/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-node-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 20:21:27,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 20:21:27,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 20:21:27,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 20:21:27,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 20:21:27,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 20:21:27,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 20:21:27,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 20:21:27,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 20:21:27,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 20:21:27,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 20:21:27,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 20:21:27,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 20:21:27,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 20:21:27,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 20:21:27,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 20:21:27,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 20:21:27,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 20:21:27,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 20:21:27,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 20:21:27,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 20:21:27,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 20:21:27,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 20:21:27,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 20:21:27,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 20:21:27,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 20:21:27,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 20:21:27,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 20:21:27,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 20:21:27,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 20:21:27,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 20:21:27,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 20:21:27,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 20:21:27,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 20:21:27,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 20:21:27,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 20:21:27,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 20:21:27,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 20:21:27,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 20:21:27,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 20:21:27,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 20:21:27,056 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 20:21:27,076 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 20:21:27,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 20:21:27,078 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 20:21:27,078 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 20:21:27,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 20:21:27,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 20:21:27,079 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 20:21:27,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 20:21:27,079 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 20:21:27,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 20:21:27,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 20:21:27,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 20:21:27,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 20:21:27,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 20:21:27,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 20:21:27,081 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 20:21:27,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 20:21:27,081 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 20:21:27,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 20:21:27,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 20:21:27,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 20:21:27,082 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 20:21:27,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 20:21:27,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:21:27,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 20:21:27,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 20:21:27,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 20:21:27,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 20:21:27,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 20:21:27,084 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 20:21:27,084 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 20:21:27,085 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 20:21:27,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 20:21:27,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 20:21:27,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 20:21:27,490 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 20:21:27,491 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 20:21:27,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2023-01-27 20:21:29,001 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 20:21:29,262 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 20:21:29,262 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2023-01-27 20:21:29,270 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a6114d47/a28c6c263a894532aa32dd19c93b4a41/FLAG8b7999f66 [2023-01-27 20:21:29,284 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a6114d47/a28c6c263a894532aa32dd19c93b4a41 [2023-01-27 20:21:29,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 20:21:29,287 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 20:21:29,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 20:21:29,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 20:21:29,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 20:21:29,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:21:29" (1/1) ... [2023-01-27 20:21:29,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c2a25b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:29, skipping insertion in model container [2023-01-27 20:21:29,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:21:29" (1/1) ... [2023-01-27 20:21:29,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 20:21:29,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 20:21:29,611 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-trans.wvr.c[3945,3958] [2023-01-27 20:21:29,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:21:29,656 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 20:21:29,710 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-trans.wvr.c[3945,3958] [2023-01-27 20:21:29,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:21:29,730 INFO L208 MainTranslator]: Completed translation [2023-01-27 20:21:29,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:29 WrapperNode [2023-01-27 20:21:29,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 20:21:29,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 20:21:29,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 20:21:29,744 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 20:21:29,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:29" (1/1) ... [2023-01-27 20:21:29,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:29" (1/1) ... [2023-01-27 20:21:29,819 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 431 [2023-01-27 20:21:29,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 20:21:29,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 20:21:29,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 20:21:29,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 20:21:29,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:29" (1/1) ... [2023-01-27 20:21:29,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:29" (1/1) ... [2023-01-27 20:21:29,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:29" (1/1) ... [2023-01-27 20:21:29,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:29" (1/1) ... [2023-01-27 20:21:29,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:29" (1/1) ... [2023-01-27 20:21:29,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:29" (1/1) ... [2023-01-27 20:21:29,892 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:29" (1/1) ... [2023-01-27 20:21:29,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:29" (1/1) ... [2023-01-27 20:21:29,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 20:21:29,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 20:21:29,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 20:21:29,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 20:21:29,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:29" (1/1) ... [2023-01-27 20:21:29,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:21:29,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:21:29,991 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 20:21:30,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 20:21:30,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 20:21:30,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 20:21:30,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 20:21:30,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 20:21:30,063 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 20:21:30,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 20:21:30,063 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 20:21:30,064 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 20:21:30,064 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 20:21:30,067 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 20:21:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 20:21:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 20:21:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 20:21:30,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 20:21:30,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 20:21:30,070 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 20:21:30,281 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 20:21:30,283 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 20:21:30,846 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 20:21:30,856 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 20:21:30,857 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-27 20:21:30,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:21:30 BoogieIcfgContainer [2023-01-27 20:21:30,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 20:21:30,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 20:21:30,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 20:21:30,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 20:21:30,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 08:21:29" (1/3) ... [2023-01-27 20:21:30,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530b8187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:21:30, skipping insertion in model container [2023-01-27 20:21:30,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:29" (2/3) ... [2023-01-27 20:21:30,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530b8187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:21:30, skipping insertion in model container [2023-01-27 20:21:30,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:21:30" (3/3) ... [2023-01-27 20:21:30,879 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-trans.wvr.c [2023-01-27 20:21:30,903 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 20:21:30,904 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 20:21:30,904 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 20:21:31,079 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-27 20:21:31,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 470 places, 501 transitions, 1026 flow [2023-01-27 20:21:31,284 INFO L130 PetriNetUnfolder]: 41/498 cut-off events. [2023-01-27 20:21:31,285 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:21:31,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 498 events. 41/498 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 643 event pairs, 0 based on Foata normal form. 0/456 useless extension candidates. Maximal degree in co-relation 424. Up to 2 conditions per place. [2023-01-27 20:21:31,293 INFO L82 GeneralOperation]: Start removeDead. Operand has 470 places, 501 transitions, 1026 flow [2023-01-27 20:21:31,301 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 457 places, 488 transitions, 994 flow [2023-01-27 20:21:31,303 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 20:21:31,315 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 457 places, 488 transitions, 994 flow [2023-01-27 20:21:31,318 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 457 places, 488 transitions, 994 flow [2023-01-27 20:21:31,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 457 places, 488 transitions, 994 flow [2023-01-27 20:21:31,375 INFO L130 PetriNetUnfolder]: 41/488 cut-off events. [2023-01-27 20:21:31,376 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:21:31,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 488 events. 41/488 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 642 event pairs, 0 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 424. Up to 2 conditions per place. [2023-01-27 20:21:31,386 INFO L119 LiptonReduction]: Number of co-enabled transitions 17280 [2023-01-27 20:21:46,762 INFO L134 LiptonReduction]: Checked pairs total: 21051 [2023-01-27 20:21:46,762 INFO L136 LiptonReduction]: Total number of compositions: 563 [2023-01-27 20:21:46,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 20:21:46,786 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@488e823, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 20:21:46,786 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 20:21:46,819 INFO L130 PetriNetUnfolder]: 10/41 cut-off events. [2023-01-27 20:21:46,819 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:21:46,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:46,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:21:46,820 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:21:46,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:46,834 INFO L85 PathProgramCache]: Analyzing trace with hash 558250822, now seen corresponding path program 1 times [2023-01-27 20:21:46,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:46,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935044917] [2023-01-27 20:21:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:46,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:47,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:21:47,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:47,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935044917] [2023-01-27 20:21:47,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935044917] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:47,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:47,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 20:21:47,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852849137] [2023-01-27 20:21:47,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:47,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-27 20:21:47,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:47,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-27 20:21:47,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-27 20:21:47,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 465 out of 1064 [2023-01-27 20:21:47,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 477.5) internal successors, (955), 2 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:47,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:47,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 465 of 1064 [2023-01-27 20:21:47,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:47,497 INFO L130 PetriNetUnfolder]: 699/1048 cut-off events. [2023-01-27 20:21:47,497 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-01-27 20:21:47,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 1048 events. 699/1048 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3691 event pairs, 557 based on Foata normal form. 0/906 useless extension candidates. Maximal degree in co-relation 2016. Up to 1049 conditions per place. [2023-01-27 20:21:47,502 INFO L137 encePairwiseOnDemand]: 1063/1064 looper letters, 41 selfloop transitions, 0 changer transitions 0/41 dead transitions. [2023-01-27 20:21:47,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 182 flow [2023-01-27 20:21:47,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-27 20:21:47,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-27 20:21:47,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 972 transitions. [2023-01-27 20:21:47,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567669172932331 [2023-01-27 20:21:47,519 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 972 transitions. [2023-01-27 20:21:47,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 972 transitions. [2023-01-27 20:21:47,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:47,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 972 transitions. [2023-01-27 20:21:47,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 486.0) internal successors, (972), 2 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:47,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1064.0) internal successors, (3192), 3 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:47,535 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1064.0) internal successors, (3192), 3 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:47,536 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 102 flow. Second operand 2 states and 972 transitions. [2023-01-27 20:21:47,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 182 flow [2023-01-27 20:21:47,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 170 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 20:21:47,541 INFO L231 Difference]: Finished difference. Result has 37 places, 41 transitions, 88 flow [2023-01-27 20:21:47,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=37, PETRI_TRANSITIONS=41} [2023-01-27 20:21:47,546 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-01-27 20:21:47,547 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 41 transitions, 88 flow [2023-01-27 20:21:47,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 477.5) internal successors, (955), 2 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:47,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:47,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:21:47,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 20:21:47,548 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:21:47,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:47,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2005961306, now seen corresponding path program 1 times [2023-01-27 20:21:47,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:47,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516068308] [2023-01-27 20:21:47,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:47,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:47,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:21:47,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:47,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516068308] [2023-01-27 20:21:47,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516068308] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:47,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:47,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:21:47,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971871336] [2023-01-27 20:21:47,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:47,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:21:47,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:47,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:21:47,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:21:47,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 458 out of 1064 [2023-01-27 20:21:47,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 41 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:47,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:47,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 458 of 1064 [2023-01-27 20:21:47,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:47,958 INFO L130 PetriNetUnfolder]: 789/1184 cut-off events. [2023-01-27 20:21:47,958 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-27 20:21:47,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 1184 events. 789/1184 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4309 event pairs, 473 based on Foata normal form. 0/1036 useless extension candidates. Maximal degree in co-relation 2432. Up to 867 conditions per place. [2023-01-27 20:21:47,962 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 52 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-01-27 20:21:47,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 55 transitions, 228 flow [2023-01-27 20:21:47,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:21:47,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:21:47,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1430 transitions. [2023-01-27 20:21:47,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44799498746867167 [2023-01-27 20:21:47,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1430 transitions. [2023-01-27 20:21:47,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1430 transitions. [2023-01-27 20:21:47,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:47,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1430 transitions. [2023-01-27 20:21:47,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 476.6666666666667) internal successors, (1430), 3 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:47,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:47,972 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:47,973 INFO L175 Difference]: Start difference. First operand has 37 places, 41 transitions, 88 flow. Second operand 3 states and 1430 transitions. [2023-01-27 20:21:47,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 55 transitions, 228 flow [2023-01-27 20:21:47,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 20:21:47,997 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 106 flow [2023-01-27 20:21:47,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2023-01-27 20:21:47,997 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-01-27 20:21:47,998 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 106 flow [2023-01-27 20:21:47,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:47,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:47,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:21:47,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 20:21:47,999 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:21:48,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:48,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2002543410, now seen corresponding path program 1 times [2023-01-27 20:21:48,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:48,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74193680] [2023-01-27 20:21:48,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:48,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:21:48,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:48,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74193680] [2023-01-27 20:21:48,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74193680] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:48,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:48,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 20:21:48,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092884501] [2023-01-27 20:21:48,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:48,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:21:48,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:48,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:21:48,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:21:48,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 1064 [2023-01-27 20:21:48,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 441.6666666666667) internal successors, (1325), 3 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:48,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:48,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 1064 [2023-01-27 20:21:48,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:48,394 INFO L130 PetriNetUnfolder]: 789/1185 cut-off events. [2023-01-27 20:21:48,394 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-01-27 20:21:48,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2807 conditions, 1185 events. 789/1185 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4292 event pairs, 641 based on Foata normal form. 0/1129 useless extension candidates. Maximal degree in co-relation 2802. Up to 1185 conditions per place. [2023-01-27 20:21:48,398 INFO L137 encePairwiseOnDemand]: 1061/1064 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-01-27 20:21:48,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 194 flow [2023-01-27 20:21:48,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:21:48,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:21:48,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1339 transitions. [2023-01-27 20:21:48,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41948621553884713 [2023-01-27 20:21:48,401 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1339 transitions. [2023-01-27 20:21:48,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1339 transitions. [2023-01-27 20:21:48,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:48,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1339 transitions. [2023-01-27 20:21:48,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 446.3333333333333) internal successors, (1339), 3 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:48,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:48,409 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:48,409 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 106 flow. Second operand 3 states and 1339 transitions. [2023-01-27 20:21:48,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 194 flow [2023-01-27 20:21:48,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 20:21:48,413 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 112 flow [2023-01-27 20:21:48,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-01-27 20:21:48,413 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-01-27 20:21:48,413 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 112 flow [2023-01-27 20:21:48,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 441.6666666666667) internal successors, (1325), 3 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:48,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:48,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:21:48,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 20:21:48,415 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:21:48,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:48,415 INFO L85 PathProgramCache]: Analyzing trace with hash 283624533, now seen corresponding path program 1 times [2023-01-27 20:21:48,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:48,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178046632] [2023-01-27 20:21:48,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:48,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:48,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:21:48,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:48,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178046632] [2023-01-27 20:21:48,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178046632] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:48,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:48,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:21:48,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479337272] [2023-01-27 20:21:48,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:48,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:21:48,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:48,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:21:48,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:21:48,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 1064 [2023-01-27 20:21:48,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 427.5) internal successors, (1710), 4 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:48,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:48,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 1064 [2023-01-27 20:21:48,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:48,718 INFO L130 PetriNetUnfolder]: 789/1186 cut-off events. [2023-01-27 20:21:48,718 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-01-27 20:21:48,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 1186 events. 789/1186 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1084 useless extension candidates. Maximal degree in co-relation 2671. Up to 1185 conditions per place. [2023-01-27 20:21:48,723 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 41 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-01-27 20:21:48,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 202 flow [2023-01-27 20:21:48,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:21:48,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:21:48,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1723 transitions. [2023-01-27 20:21:48,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40484022556390975 [2023-01-27 20:21:48,726 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1723 transitions. [2023-01-27 20:21:48,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1723 transitions. [2023-01-27 20:21:48,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:48,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1723 transitions. [2023-01-27 20:21:48,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 430.75) internal successors, (1723), 4 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:48,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:48,736 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:48,736 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 112 flow. Second operand 4 states and 1723 transitions. [2023-01-27 20:21:48,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 202 flow [2023-01-27 20:21:48,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 198 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 20:21:48,738 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 122 flow [2023-01-27 20:21:48,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-01-27 20:21:48,739 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2023-01-27 20:21:48,739 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 122 flow [2023-01-27 20:21:48,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 427.5) internal successors, (1710), 4 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:48,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:48,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:21:48,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 20:21:48,741 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:21:48,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:48,741 INFO L85 PathProgramCache]: Analyzing trace with hash 194249792, now seen corresponding path program 1 times [2023-01-27 20:21:48,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:48,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108197236] [2023-01-27 20:21:48,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:48,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:48,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:21:48,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:48,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108197236] [2023-01-27 20:21:48,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108197236] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:48,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:48,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:21:48,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286682810] [2023-01-27 20:21:48,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:48,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:21:48,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:48,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:21:48,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:21:48,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 1064 [2023-01-27 20:21:48,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 427.75) internal successors, (1711), 4 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:48,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:48,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 1064 [2023-01-27 20:21:48,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:48,971 INFO L130 PetriNetUnfolder]: 789/1187 cut-off events. [2023-01-27 20:21:48,972 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-01-27 20:21:48,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2684 conditions, 1187 events. 789/1187 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1086 useless extension candidates. Maximal degree in co-relation 2677. Up to 1185 conditions per place. [2023-01-27 20:21:48,977 INFO L137 encePairwiseOnDemand]: 1059/1064 looper letters, 41 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-01-27 20:21:48,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 214 flow [2023-01-27 20:21:48,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:21:48,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:21:48,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1724 transitions. [2023-01-27 20:21:48,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050751879699248 [2023-01-27 20:21:48,980 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1724 transitions. [2023-01-27 20:21:48,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1724 transitions. [2023-01-27 20:21:48,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:48,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1724 transitions. [2023-01-27 20:21:48,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:48,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:48,990 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:48,990 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 122 flow. Second operand 4 states and 1724 transitions. [2023-01-27 20:21:48,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 214 flow [2023-01-27 20:21:48,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 208 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-27 20:21:48,992 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 134 flow [2023-01-27 20:21:48,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-01-27 20:21:48,993 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-01-27 20:21:48,993 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 134 flow [2023-01-27 20:21:48,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 427.75) internal successors, (1711), 4 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:48,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:48,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:21:48,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 20:21:48,994 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:21:48,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:48,994 INFO L85 PathProgramCache]: Analyzing trace with hash 917435877, now seen corresponding path program 1 times [2023-01-27 20:21:48,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:48,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771954628] [2023-01-27 20:21:48,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:48,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:21:49,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:49,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771954628] [2023-01-27 20:21:49,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771954628] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:49,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:49,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:21:49,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025412345] [2023-01-27 20:21:49,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:49,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:21:49,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:49,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:21:49,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:21:49,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-01-27 20:21:49,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:49,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:49,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-01-27 20:21:49,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:49,310 INFO L130 PetriNetUnfolder]: 789/1188 cut-off events. [2023-01-27 20:21:49,310 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-01-27 20:21:49,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 1188 events. 789/1188 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1088 useless extension candidates. Maximal degree in co-relation 2684. Up to 1187 conditions per place. [2023-01-27 20:21:49,314 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 43 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-01-27 20:21:49,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 228 flow [2023-01-27 20:21:49,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:21:49,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:21:49,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1735 transitions. [2023-01-27 20:21:49,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40765977443609025 [2023-01-27 20:21:49,318 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1735 transitions. [2023-01-27 20:21:49,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1735 transitions. [2023-01-27 20:21:49,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:49,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1735 transitions. [2023-01-27 20:21:49,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 433.75) internal successors, (1735), 4 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:49,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:49,326 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:49,326 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 134 flow. Second operand 4 states and 1735 transitions. [2023-01-27 20:21:49,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 228 flow [2023-01-27 20:21:49,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 20:21:49,329 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 144 flow [2023-01-27 20:21:49,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-01-27 20:21:49,331 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-01-27 20:21:49,331 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 144 flow [2023-01-27 20:21:49,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:49,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:49,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:21:49,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 20:21:49,333 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:21:49,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:49,333 INFO L85 PathProgramCache]: Analyzing trace with hash -230399429, now seen corresponding path program 1 times [2023-01-27 20:21:49,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:49,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431729858] [2023-01-27 20:21:49,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:49,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:49,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:21:49,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:49,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431729858] [2023-01-27 20:21:49,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431729858] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:21:49,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724517033] [2023-01-27 20:21:49,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:49,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:21:49,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:21:49,550 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:21:49,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 20:21:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:49,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-27 20:21:49,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:21:49,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 20:21:49,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:21:49,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724517033] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:49,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:21:49,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-01-27 20:21:49,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628142660] [2023-01-27 20:21:49,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:49,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:21:49,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:49,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:21:49,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:21:49,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-01-27 20:21:49,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 431.25) internal successors, (1725), 4 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:49,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:49,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-01-27 20:21:49,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:50,064 INFO L130 PetriNetUnfolder]: 789/1189 cut-off events. [2023-01-27 20:21:50,064 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-01-27 20:21:50,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2699 conditions, 1189 events. 789/1189 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1090 useless extension candidates. Maximal degree in co-relation 2690. Up to 1188 conditions per place. [2023-01-27 20:21:50,070 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 44 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-01-27 20:21:50,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 240 flow [2023-01-27 20:21:50,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:21:50,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:21:50,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1735 transitions. [2023-01-27 20:21:50,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40765977443609025 [2023-01-27 20:21:50,073 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1735 transitions. [2023-01-27 20:21:50,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1735 transitions. [2023-01-27 20:21:50,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:50,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1735 transitions. [2023-01-27 20:21:50,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 433.75) internal successors, (1735), 4 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:50,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:50,090 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:50,091 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 144 flow. Second operand 4 states and 1735 transitions. [2023-01-27 20:21:50,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 240 flow [2023-01-27 20:21:50,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 234 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-27 20:21:50,093 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 152 flow [2023-01-27 20:21:50,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-01-27 20:21:50,093 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-01-27 20:21:50,093 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 152 flow [2023-01-27 20:21:50,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 431.25) internal successors, (1725), 4 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:50,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:50,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:21:50,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 20:21:50,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:21:50,300 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:21:50,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:50,300 INFO L85 PathProgramCache]: Analyzing trace with hash 131576679, now seen corresponding path program 1 times [2023-01-27 20:21:50,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:50,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173279866] [2023-01-27 20:21:50,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:50,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:50,622 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-27 20:21:50,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:50,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173279866] [2023-01-27 20:21:50,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173279866] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:50,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:50,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:21:50,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835451082] [2023-01-27 20:21:50,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:50,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:21:50,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:50,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:21:50,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:21:50,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-01-27 20:21:50,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 431.5) internal successors, (1726), 4 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:50,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:50,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-01-27 20:21:50,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:50,785 INFO L130 PetriNetUnfolder]: 789/1190 cut-off events. [2023-01-27 20:21:50,786 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-01-27 20:21:50,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2705 conditions, 1190 events. 789/1190 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4294 event pairs, 641 based on Foata normal form. 0/1092 useless extension candidates. Maximal degree in co-relation 2695. Up to 1189 conditions per place. [2023-01-27 20:21:50,791 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 45 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-01-27 20:21:50,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 250 flow [2023-01-27 20:21:50,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:21:50,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:21:50,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1735 transitions. [2023-01-27 20:21:50,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40765977443609025 [2023-01-27 20:21:50,794 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1735 transitions. [2023-01-27 20:21:50,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1735 transitions. [2023-01-27 20:21:50,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:50,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1735 transitions. [2023-01-27 20:21:50,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 433.75) internal successors, (1735), 4 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:50,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:50,801 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:50,801 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 152 flow. Second operand 4 states and 1735 transitions. [2023-01-27 20:21:50,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 250 flow [2023-01-27 20:21:50,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 244 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-27 20:21:50,804 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 160 flow [2023-01-27 20:21:50,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-01-27 20:21:50,806 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-01-27 20:21:50,806 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 160 flow [2023-01-27 20:21:50,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 431.5) internal successors, (1726), 4 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:50,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:50,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:21:50,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 20:21:50,807 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:21:50,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:50,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1404509908, now seen corresponding path program 1 times [2023-01-27 20:21:50,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:50,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509266189] [2023-01-27 20:21:50,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:50,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:52,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:21:52,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:52,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509266189] [2023-01-27 20:21:52,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509266189] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:52,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:52,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-01-27 20:21:52,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482351903] [2023-01-27 20:21:52,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:52,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 20:21:52,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:52,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 20:21:52,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2023-01-27 20:21:52,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 1064 [2023-01-27 20:21:52,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 160 flow. Second operand has 17 states, 17 states have (on average 338.05882352941177) internal successors, (5747), 17 states have internal predecessors, (5747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:52,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:52,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 1064 [2023-01-27 20:21:52,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:56,010 INFO L130 PetriNetUnfolder]: 2269/3572 cut-off events. [2023-01-27 20:21:56,011 INFO L131 PetriNetUnfolder]: For 382/382 co-relation queries the response was YES. [2023-01-27 20:21:56,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8196 conditions, 3572 events. 2269/3572 cut-off events. For 382/382 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 19020 event pairs, 402 based on Foata normal form. 1/3277 useless extension candidates. Maximal degree in co-relation 8185. Up to 866 conditions per place. [2023-01-27 20:21:56,025 INFO L137 encePairwiseOnDemand]: 1044/1064 looper letters, 194 selfloop transitions, 62 changer transitions 7/263 dead transitions. [2023-01-27 20:21:56,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 263 transitions, 1256 flow [2023-01-27 20:21:56,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-27 20:21:56,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-27 20:21:56,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7307 transitions. [2023-01-27 20:21:56,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32702291442892945 [2023-01-27 20:21:56,039 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7307 transitions. [2023-01-27 20:21:56,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7307 transitions. [2023-01-27 20:21:56,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:56,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7307 transitions. [2023-01-27 20:21:56,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 347.95238095238096) internal successors, (7307), 21 states have internal predecessors, (7307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:56,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:56,078 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:56,078 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 160 flow. Second operand 21 states and 7307 transitions. [2023-01-27 20:21:56,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 263 transitions, 1256 flow [2023-01-27 20:21:56,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 263 transitions, 1250 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-27 20:21:56,087 INFO L231 Difference]: Finished difference. Result has 83 places, 116 transitions, 633 flow [2023-01-27 20:21:56,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=633, PETRI_PLACES=83, PETRI_TRANSITIONS=116} [2023-01-27 20:21:56,088 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2023-01-27 20:21:56,088 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 116 transitions, 633 flow [2023-01-27 20:21:56,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 338.05882352941177) internal successors, (5747), 17 states have internal predecessors, (5747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:56,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:56,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:21:56,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 20:21:56,090 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:21:56,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:56,090 INFO L85 PathProgramCache]: Analyzing trace with hash -2043930938, now seen corresponding path program 2 times [2023-01-27 20:21:56,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:56,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061982901] [2023-01-27 20:21:56,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:56,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:57,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:21:57,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:57,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061982901] [2023-01-27 20:21:57,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061982901] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:57,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:57,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 20:21:57,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41755534] [2023-01-27 20:21:57,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:57,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:21:57,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:57,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:21:57,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:21:57,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 1064 [2023-01-27 20:21:57,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 116 transitions, 633 flow. Second operand has 11 states, 11 states have (on average 372.1818181818182) internal successors, (4094), 11 states have internal predecessors, (4094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:57,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:57,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 1064 [2023-01-27 20:21:57,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:59,540 INFO L130 PetriNetUnfolder]: 5246/8500 cut-off events. [2023-01-27 20:21:59,540 INFO L131 PetriNetUnfolder]: For 13035/13035 co-relation queries the response was YES. [2023-01-27 20:21:59,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29269 conditions, 8500 events. 5246/8500 cut-off events. For 13035/13035 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 55536 event pairs, 886 based on Foata normal form. 1/8500 useless extension candidates. Maximal degree in co-relation 29246. Up to 2730 conditions per place. [2023-01-27 20:21:59,593 INFO L137 encePairwiseOnDemand]: 1047/1064 looper letters, 295 selfloop transitions, 221 changer transitions 7/523 dead transitions. [2023-01-27 20:21:59,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 523 transitions, 3808 flow [2023-01-27 20:21:59,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-27 20:21:59,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-27 20:21:59,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7983 transitions. [2023-01-27 20:21:59,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3572771213748657 [2023-01-27 20:21:59,607 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7983 transitions. [2023-01-27 20:21:59,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7983 transitions. [2023-01-27 20:21:59,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:59,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7983 transitions. [2023-01-27 20:21:59,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 380.14285714285717) internal successors, (7983), 21 states have internal predecessors, (7983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:59,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:59,634 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:59,634 INFO L175 Difference]: Start difference. First operand has 83 places, 116 transitions, 633 flow. Second operand 21 states and 7983 transitions. [2023-01-27 20:21:59,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 523 transitions, 3808 flow [2023-01-27 20:21:59,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 523 transitions, 3791 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-01-27 20:22:00,017 INFO L231 Difference]: Finished difference. Result has 114 places, 353 transitions, 2987 flow [2023-01-27 20:22:00,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2987, PETRI_PLACES=114, PETRI_TRANSITIONS=353} [2023-01-27 20:22:00,018 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2023-01-27 20:22:00,018 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 353 transitions, 2987 flow [2023-01-27 20:22:00,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 372.1818181818182) internal successors, (4094), 11 states have internal predecessors, (4094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:00,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:00,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:00,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 20:22:00,020 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:22:00,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:00,020 INFO L85 PathProgramCache]: Analyzing trace with hash 438698926, now seen corresponding path program 3 times [2023-01-27 20:22:00,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:00,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586609850] [2023-01-27 20:22:00,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:00,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:01,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:22:01,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:01,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586609850] [2023-01-27 20:22:01,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586609850] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:01,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:01,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:22:01,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798429307] [2023-01-27 20:22:01,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:01,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:22:01,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:01,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:22:01,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:22:01,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-27 20:22:01,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 353 transitions, 2987 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:01,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:01,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-27 20:22:01,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:02,783 INFO L130 PetriNetUnfolder]: 6096/10078 cut-off events. [2023-01-27 20:22:02,784 INFO L131 PetriNetUnfolder]: For 37061/37061 co-relation queries the response was YES. [2023-01-27 20:22:02,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45605 conditions, 10078 events. 6096/10078 cut-off events. For 37061/37061 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 69059 event pairs, 1289 based on Foata normal form. 1/10078 useless extension candidates. Maximal degree in co-relation 45568. Up to 4742 conditions per place. [2023-01-27 20:22:02,859 INFO L137 encePairwiseOnDemand]: 1056/1064 looper letters, 606 selfloop transitions, 77 changer transitions 7/690 dead transitions. [2023-01-27 20:22:02,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 690 transitions, 7251 flow [2023-01-27 20:22:02,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:22:02,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:22:02,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3613 transitions. [2023-01-27 20:22:02,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.377297410192147 [2023-01-27 20:22:02,864 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3613 transitions. [2023-01-27 20:22:02,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3613 transitions. [2023-01-27 20:22:02,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:02,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3613 transitions. [2023-01-27 20:22:02,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 401.44444444444446) internal successors, (3613), 9 states have internal predecessors, (3613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:02,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:02,891 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:02,891 INFO L175 Difference]: Start difference. First operand has 114 places, 353 transitions, 2987 flow. Second operand 9 states and 3613 transitions. [2023-01-27 20:22:02,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 690 transitions, 7251 flow [2023-01-27 20:22:03,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 690 transitions, 7177 flow, removed 37 selfloop flow, removed 1 redundant places. [2023-01-27 20:22:03,392 INFO L231 Difference]: Finished difference. Result has 127 places, 363 transitions, 3275 flow [2023-01-27 20:22:03,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=2943, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3275, PETRI_PLACES=127, PETRI_TRANSITIONS=363} [2023-01-27 20:22:03,393 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2023-01-27 20:22:03,393 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 363 transitions, 3275 flow [2023-01-27 20:22:03,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:03,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:03,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:03,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 20:22:03,394 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:22:03,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:03,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1462585081, now seen corresponding path program 1 times [2023-01-27 20:22:03,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:03,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560195610] [2023-01-27 20:22:03,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:03,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:22:03,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:03,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560195610] [2023-01-27 20:22:03,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560195610] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:03,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:03,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:22:03,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970266716] [2023-01-27 20:22:03,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:03,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:22:03,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:03,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:22:03,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:22:03,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 425 out of 1064 [2023-01-27 20:22:03,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 363 transitions, 3275 flow. Second operand has 3 states, 3 states have (on average 436.6666666666667) internal successors, (1310), 3 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:03,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:03,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 425 of 1064 [2023-01-27 20:22:03,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:06,194 INFO L130 PetriNetUnfolder]: 7129/12371 cut-off events. [2023-01-27 20:22:06,194 INFO L131 PetriNetUnfolder]: For 50717/50717 co-relation queries the response was YES. [2023-01-27 20:22:06,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56389 conditions, 12371 events. 7129/12371 cut-off events. For 50717/50717 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 94297 event pairs, 2708 based on Foata normal form. 181/12551 useless extension candidates. Maximal degree in co-relation 56345. Up to 8320 conditions per place. [2023-01-27 20:22:06,344 INFO L137 encePairwiseOnDemand]: 1061/1064 looper letters, 502 selfloop transitions, 37 changer transitions 0/539 dead transitions. [2023-01-27 20:22:06,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 539 transitions, 5981 flow [2023-01-27 20:22:06,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:22:06,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:22:06,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1335 transitions. [2023-01-27 20:22:06,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4182330827067669 [2023-01-27 20:22:06,348 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1335 transitions. [2023-01-27 20:22:06,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1335 transitions. [2023-01-27 20:22:06,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:06,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1335 transitions. [2023-01-27 20:22:06,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 445.0) internal successors, (1335), 3 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:06,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:06,354 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:06,354 INFO L175 Difference]: Start difference. First operand has 127 places, 363 transitions, 3275 flow. Second operand 3 states and 1335 transitions. [2023-01-27 20:22:06,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 539 transitions, 5981 flow [2023-01-27 20:22:06,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 539 transitions, 5860 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-01-27 20:22:06,983 INFO L231 Difference]: Finished difference. Result has 127 places, 369 transitions, 3389 flow [2023-01-27 20:22:06,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=3202, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3389, PETRI_PLACES=127, PETRI_TRANSITIONS=369} [2023-01-27 20:22:06,984 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2023-01-27 20:22:06,984 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 369 transitions, 3389 flow [2023-01-27 20:22:06,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 436.6666666666667) internal successors, (1310), 3 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:06,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:06,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:06,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 20:22:06,985 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:22:06,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:06,985 INFO L85 PathProgramCache]: Analyzing trace with hash 2026890830, now seen corresponding path program 4 times [2023-01-27 20:22:06,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:06,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918385701] [2023-01-27 20:22:06,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:06,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:07,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:22:07,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:07,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918385701] [2023-01-27 20:22:07,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918385701] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:07,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:07,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 20:22:07,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124134673] [2023-01-27 20:22:07,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:07,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:22:07,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:07,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:22:07,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-01-27 20:22:07,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 371 out of 1064 [2023-01-27 20:22:07,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 369 transitions, 3389 flow. Second operand has 12 states, 12 states have (on average 373.9166666666667) internal successors, (4487), 12 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:07,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:07,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 371 of 1064 [2023-01-27 20:22:07,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:10,950 INFO L130 PetriNetUnfolder]: 8219/14587 cut-off events. [2023-01-27 20:22:10,952 INFO L131 PetriNetUnfolder]: For 56399/56399 co-relation queries the response was YES. [2023-01-27 20:22:11,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66673 conditions, 14587 events. 8219/14587 cut-off events. For 56399/56399 co-relation queries the response was YES. Maximal size of possible extension queue 938. Compared 117520 event pairs, 1221 based on Foata normal form. 2/14588 useless extension candidates. Maximal degree in co-relation 66629. Up to 6191 conditions per place. [2023-01-27 20:22:11,268 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 659 selfloop transitions, 78 changer transitions 7/744 dead transitions. [2023-01-27 20:22:11,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 744 transitions, 8186 flow [2023-01-27 20:22:11,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 20:22:11,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 20:22:11,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4230 transitions. [2023-01-27 20:22:11,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3614149008885851 [2023-01-27 20:22:11,282 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4230 transitions. [2023-01-27 20:22:11,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4230 transitions. [2023-01-27 20:22:11,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:11,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4230 transitions. [2023-01-27 20:22:11,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 384.54545454545456) internal successors, (4230), 11 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:11,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:11,332 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:11,332 INFO L175 Difference]: Start difference. First operand has 127 places, 369 transitions, 3389 flow. Second operand 11 states and 4230 transitions. [2023-01-27 20:22:11,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 744 transitions, 8186 flow [2023-01-27 20:22:12,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 744 transitions, 8107 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:22:12,433 INFO L231 Difference]: Finished difference. Result has 142 places, 380 transitions, 3717 flow [2023-01-27 20:22:12,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=3352, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3717, PETRI_PLACES=142, PETRI_TRANSITIONS=380} [2023-01-27 20:22:12,435 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 100 predicate places. [2023-01-27 20:22:12,435 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 380 transitions, 3717 flow [2023-01-27 20:22:12,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 373.9166666666667) internal successors, (4487), 12 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:12,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:12,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:12,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-27 20:22:12,449 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:22:12,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:12,450 INFO L85 PathProgramCache]: Analyzing trace with hash -605776418, now seen corresponding path program 5 times [2023-01-27 20:22:12,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:12,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284016156] [2023-01-27 20:22:12,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:12,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:13,432 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:22:13,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:13,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284016156] [2023-01-27 20:22:13,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284016156] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:13,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:13,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:22:13,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098507334] [2023-01-27 20:22:13,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:13,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:22:13,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:13,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:22:13,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:22:13,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-27 20:22:13,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 380 transitions, 3717 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:13,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:13,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-27 20:22:13,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:17,139 INFO L130 PetriNetUnfolder]: 8453/15378 cut-off events. [2023-01-27 20:22:17,139 INFO L131 PetriNetUnfolder]: For 71719/71719 co-relation queries the response was YES. [2023-01-27 20:22:17,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72155 conditions, 15378 events. 8453/15378 cut-off events. For 71719/71719 co-relation queries the response was YES. Maximal size of possible extension queue 1007. Compared 128508 event pairs, 2359 based on Foata normal form. 1/15378 useless extension candidates. Maximal degree in co-relation 72105. Up to 7695 conditions per place. [2023-01-27 20:22:17,381 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 476 selfloop transitions, 48 changer transitions 8/532 dead transitions. [2023-01-27 20:22:17,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 532 transitions, 6034 flow [2023-01-27 20:22:17,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:22:17,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:22:17,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3615 transitions. [2023-01-27 20:22:17,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3775062656641604 [2023-01-27 20:22:17,393 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3615 transitions. [2023-01-27 20:22:17,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3615 transitions. [2023-01-27 20:22:17,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:17,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3615 transitions. [2023-01-27 20:22:17,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 401.6666666666667) internal successors, (3615), 9 states have internal predecessors, (3615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:17,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:17,421 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:17,421 INFO L175 Difference]: Start difference. First operand has 142 places, 380 transitions, 3717 flow. Second operand 9 states and 3615 transitions. [2023-01-27 20:22:17,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 532 transitions, 6034 flow [2023-01-27 20:22:18,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 532 transitions, 5973 flow, removed 22 selfloop flow, removed 4 redundant places. [2023-01-27 20:22:18,339 INFO L231 Difference]: Finished difference. Result has 150 places, 394 transitions, 3979 flow [2023-01-27 20:22:18,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=3690, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3979, PETRI_PLACES=150, PETRI_TRANSITIONS=394} [2023-01-27 20:22:18,344 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 108 predicate places. [2023-01-27 20:22:18,344 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 394 transitions, 3979 flow [2023-01-27 20:22:18,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:18,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:18,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:18,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-27 20:22:18,345 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:22:18,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:18,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1165735616, now seen corresponding path program 6 times [2023-01-27 20:22:18,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:18,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602983797] [2023-01-27 20:22:18,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:18,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:19,279 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:22:19,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:19,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602983797] [2023-01-27 20:22:19,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602983797] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:19,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:19,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:22:19,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085848568] [2023-01-27 20:22:19,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:19,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:22:19,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:19,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:22:19,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:22:19,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 1064 [2023-01-27 20:22:19,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 394 transitions, 3979 flow. Second operand has 13 states, 13 states have (on average 367.6923076923077) internal successors, (4780), 13 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:19,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:19,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 1064 [2023-01-27 20:22:19,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:25,154 INFO L130 PetriNetUnfolder]: 14218/26052 cut-off events. [2023-01-27 20:22:25,155 INFO L131 PetriNetUnfolder]: For 135566/135566 co-relation queries the response was YES. [2023-01-27 20:22:25,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124384 conditions, 26052 events. 14218/26052 cut-off events. For 135566/135566 co-relation queries the response was YES. Maximal size of possible extension queue 1732. Compared 237832 event pairs, 5116 based on Foata normal form. 2/26053 useless extension candidates. Maximal degree in co-relation 124330. Up to 12972 conditions per place. [2023-01-27 20:22:25,785 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 845 selfloop transitions, 76 changer transitions 7/928 dead transitions. [2023-01-27 20:22:25,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 928 transitions, 11055 flow [2023-01-27 20:22:25,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:22:25,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:22:25,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3804 transitions. [2023-01-27 20:22:25,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575187969924812 [2023-01-27 20:22:25,812 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3804 transitions. [2023-01-27 20:22:25,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3804 transitions. [2023-01-27 20:22:25,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:25,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3804 transitions. [2023-01-27 20:22:25,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 380.4) internal successors, (3804), 10 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:25,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:25,821 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:25,821 INFO L175 Difference]: Start difference. First operand has 150 places, 394 transitions, 3979 flow. Second operand 10 states and 3804 transitions. [2023-01-27 20:22:25,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 928 transitions, 11055 flow [2023-01-27 20:22:27,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 928 transitions, 10907 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-01-27 20:22:27,851 INFO L231 Difference]: Finished difference. Result has 162 places, 454 transitions, 5059 flow [2023-01-27 20:22:27,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=3904, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5059, PETRI_PLACES=162, PETRI_TRANSITIONS=454} [2023-01-27 20:22:27,851 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 120 predicate places. [2023-01-27 20:22:27,851 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 454 transitions, 5059 flow [2023-01-27 20:22:27,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 367.6923076923077) internal successors, (4780), 13 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:27,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:27,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:27,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-27 20:22:27,852 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:22:27,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:27,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1788906114, now seen corresponding path program 7 times [2023-01-27 20:22:27,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:27,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232777031] [2023-01-27 20:22:27,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:27,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:28,664 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:22:28,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:28,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232777031] [2023-01-27 20:22:28,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232777031] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:28,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:28,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:22:28,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377234962] [2023-01-27 20:22:28,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:28,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:22:28,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:28,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:22:28,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:22:28,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-27 20:22:28,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 454 transitions, 5059 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:28,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:28,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-27 20:22:28,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:35,825 INFO L130 PetriNetUnfolder]: 15648/28811 cut-off events. [2023-01-27 20:22:35,825 INFO L131 PetriNetUnfolder]: For 176467/176467 co-relation queries the response was YES. [2023-01-27 20:22:36,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142018 conditions, 28811 events. 15648/28811 cut-off events. For 176467/176467 co-relation queries the response was YES. Maximal size of possible extension queue 1901. Compared 268566 event pairs, 4073 based on Foata normal form. 1/28811 useless extension candidates. Maximal degree in co-relation 141958. Up to 14575 conditions per place. [2023-01-27 20:22:36,255 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 610 selfloop transitions, 69 changer transitions 8/687 dead transitions. [2023-01-27 20:22:36,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 687 transitions, 8629 flow [2023-01-27 20:22:36,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:22:36,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:22:36,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3631 transitions. [2023-01-27 20:22:36,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37917710944026733 [2023-01-27 20:22:36,264 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3631 transitions. [2023-01-27 20:22:36,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3631 transitions. [2023-01-27 20:22:36,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:36,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3631 transitions. [2023-01-27 20:22:36,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.44444444444446) internal successors, (3631), 9 states have internal predecessors, (3631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:36,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:36,274 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:36,274 INFO L175 Difference]: Start difference. First operand has 162 places, 454 transitions, 5059 flow. Second operand 9 states and 3631 transitions. [2023-01-27 20:22:36,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 687 transitions, 8629 flow [2023-01-27 20:22:39,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 687 transitions, 8535 flow, removed 38 selfloop flow, removed 3 redundant places. [2023-01-27 20:22:39,144 INFO L231 Difference]: Finished difference. Result has 172 places, 480 transitions, 5549 flow [2023-01-27 20:22:39,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=5005, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5549, PETRI_PLACES=172, PETRI_TRANSITIONS=480} [2023-01-27 20:22:39,144 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 130 predicate places. [2023-01-27 20:22:39,145 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 480 transitions, 5549 flow [2023-01-27 20:22:39,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:39,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:39,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:39,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-27 20:22:39,145 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:22:39,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:39,146 INFO L85 PathProgramCache]: Analyzing trace with hash 977259368, now seen corresponding path program 8 times [2023-01-27 20:22:39,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:39,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524801790] [2023-01-27 20:22:39,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:39,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:22:40,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:40,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524801790] [2023-01-27 20:22:40,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524801790] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:40,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:40,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 20:22:40,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872662162] [2023-01-27 20:22:40,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:40,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 20:22:40,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:40,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 20:22:40,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-01-27 20:22:40,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 1064 [2023-01-27 20:22:40,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 480 transitions, 5549 flow. Second operand has 15 states, 15 states have (on average 349.3333333333333) internal successors, (5240), 15 states have internal predecessors, (5240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:40,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:40,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 1064 [2023-01-27 20:22:40,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:49,849 INFO L130 PetriNetUnfolder]: 18518/34214 cut-off events. [2023-01-27 20:22:49,849 INFO L131 PetriNetUnfolder]: For 225443/225443 co-relation queries the response was YES. [2023-01-27 20:22:50,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172078 conditions, 34214 events. 18518/34214 cut-off events. For 225443/225443 co-relation queries the response was YES. Maximal size of possible extension queue 2270. Compared 328469 event pairs, 4128 based on Foata normal form. 4/34217 useless extension candidates. Maximal degree in co-relation 172013. Up to 9992 conditions per place. [2023-01-27 20:22:50,406 INFO L137 encePairwiseOnDemand]: 1047/1064 looper letters, 578 selfloop transitions, 600 changer transitions 8/1186 dead transitions. [2023-01-27 20:22:50,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 1186 transitions, 14932 flow [2023-01-27 20:22:50,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-27 20:22:50,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-27 20:22:50,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7546 transitions. [2023-01-27 20:22:50,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33771929824561403 [2023-01-27 20:22:50,428 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7546 transitions. [2023-01-27 20:22:50,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7546 transitions. [2023-01-27 20:22:50,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:50,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7546 transitions. [2023-01-27 20:22:50,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 359.3333333333333) internal successors, (7546), 21 states have internal predecessors, (7546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:50,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:50,468 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:50,468 INFO L175 Difference]: Start difference. First operand has 172 places, 480 transitions, 5549 flow. Second operand 21 states and 7546 transitions. [2023-01-27 20:22:50,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 1186 transitions, 14932 flow [2023-01-27 20:22:53,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 1186 transitions, 14698 flow, removed 39 selfloop flow, removed 3 redundant places. [2023-01-27 20:22:53,942 INFO L231 Difference]: Finished difference. Result has 201 places, 844 transitions, 11876 flow [2023-01-27 20:22:53,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=5437, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=11876, PETRI_PLACES=201, PETRI_TRANSITIONS=844} [2023-01-27 20:22:53,943 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 159 predicate places. [2023-01-27 20:22:53,943 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 844 transitions, 11876 flow [2023-01-27 20:22:53,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 349.3333333333333) internal successors, (5240), 15 states have internal predecessors, (5240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:53,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:53,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:53,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-27 20:22:53,944 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:22:53,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:53,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1362034862, now seen corresponding path program 9 times [2023-01-27 20:22:53,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:53,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885305242] [2023-01-27 20:22:53,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:53,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:54,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:22:54,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:54,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885305242] [2023-01-27 20:22:54,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885305242] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:54,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:54,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:22:54,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214776491] [2023-01-27 20:22:54,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:54,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:22:54,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:54,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:22:54,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:22:54,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-27 20:22:54,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 844 transitions, 11876 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:54,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:54,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-27 20:22:54,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:05,811 INFO L130 PetriNetUnfolder]: 20471/37978 cut-off events. [2023-01-27 20:23:05,811 INFO L131 PetriNetUnfolder]: For 366447/366447 co-relation queries the response was YES. [2023-01-27 20:23:06,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218306 conditions, 37978 events. 20471/37978 cut-off events. For 366447/366447 co-relation queries the response was YES. Maximal size of possible extension queue 2499. Compared 370305 event pairs, 6191 based on Foata normal form. 1/37978 useless extension candidates. Maximal degree in co-relation 218229. Up to 18558 conditions per place. [2023-01-27 20:23:06,515 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 1062 selfloop transitions, 95 changer transitions 7/1164 dead transitions. [2023-01-27 20:23:06,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 1164 transitions, 17871 flow [2023-01-27 20:23:06,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:23:06,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:23:06,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3643 transitions. [2023-01-27 20:23:06,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38043024227234756 [2023-01-27 20:23:06,520 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3643 transitions. [2023-01-27 20:23:06,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3643 transitions. [2023-01-27 20:23:06,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:06,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3643 transitions. [2023-01-27 20:23:06,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 404.77777777777777) internal successors, (3643), 9 states have internal predecessors, (3643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:06,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:06,555 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:06,555 INFO L175 Difference]: Start difference. First operand has 201 places, 844 transitions, 11876 flow. Second operand 9 states and 3643 transitions. [2023-01-27 20:23:06,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 1164 transitions, 17871 flow [2023-01-27 20:23:15,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 1164 transitions, 17622 flow, removed 100 selfloop flow, removed 3 redundant places. [2023-01-27 20:23:15,269 INFO L231 Difference]: Finished difference. Result has 212 places, 872 transitions, 12483 flow [2023-01-27 20:23:15,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=11722, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=844, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=763, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12483, PETRI_PLACES=212, PETRI_TRANSITIONS=872} [2023-01-27 20:23:15,270 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 170 predicate places. [2023-01-27 20:23:15,270 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 872 transitions, 12483 flow [2023-01-27 20:23:15,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:15,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:15,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:15,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-27 20:23:15,271 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:23:15,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:15,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1669446438, now seen corresponding path program 10 times [2023-01-27 20:23:15,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:15,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64230296] [2023-01-27 20:23:15,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:15,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:15,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:23:15,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:15,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64230296] [2023-01-27 20:23:15,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64230296] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:23:15,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:23:15,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:23:15,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270475028] [2023-01-27 20:23:15,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:23:15,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:23:15,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:15,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:23:15,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:23:15,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 1064 [2023-01-27 20:23:15,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 872 transitions, 12483 flow. Second operand has 13 states, 13 states have (on average 367.6923076923077) internal successors, (4780), 13 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:15,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:15,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 1064 [2023-01-27 20:23:15,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:27,933 INFO L130 PetriNetUnfolder]: 20493/38039 cut-off events. [2023-01-27 20:23:27,933 INFO L131 PetriNetUnfolder]: For 386924/386924 co-relation queries the response was YES. [2023-01-27 20:23:28,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221603 conditions, 38039 events. 20493/38039 cut-off events. For 386924/386924 co-relation queries the response was YES. Maximal size of possible extension queue 2508. Compared 371577 event pairs, 6893 based on Foata normal form. 2/38040 useless extension candidates. Maximal degree in co-relation 221520. Up to 16626 conditions per place. [2023-01-27 20:23:28,966 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1118 selfloop transitions, 72 changer transitions 8/1198 dead transitions. [2023-01-27 20:23:28,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 1198 transitions, 18917 flow [2023-01-27 20:23:28,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:23:28,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:23:28,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3802 transitions. [2023-01-27 20:23:28,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35733082706766917 [2023-01-27 20:23:28,971 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3802 transitions. [2023-01-27 20:23:28,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3802 transitions. [2023-01-27 20:23:28,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:28,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3802 transitions. [2023-01-27 20:23:28,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 380.2) internal successors, (3802), 10 states have internal predecessors, (3802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:29,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:29,005 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:29,005 INFO L175 Difference]: Start difference. First operand has 212 places, 872 transitions, 12483 flow. Second operand 10 states and 3802 transitions. [2023-01-27 20:23:29,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 1198 transitions, 18917 flow [2023-01-27 20:23:36,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 1198 transitions, 18619 flow, removed 81 selfloop flow, removed 2 redundant places. [2023-01-27 20:23:36,677 INFO L231 Difference]: Finished difference. Result has 224 places, 888 transitions, 12904 flow [2023-01-27 20:23:36,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=12345, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=872, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=801, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12904, PETRI_PLACES=224, PETRI_TRANSITIONS=888} [2023-01-27 20:23:36,679 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 182 predicate places. [2023-01-27 20:23:36,679 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 888 transitions, 12904 flow [2023-01-27 20:23:36,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 367.6923076923077) internal successors, (4780), 13 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:36,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:36,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:36,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-27 20:23:36,680 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:23:36,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:36,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1563823200, now seen corresponding path program 11 times [2023-01-27 20:23:36,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:36,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912075550] [2023-01-27 20:23:36,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:36,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:37,513 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:23:37,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:37,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912075550] [2023-01-27 20:23:37,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912075550] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:23:37,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:23:37,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:23:37,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081014429] [2023-01-27 20:23:37,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:23:37,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:23:37,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:37,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:23:37,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:23:37,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-27 20:23:37,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 888 transitions, 12904 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:37,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:37,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-27 20:23:37,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:54,241 INFO L130 PetriNetUnfolder]: 26490/49576 cut-off events. [2023-01-27 20:23:54,245 INFO L131 PetriNetUnfolder]: For 525377/525377 co-relation queries the response was YES. [2023-01-27 20:23:55,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290463 conditions, 49576 events. 26490/49576 cut-off events. For 525377/525377 co-relation queries the response was YES. Maximal size of possible extension queue 3334. Compared 507995 event pairs, 10421 based on Foata normal form. 1/49576 useless extension candidates. Maximal degree in co-relation 290375. Up to 28414 conditions per place. [2023-01-27 20:23:55,646 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1360 selfloop transitions, 113 changer transitions 7/1480 dead transitions. [2023-01-27 20:23:55,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 1480 transitions, 23963 flow [2023-01-27 20:23:55,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:23:55,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:23:55,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3635 transitions. [2023-01-27 20:23:55,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3795948203842941 [2023-01-27 20:23:55,650 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3635 transitions. [2023-01-27 20:23:55,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3635 transitions. [2023-01-27 20:23:55,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:55,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3635 transitions. [2023-01-27 20:23:55,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.8888888888889) internal successors, (3635), 9 states have internal predecessors, (3635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:55,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:55,681 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:55,681 INFO L175 Difference]: Start difference. First operand has 224 places, 888 transitions, 12904 flow. Second operand 9 states and 3635 transitions. [2023-01-27 20:23:55,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 1480 transitions, 23963 flow [2023-01-27 20:24:10,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 1480 transitions, 23854 flow, removed 22 selfloop flow, removed 4 redundant places. [2023-01-27 20:24:10,761 INFO L231 Difference]: Finished difference. Result has 234 places, 942 transitions, 14256 flow [2023-01-27 20:24:10,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=12831, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=888, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=777, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14256, PETRI_PLACES=234, PETRI_TRANSITIONS=942} [2023-01-27 20:24:10,763 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 192 predicate places. [2023-01-27 20:24:10,763 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 942 transitions, 14256 flow [2023-01-27 20:24:10,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:10,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:24:10,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:24:10,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-27 20:24:10,764 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:24:10,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:24:10,764 INFO L85 PathProgramCache]: Analyzing trace with hash -984770268, now seen corresponding path program 12 times [2023-01-27 20:24:10,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:24:10,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708752447] [2023-01-27 20:24:10,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:24:10,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:24:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:24:11,674 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:24:11,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:24:11,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708752447] [2023-01-27 20:24:11,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708752447] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:24:11,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:24:11,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:24:11,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175915724] [2023-01-27 20:24:11,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:24:11,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:24:11,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:24:11,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:24:11,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:24:11,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-27 20:24:11,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 942 transitions, 14256 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:11,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:24:11,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-27 20:24:11,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:24:29,043 INFO L130 PetriNetUnfolder]: 26489/49567 cut-off events. [2023-01-27 20:24:29,043 INFO L131 PetriNetUnfolder]: For 564938/564938 co-relation queries the response was YES. [2023-01-27 20:24:29,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294874 conditions, 49567 events. 26489/49567 cut-off events. For 564938/564938 co-relation queries the response was YES. Maximal size of possible extension queue 3304. Compared 507034 event pairs, 10655 based on Foata normal form. 1/49567 useless extension candidates. Maximal degree in co-relation 294780. Up to 28414 conditions per place. [2023-01-27 20:24:30,403 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1256 selfloop transitions, 176 changer transitions 8/1440 dead transitions. [2023-01-27 20:24:30,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 1440 transitions, 23971 flow [2023-01-27 20:24:30,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:24:30,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:24:30,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3624 transitions. [2023-01-27 20:24:30,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37844611528822053 [2023-01-27 20:24:30,407 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3624 transitions. [2023-01-27 20:24:30,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3624 transitions. [2023-01-27 20:24:30,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:24:30,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3624 transitions. [2023-01-27 20:24:30,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 402.6666666666667) internal successors, (3624), 9 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:30,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:30,444 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:30,455 INFO L175 Difference]: Start difference. First operand has 234 places, 942 transitions, 14256 flow. Second operand 9 states and 3624 transitions. [2023-01-27 20:24:30,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 1440 transitions, 23971 flow [2023-01-27 20:24:45,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 1440 transitions, 23859 flow, removed 56 selfloop flow, removed 1 redundant places. [2023-01-27 20:24:45,181 INFO L231 Difference]: Finished difference. Result has 246 places, 1010 transitions, 15941 flow [2023-01-27 20:24:45,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=14196, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=810, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15941, PETRI_PLACES=246, PETRI_TRANSITIONS=1010} [2023-01-27 20:24:45,182 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 204 predicate places. [2023-01-27 20:24:45,182 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 1010 transitions, 15941 flow [2023-01-27 20:24:45,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:45,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:24:45,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:24:45,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-27 20:24:45,183 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:24:45,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:24:45,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1999783334, now seen corresponding path program 13 times [2023-01-27 20:24:45,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:24:45,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656842528] [2023-01-27 20:24:45,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:24:45,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:24:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:24:45,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:24:45,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:24:45,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656842528] [2023-01-27 20:24:45,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656842528] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:24:45,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:24:45,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:24:45,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8618814] [2023-01-27 20:24:45,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:24:45,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:24:45,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:24:45,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:24:45,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:24:45,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-27 20:24:45,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 1010 transitions, 15941 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:45,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:24:45,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-27 20:24:45,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:25:05,060 INFO L130 PetriNetUnfolder]: 27658/51752 cut-off events. [2023-01-27 20:25:05,060 INFO L131 PetriNetUnfolder]: For 605019/605019 co-relation queries the response was YES. [2023-01-27 20:25:06,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310774 conditions, 51752 events. 27658/51752 cut-off events. For 605019/605019 co-relation queries the response was YES. Maximal size of possible extension queue 3469. Compared 533021 event pairs, 10518 based on Foata normal form. 1/51752 useless extension candidates. Maximal degree in co-relation 310674. Up to 28475 conditions per place. [2023-01-27 20:25:06,326 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1380 selfloop transitions, 179 changer transitions 7/1566 dead transitions. [2023-01-27 20:25:06,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 1566 transitions, 26504 flow [2023-01-27 20:25:06,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:25:06,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:25:06,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3640 transitions. [2023-01-27 20:25:06,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38011695906432746 [2023-01-27 20:25:06,329 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3640 transitions. [2023-01-27 20:25:06,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3640 transitions. [2023-01-27 20:25:06,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:25:06,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3640 transitions. [2023-01-27 20:25:06,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 404.44444444444446) internal successors, (3640), 9 states have internal predecessors, (3640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:06,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:06,336 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:06,336 INFO L175 Difference]: Start difference. First operand has 246 places, 1010 transitions, 15941 flow. Second operand 9 states and 3640 transitions. [2023-01-27 20:25:06,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 1566 transitions, 26504 flow [2023-01-27 20:25:24,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 1566 transitions, 26229 flow, removed 69 selfloop flow, removed 2 redundant places. [2023-01-27 20:25:24,147 INFO L231 Difference]: Finished difference. Result has 256 places, 1038 transitions, 16780 flow [2023-01-27 20:25:24,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=15709, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1010, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=846, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16780, PETRI_PLACES=256, PETRI_TRANSITIONS=1038} [2023-01-27 20:25:24,149 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 214 predicate places. [2023-01-27 20:25:24,149 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 1038 transitions, 16780 flow [2023-01-27 20:25:24,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:24,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:25:24,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:25:24,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-27 20:25:24,149 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:25:24,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:25:24,151 INFO L85 PathProgramCache]: Analyzing trace with hash 178866192, now seen corresponding path program 14 times [2023-01-27 20:25:24,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:25:24,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261441131] [2023-01-27 20:25:24,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:25:24,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:25:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:25:24,769 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:25:24,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:25:24,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261441131] [2023-01-27 20:25:24,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261441131] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:25:24,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:25:24,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:25:24,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76670326] [2023-01-27 20:25:24,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:25:24,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:25:24,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:25:24,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:25:24,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:25:24,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-27 20:25:24,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 1038 transitions, 16780 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:24,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:25:24,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-27 20:25:24,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:25:43,997 INFO L130 PetriNetUnfolder]: 27657/51743 cut-off events. [2023-01-27 20:25:43,997 INFO L131 PetriNetUnfolder]: For 624318/624318 co-relation queries the response was YES. [2023-01-27 20:25:45,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312034 conditions, 51743 events. 27657/51743 cut-off events. For 624318/624318 co-relation queries the response was YES. Maximal size of possible extension queue 3489. Compared 532246 event pairs, 11057 based on Foata normal form. 1/51743 useless extension candidates. Maximal degree in co-relation 311930. Up to 28475 conditions per place. [2023-01-27 20:25:45,279 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1267 selfloop transitions, 197 changer transitions 7/1471 dead transitions. [2023-01-27 20:25:45,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 1471 transitions, 25457 flow [2023-01-27 20:25:45,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:25:45,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:25:45,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3627 transitions. [2023-01-27 20:25:45,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37875939849624063 [2023-01-27 20:25:45,283 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3627 transitions. [2023-01-27 20:25:45,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3627 transitions. [2023-01-27 20:25:45,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:25:45,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3627 transitions. [2023-01-27 20:25:45,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.0) internal successors, (3627), 9 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:45,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:45,290 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:45,290 INFO L175 Difference]: Start difference. First operand has 256 places, 1038 transitions, 16780 flow. Second operand 9 states and 3627 transitions. [2023-01-27 20:25:45,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 1471 transitions, 25457 flow [2023-01-27 20:26:01,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 1471 transitions, 25137 flow, removed 47 selfloop flow, removed 3 redundant places. [2023-01-27 20:26:01,584 INFO L231 Difference]: Finished difference. Result has 262 places, 1039 transitions, 16931 flow [2023-01-27 20:26:01,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=16490, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1038, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=841, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16931, PETRI_PLACES=262, PETRI_TRANSITIONS=1039} [2023-01-27 20:26:01,585 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 220 predicate places. [2023-01-27 20:26:01,585 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 1039 transitions, 16931 flow [2023-01-27 20:26:01,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:01,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:26:01,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:26:01,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-01-27 20:26:01,586 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:26:01,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:26:01,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1617919318, now seen corresponding path program 15 times [2023-01-27 20:26:01,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:26:01,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82175665] [2023-01-27 20:26:01,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:26:01,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:26:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:26:02,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:26:02,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:26:02,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82175665] [2023-01-27 20:26:02,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82175665] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:26:02,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:26:02,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:26:02,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216751467] [2023-01-27 20:26:02,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:26:02,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:26:02,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:26:02,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:26:02,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:26:02,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-27 20:26:02,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 1039 transitions, 16931 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:02,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:26:02,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-27 20:26:02,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:26:21,573 INFO L130 PetriNetUnfolder]: 27653/51739 cut-off events. [2023-01-27 20:26:21,573 INFO L131 PetriNetUnfolder]: For 631949/631949 co-relation queries the response was YES. [2023-01-27 20:26:22,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312748 conditions, 51739 events. 27653/51739 cut-off events. For 631949/631949 co-relation queries the response was YES. Maximal size of possible extension queue 3468. Compared 532242 event pairs, 11139 based on Foata normal form. 1/51739 useless extension candidates. Maximal degree in co-relation 312643. Up to 28475 conditions per place. [2023-01-27 20:26:22,907 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1386 selfloop transitions, 200 changer transitions 7/1593 dead transitions. [2023-01-27 20:26:22,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 1593 transitions, 27300 flow [2023-01-27 20:26:22,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:26:22,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:26:22,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3651 transitions. [2023-01-27 20:26:22,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38126566416040103 [2023-01-27 20:26:22,929 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3651 transitions. [2023-01-27 20:26:22,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3651 transitions. [2023-01-27 20:26:22,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:26:22,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3651 transitions. [2023-01-27 20:26:22,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 405.6666666666667) internal successors, (3651), 9 states have internal predecessors, (3651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:22,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:22,936 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:22,936 INFO L175 Difference]: Start difference. First operand has 262 places, 1039 transitions, 16931 flow. Second operand 9 states and 3651 transitions. [2023-01-27 20:26:22,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 1593 transitions, 27300 flow [2023-01-27 20:26:38,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 1593 transitions, 27051 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-01-27 20:26:39,015 INFO L231 Difference]: Finished difference. Result has 272 places, 1073 transitions, 18068 flow [2023-01-27 20:26:39,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=16727, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1039, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=855, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18068, PETRI_PLACES=272, PETRI_TRANSITIONS=1073} [2023-01-27 20:26:39,016 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 230 predicate places. [2023-01-27 20:26:39,017 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 1073 transitions, 18068 flow [2023-01-27 20:26:39,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:39,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:26:39,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:26:39,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-01-27 20:26:39,022 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:26:39,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:26:39,024 INFO L85 PathProgramCache]: Analyzing trace with hash 841868078, now seen corresponding path program 16 times [2023-01-27 20:26:39,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:26:39,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578059921] [2023-01-27 20:26:39,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:26:39,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:26:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:26:39,864 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:26:39,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:26:39,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578059921] [2023-01-27 20:26:39,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578059921] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:26:39,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:26:39,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:26:39,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622304461] [2023-01-27 20:26:39,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:26:39,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:26:39,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:26:39,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:26:39,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:26:39,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-27 20:26:39,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 1073 transitions, 18068 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:39,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:26:39,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-27 20:26:39,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:27:00,615 INFO L130 PetriNetUnfolder]: 27875/52445 cut-off events. [2023-01-27 20:27:00,615 INFO L131 PetriNetUnfolder]: For 671717/671717 co-relation queries the response was YES. [2023-01-27 20:27:01,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318576 conditions, 52445 events. 27875/52445 cut-off events. For 671717/671717 co-relation queries the response was YES. Maximal size of possible extension queue 3518. Compared 543510 event pairs, 10474 based on Foata normal form. 1/52445 useless extension candidates. Maximal degree in co-relation 318466. Up to 28475 conditions per place. [2023-01-27 20:27:02,020 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1335 selfloop transitions, 268 changer transitions 7/1610 dead transitions. [2023-01-27 20:27:02,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 1610 transitions, 28418 flow [2023-01-27 20:27:02,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:27:02,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:27:02,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3623 transitions. [2023-01-27 20:27:02,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37834168755221387 [2023-01-27 20:27:02,023 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3623 transitions. [2023-01-27 20:27:02,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3623 transitions. [2023-01-27 20:27:02,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:27:02,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3623 transitions. [2023-01-27 20:27:02,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 402.55555555555554) internal successors, (3623), 9 states have internal predecessors, (3623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:02,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:02,030 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:02,030 INFO L175 Difference]: Start difference. First operand has 272 places, 1073 transitions, 18068 flow. Second operand 9 states and 3623 transitions. [2023-01-27 20:27:02,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 1610 transitions, 28418 flow [2023-01-27 20:27:20,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 1610 transitions, 28065 flow, removed 55 selfloop flow, removed 3 redundant places. [2023-01-27 20:27:20,560 INFO L231 Difference]: Finished difference. Result has 282 places, 1130 transitions, 19945 flow [2023-01-27 20:27:20,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=17752, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1073, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=805, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19945, PETRI_PLACES=282, PETRI_TRANSITIONS=1130} [2023-01-27 20:27:20,561 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 240 predicate places. [2023-01-27 20:27:20,562 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 1130 transitions, 19945 flow [2023-01-27 20:27:20,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:20,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:27:20,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:27:20,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-01-27 20:27:20,563 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:27:20,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:27:20,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1896731414, now seen corresponding path program 17 times [2023-01-27 20:27:20,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:27:20,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13759632] [2023-01-27 20:27:20,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:27:20,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:27:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:27:21,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:27:21,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:27:21,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13759632] [2023-01-27 20:27:21,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13759632] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:27:21,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:27:21,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 20:27:21,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769923709] [2023-01-27 20:27:21,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:27:21,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:27:21,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:27:21,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:27:21,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:27:21,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 1064 [2023-01-27 20:27:21,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 1130 transitions, 19945 flow. Second operand has 11 states, 11 states have (on average 372.1818181818182) internal successors, (4094), 11 states have internal predecessors, (4094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:21,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:27:21,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 1064 [2023-01-27 20:27:21,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:27:44,470 INFO L130 PetriNetUnfolder]: 28076/52886 cut-off events. [2023-01-27 20:27:44,471 INFO L131 PetriNetUnfolder]: For 727779/727779 co-relation queries the response was YES. [2023-01-27 20:27:45,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325856 conditions, 52886 events. 28076/52886 cut-off events. For 727779/727779 co-relation queries the response was YES. Maximal size of possible extension queue 3569. Compared 549961 event pairs, 10597 based on Foata normal form. 1/52886 useless extension candidates. Maximal degree in co-relation 325741. Up to 28484 conditions per place. [2023-01-27 20:27:46,088 INFO L137 encePairwiseOnDemand]: 1048/1064 looper letters, 1279 selfloop transitions, 284 changer transitions 8/1571 dead transitions. [2023-01-27 20:27:46,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 1571 transitions, 28576 flow [2023-01-27 20:27:46,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 20:27:46,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 20:27:46,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4233 transitions. [2023-01-27 20:27:46,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36167122351332875 [2023-01-27 20:27:46,092 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4233 transitions. [2023-01-27 20:27:46,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4233 transitions. [2023-01-27 20:27:46,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:27:46,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4233 transitions. [2023-01-27 20:27:46,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 384.8181818181818) internal successors, (4233), 11 states have internal predecessors, (4233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:46,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:46,102 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:46,103 INFO L175 Difference]: Start difference. First operand has 282 places, 1130 transitions, 19945 flow. Second operand 11 states and 4233 transitions. [2023-01-27 20:27:46,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 1571 transitions, 28576 flow [2023-01-27 20:28:05,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 1571 transitions, 28286 flow, removed 29 selfloop flow, removed 3 redundant places. [2023-01-27 20:28:05,971 INFO L231 Difference]: Finished difference. Result has 295 places, 1208 transitions, 21795 flow [2023-01-27 20:28:05,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=19685, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=864, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21795, PETRI_PLACES=295, PETRI_TRANSITIONS=1208} [2023-01-27 20:28:05,973 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 253 predicate places. [2023-01-27 20:28:05,973 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 1208 transitions, 21795 flow [2023-01-27 20:28:05,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 372.1818181818182) internal successors, (4094), 11 states have internal predecessors, (4094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:28:05,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:28:05,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:28:05,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-01-27 20:28:05,974 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:28:05,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:28:05,974 INFO L85 PathProgramCache]: Analyzing trace with hash -857679955, now seen corresponding path program 2 times [2023-01-27 20:28:05,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:28:05,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406232603] [2023-01-27 20:28:05,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:28:05,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:28:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:28:06,173 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:28:06,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:28:06,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406232603] [2023-01-27 20:28:06,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406232603] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:28:06,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:28:06,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:28:06,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612682439] [2023-01-27 20:28:06,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:28:06,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:28:06,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:28:06,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:28:06,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:28:06,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 425 out of 1064 [2023-01-27 20:28:06,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 1208 transitions, 21795 flow. Second operand has 3 states, 3 states have (on average 436.6666666666667) internal successors, (1310), 3 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:28:06,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:28:06,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 425 of 1064 [2023-01-27 20:28:06,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:28:30,784 INFO L130 PetriNetUnfolder]: 29540/54072 cut-off events. [2023-01-27 20:28:30,785 INFO L131 PetriNetUnfolder]: For 791159/791159 co-relation queries the response was YES. [2023-01-27 20:28:32,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340719 conditions, 54072 events. 29540/54072 cut-off events. For 791159/791159 co-relation queries the response was YES. Maximal size of possible extension queue 3456. Compared 544532 event pairs, 9515 based on Foata normal form. 622/54693 useless extension candidates. Maximal degree in co-relation 340598. Up to 29781 conditions per place. [2023-01-27 20:28:32,484 INFO L137 encePairwiseOnDemand]: 1059/1064 looper letters, 1526 selfloop transitions, 146 changer transitions 0/1672 dead transitions. [2023-01-27 20:28:32,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 1672 transitions, 32781 flow [2023-01-27 20:28:32,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:28:32,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:28:32,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1343 transitions. [2023-01-27 20:28:32,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4207393483709273 [2023-01-27 20:28:32,503 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1343 transitions. [2023-01-27 20:28:32,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1343 transitions. [2023-01-27 20:28:32,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:28:32,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1343 transitions. [2023-01-27 20:28:32,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 447.6666666666667) internal successors, (1343), 3 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:28:32,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:28:32,506 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:28:32,506 INFO L175 Difference]: Start difference. First operand has 295 places, 1208 transitions, 21795 flow. Second operand 3 states and 1343 transitions. [2023-01-27 20:28:32,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 1672 transitions, 32781 flow [2023-01-27 20:28:52,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 1672 transitions, 32373 flow, removed 74 selfloop flow, removed 3 redundant places. [2023-01-27 20:28:52,702 INFO L231 Difference]: Finished difference. Result has 295 places, 1220 transitions, 22459 flow [2023-01-27 20:28:52,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=20509, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1015, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=22459, PETRI_PLACES=295, PETRI_TRANSITIONS=1220} [2023-01-27 20:28:52,704 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 253 predicate places. [2023-01-27 20:28:52,704 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 1220 transitions, 22459 flow [2023-01-27 20:28:52,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 436.6666666666667) internal successors, (1310), 3 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:28:52,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:28:52,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:28:52,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-01-27 20:28:52,711 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:28:52,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:28:52,712 INFO L85 PathProgramCache]: Analyzing trace with hash -342469808, now seen corresponding path program 18 times [2023-01-27 20:28:52,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:28:52,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575349319] [2023-01-27 20:28:52,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:28:52,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:28:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:28:53,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:28:53,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:28:53,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575349319] [2023-01-27 20:28:53,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575349319] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:28:53,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:28:53,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:28:53,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848966752] [2023-01-27 20:28:53,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:28:53,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:28:53,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:28:53,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:28:53,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:28:53,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-27 20:28:53,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 1220 transitions, 22459 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:28:53,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:28:53,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-27 20:28:53,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:29:16,078 INFO L130 PetriNetUnfolder]: 29540/54071 cut-off events. [2023-01-27 20:29:16,078 INFO L131 PetriNetUnfolder]: For 793426/793426 co-relation queries the response was YES. [2023-01-27 20:29:17,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345839 conditions, 54071 events. 29540/54071 cut-off events. For 793426/793426 co-relation queries the response was YES. Maximal size of possible extension queue 3439. Compared 544433 event pairs, 10963 based on Foata normal form. 1/54071 useless extension candidates. Maximal degree in co-relation 345718. Up to 30908 conditions per place. [2023-01-27 20:29:17,562 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1294 selfloop transitions, 273 changer transitions 7/1574 dead transitions. [2023-01-27 20:29:17,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 1574 transitions, 30174 flow [2023-01-27 20:29:17,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:29:17,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:29:17,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3620 transitions. [2023-01-27 20:29:17,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3780284043441938 [2023-01-27 20:29:17,565 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3620 transitions. [2023-01-27 20:29:17,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3620 transitions. [2023-01-27 20:29:17,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:29:17,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3620 transitions. [2023-01-27 20:29:17,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 402.22222222222223) internal successors, (3620), 9 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:29:17,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:29:17,571 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:29:17,571 INFO L175 Difference]: Start difference. First operand has 295 places, 1220 transitions, 22459 flow. Second operand 9 states and 3620 transitions. [2023-01-27 20:29:17,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 1574 transitions, 30174 flow [2023-01-27 20:29:37,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 1574 transitions, 29829 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-01-27 20:29:37,442 INFO L231 Difference]: Finished difference. Result has 304 places, 1235 transitions, 23219 flow [2023-01-27 20:29:37,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=22125, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=947, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23219, PETRI_PLACES=304, PETRI_TRANSITIONS=1235} [2023-01-27 20:29:37,447 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 262 predicate places. [2023-01-27 20:29:37,447 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 1235 transitions, 23219 flow [2023-01-27 20:29:37,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:29:37,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:29:37,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:29:37,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-01-27 20:29:37,448 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:29:37,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:29:37,448 INFO L85 PathProgramCache]: Analyzing trace with hash 144662842, now seen corresponding path program 19 times [2023-01-27 20:29:37,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:29:37,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684369265] [2023-01-27 20:29:37,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:29:37,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:29:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:29:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:29:38,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:29:38,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684369265] [2023-01-27 20:29:38,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684369265] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:29:38,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:29:38,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:29:38,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159349109] [2023-01-27 20:29:38,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:29:38,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:29:38,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:29:38,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:29:38,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:29:38,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-27 20:29:38,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 1235 transitions, 23219 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:29:38,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:29:38,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-27 20:29:38,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:30:01,460 INFO L130 PetriNetUnfolder]: 29535/54169 cut-off events. [2023-01-27 20:30:01,461 INFO L131 PetriNetUnfolder]: For 805426/805426 co-relation queries the response was YES. [2023-01-27 20:30:02,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346476 conditions, 54169 events. 29535/54169 cut-off events. For 805426/805426 co-relation queries the response was YES. Maximal size of possible extension queue 3493. Compared 547397 event pairs, 11078 based on Foata normal form. 2/54170 useless extension candidates. Maximal degree in co-relation 346351. Up to 30910 conditions per place. [2023-01-27 20:30:03,098 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1296 selfloop transitions, 259 changer transitions 9/1564 dead transitions. [2023-01-27 20:30:03,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 1564 transitions, 30492 flow [2023-01-27 20:30:03,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:30:03,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:30:03,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3629 transitions. [2023-01-27 20:30:03,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37896825396825395 [2023-01-27 20:30:03,101 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3629 transitions. [2023-01-27 20:30:03,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3629 transitions. [2023-01-27 20:30:03,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:30:03,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3629 transitions. [2023-01-27 20:30:03,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.22222222222223) internal successors, (3629), 9 states have internal predecessors, (3629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:30:03,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:30:03,107 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:30:03,107 INFO L175 Difference]: Start difference. First operand has 304 places, 1235 transitions, 23219 flow. Second operand 9 states and 3629 transitions. [2023-01-27 20:30:03,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 1564 transitions, 30492 flow [2023-01-27 20:30:23,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 1564 transitions, 30038 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-01-27 20:30:23,676 INFO L231 Difference]: Finished difference. Result has 311 places, 1251 transitions, 23931 flow [2023-01-27 20:30:23,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=22789, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=978, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23931, PETRI_PLACES=311, PETRI_TRANSITIONS=1251} [2023-01-27 20:30:23,678 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 269 predicate places. [2023-01-27 20:30:23,678 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 1251 transitions, 23931 flow [2023-01-27 20:30:23,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:30:23,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:30:23,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:30:23,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-01-27 20:30:23,679 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:30:23,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:30:23,679 INFO L85 PathProgramCache]: Analyzing trace with hash -841565252, now seen corresponding path program 20 times [2023-01-27 20:30:23,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:30:23,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587007717] [2023-01-27 20:30:23,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:30:23,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:30:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:30:24,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:30:24,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:30:24,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587007717] [2023-01-27 20:30:24,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587007717] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:30:24,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:30:24,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:30:24,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644167172] [2023-01-27 20:30:24,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:30:24,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:30:24,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:30:24,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:30:24,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:30:24,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-27 20:30:24,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 1251 transitions, 23931 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:30:24,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:30:24,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-27 20:30:24,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:30:48,353 INFO L130 PetriNetUnfolder]: 29525/54143 cut-off events. [2023-01-27 20:30:48,354 INFO L131 PetriNetUnfolder]: For 808235/808235 co-relation queries the response was YES. [2023-01-27 20:30:49,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347733 conditions, 54143 events. 29525/54143 cut-off events. For 808235/808235 co-relation queries the response was YES. Maximal size of possible extension queue 3491. Compared 546618 event pairs, 10881 based on Foata normal form. 2/54144 useless extension candidates. Maximal degree in co-relation 347605. Up to 30910 conditions per place. [2023-01-27 20:30:49,988 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1327 selfloop transitions, 257 changer transitions 8/1592 dead transitions. [2023-01-27 20:30:49,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 1592 transitions, 31355 flow [2023-01-27 20:30:49,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:30:49,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:30:49,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3642 transitions. [2023-01-27 20:30:50,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38032581453634084 [2023-01-27 20:30:50,000 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3642 transitions. [2023-01-27 20:30:50,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3642 transitions. [2023-01-27 20:30:50,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:30:50,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3642 transitions. [2023-01-27 20:30:50,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 404.6666666666667) internal successors, (3642), 9 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:30:50,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:30:50,009 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:30:50,009 INFO L175 Difference]: Start difference. First operand has 311 places, 1251 transitions, 23931 flow. Second operand 9 states and 3642 transitions. [2023-01-27 20:30:50,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 1592 transitions, 31355 flow [2023-01-27 20:31:09,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 1592 transitions, 30931 flow, removed 32 selfloop flow, removed 4 redundant places. [2023-01-27 20:31:09,921 INFO L231 Difference]: Finished difference. Result has 318 places, 1259 transitions, 24333 flow [2023-01-27 20:31:09,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=23537, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=994, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24333, PETRI_PLACES=318, PETRI_TRANSITIONS=1259} [2023-01-27 20:31:09,927 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 276 predicate places. [2023-01-27 20:31:09,927 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 1259 transitions, 24333 flow [2023-01-27 20:31:09,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:31:09,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:31:09,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:31:09,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-01-27 20:31:09,928 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:31:09,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:31:09,928 INFO L85 PathProgramCache]: Analyzing trace with hash 685727524, now seen corresponding path program 21 times [2023-01-27 20:31:09,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:31:09,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291017513] [2023-01-27 20:31:09,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:31:09,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:31:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:31:10,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:31:10,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:31:10,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291017513] [2023-01-27 20:31:10,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291017513] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:31:10,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:31:10,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:31:10,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525778843] [2023-01-27 20:31:10,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:31:10,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:31:10,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:31:10,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:31:10,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:31:10,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-27 20:31:10,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 1259 transitions, 24333 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:31:10,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:31:10,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-27 20:31:10,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:31:35,755 INFO L130 PetriNetUnfolder]: 29523/54125 cut-off events. [2023-01-27 20:31:35,756 INFO L131 PetriNetUnfolder]: For 818351/818351 co-relation queries the response was YES. [2023-01-27 20:31:37,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348132 conditions, 54125 events. 29523/54125 cut-off events. For 818351/818351 co-relation queries the response was YES. Maximal size of possible extension queue 3489. Compared 546426 event pairs, 10795 based on Foata normal form. 2/54126 useless extension candidates. Maximal degree in co-relation 348001. Up to 30910 conditions per place. [2023-01-27 20:31:37,654 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1337 selfloop transitions, 254 changer transitions 9/1600 dead transitions. [2023-01-27 20:31:37,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 1600 transitions, 31955 flow [2023-01-27 20:31:37,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:31:37,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:31:37,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3629 transitions. [2023-01-27 20:31:37,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37896825396825395 [2023-01-27 20:31:37,659 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3629 transitions. [2023-01-27 20:31:37,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3629 transitions. [2023-01-27 20:31:37,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:31:37,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3629 transitions. [2023-01-27 20:31:37,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.22222222222223) internal successors, (3629), 9 states have internal predecessors, (3629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:31:37,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:31:37,666 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:31:37,666 INFO L175 Difference]: Start difference. First operand has 318 places, 1259 transitions, 24333 flow. Second operand 9 states and 3629 transitions. [2023-01-27 20:31:37,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 1600 transitions, 31955 flow [2023-01-27 20:31:58,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 1600 transitions, 31683 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-01-27 20:31:58,751 INFO L231 Difference]: Finished difference. Result has 326 places, 1273 transitions, 25131 flow [2023-01-27 20:31:58,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=24069, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1005, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25131, PETRI_PLACES=326, PETRI_TRANSITIONS=1273} [2023-01-27 20:31:58,752 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 284 predicate places. [2023-01-27 20:31:58,753 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 1273 transitions, 25131 flow [2023-01-27 20:31:58,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:31:58,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:31:58,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:31:58,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-01-27 20:31:58,754 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:31:58,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:31:58,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1859402644, now seen corresponding path program 22 times [2023-01-27 20:31:58,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:31:58,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518128685] [2023-01-27 20:31:58,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:31:58,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:31:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:31:59,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:31:59,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:31:59,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518128685] [2023-01-27 20:31:59,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518128685] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:31:59,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:31:59,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:31:59,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349782975] [2023-01-27 20:31:59,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:31:59,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:31:59,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:31:59,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:31:59,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:31:59,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-27 20:31:59,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 1273 transitions, 25131 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:31:59,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:31:59,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-27 20:31:59,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:32:24,508 INFO L130 PetriNetUnfolder]: 29513/54099 cut-off events. [2023-01-27 20:32:24,509 INFO L131 PetriNetUnfolder]: For 835155/835155 co-relation queries the response was YES. [2023-01-27 20:32:26,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349408 conditions, 54099 events. 29513/54099 cut-off events. For 835155/835155 co-relation queries the response was YES. Maximal size of possible extension queue 3463. Compared 545986 event pairs, 10701 based on Foata normal form. 2/54100 useless extension candidates. Maximal degree in co-relation 349274. Up to 30910 conditions per place. [2023-01-27 20:32:26,658 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1301 selfloop transitions, 277 changer transitions 7/1585 dead transitions. [2023-01-27 20:32:26,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 1585 transitions, 31950 flow [2023-01-27 20:32:26,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:32:26,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:32:26,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3631 transitions. [2023-01-27 20:32:26,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37917710944026733 [2023-01-27 20:32:26,683 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3631 transitions. [2023-01-27 20:32:26,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3631 transitions. [2023-01-27 20:32:26,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:32:26,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3631 transitions. [2023-01-27 20:32:26,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.44444444444446) internal successors, (3631), 9 states have internal predecessors, (3631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:32:26,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:32:26,715 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:32:26,715 INFO L175 Difference]: Start difference. First operand has 326 places, 1273 transitions, 25131 flow. Second operand 9 states and 3631 transitions. [2023-01-27 20:32:26,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 1585 transitions, 31950 flow [2023-01-27 20:32:49,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 1585 transitions, 31398 flow, removed 44 selfloop flow, removed 6 redundant places. [2023-01-27 20:32:49,394 INFO L231 Difference]: Finished difference. Result has 330 places, 1275 transitions, 25283 flow [2023-01-27 20:32:49,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=24593, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=996, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25283, PETRI_PLACES=330, PETRI_TRANSITIONS=1275} [2023-01-27 20:32:49,398 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 288 predicate places. [2023-01-27 20:32:49,398 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 1275 transitions, 25283 flow [2023-01-27 20:32:49,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:32:49,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:32:49,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:32:49,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-01-27 20:32:49,399 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:32:49,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:32:49,399 INFO L85 PathProgramCache]: Analyzing trace with hash 82747270, now seen corresponding path program 23 times [2023-01-27 20:32:49,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:32:49,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134979631] [2023-01-27 20:32:49,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:32:49,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:32:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:32:49,898 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:32:49,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:32:49,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134979631] [2023-01-27 20:32:49,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134979631] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:32:49,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:32:49,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:32:49,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629662246] [2023-01-27 20:32:49,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:32:49,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:32:49,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:32:49,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:32:49,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:32:49,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-27 20:32:49,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 1275 transitions, 25283 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:32:49,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:32:49,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-27 20:32:49,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:33:16,342 INFO L130 PetriNetUnfolder]: 29507/54077 cut-off events. [2023-01-27 20:33:16,342 INFO L131 PetriNetUnfolder]: For 831026/831026 co-relation queries the response was YES. [2023-01-27 20:33:17,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349122 conditions, 54077 events. 29507/54077 cut-off events. For 831026/831026 co-relation queries the response was YES. Maximal size of possible extension queue 3456. Compared 545673 event pairs, 10813 based on Foata normal form. 2/54078 useless extension candidates. Maximal degree in co-relation 348986. Up to 30910 conditions per place. [2023-01-27 20:33:18,144 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1345 selfloop transitions, 252 changer transitions 8/1605 dead transitions. [2023-01-27 20:33:18,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 1605 transitions, 32564 flow [2023-01-27 20:33:18,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:33:18,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:33:18,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3631 transitions. [2023-01-27 20:33:18,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37917710944026733 [2023-01-27 20:33:18,171 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3631 transitions. [2023-01-27 20:33:18,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3631 transitions. [2023-01-27 20:33:18,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:33:18,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3631 transitions. [2023-01-27 20:33:18,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.44444444444446) internal successors, (3631), 9 states have internal predecessors, (3631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:33:18,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:33:18,199 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:33:18,199 INFO L175 Difference]: Start difference. First operand has 330 places, 1275 transitions, 25283 flow. Second operand 9 states and 3631 transitions. [2023-01-27 20:33:18,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 1605 transitions, 32564 flow [2023-01-27 20:33:41,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 1605 transitions, 31926 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-01-27 20:33:41,764 INFO L231 Difference]: Finished difference. Result has 333 places, 1283 transitions, 25456 flow [2023-01-27 20:33:41,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=24655, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1023, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25456, PETRI_PLACES=333, PETRI_TRANSITIONS=1283} [2023-01-27 20:33:41,776 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 291 predicate places. [2023-01-27 20:33:41,776 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 1283 transitions, 25456 flow [2023-01-27 20:33:41,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:33:41,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:33:41,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:33:41,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-01-27 20:33:41,777 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:33:41,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:33:41,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1737866682, now seen corresponding path program 24 times [2023-01-27 20:33:41,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:33:41,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238693415] [2023-01-27 20:33:41,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:33:41,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:33:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:33:42,216 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:33:42,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:33:42,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238693415] [2023-01-27 20:33:42,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238693415] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:33:42,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:33:42,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:33:42,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558555910] [2023-01-27 20:33:42,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:33:42,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:33:42,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:33:42,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:33:42,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:33:42,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-27 20:33:42,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 1283 transitions, 25456 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:33:42,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:33:42,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-27 20:33:42,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:34:05,116 INFO L130 PetriNetUnfolder]: 29505/54059 cut-off events. [2023-01-27 20:34:05,116 INFO L131 PetriNetUnfolder]: For 831406/831406 co-relation queries the response was YES. [2023-01-27 20:34:06,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348943 conditions, 54059 events. 29505/54059 cut-off events. For 831406/831406 co-relation queries the response was YES. Maximal size of possible extension queue 3483. Compared 545438 event pairs, 10703 based on Foata normal form. 2/54060 useless extension candidates. Maximal degree in co-relation 348805. Up to 30910 conditions per place. [2023-01-27 20:34:07,042 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1316 selfloop transitions, 274 changer transitions 7/1597 dead transitions. [2023-01-27 20:34:07,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 1597 transitions, 32410 flow [2023-01-27 20:34:07,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:34:07,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:34:07,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3634 transitions. [2023-01-27 20:34:07,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794903926482874 [2023-01-27 20:34:07,045 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3634 transitions. [2023-01-27 20:34:07,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3634 transitions. [2023-01-27 20:34:07,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:34:07,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3634 transitions. [2023-01-27 20:34:07,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.77777777777777) internal successors, (3634), 9 states have internal predecessors, (3634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:34:07,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:34:07,055 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:34:07,055 INFO L175 Difference]: Start difference. First operand has 333 places, 1283 transitions, 25456 flow. Second operand 9 states and 3634 transitions. [2023-01-27 20:34:07,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 1597 transitions, 32410 flow [2023-01-27 20:34:28,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 1597 transitions, 31936 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-01-27 20:34:28,951 INFO L231 Difference]: Finished difference. Result has 336 places, 1288 transitions, 25768 flow [2023-01-27 20:34:28,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=24990, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1009, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25768, PETRI_PLACES=336, PETRI_TRANSITIONS=1288} [2023-01-27 20:34:28,967 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 294 predicate places. [2023-01-27 20:34:28,967 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 1288 transitions, 25768 flow [2023-01-27 20:34:28,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:34:28,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:34:28,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:34:28,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-01-27 20:34:28,968 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:34:28,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:34:28,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1295481114, now seen corresponding path program 25 times [2023-01-27 20:34:28,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:34:28,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279076217] [2023-01-27 20:34:28,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:34:28,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:34:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:34:29,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:34:29,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:34:29,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279076217] [2023-01-27 20:34:29,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279076217] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:34:29,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:34:29,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:34:29,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142147557] [2023-01-27 20:34:29,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:34:29,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:34:29,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:34:29,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:34:29,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:34:29,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-27 20:34:29,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 1288 transitions, 25768 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:34:29,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:34:29,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-27 20:34:29,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:34:53,065 INFO L130 PetriNetUnfolder]: 29499/54037 cut-off events. [2023-01-27 20:34:53,066 INFO L131 PetriNetUnfolder]: For 837924/837924 co-relation queries the response was YES. [2023-01-27 20:34:54,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349212 conditions, 54037 events. 29499/54037 cut-off events. For 837924/837924 co-relation queries the response was YES. Maximal size of possible extension queue 3481. Compared 544946 event pairs, 10707 based on Foata normal form. 2/54038 useless extension candidates. Maximal degree in co-relation 349073. Up to 30910 conditions per place. [2023-01-27 20:34:54,810 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1318 selfloop transitions, 269 changer transitions 8/1595 dead transitions. [2023-01-27 20:34:54,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 1595 transitions, 32520 flow [2023-01-27 20:34:54,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:34:54,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:34:54,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3634 transitions. [2023-01-27 20:34:54,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794903926482874 [2023-01-27 20:34:54,814 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3634 transitions. [2023-01-27 20:34:54,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3634 transitions. [2023-01-27 20:34:54,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:34:54,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3634 transitions. [2023-01-27 20:34:54,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.77777777777777) internal successors, (3634), 9 states have internal predecessors, (3634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:34:54,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:34:54,820 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:34:54,820 INFO L175 Difference]: Start difference. First operand has 336 places, 1288 transitions, 25768 flow. Second operand 9 states and 3634 transitions. [2023-01-27 20:34:54,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 1595 transitions, 32520 flow [2023-01-27 20:35:16,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 1595 transitions, 32096 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-01-27 20:35:16,230 INFO L231 Difference]: Finished difference. Result has 337 places, 1286 transitions, 25814 flow [2023-01-27 20:35:16,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=25352, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1019, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25814, PETRI_PLACES=337, PETRI_TRANSITIONS=1286} [2023-01-27 20:35:16,231 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 295 predicate places. [2023-01-27 20:35:16,231 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 1286 transitions, 25814 flow [2023-01-27 20:35:16,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:35:16,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:35:16,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:35:16,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-01-27 20:35:16,232 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:35:16,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:35:16,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1542995430, now seen corresponding path program 26 times [2023-01-27 20:35:16,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:35:16,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544828066] [2023-01-27 20:35:16,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:35:16,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:35:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:35:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:35:16,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:35:16,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544828066] [2023-01-27 20:35:16,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544828066] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:35:16,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:35:16,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:35:16,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022904782] [2023-01-27 20:35:16,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:35:16,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:35:16,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:35:16,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:35:16,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:35:16,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-27 20:35:16,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 1286 transitions, 25814 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:35:16,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:35:16,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-27 20:35:16,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:35:39,482 INFO L130 PetriNetUnfolder]: 29497/54020 cut-off events. [2023-01-27 20:35:39,482 INFO L131 PetriNetUnfolder]: For 844500/844500 co-relation queries the response was YES. [2023-01-27 20:35:41,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349665 conditions, 54020 events. 29497/54020 cut-off events. For 844500/844500 co-relation queries the response was YES. Maximal size of possible extension queue 3479. Compared 544700 event pairs, 11256 based on Foata normal form. 1/54020 useless extension candidates. Maximal degree in co-relation 349528. Up to 30910 conditions per place. [2023-01-27 20:35:41,329 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1309 selfloop transitions, 281 changer transitions 8/1598 dead transitions. [2023-01-27 20:35:41,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 1598 transitions, 32577 flow [2023-01-27 20:35:41,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:35:41,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:35:41,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3634 transitions. [2023-01-27 20:35:41,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794903926482874 [2023-01-27 20:35:41,332 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3634 transitions. [2023-01-27 20:35:41,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3634 transitions. [2023-01-27 20:35:41,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:35:41,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3634 transitions. [2023-01-27 20:35:41,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.77777777777777) internal successors, (3634), 9 states have internal predecessors, (3634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:35:41,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:35:41,339 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:35:41,339 INFO L175 Difference]: Start difference. First operand has 337 places, 1286 transitions, 25814 flow. Second operand 9 states and 3634 transitions. [2023-01-27 20:35:41,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 1598 transitions, 32577 flow Received shutdown request... [2023-01-27 20:35:49,824 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 20:35:49,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-01-27 20:35:49,824 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-01-27 20:35:49,829 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 20:35:49,829 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 20:35:49,829 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 20:35:49,830 INFO L445 BasicCegarLoop]: Path program histogram: [26, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:35:49,834 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 20:35:49,834 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 20:35:49,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 08:35:49 BasicIcfg [2023-01-27 20:35:49,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 20:35:49,865 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 20:35:49,869 INFO L158 Benchmark]: Toolchain (without parser) took 860562.78ms. Allocated memory was 459.3MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 405.9MB in the beginning and 12.6GB in the end (delta: -12.2GB). Peak memory consumption was 3.8GB. Max. memory is 16.0GB. [2023-01-27 20:35:49,869 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 316.7MB. Free memory was 262.1MB in the beginning and 261.9MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 20:35:49,869 INFO L158 Benchmark]: CACSL2BoogieTranslator took 451.76ms. Allocated memory is still 459.3MB. Free memory was 405.9MB in the beginning and 392.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 20:35:49,869 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.82ms. Allocated memory is still 459.3MB. Free memory was 392.9MB in the beginning and 389.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-27 20:35:49,870 INFO L158 Benchmark]: Boogie Preprocessor took 76.20ms. Allocated memory is still 459.3MB. Free memory was 389.6MB in the beginning and 387.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 20:35:49,870 INFO L158 Benchmark]: RCFGBuilder took 962.06ms. Allocated memory is still 459.3MB. Free memory was 387.1MB in the beginning and 353.1MB in the end (delta: 33.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. [2023-01-27 20:35:49,870 INFO L158 Benchmark]: TraceAbstraction took 858989.29ms. Allocated memory was 459.3MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 352.4MB in the beginning and 12.6GB in the end (delta: -12.2GB). Peak memory consumption was 3.7GB. Max. memory is 16.0GB. [2023-01-27 20:35:49,874 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 316.7MB. Free memory was 262.1MB in the beginning and 261.9MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 451.76ms. Allocated memory is still 459.3MB. Free memory was 405.9MB in the beginning and 392.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 75.82ms. Allocated memory is still 459.3MB. Free memory was 392.9MB in the beginning and 389.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 76.20ms. Allocated memory is still 459.3MB. Free memory was 389.6MB in the beginning and 387.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 962.06ms. Allocated memory is still 459.3MB. Free memory was 387.1MB in the beginning and 353.1MB in the end (delta: 33.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. * TraceAbstraction took 858989.29ms. Allocated memory was 459.3MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 352.4MB in the beginning and 12.6GB in the end (delta: -12.2GB). Peak memory consumption was 3.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.4s, 457 PlacesBefore, 42 PlacesAfterwards, 488 TransitionsBefore, 42 TransitionsAfterwards, 17280 CoEnabledTransitionPairs, 11 FixpointIterations, 281 TrivialSequentialCompositions, 140 ConcurrentSequentialCompositions, 76 TrivialYvCompositions, 35 ConcurrentYvCompositions, 31 ChoiceCompositions, 563 TotalNumberOfCompositions, 21051 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17976, independent: 17711, independent conditional: 0, independent unconditional: 17711, dependent: 265, dependent conditional: 0, dependent unconditional: 265, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 10069, independent: 10017, independent conditional: 0, independent unconditional: 10017, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 17976, independent: 7694, independent conditional: 0, independent unconditional: 7694, dependent: 213, dependent conditional: 0, dependent unconditional: 213, unknown: 10069, unknown conditional: 0, unknown unconditional: 10069] , Statistics on independence cache: Total cache size (in pairs): 152, Positive cache size: 137, Positive conditional cache size: 0, Positive unconditional cache size: 137, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 599 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 858.7s, OverallIterations: 36, TraceHistogramMax: 1, PathProgramHistogramMax: 26, EmptinessCheckTime: 0.0s, AutomataDifference: 820.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 15.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4050 SdHoareTripleChecker+Valid, 13.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4050 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 11.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 75 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20540 IncrementalHoareTripleChecker+Invalid, 20615 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 75 mSolverCounterUnsat, 0 mSDtfsCounter, 20540 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 559 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 410 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25814occurred in iteration=35, InterpolantAutomatonStates: 301, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 18.1s InterpolantComputationTime, 1255 NumberOfCodeBlocks, 1255 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 1218 ConstructedInterpolants, 0 QuantifiedInterpolants, 11349 SizeOfPredicates, 2 NumberOfNonLiveVariables, 430 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 37 InterpolantComputations, 36 PerfectInterpolantSequences, 186/187 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown