second operand 15 states and 3192 transitions. [2022-07-21 08:58:47,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 298 transitions, 1570 flow [2022-07-21 08:58:47,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 298 transitions, 1475 flow, removed 38 selfloop flow, removed 6 redundant places. [2022-07-21 08:58:47,517 INFO L242 Difference]: Finished difference. Result has 301 places, 262 transitions, 1016 flow [2022-07-21 08:58:47,518 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1016, PETRI_PLACES=301, PETRI_TRANSITIONS=262} [2022-07-21 08:58:47,518 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 72 predicate places. [2022-07-21 08:58:47,518 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 262 transitions, 1016 flow [2022-07-21 08:58:47,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:47,519 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:47,519 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:47,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:58:47,520 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:47,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:47,520 INFO L85 PathProgramCache]: Analyzing trace with hash -67705479, now seen corresponding path program 6 times [2022-07-21 08:58:47,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:47,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816515669] [2022-07-21 08:58:47,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:47,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:47,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:47,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:47,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816515669] [2022-07-21 08:58:47,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816515669] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:47,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:47,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:58:47,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921587757] [2022-07-21 08:58:47,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:47,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:58:47,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:47,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:58:47,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:58:47,677 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-21 08:58:47,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 262 transitions, 1016 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:47,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:47,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-21 08:58:47,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:48,005 INFO L129 PetriNetUnfolder]: 142/1116 cut-off events. [2022-07-21 08:58:48,006 INFO L130 PetriNetUnfolder]: For 3368/3439 co-relation queries the response was YES. [2022-07-21 08:58:48,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2860 conditions, 1116 events. 142/1116 cut-off events. For 3368/3439 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6771 event pairs, 84 based on Foata normal form. 7/1046 useless extension candidates. Maximal degree in co-relation 2741. Up to 292 conditions per place. [2022-07-21 08:58:48,017 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 51 selfloop transitions, 11 changer transitions 24/288 dead transitions. [2022-07-21 08:58:48,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 288 transitions, 1438 flow [2022-07-21 08:58:48,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:58:48,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:58:48,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2769 transitions. [2022-07-21 08:58:48,024 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8452380952380952 [2022-07-21 08:58:48,024 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2769 transitions. [2022-07-21 08:58:48,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2769 transitions. [2022-07-21 08:58:48,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:48,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2769 transitions. [2022-07-21 08:58:48,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 213.0) internal successors, (2769), 13 states have internal predecessors, (2769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:48,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 252.0) internal successors, (3528), 14 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:48,036 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 252.0) internal successors, (3528), 14 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:48,036 INFO L186 Difference]: Start difference. First operand has 301 places, 262 transitions, 1016 flow. Second operand 13 states and 2769 transitions. [2022-07-21 08:58:48,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 288 transitions, 1438 flow [2022-07-21 08:58:48,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 288 transitions, 1339 flow, removed 44 selfloop flow, removed 9 redundant places. [2022-07-21 08:58:48,059 INFO L242 Difference]: Finished difference. Result has 300 places, 254 transitions, 886 flow [2022-07-21 08:58:48,060 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=886, PETRI_PLACES=300, PETRI_TRANSITIONS=254} [2022-07-21 08:58:48,060 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 71 predicate places. [2022-07-21 08:58:48,061 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 254 transitions, 886 flow [2022-07-21 08:58:48,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:48,061 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:48,062 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:48,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:58:48,062 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:48,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:48,063 INFO L85 PathProgramCache]: Analyzing trace with hash 32274999, now seen corresponding path program 7 times [2022-07-21 08:58:48,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:48,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196388627] [2022-07-21 08:58:48,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:48,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:48,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:48,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196388627] [2022-07-21 08:58:48,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196388627] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:48,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:48,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:58:48,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870768014] [2022-07-21 08:58:48,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:48,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:58:48,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:48,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:58:48,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:58:48,178 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-21 08:58:48,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 254 transitions, 886 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:48,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:48,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-21 08:58:48,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:48,510 INFO L129 PetriNetUnfolder]: 140/1101 cut-off events. [2022-07-21 08:58:48,510 INFO L130 PetriNetUnfolder]: For 2817/2873 co-relation queries the response was YES. [2022-07-21 08:58:48,517 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2744 conditions, 1101 events. 140/1101 cut-off events. For 2817/2873 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6616 event pairs, 81 based on Foata normal form. 3/1029 useless extension candidates. Maximal degree in co-relation 2628. Up to 286 conditions per place. [2022-07-21 08:58:48,521 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 48 selfloop transitions, 14 changer transitions 23/287 dead transitions. [2022-07-21 08:58:48,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 287 transitions, 1399 flow [2022-07-21 08:58:48,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:58:48,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-21 08:58:48,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3191 transitions. [2022-07-21 08:58:48,526 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8441798941798941 [2022-07-21 08:58:48,526 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3191 transitions. [2022-07-21 08:58:48,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3191 transitions. [2022-07-21 08:58:48,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:48,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3191 transitions. [2022-07-21 08:58:48,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 212.73333333333332) internal successors, (3191), 15 states have internal predecessors, (3191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:48,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:48,538 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:48,538 INFO L186 Difference]: Start difference. First operand has 300 places, 254 transitions, 886 flow. Second operand 15 states and 3191 transitions. [2022-07-21 08:58:48,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 287 transitions, 1399 flow [2022-07-21 08:58:48,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 287 transitions, 1311 flow, removed 27 selfloop flow, removed 11 redundant places. [2022-07-21 08:58:48,556 INFO L242 Difference]: Finished difference. Result has 300 places, 258 transitions, 967 flow [2022-07-21 08:58:48,556 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=967, PETRI_PLACES=300, PETRI_TRANSITIONS=258} [2022-07-21 08:58:48,557 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 71 predicate places. [2022-07-21 08:58:48,557 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 258 transitions, 967 flow [2022-07-21 08:58:48,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:48,558 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:48,558 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:48,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:58:48,559 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:48,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:48,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1584975147, now seen corresponding path program 8 times [2022-07-21 08:58:48,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:48,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236036954] [2022-07-21 08:58:48,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:48,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:48,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:48,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:48,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236036954] [2022-07-21 08:58:48,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236036954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:48,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:48,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:58:48,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325928652] [2022-07-21 08:58:48,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:48,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:58:48,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:48,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:58:48,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:58:48,697 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-21 08:58:48,699 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 258 transitions, 967 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:48,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:48,699 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-21 08:58:48,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:49,037 INFO L129 PetriNetUnfolder]: 133/1068 cut-off events. [2022-07-21 08:58:49,037 INFO L130 PetriNetUnfolder]: For 2580/2637 co-relation queries the response was YES. [2022-07-21 08:58:49,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2618 conditions, 1068 events. 133/1068 cut-off events. For 2580/2637 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6270 event pairs, 81 based on Foata normal form. 3/996 useless extension candidates. Maximal degree in co-relation 2500. Up to 283 conditions per place. [2022-07-21 08:58:49,048 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 45 selfloop transitions, 4 changer transitions 26/277 dead transitions. [2022-07-21 08:58:49,048 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 277 transitions, 1266 flow [2022-07-21 08:58:49,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:58:49,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:58:49,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2975 transitions. [2022-07-21 08:58:49,053 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8432539682539683 [2022-07-21 08:58:49,053 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2975 transitions. [2022-07-21 08:58:49,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2975 transitions. [2022-07-21 08:58:49,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:49,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2975 transitions. [2022-07-21 08:58:49,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.5) internal successors, (2975), 14 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:49,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:49,064 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:49,064 INFO L186 Difference]: Start difference. First operand has 300 places, 258 transitions, 967 flow. Second operand 14 states and 2975 transitions. [2022-07-21 08:58:49,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 277 transitions, 1266 flow [2022-07-21 08:58:49,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 277 transitions, 1191 flow, removed 28 selfloop flow, removed 8 redundant places. [2022-07-21 08:58:49,083 INFO L242 Difference]: Finished difference. Result has 303 places, 247 transitions, 782 flow [2022-07-21 08:58:49,083 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=782, PETRI_PLACES=303, PETRI_TRANSITIONS=247} [2022-07-21 08:58:49,084 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 74 predicate places. [2022-07-21 08:58:49,084 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 247 transitions, 782 flow [2022-07-21 08:58:49,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:49,085 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:49,085 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:49,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:58:49,086 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:49,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:49,086 INFO L85 PathProgramCache]: Analyzing trace with hash 4897569, now seen corresponding path program 9 times [2022-07-21 08:58:49,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:49,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370626580] [2022-07-21 08:58:49,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:49,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:49,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:49,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:49,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370626580] [2022-07-21 08:58:49,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370626580] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:49,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:49,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:58:49,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145804497] [2022-07-21 08:58:49,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:49,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:58:49,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:49,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:58:49,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:58:49,206 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-21 08:58:49,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 247 transitions, 782 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:49,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:49,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-21 08:58:49,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:49,575 INFO L129 PetriNetUnfolder]: 132/1083 cut-off events. [2022-07-21 08:58:49,575 INFO L130 PetriNetUnfolder]: For 2334/2373 co-relation queries the response was YES. [2022-07-21 08:58:49,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2536 conditions, 1083 events. 132/1083 cut-off events. For 2334/2373 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6474 event pairs, 84 based on Foata normal form. 2/1012 useless extension candidates. Maximal degree in co-relation 2494. Up to 293 conditions per place. [2022-07-21 08:58:49,588 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 44 selfloop transitions, 10 changer transitions 26/282 dead transitions. [2022-07-21 08:58:49,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 282 transitions, 1250 flow [2022-07-21 08:58:49,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:58:49,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 08:58:49,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3401 transitions. [2022-07-21 08:58:49,594 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8435019841269841 [2022-07-21 08:58:49,594 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3401 transitions. [2022-07-21 08:58:49,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3401 transitions. [2022-07-21 08:58:49,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:49,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3401 transitions. [2022-07-21 08:58:49,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 212.5625) internal successors, (3401), 16 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:49,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:49,614 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:49,614 INFO L186 Difference]: Start difference. First operand has 303 places, 247 transitions, 782 flow. Second operand 16 states and 3401 transitions. [2022-07-21 08:58:49,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 282 transitions, 1250 flow [2022-07-21 08:58:49,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 282 transitions, 1136 flow, removed 26 selfloop flow, removed 17 redundant places. [2022-07-21 08:58:49,632 INFO L242 Difference]: Finished difference. Result has 293 places, 248 transitions, 803 flow [2022-07-21 08:58:49,632 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=803, PETRI_PLACES=293, PETRI_TRANSITIONS=248} [2022-07-21 08:58:49,633 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 64 predicate places. [2022-07-21 08:58:49,633 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 248 transitions, 803 flow [2022-07-21 08:58:49,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:49,634 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:49,634 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:49,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:58:49,635 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:49,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:49,635 INFO L85 PathProgramCache]: Analyzing trace with hash 601347723, now seen corresponding path program 10 times [2022-07-21 08:58:49,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:49,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052678025] [2022-07-21 08:58:49,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:49,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:49,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:49,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:49,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052678025] [2022-07-21 08:58:49,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052678025] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:49,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:49,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:58:49,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131245680] [2022-07-21 08:58:49,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:49,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:58:49,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:49,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:58:49,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:58:49,760 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-21 08:58:49,762 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 248 transitions, 803 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:49,762 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:49,763 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-21 08:58:49,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:50,066 INFO L129 PetriNetUnfolder]: 127/994 cut-off events. [2022-07-21 08:58:50,066 INFO L130 PetriNetUnfolder]: For 1863/1899 co-relation queries the response was YES. [2022-07-21 08:58:50,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2278 conditions, 994 events. 127/994 cut-off events. For 1863/1899 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5557 event pairs, 84 based on Foata normal form. 2/923 useless extension candidates. Maximal degree in co-relation 2237. Up to 276 conditions per place. [2022-07-21 08:58:50,077 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 39 selfloop transitions, 2 changer transitions 28/269 dead transitions. [2022-07-21 08:58:50,077 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 269 transitions, 1061 flow [2022-07-21 08:58:50,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:58:50,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:58:50,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2976 transitions. [2022-07-21 08:58:50,082 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8435374149659864 [2022-07-21 08:58:50,082 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2976 transitions. [2022-07-21 08:58:50,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2976 transitions. [2022-07-21 08:58:50,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:50,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2976 transitions. [2022-07-21 08:58:50,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.57142857142858) internal successors, (2976), 14 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:50,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:50,094 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:50,094 INFO L186 Difference]: Start difference. First operand has 293 places, 248 transitions, 803 flow. Second operand 14 states and 2976 transitions. [2022-07-21 08:58:50,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 269 transitions, 1061 flow [2022-07-21 08:58:50,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 269 transitions, 997 flow, removed 24 selfloop flow, removed 12 redundant places. [2022-07-21 08:58:50,109 INFO L242 Difference]: Finished difference. Result has 289 places, 235 transitions, 640 flow [2022-07-21 08:58:50,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=640, PETRI_PLACES=289, PETRI_TRANSITIONS=235} [2022-07-21 08:58:50,110 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 60 predicate places. [2022-07-21 08:58:50,110 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 235 transitions, 640 flow [2022-07-21 08:58:50,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:50,111 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:50,111 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:50,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:58:50,112 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:50,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:50,112 INFO L85 PathProgramCache]: Analyzing trace with hash 2015398089, now seen corresponding path program 1 times [2022-07-21 08:58:50,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:50,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793282118] [2022-07-21 08:58:50,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:50,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:50,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:50,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793282118] [2022-07-21 08:58:50,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793282118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:50,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:50,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:58:50,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788374908] [2022-07-21 08:58:50,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:50,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:58:50,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:50,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:58:50,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:58:50,226 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-21 08:58:50,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 235 transitions, 640 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:50,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:50,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-21 08:58:50,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:50,519 INFO L129 PetriNetUnfolder]: 158/1047 cut-off events. [2022-07-21 08:58:50,519 INFO L130 PetriNetUnfolder]: For 1870/1889 co-relation queries the response was YES. [2022-07-21 08:58:50,525 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2375 conditions, 1047 events. 158/1047 cut-off events. For 1870/1889 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5878 event pairs, 101 based on Foata normal form. 2/969 useless extension candidates. Maximal degree in co-relation 2339. Up to 307 conditions per place. [2022-07-21 08:58:50,529 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 43 selfloop transitions, 12 changer transitions 15/271 dead transitions. [2022-07-21 08:58:50,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 271 transitions, 1013 flow [2022-07-21 08:58:50,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:58:50,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:58:50,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2978 transitions. [2022-07-21 08:58:50,533 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8441043083900227 [2022-07-21 08:58:50,534 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2978 transitions. [2022-07-21 08:58:50,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2978 transitions. [2022-07-21 08:58:50,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:50,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2978 transitions. [2022-07-21 08:58:50,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.71428571428572) internal successors, (2978), 14 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:50,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:50,544 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:50,544 INFO L186 Difference]: Start difference. First operand has 289 places, 235 transitions, 640 flow. Second operand 14 states and 2978 transitions. [2022-07-21 08:58:50,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 271 transitions, 1013 flow [2022-07-21 08:58:50,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 271 transitions, 967 flow, removed 17 selfloop flow, removed 18 redundant places. [2022-07-21 08:58:50,556 INFO L242 Difference]: Finished difference. Result has 274 places, 247 transitions, 769 flow [2022-07-21 08:58:50,556 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=769, PETRI_PLACES=274, PETRI_TRANSITIONS=247} [2022-07-21 08:58:50,557 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 45 predicate places. [2022-07-21 08:58:50,557 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 247 transitions, 769 flow [2022-07-21 08:58:50,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:50,558 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:50,558 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:50,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:58:50,558 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:50,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:50,559 INFO L85 PathProgramCache]: Analyzing trace with hash -319056827, now seen corresponding path program 2 times [2022-07-21 08:58:50,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:50,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917896498] [2022-07-21 08:58:50,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:50,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:50,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:50,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917896498] [2022-07-21 08:58:50,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917896498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:50,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:50,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:58:50,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077074676] [2022-07-21 08:58:50,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:50,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:58:50,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:50,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:58:50,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:58:50,675 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-21 08:58:50,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 247 transitions, 769 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:50,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:50,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-21 08:58:50,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:51,021 INFO L129 PetriNetUnfolder]: 163/1080 cut-off events. [2022-07-21 08:58:51,022 INFO L130 PetriNetUnfolder]: For 2183/2210 co-relation queries the response was YES. [2022-07-21 08:58:51,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 1080 events. 163/1080 cut-off events. For 2183/2210 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6490 event pairs, 101 based on Foata normal form. 4/1007 useless extension candidates. Maximal degree in co-relation 2656. Up to 284 conditions per place. [2022-07-21 08:58:51,032 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 74 selfloop transitions, 7 changer transitions 24/306 dead transitions. [2022-07-21 08:58:51,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 306 transitions, 1347 flow [2022-07-21 08:58:51,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 08:58:51,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 08:58:51,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3625 transitions. [2022-07-21 08:58:51,038 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.846171802054155 [2022-07-21 08:58:51,038 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3625 transitions. [2022-07-21 08:58:51,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3625 transitions. [2022-07-21 08:58:51,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:51,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3625 transitions. [2022-07-21 08:58:51,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 213.23529411764707) internal successors, (3625), 17 states have internal predecessors, (3625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 252.0) internal successors, (4536), 18 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,050 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 252.0) internal successors, (4536), 18 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,050 INFO L186 Difference]: Start difference. First operand has 274 places, 247 transitions, 769 flow. Second operand 17 states and 3625 transitions. [2022-07-21 08:58:51,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 306 transitions, 1347 flow [2022-07-21 08:58:51,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 306 transitions, 1179 flow, removed 84 selfloop flow, removed 4 redundant places. [2022-07-21 08:58:51,068 INFO L242 Difference]: Finished difference. Result has 293 places, 248 transitions, 746 flow [2022-07-21 08:58:51,069 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=746, PETRI_PLACES=293, PETRI_TRANSITIONS=248} [2022-07-21 08:58:51,069 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 64 predicate places. [2022-07-21 08:58:51,069 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 248 transitions, 746 flow [2022-07-21 08:58:51,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,070 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:51,070 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:51,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:58:51,071 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:51,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:51,071 INFO L85 PathProgramCache]: Analyzing trace with hash 132623727, now seen corresponding path program 3 times [2022-07-21 08:58:51,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:51,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588864318] [2022-07-21 08:58:51,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:51,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:51,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:51,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:51,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588864318] [2022-07-21 08:58:51,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588864318] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:51,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:51,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:58:51,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004042543] [2022-07-21 08:58:51,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:51,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:58:51,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:51,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:58:51,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:58:51,174 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-21 08:58:51,176 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 248 transitions, 746 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:51,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-21 08:58:51,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:51,534 INFO L129 PetriNetUnfolder]: 171/1196 cut-off events. [2022-07-21 08:58:51,534 INFO L130 PetriNetUnfolder]: For 2890/2924 co-relation queries the response was YES. [2022-07-21 08:58:51,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3053 conditions, 1196 events. 171/1196 cut-off events. For 2890/2924 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7323 event pairs, 105 based on Foata normal form. 3/1118 useless extension candidates. Maximal degree in co-relation 3012. Up to 279 conditions per place. [2022-07-21 08:58:51,548 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 87 selfloop transitions, 12 changer transitions 24/324 dead transitions. [2022-07-21 08:58:51,549 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 324 transitions, 1518 flow [2022-07-21 08:58:51,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 08:58:51,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 08:58:51,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3835 transitions. [2022-07-21 08:58:51,554 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8454585537918872 [2022-07-21 08:58:51,554 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3835 transitions. [2022-07-21 08:58:51,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3835 transitions. [2022-07-21 08:58:51,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:51,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3835 transitions. [2022-07-21 08:58:51,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 213.05555555555554) internal successors, (3835), 18 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,565 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,566 INFO L186 Difference]: Start difference. First operand has 293 places, 248 transitions, 746 flow. Second operand 18 states and 3835 transitions. [2022-07-21 08:58:51,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 324 transitions, 1518 flow [2022-07-21 08:58:51,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 324 transitions, 1444 flow, removed 34 selfloop flow, removed 12 redundant places. [2022-07-21 08:58:51,584 INFO L242 Difference]: Finished difference. Result has 302 places, 253 transitions, 855 flow [2022-07-21 08:58:51,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=855, PETRI_PLACES=302, PETRI_TRANSITIONS=253} [2022-07-21 08:58:51,586 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 73 predicate places. [2022-07-21 08:58:51,586 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 253 transitions, 855 flow [2022-07-21 08:58:51,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,586 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:51,587 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:51,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:58:51,587 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:51,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:51,588 INFO L85 PathProgramCache]: Analyzing trace with hash -714033523, now seen corresponding path program 4 times [2022-07-21 08:58:51,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:51,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423094780] [2022-07-21 08:58:51,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:51,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:51,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:51,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:51,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423094780] [2022-07-21 08:58:51,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423094780] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:51,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:51,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:58:51,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597414947] [2022-07-21 08:58:51,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:51,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:58:51,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:51,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:58:51,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:58:51,712 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-21 08:58:51,714 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 253 transitions, 855 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:51,714 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-21 08:58:51,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:52,070 INFO L129 PetriNetUnfolder]: 169/1217 cut-off events. [2022-07-21 08:58:52,070 INFO L130 PetriNetUnfolder]: For 3704/3743 co-relation queries the response was YES. [2022-07-21 08:58:52,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3359 conditions, 1217 events. 169/1217 cut-off events. For 3704/3743 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7653 event pairs, 124 based on Foata normal form. 4/1133 useless extension candidates. Maximal degree in co-relation 3313. Up to 363 conditions per place. [2022-07-21 08:58:52,083 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 54 selfloop transitions, 10 changer transitions 20/285 dead transitions. [2022-07-21 08:58:52,084 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 285 transitions, 1305 flow [2022-07-21 08:58:52,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:58:52,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 08:58:52,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3398 transitions. [2022-07-21 08:58:52,088 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8427579365079365 [2022-07-21 08:58:52,088 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3398 transitions. [2022-07-21 08:58:52,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3398 transitions. [2022-07-21 08:58:52,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:52,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3398 transitions. [2022-07-21 08:58:52,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 212.375) internal successors, (3398), 16 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:52,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:52,099 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:52,100 INFO L186 Difference]: Start difference. First operand has 302 places, 253 transitions, 855 flow. Second operand 16 states and 3398 transitions. [2022-07-21 08:58:52,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 285 transitions, 1305 flow [2022-07-21 08:58:52,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 285 transitions, 1243 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-07-21 08:58:52,122 INFO L242 Difference]: Finished difference. Result has 308 places, 255 transitions, 898 flow [2022-07-21 08:58:52,123 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=898, PETRI_PLACES=308, PETRI_TRANSITIONS=255} [2022-07-21 08:58:52,124 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 79 predicate places. [2022-07-21 08:58:52,125 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 255 transitions, 898 flow [2022-07-21 08:58:52,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:52,126 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:52,126 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:52,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:58:52,128 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:52,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:52,128 INFO L85 PathProgramCache]: Analyzing trace with hash 885409187, now seen corresponding path program 5 times [2022-07-21 08:58:52,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:52,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104077989] [2022-07-21 08:58:52,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:52,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:52,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:52,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:52,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104077989] [2022-07-21 08:58:52,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104077989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:52,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:52,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:58:52,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074977250] [2022-07-21 08:58:52,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:52,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:58:52,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:52,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:58:52,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:58:52,233 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-21 08:58:52,234 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 255 transitions, 898 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:52,235 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:52,235 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-21 08:58:52,235 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:52,572 INFO L129 PetriNetUnfolder]: 167/1207 cut-off events. [2022-07-21 08:58:52,572 INFO L130 PetriNetUnfolder]: For 3332/3379 co-relation queries the response was YES. [2022-07-21 08:58:52,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3318 conditions, 1207 events. 167/1207 cut-off events. For 3332/3379 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7505 event pairs, 110 based on Foata normal form. 3/1128 useless extension candidates. Maximal degree in co-relation 3269. Up to 329 conditions per place. [2022-07-21 08:58:52,583 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 59 selfloop transitions, 12 changer transitions 20/292 dead transitions. [2022-07-21 08:58:52,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 292 transitions, 1461 flow [2022-07-21 08:58:52,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:58:52,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-21 08:58:52,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3192 transitions. [2022-07-21 08:58:52,587 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2022-07-21 08:58:52,587 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3192 transitions. [2022-07-21 08:58:52,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3192 transitions. [2022-07-21 08:58:52,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:52,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3192 transitions. [2022-07-21 08:58:52,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 212.8) internal successors, (3192), 15 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:52,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:52,595 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:52,596 INFO L186 Difference]: Start difference. First operand has 308 places, 255 transitions, 898 flow. Second operand 15 states and 3192 transitions. [2022-07-21 08:58:52,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 292 transitions, 1461 flow [2022-07-21 08:58:52,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 292 transitions, 1377 flow, removed 32 selfloop flow, removed 10 redundant places. [2022-07-21 08:58:52,614 INFO L242 Difference]: Finished difference. Result has 314 places, 261 transitions, 1005 flow [2022-07-21 08:58:52,614 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1005, PETRI_PLACES=314, PETRI_TRANSITIONS=261} [2022-07-21 08:58:52,615 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 85 predicate places. [2022-07-21 08:58:52,615 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 261 transitions, 1005 flow [2022-07-21 08:58:52,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:52,616 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:52,616 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:52,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:58:52,616 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:52,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:52,617 INFO L85 PathProgramCache]: Analyzing trace with hash -387112815, now seen corresponding path program 6 times [2022-07-21 08:58:52,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:52,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744374124] [2022-07-21 08:58:52,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:52,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:52,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:52,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:52,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744374124] [2022-07-21 08:58:52,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744374124] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:52,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:52,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:58:52,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412815058] [2022-07-21 08:58:52,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:52,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:58:52,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:52,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:58:52,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:58:52,729 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-21 08:58:52,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 261 transitions, 1005 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:52,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:52,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-21 08:58:52,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:53,008 INFO L129 PetriNetUnfolder]: 156/1172 cut-off events. [2022-07-21 08:58:53,009 INFO L130 PetriNetUnfolder]: For 3440/3481 co-relation queries the response was YES. [2022-07-21 08:58:53,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3267 conditions, 1172 events. 156/1172 cut-off events. For 3440/3481 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7186 event pairs, 122 based on Foata normal form. 4/1088 useless extension candidates. Maximal degree in co-relation 3214. Up to 363 conditions per place. [2022-07-21 08:58:53,021 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 51 selfloop transitions, 4 changer transitions 24/280 dead transitions. [2022-07-21 08:58:53,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 280 transitions, 1354 flow [2022-07-21 08:58:53,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:58:53,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:58:53,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2974 transitions. [2022-07-21 08:58:53,025 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8429705215419501 [2022-07-21 08:58:53,025 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2974 transitions. [2022-07-21 08:58:53,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2974 transitions. [2022-07-21 08:58:53,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:53,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2974 transitions. [2022-07-21 08:58:53,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.42857142857142) internal successors, (2974), 14 states have internal predecessors, (2974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:53,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:53,033 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:53,033 INFO L186 Difference]: Start difference. First operand has 314 places, 261 transitions, 1005 flow. Second operand 14 states and 2974 transitions. [2022-07-21 08:58:53,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 280 transitions, 1354 flow [2022-07-21 08:58:53,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 280 transitions, 1283 flow, removed 31 selfloop flow, removed 9 redundant places. [2022-07-21 08:58:53,055 INFO L242 Difference]: Finished difference. Result has 314 places, 249 transitions, 824 flow [2022-07-21 08:58:53,055 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=824, PETRI_PLACES=314, PETRI_TRANSITIONS=249} [2022-07-21 08:58:53,055 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 85 predicate places. [2022-07-21 08:58:53,056 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 249 transitions, 824 flow [2022-07-21 08:58:53,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:53,056 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:53,056 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:53,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:58:53,057 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:53,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:53,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1758871115, now seen corresponding path program 7 times [2022-07-21 08:58:53,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:53,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065372066] [2022-07-21 08:58:53,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:53,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:53,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:53,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:53,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065372066] [2022-07-21 08:58:53,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065372066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:53,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:53,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:58:53,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112521948] [2022-07-21 08:58:53,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:53,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:58:53,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:53,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:58:53,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:58:53,163 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-21 08:58:53,164 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 249 transitions, 824 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:53,164 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:53,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-21 08:58:53,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:53,515 INFO L129 PetriNetUnfolder]: 160/1161 cut-off events. [2022-07-21 08:58:53,515 INFO L130 PetriNetUnfolder]: For 3152/3193 co-relation queries the response was YES. [2022-07-21 08:58:53,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3154 conditions, 1161 events. 160/1161 cut-off events. For 3152/3193 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7027 event pairs, 113 based on Foata normal form. 3/1084 useless extension candidates. Maximal degree in co-relation 3104. Up to 327 conditions per place. [2022-07-21 08:58:53,523 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 51 selfloop transitions, 16 changer transitions 18/286 dead transitions. [2022-07-21 08:58:53,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 286 transitions, 1351 flow [2022-07-21 08:58:53,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:58:53,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 08:58:53,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3397 transitions. [2022-07-21 08:58:53,529 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8425099206349206 [2022-07-21 08:58:53,529 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3397 transitions. [2022-07-21 08:58:53,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3397 transitions. [2022-07-21 08:58:53,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:53,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3397 transitions. [2022-07-21 08:58:53,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 212.3125) internal successors, (3397), 16 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:53,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:53,536 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:53,536 INFO L186 Difference]: Start difference. First operand has 314 places, 249 transitions, 824 flow. Second operand 16 states and 3397 transitions. [2022-07-21 08:58:53,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 286 transitions, 1351 flow [2022-07-21 08:58:53,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 286 transitions, 1254 flow, removed 27 selfloop flow, removed 13 redundant places. [2022-07-21 08:58:53,552 INFO L242 Difference]: Finished difference. Result has 307 places, 258 transitions, 960 flow [2022-07-21 08:58:53,552 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=960, PETRI_PLACES=307, PETRI_TRANSITIONS=258} [2022-07-21 08:58:53,553 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 78 predicate places. [2022-07-21 08:58:53,553 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 258 transitions, 960 flow [2022-07-21 08:58:53,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:53,553 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:53,553 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:53,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:58:53,554 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:53,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:53,554 INFO L85 PathProgramCache]: Analyzing trace with hash 827468711, now seen corresponding path program 8 times [2022-07-21 08:58:53,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:53,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869334770] [2022-07-21 08:58:53,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:53,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:53,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:53,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:53,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869334770] [2022-07-21 08:58:53,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869334770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:53,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:53,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:58:53,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225802870] [2022-07-21 08:58:53,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:53,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:58:53,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:53,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:58:53,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:58:53,668 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-21 08:58:53,670 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 258 transitions, 960 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:53,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:53,670 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-21 08:58:53,670 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:53,983 INFO L129 PetriNetUnfolder]: 156/1152 cut-off events. [2022-07-21 08:58:53,984 INFO L130 PetriNetUnfolder]: For 2624/2665 co-relation queries the response was YES. [2022-07-21 08:58:53,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3046 conditions, 1152 events. 156/1152 cut-off events. For 2624/2665 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6988 event pairs, 112 based on Foata normal form. 3/1072 useless extension candidates. Maximal degree in co-relation 2998. Up to 325 conditions per place. [2022-07-21 08:58:53,994 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 48 selfloop transitions, 17 changer transitions 18/284 dead transitions. [2022-07-21 08:58:53,994 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 284 transitions, 1391 flow [2022-07-21 08:58:53,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:58:53,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-21 08:58:53,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3189 transitions. [2022-07-21 08:58:53,998 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8436507936507937 [2022-07-21 08:58:53,998 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3189 transitions. [2022-07-21 08:58:53,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3189 transitions. [2022-07-21 08:58:53,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:53,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3189 transitions. [2022-07-21 08:58:54,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 212.6) internal successors, (3189), 15 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:54,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:54,006 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:54,006 INFO L186 Difference]: Start difference. First operand has 307 places, 258 transitions, 960 flow. Second operand 15 states and 3189 transitions. [2022-07-21 08:58:54,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 284 transitions, 1391 flow [2022-07-21 08:58:54,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 284 transitions, 1343 flow, removed 20 selfloop flow, removed 5 redundant places. [2022-07-21 08:58:54,026 INFO L242 Difference]: Finished difference. Result has 317 places, 261 transitions, 1044 flow [2022-07-21 08:58:54,027 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1044, PETRI_PLACES=317, PETRI_TRANSITIONS=261} [2022-07-21 08:58:54,027 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 88 predicate places. [2022-07-21 08:58:54,028 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 261 transitions, 1044 flow [2022-07-21 08:58:54,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:54,028 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:54,028 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:54,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:58:54,029 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:54,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:54,029 INFO L85 PathProgramCache]: Analyzing trace with hash -985639963, now seen corresponding path program 9 times [2022-07-21 08:58:54,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:54,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60029238] [2022-07-21 08:58:54,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:54,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:54,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:54,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60029238] [2022-07-21 08:58:54,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60029238] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:54,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:54,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:58:54,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211791693] [2022-07-21 08:58:54,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:54,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:58:54,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:54,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:58:54,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:58:54,125 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-21 08:58:54,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 261 transitions, 1044 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:54,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:54,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-21 08:58:54,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:54,451 INFO L129 PetriNetUnfolder]: 153/1143 cut-off events. [2022-07-21 08:58:54,451 INFO L130 PetriNetUnfolder]: For 2797/2838 co-relation queries the response was YES. [2022-07-21 08:58:54,459 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3049 conditions, 1143 events. 153/1143 cut-off events. For 2797/2838 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6900 event pairs, 111 based on Foata normal form. 3/1065 useless extension candidates. Maximal degree in co-relation 2996. Up to 324 conditions per place. [2022-07-21 08:58:54,462 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 52 selfloop transitions, 8 changer transitions 23/284 dead transitions. [2022-07-21 08:58:54,463 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 284 transitions, 1375 flow [2022-07-21 08:58:54,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:58:54,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:58:54,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2768 transitions. [2022-07-21 08:58:54,466 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8449328449328449 [2022-07-21 08:58:54,466 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2768 transitions. [2022-07-21 08:58:54,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2768 transitions. [2022-07-21 08:58:54,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:54,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2768 transitions. [2022-07-21 08:58:54,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 212.92307692307693) internal successors, (2768), 13 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:54,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 252.0) internal successors, (3528), 14 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:54,526 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 252.0) internal successors, (3528), 14 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:54,527 INFO L186 Difference]: Start difference. First operand has 317 places, 261 transitions, 1044 flow. Second operand 13 states and 2768 transitions. [2022-07-21 08:58:54,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 284 transitions, 1375 flow [2022-07-21 08:58:54,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 284 transitions, 1303 flow, removed 23 selfloop flow, removed 7 redundant places. [2022-07-21 08:58:54,546 INFO L242 Difference]: Finished difference. Result has 320 places, 253 transitions, 892 flow [2022-07-21 08:58:54,546 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=892, PETRI_PLACES=320, PETRI_TRANSITIONS=253} [2022-07-21 08:58:54,547 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 91 predicate places. [2022-07-21 08:58:54,547 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 253 transitions, 892 flow [2022-07-21 08:58:54,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:54,548 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:54,548 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:54,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:58:54,548 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:54,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:54,549 INFO L85 PathProgramCache]: Analyzing trace with hash 951573327, now seen corresponding path program 10 times [2022-07-21 08:58:54,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:54,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77656722] [2022-07-21 08:58:54,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:54,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:54,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:54,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:54,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77656722] [2022-07-21 08:58:54,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77656722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:54,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:54,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:58:54,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045200840] [2022-07-21 08:58:54,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:54,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:58:54,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:54,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:58:54,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:58:54,661 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-21 08:58:54,662 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 253 transitions, 892 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:54,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:54,662 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-21 08:58:54,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:55,005 INFO L129 PetriNetUnfolder]: 145/1075 cut-off events. [2022-07-21 08:58:55,006 INFO L130 PetriNetUnfolder]: For 2514/2555 co-relation queries the response was YES. [2022-07-21 08:58:55,012 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2801 conditions, 1075 events. 145/1075 cut-off events. For 2514/2555 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6225 event pairs, 109 based on Foata normal form. 3/997 useless extension candidates. Maximal degree in co-relation 2748. Up to 305 conditions per place. [2022-07-21 08:58:55,015 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 43 selfloop transitions, 2 changer transitions 26/270 dead transitions. [2022-07-21 08:58:55,015 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 270 transitions, 1155 flow [2022-07-21 08:58:55,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:58:55,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:58:55,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2974 transitions. [2022-07-21 08:58:55,018 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8429705215419501 [2022-07-21 08:58:55,018 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2974 transitions. [2022-07-21 08:58:55,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2974 transitions. [2022-07-21 08:58:55,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:55,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2974 transitions. [2022-07-21 08:58:55,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.42857142857142) internal successors, (2974), 14 states have internal predecessors, (2974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,027 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,027 INFO L186 Difference]: Start difference. First operand has 320 places, 253 transitions, 892 flow. Second operand 14 states and 2974 transitions. [2022-07-21 08:58:55,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 270 transitions, 1155 flow [2022-07-21 08:58:55,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 270 transitions, 1087 flow, removed 16 selfloop flow, removed 14 redundant places. [2022-07-21 08:58:55,045 INFO L242 Difference]: Finished difference. Result has 311 places, 240 transitions, 714 flow [2022-07-21 08:58:55,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=714, PETRI_PLACES=311, PETRI_TRANSITIONS=240} [2022-07-21 08:58:55,046 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 82 predicate places. [2022-07-21 08:58:55,046 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 240 transitions, 714 flow [2022-07-21 08:58:55,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,047 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:55,047 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:55,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 08:58:55,047 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:55,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:55,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1243438433, now seen corresponding path program 1 times [2022-07-21 08:58:55,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:55,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051589983] [2022-07-21 08:58:55,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:55,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:55,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:55,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051589983] [2022-07-21 08:58:55,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051589983] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:55,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:55,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:58:55,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956858247] [2022-07-21 08:58:55,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:55,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:58:55,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:55,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:58:55,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:58:55,090 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 252 [2022-07-21 08:58:55,090 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 240 transitions, 714 flow. Second operand has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,090 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:55,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 252 [2022-07-21 08:58:55,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:55,183 INFO L129 PetriNetUnfolder]: 42/597 cut-off events. [2022-07-21 08:58:55,183 INFO L130 PetriNetUnfolder]: For 837/861 co-relation queries the response was YES. [2022-07-21 08:58:55,186 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 597 events. 42/597 cut-off events. For 837/861 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2501 event pairs, 22 based on Foata normal form. 3/568 useless extension candidates. Maximal degree in co-relation 1177. Up to 41 conditions per place. [2022-07-21 08:58:55,188 INFO L132 encePairwiseOnDemand]: 247/252 looper letters, 16 selfloop transitions, 2 changer transitions 12/246 dead transitions. [2022-07-21 08:58:55,188 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 246 transitions, 783 flow [2022-07-21 08:58:55,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:58:55,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:58:55,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 696 transitions. [2022-07-21 08:58:55,189 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9206349206349206 [2022-07-21 08:58:55,189 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 696 transitions. [2022-07-21 08:58:55,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 696 transitions. [2022-07-21 08:58:55,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:55,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 696 transitions. [2022-07-21 08:58:55,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,191 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,191 INFO L186 Difference]: Start difference. First operand has 311 places, 240 transitions, 714 flow. Second operand 3 states and 696 transitions. [2022-07-21 08:58:55,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 246 transitions, 783 flow [2022-07-21 08:58:55,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 246 transitions, 707 flow, removed 31 selfloop flow, removed 22 redundant places. [2022-07-21 08:58:55,199 INFO L242 Difference]: Finished difference. Result has 273 places, 232 transitions, 602 flow [2022-07-21 08:58:55,200 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=602, PETRI_PLACES=273, PETRI_TRANSITIONS=232} [2022-07-21 08:58:55,200 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 44 predicate places. [2022-07-21 08:58:55,201 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 232 transitions, 602 flow [2022-07-21 08:58:55,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,201 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:55,201 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:55,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 08:58:55,202 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:55,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:55,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1851538177, now seen corresponding path program 1 times [2022-07-21 08:58:55,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:55,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720261349] [2022-07-21 08:58:55,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:55,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:55,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:55,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:55,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720261349] [2022-07-21 08:58:55,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720261349] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:55,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:55,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:58:55,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250901435] [2022-07-21 08:58:55,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:55,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:58:55,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:55,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:58:55,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:58:55,239 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 252 [2022-07-21 08:58:55,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 232 transitions, 602 flow. Second operand has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:55,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 252 [2022-07-21 08:58:55,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:55,300 INFO L129 PetriNetUnfolder]: 25/348 cut-off events. [2022-07-21 08:58:55,301 INFO L130 PetriNetUnfolder]: For 194/195 co-relation queries the response was YES. [2022-07-21 08:58:55,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 348 events. 25/348 cut-off events. For 194/195 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 838 event pairs, 7 based on Foata normal form. 4/329 useless extension candidates. Maximal degree in co-relation 558. Up to 22 conditions per place. [2022-07-21 08:58:55,304 INFO L132 encePairwiseOnDemand]: 248/252 looper letters, 16 selfloop transitions, 2 changer transitions 11/236 dead transitions. [2022-07-21 08:58:55,304 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 236 transitions, 659 flow [2022-07-21 08:58:55,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:58:55,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:58:55,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 693 transitions. [2022-07-21 08:58:55,306 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2022-07-21 08:58:55,306 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 693 transitions. [2022-07-21 08:58:55,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 693 transitions. [2022-07-21 08:58:55,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:55,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 693 transitions. [2022-07-21 08:58:55,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,308 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,308 INFO L186 Difference]: Start difference. First operand has 273 places, 232 transitions, 602 flow. Second operand 3 states and 693 transitions. [2022-07-21 08:58:55,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 236 transitions, 659 flow [2022-07-21 08:58:55,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 236 transitions, 609 flow, removed 24 selfloop flow, removed 11 redundant places. [2022-07-21 08:58:55,313 INFO L242 Difference]: Finished difference. Result has 253 places, 223 transitions, 508 flow [2022-07-21 08:58:55,314 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=253, PETRI_TRANSITIONS=223} [2022-07-21 08:58:55,314 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 24 predicate places. [2022-07-21 08:58:55,314 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 223 transitions, 508 flow [2022-07-21 08:58:55,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,315 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:55,315 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:55,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 08:58:55,315 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:55,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:55,316 INFO L85 PathProgramCache]: Analyzing trace with hash -643342495, now seen corresponding path program 1 times [2022-07-21 08:58:55,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:55,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434471446] [2022-07-21 08:58:55,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:55,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:55,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:55,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434471446] [2022-07-21 08:58:55,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434471446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:55,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:55,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-21 08:58:55,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364809251] [2022-07-21 08:58:55,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:55,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-21 08:58:55,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:55,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-21 08:58:55,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-21 08:58:55,688 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-21 08:58:55,690 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 223 transitions, 508 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:55,691 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:55,691 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-21 08:58:55,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:59,450 INFO L129 PetriNetUnfolder]: 958/4403 cut-off events. [2022-07-21 08:58:59,450 INFO L130 PetriNetUnfolder]: For 603/609 co-relation queries the response was YES. [2022-07-21 08:58:59,463 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7289 conditions, 4403 events. 958/4403 cut-off events. For 603/609 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 35203 event pairs, 88 based on Foata normal form. 0/4115 useless extension candidates. Maximal degree in co-relation 7268. Up to 291 conditions per place. [2022-07-21 08:58:59,472 INFO L132 encePairwiseOnDemand]: 216/252 looper letters, 569 selfloop transitions, 68 changer transitions 0/792 dead transitions. [2022-07-21 08:58:59,472 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 792 transitions, 2960 flow [2022-07-21 08:58:59,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-21 08:58:59,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-07-21 08:58:59,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 9755 transitions. [2022-07-21 08:58:59,481 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7303833483078767 [2022-07-21 08:58:59,481 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 9755 transitions. [2022-07-21 08:58:59,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 9755 transitions. [2022-07-21 08:58:59,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:59,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 9755 transitions. [2022-07-21 08:58:59,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 184.0566037735849) internal successors, (9755), 53 states have internal predecessors, (9755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:59,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 252.0) internal successors, (13608), 54 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:59,503 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 252.0) internal successors, (13608), 54 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:59,503 INFO L186 Difference]: Start difference. First operand has 253 places, 223 transitions, 508 flow. Second operand 53 states and 9755 transitions. [2022-07-21 08:58:59,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 792 transitions, 2960 flow [2022-07-21 08:58:59,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 792 transitions, 2938 flow, removed 11 selfloop flow, removed 7 redundant places. [2022-07-21 08:58:59,525 INFO L242 Difference]: Finished difference. Result has 303 places, 274 transitions, 796 flow [2022-07-21 08:58:59,525 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=796, PETRI_PLACES=303, PETRI_TRANSITIONS=274} [2022-07-21 08:58:59,526 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 74 predicate places. [2022-07-21 08:58:59,526 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 274 transitions, 796 flow [2022-07-21 08:58:59,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:59,527 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:59,527 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:59,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 08:58:59,528 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:59,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:59,528 INFO L85 PathProgramCache]: Analyzing trace with hash 214875707, now seen corresponding path program 2 times [2022-07-21 08:58:59,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:59,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755633171] [2022-07-21 08:58:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:59,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:59,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:59,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:59,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755633171] [2022-07-21 08:58:59,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755633171] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:59,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:59,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-21 08:58:59,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956845083] [2022-07-21 08:58:59,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:59,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-21 08:58:59,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:59,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-21 08:58:59,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-21 08:58:59,927 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-21 08:58:59,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 274 transitions, 796 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:59,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:59,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-21 08:58:59,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:03,440 INFO L129 PetriNetUnfolder]: 1507/7402 cut-off events. [2022-07-21 08:59:03,440 INFO L130 PetriNetUnfolder]: For 1886/1907 co-relation queries the response was YES. [2022-07-21 08:59:03,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13539 conditions, 7402 events. 1507/7402 cut-off events. For 1886/1907 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 68144 event pairs, 597 based on Foata normal form. 1/7080 useless extension candidates. Maximal degree in co-relation 13507. Up to 1160 conditions per place. [2022-07-21 08:59:03,489 INFO L132 encePairwiseOnDemand]: 214/252 looper letters, 463 selfloop transitions, 87 changer transitions 0/705 dead transitions. [2022-07-21 08:59:03,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 705 transitions, 3338 flow [2022-07-21 08:59:03,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-21 08:59:03,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-07-21 08:59:03,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 8041 transitions. [2022-07-21 08:59:03,501 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7251984126984127 [2022-07-21 08:59:03,501 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 8041 transitions. [2022-07-21 08:59:03,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 8041 transitions. [2022-07-21 08:59:03,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:03,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 8041 transitions. [2022-07-21 08:59:03,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 182.75) internal successors, (8041), 44 states have internal predecessors, (8041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:03,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 252.0) internal successors, (11340), 45 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:03,538 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 252.0) internal successors, (11340), 45 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:03,538 INFO L186 Difference]: Start difference. First operand has 303 places, 274 transitions, 796 flow. Second operand 44 states and 8041 transitions. [2022-07-21 08:59:03,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 705 transitions, 3338 flow [2022-07-21 08:59:03,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 705 transitions, 3142 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-07-21 08:59:03,559 INFO L242 Difference]: Finished difference. Result has 376 places, 357 transitions, 1468 flow [2022-07-21 08:59:03,560 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1468, PETRI_PLACES=376, PETRI_TRANSITIONS=357} [2022-07-21 08:59:03,560 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 147 predicate places. [2022-07-21 08:59:03,561 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 357 transitions, 1468 flow [2022-07-21 08:59:03,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:03,562 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:03,562 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:03,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 08:59:03,562 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:03,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:03,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1848306263, now seen corresponding path program 3 times [2022-07-21 08:59:03,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:03,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603424662] [2022-07-21 08:59:03,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:03,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:03,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:03,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:03,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603424662] [2022-07-21 08:59:03,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603424662] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:03,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:03,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-21 08:59:03,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652097503] [2022-07-21 08:59:03,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:03,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-21 08:59:03,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:03,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-21 08:59:03,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-21 08:59:03,968 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-21 08:59:03,971 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 357 transitions, 1468 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:03,971 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:03,971 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-21 08:59:03,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:10,358 INFO L129 PetriNetUnfolder]: 2948/15266 cut-off events. [2022-07-21 08:59:10,359 INFO L130 PetriNetUnfolder]: For 12842/12914 co-relation queries the response was YES. [2022-07-21 08:59:10,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31539 conditions, 15266 events. 2948/15266 cut-off events. For 12842/12914 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 172941 event pairs, 993 based on Foata normal form. 9/14713 useless extension candidates. Maximal degree in co-relation 31467. Up to 1763 conditions per place. [2022-07-21 08:59:10,494 INFO L132 encePairwiseOnDemand]: 216/252 looper letters, 758 selfloop transitions, 143 changer transitions 0/1056 dead transitions. [2022-07-21 08:59:10,495 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 1056 transitions, 6357 flow [2022-07-21 08:59:10,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-07-21 08:59:10,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-07-21 08:59:10,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 11772 transitions. [2022-07-21 08:59:10,504 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7299107142857143 [2022-07-21 08:59:10,504 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 11772 transitions. [2022-07-21 08:59:10,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 11772 transitions. [2022-07-21 08:59:10,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:10,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 11772 transitions. [2022-07-21 08:59:10,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 183.9375) internal successors, (11772), 64 states have internal predecessors, (11772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 252.0) internal successors, (16380), 65 states have internal predecessors, (16380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,533 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 252.0) internal successors, (16380), 65 states have internal predecessors, (16380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,533 INFO L186 Difference]: Start difference. First operand has 376 places, 357 transitions, 1468 flow. Second operand 64 states and 11772 transitions. [2022-07-21 08:59:10,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 1056 transitions, 6357 flow [2022-07-21 08:59:10,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 1056 transitions, 6313 flow, removed 22 selfloop flow, removed 0 redundant places. [2022-07-21 08:59:10,627 INFO L242 Difference]: Finished difference. Result has 491 places, 481 transitions, 2723 flow [2022-07-21 08:59:10,628 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=2723, PETRI_PLACES=491, PETRI_TRANSITIONS=481} [2022-07-21 08:59:10,628 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 262 predicate places. [2022-07-21 08:59:10,628 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 481 transitions, 2723 flow [2022-07-21 08:59:10,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,629 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:10,629 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:10,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 08:59:10,630 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:10,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:10,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1038615649, now seen corresponding path program 4 times [2022-07-21 08:59:10,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:10,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737489467] [2022-07-21 08:59:10,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:10,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:11,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:11,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:11,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737489467] [2022-07-21 08:59:11,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737489467] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:11,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:11,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-21 08:59:11,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442175760] [2022-07-21 08:59:11,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:11,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-21 08:59:11,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:11,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-21 08:59:11,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-21 08:59:11,054 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-21 08:59:11,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 481 transitions, 2723 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:11,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:11,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-21 08:59:11,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:20,201 INFO L129 PetriNetUnfolder]: 3745/19931 cut-off events. [2022-07-21 08:59:20,201 INFO L130 PetriNetUnfolder]: For 34125/34257 co-relation queries the response was YES. [2022-07-21 08:59:20,401 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46270 conditions, 19931 events. 3745/19931 cut-off events. For 34125/34257 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 241983 event pairs, 774 based on Foata normal form. 29/19251 useless extension candidates. Maximal degree in co-relation 46145. Up to 2766 conditions per place. [2022-07-21 08:59:20,457 INFO L132 encePairwiseOnDemand]: 216/252 looper letters, 869 selfloop transitions, 244 changer transitions 0/1268 dead transitions. [2022-07-21 08:59:20,458 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 1268 transitions, 10110 flow [2022-07-21 08:59:20,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-07-21 08:59:20,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2022-07-21 08:59:20,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 14398 transitions. [2022-07-21 08:59:20,470 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.723226843480008 [2022-07-21 08:59:20,471 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 14398 transitions. [2022-07-21 08:59:20,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 14398 transitions. [2022-07-21 08:59:20,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:20,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 14398 transitions. [2022-07-21 08:59:20,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 182.25316455696202) internal successors, (14398), 79 states have internal predecessors, (14398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:20,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 252.0) internal successors, (20160), 80 states have internal predecessors, (20160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:20,508 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 252.0) internal successors, (20160), 80 states have internal predecessors, (20160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:20,508 INFO L186 Difference]: Start difference. First operand has 491 places, 481 transitions, 2723 flow. Second operand 79 states and 14398 transitions. [2022-07-21 08:59:20,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 1268 transitions, 10110 flow [2022-07-21 08:59:20,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 1268 transitions, 9594 flow, removed 258 selfloop flow, removed 0 redundant places. [2022-07-21 08:59:20,814 INFO L242 Difference]: Finished difference. Result has 632 places, 602 transitions, 4198 flow [2022-07-21 08:59:20,815 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=2409, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=4198, PETRI_PLACES=632, PETRI_TRANSITIONS=602} [2022-07-21 08:59:20,815 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 403 predicate places. [2022-07-21 08:59:20,816 INFO L495 AbstractCegarLoop]: Abstraction has has 632 places, 602 transitions, 4198 flow [2022-07-21 08:59:20,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:20,816 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:20,817 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:20,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-21 08:59:20,817 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:20,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:20,817 INFO L85 PathProgramCache]: Analyzing trace with hash 249018489, now seen corresponding path program 5 times [2022-07-21 08:59:20,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:20,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729173587] [2022-07-21 08:59:20,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:20,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:21,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:21,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:21,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729173587] [2022-07-21 08:59:21,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729173587] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:21,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:21,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-21 08:59:21,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351513972] [2022-07-21 08:59:21,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:21,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-21 08:59:21,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:21,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-21 08:59:21,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-21 08:59:21,209 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-21 08:59:21,210 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 632 places, 602 transitions, 4198 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:21,210 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:21,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-21 08:59:21,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:30,630 INFO L129 PetriNetUnfolder]: 3898/22825 cut-off events. [2022-07-21 08:59:30,630 INFO L130 PetriNetUnfolder]: For 56782/56953 co-relation queries the response was YES. [2022-07-21 08:59:31,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55280 conditions, 22825 events. 3898/22825 cut-off events. For 56782/56953 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 284993 event pairs, 725 based on Foata normal form. 29/22155 useless extension candidates. Maximal degree in co-relation 55091. Up to 2581 conditions per place. [2022-07-21 08:59:31,272 INFO L132 encePairwiseOnDemand]: 216/252 looper letters, 914 selfloop transitions, 288 changer transitions 0/1357 dead transitions. [2022-07-21 08:59:31,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 684 places, 1357 transitions, 12752 flow [2022-07-21 08:59:31,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-21 08:59:31,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-07-21 08:59:31,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 9761 transitions. [2022-07-21 08:59:31,283 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7308325846061695 [2022-07-21 08:59:31,283 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 9761 transitions. [2022-07-21 08:59:31,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 9761 transitions. [2022-07-21 08:59:31,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:31,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 9761 transitions. [2022-07-21 08:59:31,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 184.16981132075472) internal successors, (9761), 53 states have internal predecessors, (9761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:31,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 252.0) internal successors, (13608), 54 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:31,314 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 252.0) internal successors, (13608), 54 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:31,314 INFO L186 Difference]: Start difference. First operand has 632 places, 602 transitions, 4198 flow. Second operand 53 states and 9761 transitions. [2022-07-21 08:59:31,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 684 places, 1357 transitions, 12752 flow [2022-07-21 08:59:31,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 673 places, 1357 transitions, 11282 flow, removed 283 selfloop flow, removed 11 redundant places. [2022-07-21 08:59:31,867 INFO L242 Difference]: Finished difference. Result has 693 places, 625 transitions, 4451 flow [2022-07-21 08:59:31,868 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=4451, PETRI_PLACES=693, PETRI_TRANSITIONS=625} [2022-07-21 08:59:31,868 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 464 predicate places. [2022-07-21 08:59:31,869 INFO L495 AbstractCegarLoop]: Abstraction has has 693 places, 625 transitions, 4451 flow [2022-07-21 08:59:31,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:31,870 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:31,870 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:31,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-21 08:59:31,870 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:31,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:31,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1852996547, now seen corresponding path program 6 times [2022-07-21 08:59:31,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:31,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41276446] [2022-07-21 08:59:31,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:31,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:32,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:32,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:32,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41276446] [2022-07-21 08:59:32,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41276446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:32,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:32,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-21 08:59:32,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185617734] [2022-07-21 08:59:32,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:32,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-21 08:59:32,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:32,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-21 08:59:32,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-21 08:59:32,310 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-21 08:59:32,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 693 places, 625 transitions, 4451 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:32,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:32,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-21 08:59:32,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:42,699 INFO L129 PetriNetUnfolder]: 4330/24467 cut-off events. [2022-07-21 08:59:42,699 INFO L130 PetriNetUnfolder]: For 76056/76226 co-relation queries the response was YES. [2022-07-21 08:59:43,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62513 conditions, 24467 events. 4330/24467 cut-off events. For 76056/76226 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 308246 event pairs, 2555 based on Foata normal form. 25/23615 useless extension candidates. Maximal degree in co-relation 62304. Up to 4853 conditions per place. [2022-07-21 08:59:43,655 INFO L132 encePairwiseOnDemand]: 214/252 looper letters, 788 selfloop transitions, 133 changer transitions 0/1076 dead transitions. [2022-07-21 08:59:43,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 735 places, 1076 transitions, 10622 flow [2022-07-21 08:59:43,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-21 08:59:43,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-07-21 08:59:43,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 7843 transitions. [2022-07-21 08:59:43,664 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7237910668143226 [2022-07-21 08:59:43,664 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 7843 transitions. [2022-07-21 08:59:43,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 7843 transitions. [2022-07-21 08:59:43,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:43,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 7843 transitions. [2022-07-21 08:59:43,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 182.3953488372093) internal successors, (7843), 43 states have internal predecessors, (7843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:43,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 252.0) internal successors, (11088), 44 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:43,687 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 252.0) internal successors, (11088), 44 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:43,687 INFO L186 Difference]: Start difference. First operand has 693 places, 625 transitions, 4451 flow. Second operand 43 states and 7843 transitions. [2022-07-21 08:59:43,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 735 places, 1076 transitions, 10622 flow [2022-07-21 08:59:44,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 703 places, 1076 transitions, 9683 flow, removed 85 selfloop flow, removed 32 redundant places. [2022-07-21 08:59:44,236 INFO L242 Difference]: Finished difference. Result has 739 places, 707 transitions, 5075 flow [2022-07-21 08:59:44,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=3819, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=5075, PETRI_PLACES=739, PETRI_TRANSITIONS=707} [2022-07-21 08:59:44,237 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 510 predicate places. [2022-07-21 08:59:44,238 INFO L495 AbstractCegarLoop]: Abstraction has has 739 places, 707 transitions, 5075 flow [2022-07-21 08:59:44,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:44,239 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:44,239 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:44,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-21 08:59:44,239 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:44,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:44,239 INFO L85 PathProgramCache]: Analyzing trace with hash -623103677, now seen corresponding path program 7 times [2022-07-21 08:59:44,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:44,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935529038] [2022-07-21 08:59:44,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:44,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:44,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:44,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:44,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935529038] [2022-07-21 08:59:44,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935529038] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:44,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:44,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-21 08:59:44,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398831751] [2022-07-21 08:59:44,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:44,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-21 08:59:44,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:44,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-21 08:59:44,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-21 08:59:44,611 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-21 08:59:44,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 739 places, 707 transitions, 5075 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:44,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:44,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-21 08:59:44,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand