./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-node-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:24:36,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:24:36,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:24:36,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:24:36,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:24:36,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:24:36,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:24:36,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:24:36,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:24:36,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:24:36,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:24:36,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:24:36,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:24:36,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:24:36,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:24:36,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:24:36,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:24:36,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:24:36,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:24:36,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:24:36,057 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:24:36,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:24:36,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:24:36,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:24:36,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:24:36,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:24:36,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:24:36,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:24:36,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:24:36,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:24:36,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:24:36,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:24:36,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:24:36,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:24:36,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:24:36,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:24:36,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:24:36,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:24:36,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:24:36,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:24:36,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:24:36,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:24:36,074 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:24:36,096 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:24:36,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:24:36,098 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:24:36,098 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:24:36,099 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:24:36,099 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:24:36,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:24:36,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:24:36,100 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:24:36,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:24:36,100 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:24:36,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:24:36,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:24:36,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:24:36,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:24:36,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:24:36,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:24:36,101 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:24:36,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:24:36,102 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:24:36,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:24:36,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:24:36,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:24:36,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:24:36,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:24:36,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:24:36,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:24:36,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:24:36,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:24:36,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:24:36,104 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:24:36,104 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:24:36,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:24:36,105 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2022-07-12 10:24:36,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:24:36,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:24:36,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:24:36,304 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:24:36,304 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:24:36,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-07-12 10:24:36,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e501fa0d/ce634d5b0dba4373ba6ba108b79f4506/FLAG15a99f9c3 [2022-07-12 10:24:36,692 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:24:36,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-07-12 10:24:36,699 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e501fa0d/ce634d5b0dba4373ba6ba108b79f4506/FLAG15a99f9c3 [2022-07-12 10:24:37,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e501fa0d/ce634d5b0dba4373ba6ba108b79f4506 [2022-07-12 10:24:37,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:24:37,095 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:24:37,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:24:37,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:24:37,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:24:37,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:24:37" (1/1) ... [2022-07-12 10:24:37,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f4cb505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:37, skipping insertion in model container [2022-07-12 10:24:37,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:24:37" (1/1) ... [2022-07-12 10:24:37,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:24:37,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:24:37,320 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-07-12 10:24:37,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:24:37,345 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:24:37,376 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-07-12 10:24:37,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:24:37,388 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:24:37,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:37 WrapperNode [2022-07-12 10:24:37,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:24:37,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:24:37,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:24:37,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:24:37,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:37" (1/1) ... [2022-07-12 10:24:37,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:37" (1/1) ... [2022-07-12 10:24:37,465 INFO L137 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 437 [2022-07-12 10:24:37,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:24:37,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:24:37,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:24:37,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:24:37,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:37" (1/1) ... [2022-07-12 10:24:37,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:37" (1/1) ... [2022-07-12 10:24:37,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:37" (1/1) ... [2022-07-12 10:24:37,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:37" (1/1) ... [2022-07-12 10:24:37,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:37" (1/1) ... [2022-07-12 10:24:37,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:37" (1/1) ... [2022-07-12 10:24:37,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:37" (1/1) ... [2022-07-12 10:24:37,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:24:37,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:24:37,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:24:37,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:24:37,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:37" (1/1) ... [2022-07-12 10:24:37,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:24:37,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:24:37,540 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) [2022-07-12 10:24:37,575 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 [2022-07-12 10:24:37,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:24:37,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:24:37,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:24:37,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:24:37,589 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:24:37,589 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:24:37,589 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:24:37,589 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:24:37,589 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:24:37,589 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:24:37,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:24:37,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:24:37,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:24:37,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:24:37,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:24:37,591 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:24:37,696 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:24:37,698 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:24:38,045 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:24:38,053 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:24:38,054 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-12 10:24:38,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:24:38 BoogieIcfgContainer [2022-07-12 10:24:38,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:24:38,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:24:38,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:24:38,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:24:38,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:24:37" (1/3) ... [2022-07-12 10:24:38,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411de852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:24:38, skipping insertion in model container [2022-07-12 10:24:38,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:37" (2/3) ... [2022-07-12 10:24:38,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411de852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:24:38, skipping insertion in model container [2022-07-12 10:24:38,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:24:38" (3/3) ... [2022-07-12 10:24:38,061 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2022-07-12 10:24:38,064 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:24:38,069 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:24:38,070 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:24:38,070 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:24:38,149 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-12 10:24:38,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 537 places, 574 transitions, 1172 flow [2022-07-12 10:24:38,320 INFO L129 PetriNetUnfolder]: 47/571 cut-off events. [2022-07-12 10:24:38,320 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:24:38,327 INFO L84 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 571 events. 47/571 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 848 event pairs, 0 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 479. Up to 2 conditions per place. [2022-07-12 10:24:38,327 INFO L82 GeneralOperation]: Start removeDead. Operand has 537 places, 574 transitions, 1172 flow [2022-07-12 10:24:38,335 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 523 places, 560 transitions, 1138 flow [2022-07-12 10:24:38,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:24:38,352 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@27138a30, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2fb193e3 [2022-07-12 10:24:38,352 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 10:24:38,431 INFO L129 PetriNetUnfolder]: 47/559 cut-off events. [2022-07-12 10:24:38,431 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:24:38,431 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:38,432 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:38,433 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:38,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:38,436 INFO L85 PathProgramCache]: Analyzing trace with hash 2022928042, now seen corresponding path program 1 times [2022-07-12 10:24:38,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:38,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934100689] [2022-07-12 10:24:38,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:38,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:38,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:38,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:38,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934100689] [2022-07-12 10:24:38,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934100689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:38,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:38,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:24:38,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333747916] [2022-07-12 10:24:38,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:38,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 10:24:38,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:38,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 10:24:38,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 10:24:38,781 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 538 out of 574 [2022-07-12 10:24:38,786 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 560 transitions, 1138 flow. Second operand has 2 states, 2 states have (on average 543.0) internal successors, (1086), 2 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:38,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:38,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 538 of 574 [2022-07-12 10:24:38,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:38,886 INFO L129 PetriNetUnfolder]: 18/531 cut-off events. [2022-07-12 10:24:38,887 INFO L130 PetriNetUnfolder]: For 14/16 co-relation queries the response was YES. [2022-07-12 10:24:38,890 INFO L84 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 531 events. 18/531 cut-off events. For 14/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 825 event pairs, 0 based on Foata normal form. 34/524 useless extension candidates. Maximal degree in co-relation 455. Up to 7 conditions per place. [2022-07-12 10:24:38,891 INFO L132 encePairwiseOnDemand]: 545/574 looper letters, 6 selfloop transitions, 0 changer transitions 17/531 dead transitions. [2022-07-12 10:24:38,892 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 531 transitions, 1092 flow [2022-07-12 10:24:38,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 10:24:38,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-12 10:24:38,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1111 transitions. [2022-07-12 10:24:38,908 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9677700348432056 [2022-07-12 10:24:38,909 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1111 transitions. [2022-07-12 10:24:38,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1111 transitions. [2022-07-12 10:24:38,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:38,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1111 transitions. [2022-07-12 10:24:38,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 555.5) internal successors, (1111), 2 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:38,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 574.0) internal successors, (1722), 3 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:38,926 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 574.0) internal successors, (1722), 3 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:38,927 INFO L186 Difference]: Start difference. First operand has 523 places, 560 transitions, 1138 flow. Second operand 2 states and 1111 transitions. [2022-07-12 10:24:38,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 531 transitions, 1092 flow [2022-07-12 10:24:38,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 531 transitions, 1080 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-12 10:24:38,943 INFO L242 Difference]: Finished difference. Result has 518 places, 514 transitions, 1034 flow [2022-07-12 10:24:38,945 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1034, PETRI_PLACES=518, PETRI_TRANSITIONS=514} [2022-07-12 10:24:38,948 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -5 predicate places. [2022-07-12 10:24:38,948 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 514 transitions, 1034 flow [2022-07-12 10:24:38,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 543.0) internal successors, (1086), 2 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:38,949 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:38,950 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:38,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:24:38,950 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:38,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:38,951 INFO L85 PathProgramCache]: Analyzing trace with hash -735916760, now seen corresponding path program 1 times [2022-07-12 10:24:38,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:38,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296783921] [2022-07-12 10:24:38,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:38,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:39,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:39,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:39,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296783921] [2022-07-12 10:24:39,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296783921] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:39,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:39,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:24:39,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934821615] [2022-07-12 10:24:39,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:39,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:24:39,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:39,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:24:39,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:24:39,190 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 531 out of 574 [2022-07-12 10:24:39,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 514 transitions, 1034 flow. Second operand has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:39,195 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 531 of 574 [2022-07-12 10:24:39,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:39,353 INFO L129 PetriNetUnfolder]: 44/720 cut-off events. [2022-07-12 10:24:39,353 INFO L130 PetriNetUnfolder]: For 10/33 co-relation queries the response was YES. [2022-07-12 10:24:39,358 INFO L84 FinitePrefix]: Finished finitePrefix Result has 780 conditions, 720 events. 44/720 cut-off events. For 10/33 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2195 event pairs, 10 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 777. Up to 35 conditions per place. [2022-07-12 10:24:39,360 INFO L132 encePairwiseOnDemand]: 570/574 looper letters, 14 selfloop transitions, 3 changer transitions 0/518 dead transitions. [2022-07-12 10:24:39,361 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 518 transitions, 1078 flow [2022-07-12 10:24:39,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:24:39,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:24:39,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1611 transitions. [2022-07-12 10:24:39,364 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9355400696864111 [2022-07-12 10:24:39,364 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1611 transitions. [2022-07-12 10:24:39,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1611 transitions. [2022-07-12 10:24:39,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:39,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1611 transitions. [2022-07-12 10:24:39,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 537.0) internal successors, (1611), 3 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,371 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,371 INFO L186 Difference]: Start difference. First operand has 518 places, 514 transitions, 1034 flow. Second operand 3 states and 1611 transitions. [2022-07-12 10:24:39,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 518 transitions, 1078 flow [2022-07-12 10:24:39,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 518 transitions, 1078 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:24:39,378 INFO L242 Difference]: Finished difference. Result has 505 places, 516 transitions, 1056 flow [2022-07-12 10:24:39,379 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1056, PETRI_PLACES=505, PETRI_TRANSITIONS=516} [2022-07-12 10:24:39,380 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -18 predicate places. [2022-07-12 10:24:39,380 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 516 transitions, 1056 flow [2022-07-12 10:24:39,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,381 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:39,381 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:39,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:24:39,382 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:39,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:39,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1470072086, now seen corresponding path program 1 times [2022-07-12 10:24:39,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:39,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307768680] [2022-07-12 10:24:39,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:39,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:39,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:39,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:39,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307768680] [2022-07-12 10:24:39,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307768680] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:39,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:39,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:24:39,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20077821] [2022-07-12 10:24:39,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:39,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:24:39,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:39,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:24:39,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:24:39,529 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 531 out of 574 [2022-07-12 10:24:39,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 516 transitions, 1056 flow. Second operand has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:39,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 531 of 574 [2022-07-12 10:24:39,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:39,670 INFO L129 PetriNetUnfolder]: 48/795 cut-off events. [2022-07-12 10:24:39,671 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-07-12 10:24:39,676 INFO L84 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 795 events. 48/795 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2861 event pairs, 10 based on Foata normal form. 0/746 useless extension candidates. Maximal degree in co-relation 877. Up to 35 conditions per place. [2022-07-12 10:24:39,678 INFO L132 encePairwiseOnDemand]: 570/574 looper letters, 14 selfloop transitions, 3 changer transitions 0/520 dead transitions. [2022-07-12 10:24:39,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 520 transitions, 1100 flow [2022-07-12 10:24:39,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:24:39,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:24:39,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1611 transitions. [2022-07-12 10:24:39,682 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9355400696864111 [2022-07-12 10:24:39,683 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1611 transitions. [2022-07-12 10:24:39,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1611 transitions. [2022-07-12 10:24:39,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:39,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1611 transitions. [2022-07-12 10:24:39,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 537.0) internal successors, (1611), 3 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,690 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,691 INFO L186 Difference]: Start difference. First operand has 505 places, 516 transitions, 1056 flow. Second operand 3 states and 1611 transitions. [2022-07-12 10:24:39,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 520 transitions, 1100 flow [2022-07-12 10:24:39,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 520 transitions, 1094 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:24:39,698 INFO L242 Difference]: Finished difference. Result has 507 places, 518 transitions, 1072 flow [2022-07-12 10:24:39,698 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1072, PETRI_PLACES=507, PETRI_TRANSITIONS=518} [2022-07-12 10:24:39,700 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -16 predicate places. [2022-07-12 10:24:39,700 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 518 transitions, 1072 flow [2022-07-12 10:24:39,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,701 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:39,701 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:39,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:24:39,702 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:39,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:39,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1154364988, now seen corresponding path program 1 times [2022-07-12 10:24:39,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:39,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467002022] [2022-07-12 10:24:39,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:39,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:39,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:39,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:39,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467002022] [2022-07-12 10:24:39,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467002022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:39,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:39,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:24:39,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905320373] [2022-07-12 10:24:39,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:39,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:24:39,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:39,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:24:39,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:24:39,801 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 531 out of 574 [2022-07-12 10:24:39,803 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 518 transitions, 1072 flow. Second operand has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:39,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 531 of 574 [2022-07-12 10:24:39,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:39,891 INFO L129 PetriNetUnfolder]: 40/663 cut-off events. [2022-07-12 10:24:39,892 INFO L130 PetriNetUnfolder]: For 20/22 co-relation queries the response was YES. [2022-07-12 10:24:39,896 INFO L84 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 663 events. 40/663 cut-off events. For 20/22 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1655 event pairs, 10 based on Foata normal form. 0/625 useless extension candidates. Maximal degree in co-relation 728. Up to 35 conditions per place. [2022-07-12 10:24:39,898 INFO L132 encePairwiseOnDemand]: 570/574 looper letters, 14 selfloop transitions, 3 changer transitions 0/522 dead transitions. [2022-07-12 10:24:39,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 522 transitions, 1116 flow [2022-07-12 10:24:39,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:24:39,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:24:39,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1611 transitions. [2022-07-12 10:24:39,901 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9355400696864111 [2022-07-12 10:24:39,901 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1611 transitions. [2022-07-12 10:24:39,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1611 transitions. [2022-07-12 10:24:39,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:39,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1611 transitions. [2022-07-12 10:24:39,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 537.0) internal successors, (1611), 3 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,911 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,911 INFO L186 Difference]: Start difference. First operand has 507 places, 518 transitions, 1072 flow. Second operand 3 states and 1611 transitions. [2022-07-12 10:24:39,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 522 transitions, 1116 flow [2022-07-12 10:24:39,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 522 transitions, 1110 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:24:39,918 INFO L242 Difference]: Finished difference. Result has 509 places, 520 transitions, 1088 flow [2022-07-12 10:24:39,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1088, PETRI_PLACES=509, PETRI_TRANSITIONS=520} [2022-07-12 10:24:39,920 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -14 predicate places. [2022-07-12 10:24:39,921 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 520 transitions, 1088 flow [2022-07-12 10:24:39,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,922 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:39,922 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:39,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:24:39,922 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:39,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:39,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1945453358, now seen corresponding path program 1 times [2022-07-12 10:24:39,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:39,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633472716] [2022-07-12 10:24:39,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:39,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:40,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:40,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:40,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633472716] [2022-07-12 10:24:40,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633472716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:40,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:40,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:24:40,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676071406] [2022-07-12 10:24:40,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:40,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:24:40,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:40,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:24:40,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:24:40,146 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 574 [2022-07-12 10:24:40,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 520 transitions, 1088 flow. Second operand has 8 states, 8 states have (on average 426.375) internal successors, (3411), 8 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:40,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:40,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 574 [2022-07-12 10:24:40,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:40,422 INFO L129 PetriNetUnfolder]: 97/1244 cut-off events. [2022-07-12 10:24:40,422 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-07-12 10:24:40,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1539 conditions, 1244 events. 97/1244 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6392 event pairs, 39 based on Foata normal form. 0/1163 useless extension candidates. Maximal degree in co-relation 1532. Up to 159 conditions per place. [2022-07-12 10:24:40,436 INFO L132 encePairwiseOnDemand]: 562/574 looper letters, 106 selfloop transitions, 11 changer transitions 0/524 dead transitions. [2022-07-12 10:24:40,436 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 524 transitions, 1330 flow [2022-07-12 10:24:40,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:24:40,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:24:40,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3844 transitions. [2022-07-12 10:24:40,442 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7440960123886953 [2022-07-12 10:24:40,442 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3844 transitions. [2022-07-12 10:24:40,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3844 transitions. [2022-07-12 10:24:40,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:40,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3844 transitions. [2022-07-12 10:24:40,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 427.1111111111111) internal successors, (3844), 9 states have internal predecessors, (3844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:40,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:40,459 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:40,459 INFO L186 Difference]: Start difference. First operand has 509 places, 520 transitions, 1088 flow. Second operand 9 states and 3844 transitions. [2022-07-12 10:24:40,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 524 transitions, 1330 flow [2022-07-12 10:24:40,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 524 transitions, 1324 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:24:40,467 INFO L242 Difference]: Finished difference. Result has 516 places, 521 transitions, 1112 flow [2022-07-12 10:24:40,468 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1082, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1112, PETRI_PLACES=516, PETRI_TRANSITIONS=521} [2022-07-12 10:24:40,470 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -7 predicate places. [2022-07-12 10:24:40,470 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 521 transitions, 1112 flow [2022-07-12 10:24:40,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 426.375) internal successors, (3411), 8 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:40,471 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:40,471 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:40,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:24:40,472 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:40,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:40,473 INFO L85 PathProgramCache]: Analyzing trace with hash -23497976, now seen corresponding path program 1 times [2022-07-12 10:24:40,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:40,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348018680] [2022-07-12 10:24:40,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:40,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:40,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:40,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:40,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348018680] [2022-07-12 10:24:40,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348018680] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:24:40,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659060017] [2022-07-12 10:24:40,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:40,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:24:40,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:24:40,634 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:24:40,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:24:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:40,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:24:40,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:24:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:41,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:24:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:41,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659060017] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 10:24:41,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:24:41,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-07-12 10:24:41,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190666762] [2022-07-12 10:24:41,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:41,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:24:41,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:41,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:24:41,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-12 10:24:41,190 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 459 out of 574 [2022-07-12 10:24:41,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 521 transitions, 1112 flow. Second operand has 9 states, 9 states have (on average 466.0) internal successors, (4194), 9 states have internal predecessors, (4194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:41,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:41,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 459 of 574 [2022-07-12 10:24:41,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:41,492 INFO L129 PetriNetUnfolder]: 97/1245 cut-off events. [2022-07-12 10:24:41,492 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-12 10:24:41,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 1245 events. 97/1245 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6378 event pairs, 39 based on Foata normal form. 0/1164 useless extension candidates. Maximal degree in co-relation 1517. Up to 130 conditions per place. [2022-07-12 10:24:41,506 INFO L132 encePairwiseOnDemand]: 556/574 looper letters, 71 selfloop transitions, 17 changer transitions 0/523 dead transitions. [2022-07-12 10:24:41,506 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 523 transitions, 1292 flow [2022-07-12 10:24:41,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:24:41,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:24:41,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5137 transitions. [2022-07-12 10:24:41,514 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.813588850174216 [2022-07-12 10:24:41,514 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5137 transitions. [2022-07-12 10:24:41,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5137 transitions. [2022-07-12 10:24:41,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:41,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5137 transitions. [2022-07-12 10:24:41,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 467.0) internal successors, (5137), 11 states have internal predecessors, (5137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:41,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 574.0) internal successors, (6888), 12 states have internal predecessors, (6888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:41,531 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 574.0) internal successors, (6888), 12 states have internal predecessors, (6888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:41,531 INFO L186 Difference]: Start difference. First operand has 516 places, 521 transitions, 1112 flow. Second operand 11 states and 5137 transitions. [2022-07-12 10:24:41,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 523 transitions, 1292 flow [2022-07-12 10:24:41,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 523 transitions, 1272 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-07-12 10:24:41,538 INFO L242 Difference]: Finished difference. Result has 522 places, 523 transitions, 1146 flow [2022-07-12 10:24:41,539 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1146, PETRI_PLACES=522, PETRI_TRANSITIONS=523} [2022-07-12 10:24:41,540 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -1 predicate places. [2022-07-12 10:24:41,540 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 523 transitions, 1146 flow [2022-07-12 10:24:41,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 466.0) internal successors, (4194), 9 states have internal predecessors, (4194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:41,541 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:41,541 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:41,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 10:24:41,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-12 10:24:41,760 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:41,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:41,760 INFO L85 PathProgramCache]: Analyzing trace with hash -317225092, now seen corresponding path program 1 times [2022-07-12 10:24:41,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:41,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602174599] [2022-07-12 10:24:41,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:41,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:41,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:24:41,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:41,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602174599] [2022-07-12 10:24:41,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602174599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:41,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:41,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:24:41,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434492529] [2022-07-12 10:24:41,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:41,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:24:41,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:41,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:24:41,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:24:41,935 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 574 [2022-07-12 10:24:41,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 523 transitions, 1146 flow. Second operand has 8 states, 8 states have (on average 426.875) internal successors, (3415), 8 states have internal predecessors, (3415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:41,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:41,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 574 [2022-07-12 10:24:41,938 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:42,149 INFO L129 PetriNetUnfolder]: 67/1026 cut-off events. [2022-07-12 10:24:42,149 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-07-12 10:24:42,158 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1298 conditions, 1026 events. 67/1026 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3991 event pairs, 21 based on Foata normal form. 0/966 useless extension candidates. Maximal degree in co-relation 1287. Up to 136 conditions per place. [2022-07-12 10:24:42,162 INFO L132 encePairwiseOnDemand]: 562/574 looper letters, 108 selfloop transitions, 11 changer transitions 0/527 dead transitions. [2022-07-12 10:24:42,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 527 transitions, 1392 flow [2022-07-12 10:24:42,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:24:42,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:24:42,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3844 transitions. [2022-07-12 10:24:42,168 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7440960123886953 [2022-07-12 10:24:42,168 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3844 transitions. [2022-07-12 10:24:42,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3844 transitions. [2022-07-12 10:24:42,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:42,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3844 transitions. [2022-07-12 10:24:42,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 427.1111111111111) internal successors, (3844), 9 states have internal predecessors, (3844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:42,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:42,180 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:42,180 INFO L186 Difference]: Start difference. First operand has 522 places, 523 transitions, 1146 flow. Second operand 9 states and 3844 transitions. [2022-07-12 10:24:42,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 527 transitions, 1392 flow [2022-07-12 10:24:42,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 527 transitions, 1365 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-12 10:24:42,188 INFO L242 Difference]: Finished difference. Result has 523 places, 524 transitions, 1149 flow [2022-07-12 10:24:42,189 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1149, PETRI_PLACES=523, PETRI_TRANSITIONS=524} [2022-07-12 10:24:42,189 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 0 predicate places. [2022-07-12 10:24:42,189 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 524 transitions, 1149 flow [2022-07-12 10:24:42,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 426.875) internal successors, (3415), 8 states have internal predecessors, (3415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:42,190 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:42,191 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:42,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:24:42,191 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:42,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:42,191 INFO L85 PathProgramCache]: Analyzing trace with hash 734939679, now seen corresponding path program 1 times [2022-07-12 10:24:42,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:42,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34460156] [2022-07-12 10:24:42,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:42,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:42,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:24:42,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:42,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34460156] [2022-07-12 10:24:42,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34460156] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:24:42,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724985183] [2022-07-12 10:24:42,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:42,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:24:42,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:24:42,305 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:24:42,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:24:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:42,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:24:42,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:24:42,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:24:42,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:24:42,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:24:42,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724985183] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 10:24:42,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:24:42,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-07-12 10:24:42,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024519101] [2022-07-12 10:24:42,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:42,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:24:42,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:42,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:24:42,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-12 10:24:42,772 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 459 out of 574 [2022-07-12 10:24:42,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 524 transitions, 1149 flow. Second operand has 9 states, 9 states have (on average 466.8888888888889) internal successors, (4202), 9 states have internal predecessors, (4202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:42,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:42,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 459 of 574 [2022-07-12 10:24:42,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:43,066 INFO L129 PetriNetUnfolder]: 67/1027 cut-off events. [2022-07-12 10:24:43,066 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-07-12 10:24:43,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1274 conditions, 1027 events. 67/1027 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3980 event pairs, 21 based on Foata normal form. 0/966 useless extension candidates. Maximal degree in co-relation 1262. Up to 91 conditions per place. [2022-07-12 10:24:43,076 INFO L132 encePairwiseOnDemand]: 554/574 looper letters, 71 selfloop transitions, 20 changer transitions 0/526 dead transitions. [2022-07-12 10:24:43,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 526 transitions, 1335 flow [2022-07-12 10:24:43,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:24:43,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:24:43,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 6055 transitions. [2022-07-12 10:24:43,085 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8114446529080676 [2022-07-12 10:24:43,085 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 6055 transitions. [2022-07-12 10:24:43,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 6055 transitions. [2022-07-12 10:24:43,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:43,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 6055 transitions. [2022-07-12 10:24:43,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 465.7692307692308) internal successors, (6055), 13 states have internal predecessors, (6055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:43,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 574.0) internal successors, (8036), 14 states have internal predecessors, (8036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:43,105 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 574.0) internal successors, (8036), 14 states have internal predecessors, (8036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:43,105 INFO L186 Difference]: Start difference. First operand has 523 places, 524 transitions, 1149 flow. Second operand 13 states and 6055 transitions. [2022-07-12 10:24:43,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 526 transitions, 1335 flow [2022-07-12 10:24:43,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 526 transitions, 1315 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-07-12 10:24:43,114 INFO L242 Difference]: Finished difference. Result has 531 places, 526 transitions, 1189 flow [2022-07-12 10:24:43,114 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1189, PETRI_PLACES=531, PETRI_TRANSITIONS=526} [2022-07-12 10:24:43,117 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 8 predicate places. [2022-07-12 10:24:43,117 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 526 transitions, 1189 flow [2022-07-12 10:24:43,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 466.8888888888889) internal successors, (4202), 9 states have internal predecessors, (4202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:43,118 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:43,118 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:43,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-12 10:24:43,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-12 10:24:43,351 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:43,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:43,352 INFO L85 PathProgramCache]: Analyzing trace with hash -2034615736, now seen corresponding path program 1 times [2022-07-12 10:24:43,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:43,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880159736] [2022-07-12 10:24:43,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:43,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:43,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 10:24:43,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:43,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880159736] [2022-07-12 10:24:43,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880159736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:43,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:43,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:24:43,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134468854] [2022-07-12 10:24:43,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:43,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:24:43,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:43,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:24:43,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:24:43,508 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 444 out of 574 [2022-07-12 10:24:43,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 526 transitions, 1189 flow. Second operand has 7 states, 7 states have (on average 455.57142857142856) internal successors, (3189), 7 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:43,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:43,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 444 of 574 [2022-07-12 10:24:43,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:43,818 INFO L129 PetriNetUnfolder]: 59/942 cut-off events. [2022-07-12 10:24:43,818 INFO L130 PetriNetUnfolder]: For 21/31 co-relation queries the response was YES. [2022-07-12 10:24:43,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1222 conditions, 942 events. 59/942 cut-off events. For 21/31 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3477 event pairs, 14 based on Foata normal form. 1/898 useless extension candidates. Maximal degree in co-relation 1207. Up to 112 conditions per place. [2022-07-12 10:24:43,829 INFO L132 encePairwiseOnDemand]: 566/574 looper letters, 94 selfloop transitions, 5 changer transitions 4/546 dead transitions. [2022-07-12 10:24:43,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 546 transitions, 1448 flow [2022-07-12 10:24:43,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:24:43,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:24:43,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4100 transitions. [2022-07-12 10:24:43,835 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7936507936507936 [2022-07-12 10:24:43,835 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4100 transitions. [2022-07-12 10:24:43,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4100 transitions. [2022-07-12 10:24:43,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:43,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4100 transitions. [2022-07-12 10:24:43,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 455.55555555555554) internal successors, (4100), 9 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:43,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:43,848 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:43,848 INFO L186 Difference]: Start difference. First operand has 531 places, 526 transitions, 1189 flow. Second operand 9 states and 4100 transitions. [2022-07-12 10:24:43,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 546 transitions, 1448 flow [2022-07-12 10:24:43,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 546 transitions, 1415 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-07-12 10:24:43,856 INFO L242 Difference]: Finished difference. Result has 536 places, 530 transitions, 1197 flow [2022-07-12 10:24:43,857 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1197, PETRI_PLACES=536, PETRI_TRANSITIONS=530} [2022-07-12 10:24:43,858 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 13 predicate places. [2022-07-12 10:24:43,858 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 530 transitions, 1197 flow [2022-07-12 10:24:43,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 455.57142857142856) internal successors, (3189), 7 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:43,859 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:43,859 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:43,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:24:43,860 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:43,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:43,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1765072472, now seen corresponding path program 1 times [2022-07-12 10:24:43,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:43,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406421454] [2022-07-12 10:24:43,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:43,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:44,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 10:24:44,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:44,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406421454] [2022-07-12 10:24:44,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406421454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:44,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:44,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:24:44,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240512575] [2022-07-12 10:24:44,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:44,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:24:44,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:44,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:24:44,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:24:44,008 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 574 [2022-07-12 10:24:44,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 530 transitions, 1197 flow. Second operand has 8 states, 8 states have (on average 427.375) internal successors, (3419), 8 states have internal predecessors, (3419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:44,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:44,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 574 [2022-07-12 10:24:44,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:44,314 INFO L129 PetriNetUnfolder]: 147/1661 cut-off events. [2022-07-12 10:24:44,314 INFO L130 PetriNetUnfolder]: For 60/70 co-relation queries the response was YES. [2022-07-12 10:24:44,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2093 conditions, 1661 events. 147/1661 cut-off events. For 60/70 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 9575 event pairs, 66 based on Foata normal form. 0/1527 useless extension candidates. Maximal degree in co-relation 2071. Up to 174 conditions per place. [2022-07-12 10:24:44,334 INFO L132 encePairwiseOnDemand]: 564/574 looper letters, 112 selfloop transitions, 9 changer transitions 0/534 dead transitions. [2022-07-12 10:24:44,334 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 534 transitions, 1447 flow [2022-07-12 10:24:44,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:24:44,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-12 10:24:44,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3430 transitions. [2022-07-12 10:24:44,339 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7469512195121951 [2022-07-12 10:24:44,339 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3430 transitions. [2022-07-12 10:24:44,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3430 transitions. [2022-07-12 10:24:44,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:44,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3430 transitions. [2022-07-12 10:24:44,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 428.75) internal successors, (3430), 8 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:44,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 574.0) internal successors, (5166), 9 states have internal predecessors, (5166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:44,352 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 574.0) internal successors, (5166), 9 states have internal predecessors, (5166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:44,352 INFO L186 Difference]: Start difference. First operand has 536 places, 530 transitions, 1197 flow. Second operand 8 states and 3430 transitions. [2022-07-12 10:24:44,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 534 transitions, 1447 flow [2022-07-12 10:24:44,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 534 transitions, 1442 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-12 10:24:44,361 INFO L242 Difference]: Finished difference. Result has 539 places, 531 transitions, 1218 flow [2022-07-12 10:24:44,362 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1218, PETRI_PLACES=539, PETRI_TRANSITIONS=531} [2022-07-12 10:24:44,362 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 16 predicate places. [2022-07-12 10:24:44,362 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 531 transitions, 1218 flow [2022-07-12 10:24:44,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 427.375) internal successors, (3419), 8 states have internal predecessors, (3419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:44,363 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:44,364 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:44,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:24:44,364 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:44,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:44,364 INFO L85 PathProgramCache]: Analyzing trace with hash 681701814, now seen corresponding path program 1 times [2022-07-12 10:24:44,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:44,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818918803] [2022-07-12 10:24:44,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:44,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:44,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 10:24:44,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:44,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818918803] [2022-07-12 10:24:44,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818918803] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:24:44,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702204490] [2022-07-12 10:24:44,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:44,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:24:44,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:24:44,489 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:24:44,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 10:24:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:44,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:24:44,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:24:44,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 10:24:44,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:24:44,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 10:24:44,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702204490] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 10:24:44,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:24:44,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-07-12 10:24:44,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391436093] [2022-07-12 10:24:44,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:44,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:24:44,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:44,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:24:44,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-12 10:24:44,952 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 459 out of 574 [2022-07-12 10:24:44,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 531 transitions, 1218 flow. Second operand has 9 states, 9 states have (on average 467.77777777777777) internal successors, (4210), 9 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:44,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:44,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 459 of 574 [2022-07-12 10:24:44,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:45,341 INFO L129 PetriNetUnfolder]: 147/1662 cut-off events. [2022-07-12 10:24:45,342 INFO L130 PetriNetUnfolder]: For 77/87 co-relation queries the response was YES. [2022-07-12 10:24:45,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2078 conditions, 1662 events. 147/1662 cut-off events. For 77/87 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 9556 event pairs, 66 based on Foata normal form. 0/1529 useless extension candidates. Maximal degree in co-relation 2057. Up to 134 conditions per place. [2022-07-12 10:24:45,354 INFO L132 encePairwiseOnDemand]: 554/574 looper letters, 73 selfloop transitions, 21 changer transitions 0/533 dead transitions. [2022-07-12 10:24:45,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 533 transitions, 1410 flow [2022-07-12 10:24:45,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:24:45,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-12 10:24:45,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 5596 transitions. [2022-07-12 10:24:45,361 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8124274099883856 [2022-07-12 10:24:45,361 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 5596 transitions. [2022-07-12 10:24:45,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 5596 transitions. [2022-07-12 10:24:45,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:45,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 5596 transitions. [2022-07-12 10:24:45,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 466.3333333333333) internal successors, (5596), 12 states have internal predecessors, (5596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:45,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 574.0) internal successors, (7462), 13 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:45,376 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 574.0) internal successors, (7462), 13 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:45,376 INFO L186 Difference]: Start difference. First operand has 539 places, 531 transitions, 1218 flow. Second operand 12 states and 5596 transitions. [2022-07-12 10:24:45,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 533 transitions, 1410 flow [2022-07-12 10:24:45,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 533 transitions, 1394 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-12 10:24:45,384 INFO L242 Difference]: Finished difference. Result has 547 places, 533 transitions, 1263 flow [2022-07-12 10:24:45,384 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1263, PETRI_PLACES=547, PETRI_TRANSITIONS=533} [2022-07-12 10:24:45,385 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 24 predicate places. [2022-07-12 10:24:45,385 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 533 transitions, 1263 flow [2022-07-12 10:24:45,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 467.77777777777777) internal successors, (4210), 9 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:45,386 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:45,386 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:45,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 10:24:45,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:24:45,604 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:45,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:45,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1167783152, now seen corresponding path program 1 times [2022-07-12 10:24:45,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:45,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952602706] [2022-07-12 10:24:45,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:45,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:45,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 10:24:45,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:45,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952602706] [2022-07-12 10:24:45,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952602706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:45,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:45,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:24:45,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160833645] [2022-07-12 10:24:45,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:45,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:24:45,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:45,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:24:45,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:24:45,826 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-12 10:24:45,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 533 transitions, 1263 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:45,828 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:45,828 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-12 10:24:45,828 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:46,479 INFO L129 PetriNetUnfolder]: 644/2573 cut-off events. [2022-07-12 10:24:46,480 INFO L130 PetriNetUnfolder]: For 312/333 co-relation queries the response was YES. [2022-07-12 10:24:46,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3902 conditions, 2573 events. 644/2573 cut-off events. For 312/333 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 20455 event pairs, 294 based on Foata normal form. 6/2393 useless extension candidates. Maximal degree in co-relation 3878. Up to 612 conditions per place. [2022-07-12 10:24:46,509 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 139 selfloop transitions, 30 changer transitions 24/634 dead transitions. [2022-07-12 10:24:46,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 634 transitions, 1888 flow [2022-07-12 10:24:46,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:24:46,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:24:46,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 10634 transitions. [2022-07-12 10:24:46,566 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7719221835075494 [2022-07-12 10:24:46,566 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 10634 transitions. [2022-07-12 10:24:46,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 10634 transitions. [2022-07-12 10:24:46,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:46,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 10634 transitions. [2022-07-12 10:24:46,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 443.0833333333333) internal successors, (10634), 24 states have internal predecessors, (10634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:46,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 574.0) internal successors, (14350), 25 states have internal predecessors, (14350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:46,595 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 574.0) internal successors, (14350), 25 states have internal predecessors, (14350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:46,595 INFO L186 Difference]: Start difference. First operand has 547 places, 533 transitions, 1263 flow. Second operand 24 states and 10634 transitions. [2022-07-12 10:24:46,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 634 transitions, 1888 flow [2022-07-12 10:24:46,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 634 transitions, 1852 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-07-12 10:24:46,603 INFO L242 Difference]: Finished difference. Result has 581 places, 562 transitions, 1443 flow [2022-07-12 10:24:46,604 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1227, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1443, PETRI_PLACES=581, PETRI_TRANSITIONS=562} [2022-07-12 10:24:46,604 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 58 predicate places. [2022-07-12 10:24:46,605 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 562 transitions, 1443 flow [2022-07-12 10:24:46,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:46,606 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:46,606 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:46,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 10:24:46,606 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:46,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:46,607 INFO L85 PathProgramCache]: Analyzing trace with hash -584080018, now seen corresponding path program 2 times [2022-07-12 10:24:46,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:46,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918521023] [2022-07-12 10:24:46,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:46,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:46,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 10:24:46,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:46,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918521023] [2022-07-12 10:24:46,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918521023] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:46,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:46,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:24:46,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117609440] [2022-07-12 10:24:46,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:46,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:24:46,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:46,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:24:46,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:24:46,782 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-12 10:24:46,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 562 transitions, 1443 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:46,785 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:46,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-12 10:24:46,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:47,747 INFO L129 PetriNetUnfolder]: 1010/3765 cut-off events. [2022-07-12 10:24:47,747 INFO L130 PetriNetUnfolder]: For 3440/3489 co-relation queries the response was YES. [2022-07-12 10:24:47,781 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7973 conditions, 3765 events. 1010/3765 cut-off events. For 3440/3489 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 35332 event pairs, 498 based on Foata normal form. 1/3470 useless extension candidates. Maximal degree in co-relation 7929. Up to 937 conditions per place. [2022-07-12 10:24:47,794 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 172 selfloop transitions, 45 changer transitions 22/680 dead transitions. [2022-07-12 10:24:47,794 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 680 transitions, 2468 flow [2022-07-12 10:24:47,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:24:47,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:24:47,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 10631 transitions. [2022-07-12 10:24:47,802 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7717044134727061 [2022-07-12 10:24:47,802 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 10631 transitions. [2022-07-12 10:24:47,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 10631 transitions. [2022-07-12 10:24:47,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:47,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 10631 transitions. [2022-07-12 10:24:47,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 442.9583333333333) internal successors, (10631), 24 states have internal predecessors, (10631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:47,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 574.0) internal successors, (14350), 25 states have internal predecessors, (14350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:47,825 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 574.0) internal successors, (14350), 25 states have internal predecessors, (14350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:47,825 INFO L186 Difference]: Start difference. First operand has 581 places, 562 transitions, 1443 flow. Second operand 24 states and 10631 transitions. [2022-07-12 10:24:47,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 680 transitions, 2468 flow [2022-07-12 10:24:47,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 680 transitions, 2458 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-07-12 10:24:47,846 INFO L242 Difference]: Finished difference. Result has 620 places, 591 transitions, 1853 flow [2022-07-12 10:24:47,847 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1853, PETRI_PLACES=620, PETRI_TRANSITIONS=591} [2022-07-12 10:24:47,848 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 97 predicate places. [2022-07-12 10:24:47,848 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 591 transitions, 1853 flow [2022-07-12 10:24:47,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:47,849 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:47,849 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:47,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 10:24:47,849 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:47,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:47,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1345030594, now seen corresponding path program 3 times [2022-07-12 10:24:47,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:47,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086466581] [2022-07-12 10:24:47,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:47,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:48,024 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 10:24:48,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:48,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086466581] [2022-07-12 10:24:48,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086466581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:48,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:48,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:24:48,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034265591] [2022-07-12 10:24:48,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:48,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:24:48,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:48,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:24:48,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:24:48,029 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-12 10:24:48,031 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 591 transitions, 1853 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:48,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:48,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-12 10:24:48,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:49,282 INFO L129 PetriNetUnfolder]: 1120/4338 cut-off events. [2022-07-12 10:24:49,283 INFO L130 PetriNetUnfolder]: For 9994/10027 co-relation queries the response was YES. [2022-07-12 10:24:49,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10951 conditions, 4338 events. 1120/4338 cut-off events. For 9994/10027 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 42657 event pairs, 590 based on Foata normal form. 5/4004 useless extension candidates. Maximal degree in co-relation 10888. Up to 1177 conditions per place. [2022-07-12 10:24:49,340 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 161 selfloop transitions, 56 changer transitions 20/678 dead transitions. [2022-07-12 10:24:49,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 678 transitions, 3057 flow [2022-07-12 10:24:49,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:24:49,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:24:49,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 9747 transitions. [2022-07-12 10:24:49,349 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7718561925879 [2022-07-12 10:24:49,349 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 9747 transitions. [2022-07-12 10:24:49,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 9747 transitions. [2022-07-12 10:24:49,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:49,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 9747 transitions. [2022-07-12 10:24:49,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 443.04545454545456) internal successors, (9747), 22 states have internal predecessors, (9747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:49,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 574.0) internal successors, (13202), 23 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:49,369 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 574.0) internal successors, (13202), 23 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:49,369 INFO L186 Difference]: Start difference. First operand has 620 places, 591 transitions, 1853 flow. Second operand 22 states and 9747 transitions. [2022-07-12 10:24:49,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 678 transitions, 3057 flow [2022-07-12 10:24:49,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 678 transitions, 2919 flow, removed 69 selfloop flow, removed 2 redundant places. [2022-07-12 10:24:49,408 INFO L242 Difference]: Finished difference. Result has 651 places, 621 transitions, 2326 flow [2022-07-12 10:24:49,409 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1765, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2326, PETRI_PLACES=651, PETRI_TRANSITIONS=621} [2022-07-12 10:24:49,409 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 128 predicate places. [2022-07-12 10:24:49,409 INFO L495 AbstractCegarLoop]: Abstraction has has 651 places, 621 transitions, 2326 flow [2022-07-12 10:24:49,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:49,410 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:49,411 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:49,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 10:24:49,411 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:49,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:49,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1665310844, now seen corresponding path program 4 times [2022-07-12 10:24:49,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:49,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942452400] [2022-07-12 10:24:49,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:49,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 10:24:49,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:49,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942452400] [2022-07-12 10:24:49,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942452400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:49,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:49,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:24:49,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708819370] [2022-07-12 10:24:49,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:49,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:24:49,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:49,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:24:49,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:24:49,569 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-12 10:24:49,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 621 transitions, 2326 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:49,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:49,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-12 10:24:49,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:50,891 INFO L129 PetriNetUnfolder]: 1273/4705 cut-off events. [2022-07-12 10:24:50,892 INFO L130 PetriNetUnfolder]: For 17970/18053 co-relation queries the response was YES. [2022-07-12 10:24:50,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13188 conditions, 4705 events. 1273/4705 cut-off events. For 17970/18053 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 47104 event pairs, 635 based on Foata normal form. 1/4336 useless extension candidates. Maximal degree in co-relation 13112. Up to 1186 conditions per place. [2022-07-12 10:24:50,959 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 179 selfloop transitions, 61 changer transitions 18/699 dead transitions. [2022-07-12 10:24:50,959 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 699 transitions, 3682 flow [2022-07-12 10:24:50,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:24:50,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:24:50,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 8871 transitions. [2022-07-12 10:24:50,965 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7727351916376307 [2022-07-12 10:24:50,965 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 8871 transitions. [2022-07-12 10:24:50,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 8871 transitions. [2022-07-12 10:24:50,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:50,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 8871 transitions. [2022-07-12 10:24:50,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 443.55) internal successors, (8871), 20 states have internal predecessors, (8871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:50,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 574.0) internal successors, (12054), 21 states have internal predecessors, (12054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:50,980 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 574.0) internal successors, (12054), 21 states have internal predecessors, (12054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:50,980 INFO L186 Difference]: Start difference. First operand has 651 places, 621 transitions, 2326 flow. Second operand 20 states and 8871 transitions. [2022-07-12 10:24:50,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 699 transitions, 3682 flow [2022-07-12 10:24:51,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 699 transitions, 3460 flow, removed 111 selfloop flow, removed 2 redundant places. [2022-07-12 10:24:51,116 INFO L242 Difference]: Finished difference. Result has 681 places, 653 transitions, 2844 flow [2022-07-12 10:24:51,118 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=2144, PETRI_DIFFERENCE_MINUEND_PLACES=647, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2844, PETRI_PLACES=681, PETRI_TRANSITIONS=653} [2022-07-12 10:24:51,118 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 158 predicate places. [2022-07-12 10:24:51,118 INFO L495 AbstractCegarLoop]: Abstraction has has 681 places, 653 transitions, 2844 flow [2022-07-12 10:24:51,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:51,119 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:51,120 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:51,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 10:24:51,120 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:51,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:51,120 INFO L85 PathProgramCache]: Analyzing trace with hash 781660482, now seen corresponding path program 5 times [2022-07-12 10:24:51,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:51,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797454732] [2022-07-12 10:24:51,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:51,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:51,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 10:24:51,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:51,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797454732] [2022-07-12 10:24:51,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797454732] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:51,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:51,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:24:51,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634319699] [2022-07-12 10:24:51,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:51,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:24:51,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:51,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:24:51,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:24:51,338 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-12 10:24:51,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 653 transitions, 2844 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:51,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:51,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-12 10:24:51,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:52,931 INFO L129 PetriNetUnfolder]: 1312/5119 cut-off events. [2022-07-12 10:24:52,932 INFO L130 PetriNetUnfolder]: For 27053/27110 co-relation queries the response was YES. [2022-07-12 10:24:52,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15073 conditions, 5119 events. 1312/5119 cut-off events. For 27053/27110 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 53418 event pairs, 736 based on Foata normal form. 19/4743 useless extension candidates. Maximal degree in co-relation 14983. Up to 1361 conditions per place. [2022-07-12 10:24:53,008 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 198 selfloop transitions, 78 changer transitions 15/732 dead transitions. [2022-07-12 10:24:53,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 732 transitions, 4359 flow [2022-07-12 10:24:53,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:24:53,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:24:53,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 8867 transitions. [2022-07-12 10:24:53,014 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7723867595818815 [2022-07-12 10:24:53,014 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 8867 transitions. [2022-07-12 10:24:53,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 8867 transitions. [2022-07-12 10:24:53,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:53,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 8867 transitions. [2022-07-12 10:24:53,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 443.35) internal successors, (8867), 20 states have internal predecessors, (8867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:53,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 574.0) internal successors, (12054), 21 states have internal predecessors, (12054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:53,028 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 574.0) internal successors, (12054), 21 states have internal predecessors, (12054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:53,028 INFO L186 Difference]: Start difference. First operand has 681 places, 653 transitions, 2844 flow. Second operand 20 states and 8867 transitions. [2022-07-12 10:24:53,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 698 places, 732 transitions, 4359 flow [2022-07-12 10:24:53,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 696 places, 732 transitions, 4003 flow, removed 178 selfloop flow, removed 2 redundant places. [2022-07-12 10:24:53,135 INFO L242 Difference]: Finished difference. Result has 711 places, 684 transitions, 3381 flow [2022-07-12 10:24:53,136 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=2618, PETRI_DIFFERENCE_MINUEND_PLACES=677, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3381, PETRI_PLACES=711, PETRI_TRANSITIONS=684} [2022-07-12 10:24:53,136 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 188 predicate places. [2022-07-12 10:24:53,137 INFO L495 AbstractCegarLoop]: Abstraction has has 711 places, 684 transitions, 3381 flow [2022-07-12 10:24:53,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:53,137 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:53,137 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:53,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 10:24:53,138 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:53,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:53,138 INFO L85 PathProgramCache]: Analyzing trace with hash -316243756, now seen corresponding path program 6 times [2022-07-12 10:24:53,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:53,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28729592] [2022-07-12 10:24:53,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:53,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 10:24:53,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:53,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28729592] [2022-07-12 10:24:53,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28729592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:53,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:53,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:24:53,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647654939] [2022-07-12 10:24:53,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:53,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:24:53,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:53,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:24:53,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:24:53,380 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-12 10:24:53,382 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 684 transitions, 3381 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:53,382 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:53,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-12 10:24:53,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:55,074 INFO L129 PetriNetUnfolder]: 1343/5300 cut-off events. [2022-07-12 10:24:55,079 INFO L130 PetriNetUnfolder]: For 30062/30137 co-relation queries the response was YES. [2022-07-12 10:24:55,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15952 conditions, 5300 events. 1343/5300 cut-off events. For 30062/30137 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 56504 event pairs, 674 based on Foata normal form. 20/4915 useless extension candidates. Maximal degree in co-relation 15848. Up to 1375 conditions per place. [2022-07-12 10:24:55,151 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 200 selfloop transitions, 96 changer transitions 13/750 dead transitions. [2022-07-12 10:24:55,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 750 transitions, 4804 flow [2022-07-12 10:24:55,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:24:55,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:24:55,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7991 transitions. [2022-07-12 10:24:55,155 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7734223770809137 [2022-07-12 10:24:55,156 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7991 transitions. [2022-07-12 10:24:55,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7991 transitions. [2022-07-12 10:24:55,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:55,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7991 transitions. [2022-07-12 10:24:55,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 443.94444444444446) internal successors, (7991), 18 states have internal predecessors, (7991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:55,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:55,168 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:55,168 INFO L186 Difference]: Start difference. First operand has 711 places, 684 transitions, 3381 flow. Second operand 18 states and 7991 transitions. [2022-07-12 10:24:55,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 750 transitions, 4804 flow [2022-07-12 10:24:55,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 724 places, 750 transitions, 4408 flow, removed 198 selfloop flow, removed 2 redundant places. [2022-07-12 10:24:55,278 INFO L242 Difference]: Finished difference. Result has 732 places, 705 transitions, 3756 flow [2022-07-12 10:24:55,279 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=3179, PETRI_DIFFERENCE_MINUEND_PLACES=707, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3756, PETRI_PLACES=732, PETRI_TRANSITIONS=705} [2022-07-12 10:24:55,279 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 209 predicate places. [2022-07-12 10:24:55,279 INFO L495 AbstractCegarLoop]: Abstraction has has 732 places, 705 transitions, 3756 flow [2022-07-12 10:24:55,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:55,280 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:55,280 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:55,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 10:24:55,281 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:55,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:55,281 INFO L85 PathProgramCache]: Analyzing trace with hash 211709358, now seen corresponding path program 7 times [2022-07-12 10:24:55,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:55,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649861456] [2022-07-12 10:24:55,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:55,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:55,448 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 10:24:55,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:55,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649861456] [2022-07-12 10:24:55,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649861456] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:55,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:55,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:24:55,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961417631] [2022-07-12 10:24:55,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:55,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:24:55,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:55,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:24:55,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:24:55,452 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-12 10:24:55,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 705 transitions, 3756 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:55,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:55,465 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-12 10:24:55,465 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:57,225 INFO L129 PetriNetUnfolder]: 1412/5623 cut-off events. [2022-07-12 10:24:57,226 INFO L130 PetriNetUnfolder]: For 25365/25461 co-relation queries the response was YES. [2022-07-12 10:24:57,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16622 conditions, 5623 events. 1412/5623 cut-off events. For 25365/25461 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 60823 event pairs, 770 based on Foata normal form. 37/5232 useless extension candidates. Maximal degree in co-relation 16511. Up to 1425 conditions per place. [2022-07-12 10:24:57,306 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 210 selfloop transitions, 100 changer transitions 12/763 dead transitions. [2022-07-12 10:24:57,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 746 places, 763 transitions, 5057 flow [2022-07-12 10:24:57,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:24:57,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:24:57,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7554 transitions. [2022-07-12 10:24:57,311 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.774134043861447 [2022-07-12 10:24:57,311 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7554 transitions. [2022-07-12 10:24:57,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7554 transitions. [2022-07-12 10:24:57,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:57,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7554 transitions. [2022-07-12 10:24:57,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 444.3529411764706) internal successors, (7554), 17 states have internal predecessors, (7554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:57,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:57,323 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:57,323 INFO L186 Difference]: Start difference. First operand has 732 places, 705 transitions, 3756 flow. Second operand 17 states and 7554 transitions. [2022-07-12 10:24:57,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 746 places, 763 transitions, 5057 flow [2022-07-12 10:24:57,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 744 places, 763 transitions, 4915 flow, removed 71 selfloop flow, removed 2 redundant places. [2022-07-12 10:24:57,426 INFO L242 Difference]: Finished difference. Result has 753 places, 726 transitions, 4275 flow [2022-07-12 10:24:57,427 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=3648, PETRI_DIFFERENCE_MINUEND_PLACES=728, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4275, PETRI_PLACES=753, PETRI_TRANSITIONS=726} [2022-07-12 10:24:57,427 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 230 predicate places. [2022-07-12 10:24:57,428 INFO L495 AbstractCegarLoop]: Abstraction has has 753 places, 726 transitions, 4275 flow [2022-07-12 10:24:57,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:57,428 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:57,429 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:57,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 10:24:57,429 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:57,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:57,429 INFO L85 PathProgramCache]: Analyzing trace with hash -825348756, now seen corresponding path program 8 times [2022-07-12 10:24:57,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:57,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789841606] [2022-07-12 10:24:57,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:57,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 10:24:57,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:57,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789841606] [2022-07-12 10:24:57,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789841606] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:57,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:57,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:24:57,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013948362] [2022-07-12 10:24:57,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:57,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:24:57,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:57,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:24:57,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:24:57,613 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-12 10:24:57,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 753 places, 726 transitions, 4275 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:57,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:57,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-12 10:24:57,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:59,566 INFO L129 PetriNetUnfolder]: 1417/5665 cut-off events. [2022-07-12 10:24:59,567 INFO L130 PetriNetUnfolder]: For 27882/28023 co-relation queries the response was YES. [2022-07-12 10:24:59,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17282 conditions, 5665 events. 1417/5665 cut-off events. For 27882/28023 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 61804 event pairs, 690 based on Foata normal form. 62/5298 useless extension candidates. Maximal degree in co-relation 17163. Up to 1460 conditions per place. [2022-07-12 10:24:59,649 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 211 selfloop transitions, 107 changer transitions 15/774 dead transitions. [2022-07-12 10:24:59,649 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 766 places, 774 transitions, 5363 flow [2022-07-12 10:24:59,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:24:59,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:24:59,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 7114 transitions. [2022-07-12 10:24:59,654 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7746080139372822 [2022-07-12 10:24:59,654 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 7114 transitions. [2022-07-12 10:24:59,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 7114 transitions. [2022-07-12 10:24:59,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:59,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 7114 transitions. [2022-07-12 10:24:59,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 444.625) internal successors, (7114), 16 states have internal predecessors, (7114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:59,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 574.0) internal successors, (9758), 17 states have internal predecessors, (9758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:59,664 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 574.0) internal successors, (9758), 17 states have internal predecessors, (9758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:59,664 INFO L186 Difference]: Start difference. First operand has 753 places, 726 transitions, 4275 flow. Second operand 16 states and 7114 transitions. [2022-07-12 10:24:59,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 766 places, 774 transitions, 5363 flow [2022-07-12 10:24:59,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 764 places, 774 transitions, 5243 flow, removed 60 selfloop flow, removed 2 redundant places. [2022-07-12 10:24:59,789 INFO L242 Difference]: Finished difference. Result has 771 places, 734 transitions, 4563 flow [2022-07-12 10:24:59,790 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=4159, PETRI_DIFFERENCE_MINUEND_PLACES=749, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4563, PETRI_PLACES=771, PETRI_TRANSITIONS=734} [2022-07-12 10:24:59,790 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 248 predicate places. [2022-07-12 10:24:59,790 INFO L495 AbstractCegarLoop]: Abstraction has has 771 places, 734 transitions, 4563 flow [2022-07-12 10:24:59,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:59,791 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:59,791 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:59,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 10:24:59,792 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:59,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:59,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1591793836, now seen corresponding path program 9 times [2022-07-12 10:24:59,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:59,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873858337] [2022-07-12 10:24:59,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:59,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:59,952 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 10:24:59,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:59,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873858337] [2022-07-12 10:24:59,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873858337] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:59,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:59,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:24:59,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624996681] [2022-07-12 10:24:59,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:59,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:24:59,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:59,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:24:59,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:24:59,957 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-12 10:24:59,959 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 771 places, 734 transitions, 4563 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:59,959 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:59,959 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-12 10:24:59,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:01,810 INFO L129 PetriNetUnfolder]: 1462/5928 cut-off events. [2022-07-12 10:25:01,810 INFO L130 PetriNetUnfolder]: For 31510/31651 co-relation queries the response was YES. [2022-07-12 10:25:01,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18529 conditions, 5928 events. 1462/5928 cut-off events. For 31510/31651 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 65640 event pairs, 766 based on Foata normal form. 55/5550 useless extension candidates. Maximal degree in co-relation 18404. Up to 1388 conditions per place. [2022-07-12 10:25:01,910 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 244 selfloop transitions, 98 changer transitions 19/802 dead transitions. [2022-07-12 10:25:01,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 789 places, 802 transitions, 6129 flow [2022-07-12 10:25:01,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:25:01,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:25:01,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 9310 transitions. [2022-07-12 10:25:01,918 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7723577235772358 [2022-07-12 10:25:01,918 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 9310 transitions. [2022-07-12 10:25:01,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 9310 transitions. [2022-07-12 10:25:01,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:01,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 9310 transitions. [2022-07-12 10:25:01,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 443.3333333333333) internal successors, (9310), 21 states have internal predecessors, (9310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:01,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 574.0) internal successors, (12628), 22 states have internal predecessors, (12628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:01,934 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 574.0) internal successors, (12628), 22 states have internal predecessors, (12628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:01,934 INFO L186 Difference]: Start difference. First operand has 771 places, 734 transitions, 4563 flow. Second operand 21 states and 9310 transitions. [2022-07-12 10:25:01,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 789 places, 802 transitions, 6129 flow [2022-07-12 10:25:02,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 786 places, 802 transitions, 6016 flow, removed 34 selfloop flow, removed 3 redundant places. [2022-07-12 10:25:02,075 INFO L242 Difference]: Finished difference. Result has 800 places, 758 transitions, 5280 flow [2022-07-12 10:25:02,075 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=4482, PETRI_DIFFERENCE_MINUEND_PLACES=766, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=650, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5280, PETRI_PLACES=800, PETRI_TRANSITIONS=758} [2022-07-12 10:25:02,076 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 277 predicate places. [2022-07-12 10:25:02,076 INFO L495 AbstractCegarLoop]: Abstraction has has 800 places, 758 transitions, 5280 flow [2022-07-12 10:25:02,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:02,077 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:02,077 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:02,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 10:25:02,078 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:02,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:02,078 INFO L85 PathProgramCache]: Analyzing trace with hash 146240648, now seen corresponding path program 10 times [2022-07-12 10:25:02,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:02,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703826582] [2022-07-12 10:25:02,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:02,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:02,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 10:25:02,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:02,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703826582] [2022-07-12 10:25:02,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703826582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:02,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:02,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:02,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522513780] [2022-07-12 10:25:02,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:02,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:02,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:02,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:02,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:02,244 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-12 10:25:02,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 800 places, 758 transitions, 5280 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:02,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:02,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-12 10:25:02,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:04,256 INFO L129 PetriNetUnfolder]: 1486/6033 cut-off events. [2022-07-12 10:25:04,257 INFO L130 PetriNetUnfolder]: For 36819/36978 co-relation queries the response was YES. [2022-07-12 10:25:04,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19668 conditions, 6033 events. 1486/6033 cut-off events. For 36819/36978 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 67344 event pairs, 782 based on Foata normal form. 64/5645 useless extension candidates. Maximal degree in co-relation 19531. Up to 1526 conditions per place. [2022-07-12 10:25:04,362 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 226 selfloop transitions, 120 changer transitions 16/803 dead transitions. [2022-07-12 10:25:04,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 815 places, 803 transitions, 6521 flow [2022-07-12 10:25:04,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:04,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:04,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7990 transitions. [2022-07-12 10:25:04,367 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7733255903987611 [2022-07-12 10:25:04,367 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7990 transitions. [2022-07-12 10:25:04,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7990 transitions. [2022-07-12 10:25:04,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:04,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7990 transitions. [2022-07-12 10:25:04,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 443.8888888888889) internal successors, (7990), 18 states have internal predecessors, (7990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:04,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:04,378 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:04,378 INFO L186 Difference]: Start difference. First operand has 800 places, 758 transitions, 5280 flow. Second operand 18 states and 7990 transitions. [2022-07-12 10:25:04,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 815 places, 803 transitions, 6521 flow [2022-07-12 10:25:04,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 813 places, 803 transitions, 6287 flow, removed 117 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:04,545 INFO L242 Difference]: Finished difference. Result has 821 places, 772 transitions, 5660 flow [2022-07-12 10:25:04,546 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=5092, PETRI_DIFFERENCE_MINUEND_PLACES=796, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5660, PETRI_PLACES=821, PETRI_TRANSITIONS=772} [2022-07-12 10:25:04,546 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 298 predicate places. [2022-07-12 10:25:04,546 INFO L495 AbstractCegarLoop]: Abstraction has has 821 places, 772 transitions, 5660 flow [2022-07-12 10:25:04,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:04,547 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:04,547 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:04,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 10:25:04,548 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:04,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:04,548 INFO L85 PathProgramCache]: Analyzing trace with hash -816679436, now seen corresponding path program 11 times [2022-07-12 10:25:04,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:04,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162448198] [2022-07-12 10:25:04,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:04,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 10:25:04,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:04,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162448198] [2022-07-12 10:25:04,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162448198] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:04,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:04,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:04,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020321145] [2022-07-12 10:25:04,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:04,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:04,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:04,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:04,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:04,897 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-12 10:25:04,899 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 821 places, 772 transitions, 5660 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:04,899 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:04,899 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-12 10:25:04,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:06,997 INFO L129 PetriNetUnfolder]: 1517/6141 cut-off events. [2022-07-12 10:25:06,997 INFO L130 PetriNetUnfolder]: For 34891/35029 co-relation queries the response was YES. [2022-07-12 10:25:07,080 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20347 conditions, 6141 events. 1517/6141 cut-off events. For 34891/35029 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 69250 event pairs, 689 based on Foata normal form. 37/5716 useless extension candidates. Maximal degree in co-relation 20203. Up to 1559 conditions per place. [2022-07-12 10:25:07,099 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 256 selfloop transitions, 113 changer transitions 11/821 dead transitions. [2022-07-12 10:25:07,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 835 places, 821 transitions, 7049 flow [2022-07-12 10:25:07,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:25:07,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:25:07,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7554 transitions. [2022-07-12 10:25:07,103 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.774134043861447 [2022-07-12 10:25:07,103 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7554 transitions. [2022-07-12 10:25:07,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7554 transitions. [2022-07-12 10:25:07,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:07,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7554 transitions. [2022-07-12 10:25:07,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 444.3529411764706) internal successors, (7554), 17 states have internal predecessors, (7554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:07,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:07,114 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:07,114 INFO L186 Difference]: Start difference. First operand has 821 places, 772 transitions, 5660 flow. Second operand 17 states and 7554 transitions. [2022-07-12 10:25:07,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 835 places, 821 transitions, 7049 flow [2022-07-12 10:25:07,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 831 places, 821 transitions, 6882 flow, removed 34 selfloop flow, removed 4 redundant places. [2022-07-12 10:25:07,300 INFO L242 Difference]: Finished difference. Result has 839 places, 790 transitions, 6199 flow [2022-07-12 10:25:07,301 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=5505, PETRI_DIFFERENCE_MINUEND_PLACES=815, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6199, PETRI_PLACES=839, PETRI_TRANSITIONS=790} [2022-07-12 10:25:07,301 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 316 predicate places. [2022-07-12 10:25:07,302 INFO L495 AbstractCegarLoop]: Abstraction has has 839 places, 790 transitions, 6199 flow [2022-07-12 10:25:07,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:07,302 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:07,303 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:07,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 10:25:07,303 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:07,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:07,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1282102000, now seen corresponding path program 12 times [2022-07-12 10:25:07,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:07,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026267403] [2022-07-12 10:25:07,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:07,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:07,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 10:25:07,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:07,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026267403] [2022-07-12 10:25:07,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026267403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:07,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:07,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:07,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962034385] [2022-07-12 10:25:07,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:07,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:07,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:07,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:07,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:07,431 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-12 10:25:07,433 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 839 places, 790 transitions, 6199 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:07,433 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:07,433 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-12 10:25:07,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:09,336 INFO L129 PetriNetUnfolder]: 1516/6203 cut-off events. [2022-07-12 10:25:09,337 INFO L130 PetriNetUnfolder]: For 35862/36024 co-relation queries the response was YES. [2022-07-12 10:25:09,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20672 conditions, 6203 events. 1516/6203 cut-off events. For 35862/36024 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 70226 event pairs, 677 based on Foata normal form. 46/5792 useless extension candidates. Maximal degree in co-relation 20522. Up to 1546 conditions per place. [2022-07-12 10:25:09,450 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 254 selfloop transitions, 116 changer transitions 20/831 dead transitions. [2022-07-12 10:25:09,450 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 854 places, 831 transitions, 7390 flow [2022-07-12 10:25:09,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:09,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:09,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7994 transitions. [2022-07-12 10:25:09,454 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7737127371273713 [2022-07-12 10:25:09,454 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7994 transitions. [2022-07-12 10:25:09,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7994 transitions. [2022-07-12 10:25:09,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:09,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7994 transitions. [2022-07-12 10:25:09,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 444.1111111111111) internal successors, (7994), 18 states have internal predecessors, (7994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:09,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:09,465 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:09,465 INFO L186 Difference]: Start difference. First operand has 839 places, 790 transitions, 6199 flow. Second operand 18 states and 7994 transitions. [2022-07-12 10:25:09,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 854 places, 831 transitions, 7390 flow [2022-07-12 10:25:09,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 851 places, 831 transitions, 7174 flow, removed 83 selfloop flow, removed 3 redundant places. [2022-07-12 10:25:09,822 INFO L242 Difference]: Finished difference. Result has 858 places, 799 transitions, 6489 flow [2022-07-12 10:25:09,823 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=6015, PETRI_DIFFERENCE_MINUEND_PLACES=834, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=790, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=677, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6489, PETRI_PLACES=858, PETRI_TRANSITIONS=799} [2022-07-12 10:25:09,823 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 335 predicate places. [2022-07-12 10:25:09,823 INFO L495 AbstractCegarLoop]: Abstraction has has 858 places, 799 transitions, 6489 flow [2022-07-12 10:25:09,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:09,824 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:09,824 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:09,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 10:25:09,824 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:09,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:09,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1009102832, now seen corresponding path program 13 times [2022-07-12 10:25:09,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:09,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123670783] [2022-07-12 10:25:09,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:09,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:09,968 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 10:25:09,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:09,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123670783] [2022-07-12 10:25:09,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123670783] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:09,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:09,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:09,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104660793] [2022-07-12 10:25:09,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:09,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:09,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:09,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:09,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:09,973 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-12 10:25:09,974 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 858 places, 799 transitions, 6489 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:09,974 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:09,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-12 10:25:09,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:12,302 INFO L129 PetriNetUnfolder]: 1639/6436 cut-off events. [2022-07-12 10:25:12,302 INFO L130 PetriNetUnfolder]: For 45467/45721 co-relation queries the response was YES. [2022-07-12 10:25:12,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22418 conditions, 6436 events. 1639/6436 cut-off events. For 45467/45721 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 72940 event pairs, 649 based on Foata normal form. 32/6002 useless extension candidates. Maximal degree in co-relation 22263. Up to 1441 conditions per place. [2022-07-12 10:25:12,412 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 279 selfloop transitions, 143 changer transitions 19/882 dead transitions. [2022-07-12 10:25:12,412 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 877 places, 882 transitions, 8344 flow [2022-07-12 10:25:12,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:25:12,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:25:12,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 9745 transitions. [2022-07-12 10:25:12,417 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7716978143807413 [2022-07-12 10:25:12,417 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 9745 transitions. [2022-07-12 10:25:12,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 9745 transitions. [2022-07-12 10:25:12,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:12,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 9745 transitions. [2022-07-12 10:25:12,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 442.95454545454544) internal successors, (9745), 22 states have internal predecessors, (9745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 574.0) internal successors, (13202), 23 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,430 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 574.0) internal successors, (13202), 23 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,431 INFO L186 Difference]: Start difference. First operand has 858 places, 799 transitions, 6489 flow. Second operand 22 states and 9745 transitions. [2022-07-12 10:25:12,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 877 places, 882 transitions, 8344 flow [2022-07-12 10:25:12,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 874 places, 882 transitions, 8172 flow, removed 55 selfloop flow, removed 3 redundant places. [2022-07-12 10:25:12,654 INFO L242 Difference]: Finished difference. Result has 888 places, 831 transitions, 7363 flow [2022-07-12 10:25:12,655 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=6332, PETRI_DIFFERENCE_MINUEND_PLACES=853, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=799, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=677, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7363, PETRI_PLACES=888, PETRI_TRANSITIONS=831} [2022-07-12 10:25:12,656 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 365 predicate places. [2022-07-12 10:25:12,656 INFO L495 AbstractCegarLoop]: Abstraction has has 888 places, 831 transitions, 7363 flow [2022-07-12 10:25:12,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,656 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:12,657 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:12,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 10:25:12,657 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:12,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:12,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1029494804, now seen corresponding path program 14 times [2022-07-12 10:25:12,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:12,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691250188] [2022-07-12 10:25:12,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:12,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:12,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 10:25:12,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:12,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691250188] [2022-07-12 10:25:12,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691250188] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:12,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:12,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:12,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018340801] [2022-07-12 10:25:12,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:12,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:12,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:12,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:12,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:12,783 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-12 10:25:12,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 888 places, 831 transitions, 7363 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,784 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:12,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-12 10:25:12,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:15,112 INFO L129 PetriNetUnfolder]: 1682/6638 cut-off events. [2022-07-12 10:25:15,112 INFO L130 PetriNetUnfolder]: For 52580/52858 co-relation queries the response was YES. [2022-07-12 10:25:15,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24171 conditions, 6638 events. 1682/6638 cut-off events. For 52580/52858 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 76240 event pairs, 663 based on Foata normal form. 23/6169 useless extension candidates. Maximal degree in co-relation 24003. Up to 1463 conditions per place. [2022-07-12 10:25:15,273 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 332 selfloop transitions, 105 changer transitions 17/895 dead transitions. [2022-07-12 10:25:15,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 906 places, 895 transitions, 9138 flow [2022-07-12 10:25:15,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:25:15,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:25:15,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 9307 transitions. [2022-07-12 10:25:15,279 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7721088435374149 [2022-07-12 10:25:15,279 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 9307 transitions. [2022-07-12 10:25:15,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 9307 transitions. [2022-07-12 10:25:15,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:15,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 9307 transitions. [2022-07-12 10:25:15,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 443.1904761904762) internal successors, (9307), 21 states have internal predecessors, (9307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 574.0) internal successors, (12628), 22 states have internal predecessors, (12628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,294 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 574.0) internal successors, (12628), 22 states have internal predecessors, (12628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,294 INFO L186 Difference]: Start difference. First operand has 888 places, 831 transitions, 7363 flow. Second operand 21 states and 9307 transitions. [2022-07-12 10:25:15,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 906 places, 895 transitions, 9138 flow [2022-07-12 10:25:15,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 904 places, 895 transitions, 8964 flow, removed 87 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:15,788 INFO L242 Difference]: Finished difference. Result has 918 places, 855 transitions, 8047 flow [2022-07-12 10:25:15,789 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=7203, PETRI_DIFFERENCE_MINUEND_PLACES=884, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=741, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8047, PETRI_PLACES=918, PETRI_TRANSITIONS=855} [2022-07-12 10:25:15,789 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 395 predicate places. [2022-07-12 10:25:15,789 INFO L495 AbstractCegarLoop]: Abstraction has has 918 places, 855 transitions, 8047 flow [2022-07-12 10:25:15,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,790 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:15,790 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:15,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 10:25:15,790 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:15,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:15,791 INFO L85 PathProgramCache]: Analyzing trace with hash -693912916, now seen corresponding path program 15 times [2022-07-12 10:25:15,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:15,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973921169] [2022-07-12 10:25:15,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:15,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:15,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 10:25:15,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:15,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973921169] [2022-07-12 10:25:15,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973921169] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:15,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:15,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:15,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744676085] [2022-07-12 10:25:15,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:15,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:15,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:15,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:15,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:15,921 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-12 10:25:15,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 918 places, 855 transitions, 8047 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:15,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-12 10:25:15,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:18,303 INFO L129 PetriNetUnfolder]: 1715/6786 cut-off events. [2022-07-12 10:25:18,303 INFO L130 PetriNetUnfolder]: For 57337/57659 co-relation queries the response was YES. [2022-07-12 10:25:18,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25324 conditions, 6786 events. 1715/6786 cut-off events. For 57337/57659 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 78426 event pairs, 660 based on Foata normal form. 59/6356 useless extension candidates. Maximal degree in co-relation 25143. Up to 1529 conditions per place. [2022-07-12 10:25:18,436 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 300 selfloop transitions, 161 changer transitions 14/916 dead transitions. [2022-07-12 10:25:18,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 933 places, 916 transitions, 9717 flow [2022-07-12 10:25:18,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:18,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:18,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7991 transitions. [2022-07-12 10:25:18,440 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7734223770809137 [2022-07-12 10:25:18,440 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7991 transitions. [2022-07-12 10:25:18,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7991 transitions. [2022-07-12 10:25:18,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:18,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7991 transitions. [2022-07-12 10:25:18,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 443.94444444444446) internal successors, (7991), 18 states have internal predecessors, (7991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:18,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:18,451 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:18,451 INFO L186 Difference]: Start difference. First operand has 918 places, 855 transitions, 8047 flow. Second operand 18 states and 7991 transitions. [2022-07-12 10:25:18,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 933 places, 916 transitions, 9717 flow [2022-07-12 10:25:18,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 931 places, 916 transitions, 9537 flow, removed 90 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:18,780 INFO L242 Difference]: Finished difference. Result has 939 places, 876 transitions, 8709 flow [2022-07-12 10:25:18,781 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=7869, PETRI_DIFFERENCE_MINUEND_PLACES=914, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=855, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=708, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8709, PETRI_PLACES=939, PETRI_TRANSITIONS=876} [2022-07-12 10:25:18,781 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 416 predicate places. [2022-07-12 10:25:18,781 INFO L495 AbstractCegarLoop]: Abstraction has has 939 places, 876 transitions, 8709 flow [2022-07-12 10:25:18,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:18,782 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:18,782 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:18,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 10:25:18,782 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:18,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:18,783 INFO L85 PathProgramCache]: Analyzing trace with hash -738031714, now seen corresponding path program 16 times [2022-07-12 10:25:18,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:18,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284336234] [2022-07-12 10:25:18,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:18,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 10:25:18,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:18,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284336234] [2022-07-12 10:25:18,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284336234] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:18,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:18,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:18,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074026234] [2022-07-12 10:25:18,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:18,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:18,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:18,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:18,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:18,915 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-12 10:25:18,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 939 places, 876 transitions, 8709 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:18,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:18,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-12 10:25:18,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:21,868 INFO L129 PetriNetUnfolder]: 1780/7381 cut-off events. [2022-07-12 10:25:21,869 INFO L130 PetriNetUnfolder]: For 64193/64518 co-relation queries the response was YES. [2022-07-12 10:25:21,986 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27447 conditions, 7381 events. 1780/7381 cut-off events. For 64193/64518 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 87250 event pairs, 828 based on Foata normal form. 50/6911 useless extension candidates. Maximal degree in co-relation 27259. Up to 1565 conditions per place. [2022-07-12 10:25:22,011 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 342 selfloop transitions, 134 changer transitions 12/929 dead transitions. [2022-07-12 10:25:22,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 953 places, 929 transitions, 10419 flow [2022-07-12 10:25:22,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:25:22,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:25:22,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7553 transitions. [2022-07-12 10:25:22,018 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7740315638450502 [2022-07-12 10:25:22,018 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7553 transitions. [2022-07-12 10:25:22,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7553 transitions. [2022-07-12 10:25:22,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:22,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7553 transitions. [2022-07-12 10:25:22,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 444.29411764705884) internal successors, (7553), 17 states have internal predecessors, (7553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,031 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,031 INFO L186 Difference]: Start difference. First operand has 939 places, 876 transitions, 8709 flow. Second operand 17 states and 7553 transitions. [2022-07-12 10:25:22,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 953 places, 929 transitions, 10419 flow [2022-07-12 10:25:22,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 951 places, 929 transitions, 10201 flow, removed 109 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:22,402 INFO L242 Difference]: Finished difference. Result has 960 places, 897 transitions, 9341 flow [2022-07-12 10:25:22,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=8535, PETRI_DIFFERENCE_MINUEND_PLACES=935, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=876, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=757, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9341, PETRI_PLACES=960, PETRI_TRANSITIONS=897} [2022-07-12 10:25:22,403 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 437 predicate places. [2022-07-12 10:25:22,403 INFO L495 AbstractCegarLoop]: Abstraction has has 960 places, 897 transitions, 9341 flow [2022-07-12 10:25:22,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,404 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:22,405 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:22,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 10:25:22,405 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:22,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:22,406 INFO L85 PathProgramCache]: Analyzing trace with hash 783047828, now seen corresponding path program 17 times [2022-07-12 10:25:22,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:22,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746147167] [2022-07-12 10:25:22,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:22,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:22,534 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 10:25:22,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:22,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746147167] [2022-07-12 10:25:22,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746147167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:22,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:22,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:22,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793815942] [2022-07-12 10:25:22,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:22,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:22,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:22,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:22,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:22,538 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-12 10:25:22,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 960 places, 897 transitions, 9341 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:22,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-12 10:25:22,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand