/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 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 09:14:32,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 09:14:32,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 09:14:32,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 09:14:32,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 09:14:32,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 09:14:32,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 09:14:32,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 09:14:32,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 09:14:32,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 09:14:32,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 09:14:32,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 09:14:32,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 09:14:32,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 09:14:32,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 09:14:32,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 09:14:32,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 09:14:32,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 09:14:32,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 09:14:32,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 09:14:32,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 09:14:32,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 09:14:32,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 09:14:32,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 09:14:32,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 09:14:32,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 09:14:32,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 09:14:32,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 09:14:32,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 09:14:32,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 09:14:32,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 09:14:32,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 09:14:32,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 09:14:32,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 09:14:32,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 09:14:32,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 09:14:32,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 09:14:32,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 09:14:32,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 09:14:32,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 09:14:32,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 09:14:32,993 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 [2023-01-28 09:14:33,016 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 09:14:33,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 09:14:33,017 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 09:14:33,017 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 09:14:33,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 09:14:33,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 09:14:33,018 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 09:14:33,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 09:14:33,018 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 09:14:33,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 09:14:33,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 09:14:33,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 09:14:33,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 09:14:33,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 09:14:33,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 09:14:33,019 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 09:14:33,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 09:14:33,019 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 09:14:33,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 09:14:33,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 09:14:33,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 09:14:33,019 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 09:14:33,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 09:14:33,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:14:33,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 09:14:33,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 09:14:33,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 09:14:33,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 09:14:33,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 09:14:33,020 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 09:14:33,020 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 09:14:33,020 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 09:14:33,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 09:14:33,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 09:14:33,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 09:14:33,176 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 09:14:33,177 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 09:14:33,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2023-01-28 09:14:34,181 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 09:14:34,371 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 09:14:34,371 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2023-01-28 09:14:34,379 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3db501d21/902b34da289c4f54b67cffa1ecf2b35e/FLAGdbc051e43 [2023-01-28 09:14:34,389 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3db501d21/902b34da289c4f54b67cffa1ecf2b35e [2023-01-28 09:14:34,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 09:14:34,392 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 09:14:34,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 09:14:34,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 09:14:34,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 09:14:34,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:14:34" (1/1) ... [2023-01-28 09:14:34,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e33316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:14:34, skipping insertion in model container [2023-01-28 09:14:34,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:14:34" (1/1) ... [2023-01-28 09:14:34,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 09:14:34,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 09:14:34,648 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-poker-hand-symm.wvr.c[12821,12834] [2023-01-28 09:14:34,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:14:34,682 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 09:14:34,796 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-poker-hand-symm.wvr.c[12821,12834] [2023-01-28 09:14:34,798 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:14:34,803 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:14:34,803 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:14:34,807 INFO L208 MainTranslator]: Completed translation [2023-01-28 09:14:34,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:14:34 WrapperNode [2023-01-28 09:14:34,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 09:14:34,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 09:14:34,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 09:14:34,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 09:14:34,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:14:34" (1/1) ... [2023-01-28 09:14:34,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:14:34" (1/1) ... [2023-01-28 09:14:34,923 INFO L138 Inliner]: procedures = 25, calls = 307, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1546 [2023-01-28 09:14:34,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 09:14:34,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 09:14:34,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 09:14:34,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 09:14:34,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:14:34" (1/1) ... [2023-01-28 09:14:34,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:14:34" (1/1) ... [2023-01-28 09:14:34,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:14:34" (1/1) ... [2023-01-28 09:14:34,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:14:34" (1/1) ... [2023-01-28 09:14:34,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:14:34" (1/1) ... [2023-01-28 09:14:34,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:14:34" (1/1) ... [2023-01-28 09:14:34,968 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:14:34" (1/1) ... [2023-01-28 09:14:34,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:14:34" (1/1) ... [2023-01-28 09:14:34,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 09:14:34,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 09:14:34,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 09:14:34,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 09:14:34,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:14:34" (1/1) ... [2023-01-28 09:14:34,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:14:34,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:14:35,019 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) [2023-01-28 09:14:35,040 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 [2023-01-28 09:14:35,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 09:14:35,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 09:14:35,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 09:14:35,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 09:14:35,066 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 09:14:35,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 09:14:35,066 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 09:14:35,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 09:14:35,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 09:14:35,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 09:14:35,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 09:14:35,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 09:14:35,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 09:14:35,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 09:14:35,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 09:14:35,068 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 09:14:35,260 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 09:14:35,261 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 09:14:36,171 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 09:14:37,177 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 09:14:37,177 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-01-28 09:14:37,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:14:37 BoogieIcfgContainer [2023-01-28 09:14:37,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 09:14:37,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 09:14:37,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 09:14:37,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 09:14:37,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:14:34" (1/3) ... [2023-01-28 09:14:37,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f728ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:14:37, skipping insertion in model container [2023-01-28 09:14:37,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:14:34" (2/3) ... [2023-01-28 09:14:37,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f728ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:14:37, skipping insertion in model container [2023-01-28 09:14:37,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:14:37" (3/3) ... [2023-01-28 09:14:37,184 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2023-01-28 09:14:37,196 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 09:14:37,196 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 09:14:37,196 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 09:14:37,382 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 09:14:37,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 455 transitions, 926 flow [2023-01-28 09:14:37,496 INFO L130 PetriNetUnfolder]: 53/453 cut-off events. [2023-01-28 09:14:37,496 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:14:37,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 453 events. 53/453 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 567 event pairs, 0 based on Foata normal form. 0/399 useless extension candidates. Maximal degree in co-relation 375. Up to 7 conditions per place. [2023-01-28 09:14:37,511 INFO L82 GeneralOperation]: Start removeDead. Operand has 409 places, 455 transitions, 926 flow [2023-01-28 09:14:37,516 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 399 places, 445 transitions, 902 flow [2023-01-28 09:14:37,519 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 09:14:37,524 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 399 places, 445 transitions, 902 flow [2023-01-28 09:14:37,526 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 399 places, 445 transitions, 902 flow [2023-01-28 09:14:37,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 399 places, 445 transitions, 902 flow [2023-01-28 09:14:37,594 INFO L130 PetriNetUnfolder]: 53/445 cut-off events. [2023-01-28 09:14:37,594 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:14:37,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 445 events. 53/445 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 567 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 375. Up to 7 conditions per place. [2023-01-28 09:14:37,601 INFO L119 LiptonReduction]: Number of co-enabled transitions 7700 [2023-01-28 09:15:21,123 INFO L134 LiptonReduction]: Checked pairs total: 7716 [2023-01-28 09:15:21,123 INFO L136 LiptonReduction]: Total number of compositions: 528 [2023-01-28 09:15:21,153 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 09:15:21,160 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;@6ff5dfa1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 09:15:21,160 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 09:15:21,196 INFO L130 PetriNetUnfolder]: 16/38 cut-off events. [2023-01-28 09:15:21,196 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:15:21,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:15:21,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:15:21,198 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:15:21,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:15:21,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1344797690, now seen corresponding path program 1 times [2023-01-28 09:15:21,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:15:21,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152029866] [2023-01-28 09:15:21,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:15:21,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:15:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:15:21,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:15:21,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:15:21,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152029866] [2023-01-28 09:15:21,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152029866] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:15:21,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:15:21,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:15:21,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988695291] [2023-01-28 09:15:21,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:15:21,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:15:21,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:15:21,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:15:21,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:15:21,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 983 [2023-01-28 09:15:21,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 39 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:21,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:15:21,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 983 [2023-01-28 09:15:21,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:15:22,163 INFO L130 PetriNetUnfolder]: 133/196 cut-off events. [2023-01-28 09:15:22,163 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 09:15:22,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 196 events. 133/196 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 372 event pairs, 45 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 308. Up to 193 conditions per place. [2023-01-28 09:15:22,165 INFO L137 encePairwiseOnDemand]: 974/983 looper letters, 35 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2023-01-28 09:15:22,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 43 transitions, 184 flow [2023-01-28 09:15:22,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:15:22,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:15:22,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 980 transitions. [2023-01-28 09:15:22,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3323160393353679 [2023-01-28 09:15:22,183 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 980 transitions. [2023-01-28 09:15:22,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 980 transitions. [2023-01-28 09:15:22,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:15:22,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 980 transitions. [2023-01-28 09:15:22,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:22,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:22,202 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:22,203 INFO L175 Difference]: Start difference. First operand has 30 places, 39 transitions, 90 flow. Second operand 3 states and 980 transitions. [2023-01-28 09:15:22,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 43 transitions, 184 flow [2023-01-28 09:15:22,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 43 transitions, 176 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 09:15:22,206 INFO L231 Difference]: Finished difference. Result has 29 places, 43 transitions, 124 flow [2023-01-28 09:15:22,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=29, PETRI_TRANSITIONS=43} [2023-01-28 09:15:22,212 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2023-01-28 09:15:22,212 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 43 transitions, 124 flow [2023-01-28 09:15:22,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:22,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:15:22,213 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] [2023-01-28 09:15:22,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 09:15:22,213 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:15:22,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:15:22,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1708311211, now seen corresponding path program 1 times [2023-01-28 09:15:22,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:15:22,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790192912] [2023-01-28 09:15:22,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:15:22,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:15:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:15:22,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:15:22,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:15:22,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790192912] [2023-01-28 09:15:22,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790192912] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:15:22,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011883920] [2023-01-28 09:15:22,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:15:22,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:15:22,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:15:22,522 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) [2023-01-28 09:15:22,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 09:15:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:15:23,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 09:15:23,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:15:23,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 09:15:23,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:15:23,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011883920] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:15:23,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:15:23,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-01-28 09:15:23,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966625060] [2023-01-28 09:15:23,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:15:23,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:15:23,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:15:23,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:15:23,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:15:23,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 983 [2023-01-28 09:15:23,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 43 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:23,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:15:23,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 983 [2023-01-28 09:15:23,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:15:23,308 INFO L130 PetriNetUnfolder]: 133/200 cut-off events. [2023-01-28 09:15:23,308 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:15:23,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 200 events. 133/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 373 event pairs, 45 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 373. Up to 197 conditions per place. [2023-01-28 09:15:23,309 INFO L137 encePairwiseOnDemand]: 973/983 looper letters, 39 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2023-01-28 09:15:23,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 47 transitions, 226 flow [2023-01-28 09:15:23,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:15:23,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:15:23,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 980 transitions. [2023-01-28 09:15:23,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3323160393353679 [2023-01-28 09:15:23,312 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 980 transitions. [2023-01-28 09:15:23,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 980 transitions. [2023-01-28 09:15:23,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:15:23,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 980 transitions. [2023-01-28 09:15:23,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:23,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:23,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:23,319 INFO L175 Difference]: Start difference. First operand has 29 places, 43 transitions, 124 flow. Second operand 3 states and 980 transitions. [2023-01-28 09:15:23,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 47 transitions, 226 flow [2023-01-28 09:15:23,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 47 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 09:15:23,320 INFO L231 Difference]: Finished difference. Result has 31 places, 47 transitions, 160 flow [2023-01-28 09:15:23,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=31, PETRI_TRANSITIONS=47} [2023-01-28 09:15:23,321 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-01-28 09:15:23,321 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 47 transitions, 160 flow [2023-01-28 09:15:23,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:23,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:15:23,322 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] [2023-01-28 09:15:23,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 09:15:23,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:15:23,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:15:23,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:15:23,534 INFO L85 PathProgramCache]: Analyzing trace with hash -457718845, now seen corresponding path program 1 times [2023-01-28 09:15:23,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:15:23,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237572080] [2023-01-28 09:15:23,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:15:23,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:15:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:15:23,785 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 09:15:23,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:15:23,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237572080] [2023-01-28 09:15:23,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237572080] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:15:23,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553776945] [2023-01-28 09:15:23,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:15:23,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:15:23,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:15:23,787 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:15:23,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 09:15:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:15:24,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-28 09:15:24,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:15:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 09:15:24,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:15:24,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 09:15:24,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553776945] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:15:24,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:15:24,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-01-28 09:15:24,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192945753] [2023-01-28 09:15:24,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:15:24,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:15:24,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:15:24,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:15:24,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:15:24,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 983 [2023-01-28 09:15:24,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 47 transitions, 160 flow. Second operand has 8 states, 8 states have (on average 315.625) internal successors, (2525), 8 states have internal predecessors, (2525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:24,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:15:24,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 983 [2023-01-28 09:15:24,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:15:24,696 INFO L130 PetriNetUnfolder]: 133/224 cut-off events. [2023-01-28 09:15:24,696 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 09:15:24,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 224 events. 133/224 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 373 event pairs, 45 based on Foata normal form. 12/152 useless extension candidates. Maximal degree in co-relation 393. Up to 193 conditions per place. [2023-01-28 09:15:24,697 INFO L137 encePairwiseOnDemand]: 966/983 looper letters, 31 selfloop transitions, 40 changer transitions 0/71 dead transitions. [2023-01-28 09:15:24,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 71 transitions, 398 flow [2023-01-28 09:15:24,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 09:15:24,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 09:15:24,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2583 transitions. [2023-01-28 09:15:24,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284587995930824 [2023-01-28 09:15:24,703 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2583 transitions. [2023-01-28 09:15:24,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2583 transitions. [2023-01-28 09:15:24,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:15:24,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2583 transitions. [2023-01-28 09:15:24,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 322.875) internal successors, (2583), 8 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:24,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 983.0) internal successors, (8847), 9 states have internal predecessors, (8847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:24,719 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 983.0) internal successors, (8847), 9 states have internal predecessors, (8847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:24,719 INFO L175 Difference]: Start difference. First operand has 31 places, 47 transitions, 160 flow. Second operand 8 states and 2583 transitions. [2023-01-28 09:15:24,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 71 transitions, 398 flow [2023-01-28 09:15:24,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 71 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 09:15:24,723 INFO L231 Difference]: Finished difference. Result has 40 places, 71 transitions, 390 flow [2023-01-28 09:15:24,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=390, PETRI_PLACES=40, PETRI_TRANSITIONS=71} [2023-01-28 09:15:24,723 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2023-01-28 09:15:24,724 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 71 transitions, 390 flow [2023-01-28 09:15:24,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 315.625) internal successors, (2525), 8 states have internal predecessors, (2525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:24,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:15:24,726 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:15:24,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 09:15:24,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-01-28 09:15:24,934 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:15:24,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:15:24,934 INFO L85 PathProgramCache]: Analyzing trace with hash 141857420, now seen corresponding path program 2 times [2023-01-28 09:15:24,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:15:24,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383908260] [2023-01-28 09:15:24,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:15:24,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:15:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:15:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-01-28 09:15:25,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:15:25,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383908260] [2023-01-28 09:15:25,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383908260] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:15:25,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391326943] [2023-01-28 09:15:25,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 09:15:25,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:15:25,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:15:25,233 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:15:25,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 09:15:25,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 09:15:25,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:15:25,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 09:15:25,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:15:30,206 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:15:30,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1365 treesize of output 1191 [2023-01-28 09:16:02,679 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-01-28 09:16:02,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:16:02,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391326943] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:16:02,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:16:02,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-01-28 09:16:02,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378696423] [2023-01-28 09:16:02,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:16:02,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:16:02,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:16:02,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:16:02,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:16:02,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 983 [2023-01-28 09:16:02,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 71 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 376.75) internal successors, (1507), 4 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:02,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:16:02,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 983 [2023-01-28 09:16:02,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:16:03,361 INFO L130 PetriNetUnfolder]: 220/356 cut-off events. [2023-01-28 09:16:03,362 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-01-28 09:16:03,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 356 events. 220/356 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 889 event pairs, 29 based on Foata normal form. 1/220 useless extension candidates. Maximal degree in co-relation 678. Up to 211 conditions per place. [2023-01-28 09:16:03,363 INFO L137 encePairwiseOnDemand]: 968/983 looper letters, 85 selfloop transitions, 13 changer transitions 6/104 dead transitions. [2023-01-28 09:16:03,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 104 transitions, 670 flow [2023-01-28 09:16:03,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:16:03,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:16:03,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1925 transitions. [2023-01-28 09:16:03,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916581892166836 [2023-01-28 09:16:03,379 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1925 transitions. [2023-01-28 09:16:03,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1925 transitions. [2023-01-28 09:16:03,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:16:03,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1925 transitions. [2023-01-28 09:16:03,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 385.0) internal successors, (1925), 5 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:03,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 983.0) internal successors, (5898), 6 states have internal predecessors, (5898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:03,391 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 983.0) internal successors, (5898), 6 states have internal predecessors, (5898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:03,391 INFO L175 Difference]: Start difference. First operand has 40 places, 71 transitions, 390 flow. Second operand 5 states and 1925 transitions. [2023-01-28 09:16:03,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 104 transitions, 670 flow [2023-01-28 09:16:03,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 104 transitions, 588 flow, removed 29 selfloop flow, removed 3 redundant places. [2023-01-28 09:16:03,394 INFO L231 Difference]: Finished difference. Result has 44 places, 82 transitions, 398 flow [2023-01-28 09:16:03,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=398, PETRI_PLACES=44, PETRI_TRANSITIONS=82} [2023-01-28 09:16:03,394 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2023-01-28 09:16:03,395 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 82 transitions, 398 flow [2023-01-28 09:16:03,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 376.75) internal successors, (1507), 4 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:03,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:16:03,395 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:16:03,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-28 09:16:03,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:16:03,603 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:16:03,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:16:03,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1414425790, now seen corresponding path program 3 times [2023-01-28 09:16:03,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:16:03,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507743498] [2023-01-28 09:16:03,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:16:03,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:16:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:16:03,904 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-01-28 09:16:03,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:16:03,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507743498] [2023-01-28 09:16:03,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507743498] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:16:03,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609640387] [2023-01-28 09:16:03,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 09:16:03,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:16:03,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:16:03,906 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:16:03,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 09:16:04,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 09:16:04,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:16:04,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 09:16:04,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:16:07,742 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:16:07,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1350 treesize of output 1176 [2023-01-28 09:17:57,154 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-01-28 09:17:57,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:17:57,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609640387] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:17:57,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:17:57,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-01-28 09:17:57,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143772077] [2023-01-28 09:17:57,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:17:57,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:17:57,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:17:57,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:17:57,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:17:57,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 983 [2023-01-28 09:17:57,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 82 transitions, 398 flow. Second operand has 4 states, 4 states have (on average 376.75) internal successors, (1507), 4 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:57,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:17:57,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 983 [2023-01-28 09:17:57,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:17:57,771 INFO L130 PetriNetUnfolder]: 222/370 cut-off events. [2023-01-28 09:17:57,771 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-01-28 09:17:57,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1148 conditions, 370 events. 222/370 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 954 event pairs, 31 based on Foata normal form. 3/259 useless extension candidates. Maximal degree in co-relation 1128. Up to 242 conditions per place. [2023-01-28 09:17:57,773 INFO L137 encePairwiseOnDemand]: 969/983 looper letters, 86 selfloop transitions, 12 changer transitions 5/103 dead transitions. [2023-01-28 09:17:57,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 103 transitions, 670 flow [2023-01-28 09:17:57,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:17:57,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:17:57,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1923 transitions. [2023-01-28 09:17:57,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39125127161749745 [2023-01-28 09:17:57,777 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1923 transitions. [2023-01-28 09:17:57,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1923 transitions. [2023-01-28 09:17:57,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:17:57,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1923 transitions. [2023-01-28 09:17:57,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 384.6) internal successors, (1923), 5 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:57,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 983.0) internal successors, (5898), 6 states have internal predecessors, (5898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:57,785 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 983.0) internal successors, (5898), 6 states have internal predecessors, (5898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:57,785 INFO L175 Difference]: Start difference. First operand has 44 places, 82 transitions, 398 flow. Second operand 5 states and 1923 transitions. [2023-01-28 09:17:57,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 103 transitions, 670 flow [2023-01-28 09:17:57,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 103 transitions, 666 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 09:17:57,787 INFO L231 Difference]: Finished difference. Result has 48 places, 82 transitions, 430 flow [2023-01-28 09:17:57,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=430, PETRI_PLACES=48, PETRI_TRANSITIONS=82} [2023-01-28 09:17:57,788 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 18 predicate places. [2023-01-28 09:17:57,788 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 82 transitions, 430 flow [2023-01-28 09:17:57,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 376.75) internal successors, (1507), 4 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:57,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:17:57,789 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:17:57,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 09:17:57,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:17:57,996 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:17:57,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:17:57,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1787475852, now seen corresponding path program 4 times [2023-01-28 09:17:57,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:17:57,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695268124] [2023-01-28 09:17:57,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:17:57,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:17:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:17:58,221 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-01-28 09:17:58,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:17:58,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695268124] [2023-01-28 09:17:58,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695268124] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:17:58,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757271427] [2023-01-28 09:17:58,222 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 09:17:58,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:17:58,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:17:58,223 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:17:58,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 09:17:58,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 09:17:58,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:17:58,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 09:17:58,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:17:58,849 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-01-28 09:17:58,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:17:58,869 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-01-28 09:17:58,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757271427] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:17:58,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:17:58,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-01-28 09:17:58,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592146929] [2023-01-28 09:17:58,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:17:58,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 09:17:58,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:17:58,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 09:17:58,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2023-01-28 09:17:58,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 983 [2023-01-28 09:17:58,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 82 transitions, 430 flow. Second operand has 12 states, 12 states have (on average 314.0) internal successors, (3768), 12 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:58,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:17:58,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 983 [2023-01-28 09:17:58,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:17:59,310 INFO L130 PetriNetUnfolder]: 221/368 cut-off events. [2023-01-28 09:17:59,310 INFO L131 PetriNetUnfolder]: For 246/246 co-relation queries the response was YES. [2023-01-28 09:17:59,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1265 conditions, 368 events. 221/368 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 912 event pairs, 69 based on Foata normal form. 1/255 useless extension candidates. Maximal degree in co-relation 1243. Up to 333 conditions per place. [2023-01-28 09:17:59,312 INFO L137 encePairwiseOnDemand]: 966/983 looper letters, 42 selfloop transitions, 44 changer transitions 0/86 dead transitions. [2023-01-28 09:17:59,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 86 transitions, 626 flow [2023-01-28 09:17:59,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 09:17:59,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 09:17:59,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3500 transitions. [2023-01-28 09:17:59,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32368445389808564 [2023-01-28 09:17:59,318 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3500 transitions. [2023-01-28 09:17:59,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3500 transitions. [2023-01-28 09:17:59,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:17:59,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3500 transitions. [2023-01-28 09:17:59,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 318.1818181818182) internal successors, (3500), 11 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:59,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 983.0) internal successors, (11796), 12 states have internal predecessors, (11796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:59,333 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 983.0) internal successors, (11796), 12 states have internal predecessors, (11796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:59,333 INFO L175 Difference]: Start difference. First operand has 48 places, 82 transitions, 430 flow. Second operand 11 states and 3500 transitions. [2023-01-28 09:17:59,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 86 transitions, 626 flow [2023-01-28 09:17:59,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 86 transitions, 613 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 09:17:59,336 INFO L231 Difference]: Finished difference. Result has 56 places, 86 transitions, 547 flow [2023-01-28 09:17:59,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=547, PETRI_PLACES=56, PETRI_TRANSITIONS=86} [2023-01-28 09:17:59,336 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2023-01-28 09:17:59,336 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 86 transitions, 547 flow [2023-01-28 09:17:59,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 314.0) internal successors, (3768), 12 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:59,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:17:59,337 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:17:59,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 09:17:59,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:17:59,545 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:17:59,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:17:59,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1712025184, now seen corresponding path program 5 times [2023-01-28 09:17:59,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:17:59,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062741459] [2023-01-28 09:17:59,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:17:59,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:17:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:17:59,822 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-01-28 09:17:59,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:17:59,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062741459] [2023-01-28 09:17:59,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062741459] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:17:59,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174148395] [2023-01-28 09:17:59,823 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 09:17:59,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:17:59,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:17:59,824 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:17:59,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 09:21:00,928 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-28 09:21:00,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:21:00,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 09:21:00,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:21:01,022 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-01-28 09:21:01,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:21:01,073 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-01-28 09:21:01,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174148395] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:21:01,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:21:01,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-01-28 09:21:01,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696701355] [2023-01-28 09:21:01,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:21:01,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 09:21:01,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:21:01,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 09:21:01,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=200, Unknown=0, NotChecked=0, Total=380 [2023-01-28 09:21:01,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 983 [2023-01-28 09:21:01,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 86 transitions, 547 flow. Second operand has 20 states, 20 states have (on average 313.25) internal successors, (6265), 20 states have internal predecessors, (6265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:01,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:21:01,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 983 [2023-01-28 09:21:01,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:21:01,520 INFO L130 PetriNetUnfolder]: 221/382 cut-off events. [2023-01-28 09:21:01,520 INFO L131 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2023-01-28 09:21:01,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1385 conditions, 382 events. 221/382 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 901 event pairs, 69 based on Foata normal form. 14/288 useless extension candidates. Maximal degree in co-relation 1099. Up to 333 conditions per place. [2023-01-28 09:21:01,522 INFO L137 encePairwiseOnDemand]: 966/983 looper letters, 42 selfloop transitions, 58 changer transitions 0/100 dead transitions. [2023-01-28 09:21:01,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 100 transitions, 859 flow [2023-01-28 09:21:01,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 09:21:01,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 09:21:01,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4457 transitions. [2023-01-28 09:21:01,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386281063798866 [2023-01-28 09:21:01,530 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4457 transitions. [2023-01-28 09:21:01,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4457 transitions. [2023-01-28 09:21:01,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:21:01,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4457 transitions. [2023-01-28 09:21:01,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 318.35714285714283) internal successors, (4457), 14 states have internal predecessors, (4457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:01,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 983.0) internal successors, (14745), 15 states have internal predecessors, (14745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:01,547 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 983.0) internal successors, (14745), 15 states have internal predecessors, (14745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:01,547 INFO L175 Difference]: Start difference. First operand has 56 places, 86 transitions, 547 flow. Second operand 14 states and 4457 transitions. [2023-01-28 09:21:01,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 100 transitions, 859 flow [2023-01-28 09:21:01,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 100 transitions, 779 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-01-28 09:21:01,551 INFO L231 Difference]: Finished difference. Result has 70 places, 100 transitions, 793 flow [2023-01-28 09:21:01,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=793, PETRI_PLACES=70, PETRI_TRANSITIONS=100} [2023-01-28 09:21:01,551 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2023-01-28 09:21:01,551 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 100 transitions, 793 flow [2023-01-28 09:21:01,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 313.25) internal successors, (6265), 20 states have internal predecessors, (6265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:01,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:21:01,552 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:21:01,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 09:21:01,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:21:01,778 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:21:01,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:21:01,778 INFO L85 PathProgramCache]: Analyzing trace with hash -595377332, now seen corresponding path program 6 times [2023-01-28 09:21:01,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:21:01,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715696991] [2023-01-28 09:21:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:21:01,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:21:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:21:02,233 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-01-28 09:21:02,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:21:02,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715696991] [2023-01-28 09:21:02,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715696991] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:21:02,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856446312] [2023-01-28 09:21:02,234 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 09:21:02,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:21:02,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:21:02,235 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:21:02,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 09:21:02,810 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-28 09:21:02,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:21:02,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-28 09:21:02,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:21:05,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:21:05,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:21:05,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:21:05,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:21:05,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:21:05,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:21:05,835 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-01-28 09:21:05,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 446 treesize of output 395 [2023-01-28 09:21:08,234 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:21:08,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1365 treesize of output 1191 [2023-01-28 09:21:33,645 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-01-28 09:21:33,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:21:33,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856446312] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:21:33,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:21:33,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 25 [2023-01-28 09:21:33,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40840235] [2023-01-28 09:21:33,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:21:33,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 09:21:33,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:21:33,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 09:21:33,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2023-01-28 09:21:33,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 983 [2023-01-28 09:21:33,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 100 transitions, 793 flow. Second operand has 12 states, 12 states have (on average 334.25) internal successors, (4011), 12 states have internal predecessors, (4011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:33,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:21:33,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 983 [2023-01-28 09:21:33,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:21:34,745 INFO L130 PetriNetUnfolder]: 223/394 cut-off events. [2023-01-28 09:21:34,745 INFO L131 PetriNetUnfolder]: For 238/238 co-relation queries the response was YES. [2023-01-28 09:21:34,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1497 conditions, 394 events. 223/394 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1037 event pairs, 26 based on Foata normal form. 5/291 useless extension candidates. Maximal degree in co-relation 1158. Up to 225 conditions per place. [2023-01-28 09:21:34,747 INFO L137 encePairwiseOnDemand]: 969/983 looper letters, 103 selfloop transitions, 12 changer transitions 7/122 dead transitions. [2023-01-28 09:21:34,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 122 transitions, 1112 flow [2023-01-28 09:21:34,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 09:21:34,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 09:21:34,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2067 transitions. [2023-01-28 09:21:34,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3504577822990844 [2023-01-28 09:21:34,750 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2067 transitions. [2023-01-28 09:21:34,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2067 transitions. [2023-01-28 09:21:34,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:21:34,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2067 transitions. [2023-01-28 09:21:34,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 344.5) internal successors, (2067), 6 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:34,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 983.0) internal successors, (6881), 7 states have internal predecessors, (6881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:34,758 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 983.0) internal successors, (6881), 7 states have internal predecessors, (6881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:34,758 INFO L175 Difference]: Start difference. First operand has 70 places, 100 transitions, 793 flow. Second operand 6 states and 2067 transitions. [2023-01-28 09:21:34,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 122 transitions, 1112 flow [2023-01-28 09:21:34,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 122 transitions, 1040 flow, removed 28 selfloop flow, removed 1 redundant places. [2023-01-28 09:21:34,763 INFO L231 Difference]: Finished difference. Result has 76 places, 99 transitions, 750 flow [2023-01-28 09:21:34,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=750, PETRI_PLACES=76, PETRI_TRANSITIONS=99} [2023-01-28 09:21:34,763 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2023-01-28 09:21:34,763 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 99 transitions, 750 flow [2023-01-28 09:21:34,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 334.25) internal successors, (4011), 12 states have internal predecessors, (4011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:34,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:21:34,764 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:21:34,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 09:21:34,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:21:34,973 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:21:34,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:21:34,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1455469097, now seen corresponding path program 1 times [2023-01-28 09:21:34,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:21:34,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957770666] [2023-01-28 09:21:34,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:21:34,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:21:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:21:35,348 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-01-28 09:21:35,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:21:35,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957770666] [2023-01-28 09:21:35,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957770666] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:21:35,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:21:35,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:21:35,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034048500] [2023-01-28 09:21:35,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:21:35,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:21:35,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:21:35,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:21:35,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:21:35,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 381 out of 983 [2023-01-28 09:21:35,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 99 transitions, 750 flow. Second operand has 3 states, 3 states have (on average 390.3333333333333) internal successors, (1171), 3 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:35,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:21:35,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 381 of 983 [2023-01-28 09:21:35,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:21:35,740 INFO L130 PetriNetUnfolder]: 249/438 cut-off events. [2023-01-28 09:21:35,740 INFO L131 PetriNetUnfolder]: For 535/535 co-relation queries the response was YES. [2023-01-28 09:21:35,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 438 events. 249/438 cut-off events. For 535/535 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1190 event pairs, 46 based on Foata normal form. 14/330 useless extension candidates. Maximal degree in co-relation 1699. Up to 275 conditions per place. [2023-01-28 09:21:35,743 INFO L137 encePairwiseOnDemand]: 976/983 looper letters, 117 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2023-01-28 09:21:35,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 120 transitions, 1093 flow [2023-01-28 09:21:35,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:21:35,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:21:35,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1201 transitions. [2023-01-28 09:21:35,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4072566971854866 [2023-01-28 09:21:35,745 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1201 transitions. [2023-01-28 09:21:35,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1201 transitions. [2023-01-28 09:21:35,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:21:35,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1201 transitions. [2023-01-28 09:21:35,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 400.3333333333333) internal successors, (1201), 3 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:35,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:35,749 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:35,749 INFO L175 Difference]: Start difference. First operand has 76 places, 99 transitions, 750 flow. Second operand 3 states and 1201 transitions. [2023-01-28 09:21:35,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 120 transitions, 1093 flow [2023-01-28 09:21:35,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 120 transitions, 1044 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-01-28 09:21:35,753 INFO L231 Difference]: Finished difference. Result has 74 places, 102 transitions, 759 flow [2023-01-28 09:21:35,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=759, PETRI_PLACES=74, PETRI_TRANSITIONS=102} [2023-01-28 09:21:35,754 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2023-01-28 09:21:35,754 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 102 transitions, 759 flow [2023-01-28 09:21:35,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 390.3333333333333) internal successors, (1171), 3 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:35,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:21:35,754 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:21:35,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 09:21:35,754 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:21:35,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:21:35,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1325857365, now seen corresponding path program 1 times [2023-01-28 09:21:35,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:21:35,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005488635] [2023-01-28 09:21:35,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:21:35,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:21:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:21:36,155 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-01-28 09:21:36,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:21:36,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005488635] [2023-01-28 09:21:36,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005488635] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:21:36,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044545012] [2023-01-28 09:21:36,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:21:36,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:21:36,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:21:36,157 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:21:36,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 09:21:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:21:36,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-28 09:21:36,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:21:36,918 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-01-28 09:21:36,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:21:37,008 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-01-28 09:21:37,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044545012] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:21:37,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:21:37,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2023-01-28 09:21:37,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134617754] [2023-01-28 09:21:37,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:21:37,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 09:21:37,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:21:37,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 09:21:37,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=484, Unknown=0, NotChecked=0, Total=812 [2023-01-28 09:21:37,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 983 [2023-01-28 09:21:37,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 102 transitions, 759 flow. Second operand has 29 states, 29 states have (on average 312.8965517241379) internal successors, (9074), 29 states have internal predecessors, (9074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:37,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:21:37,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 983 [2023-01-28 09:21:37,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:21:37,540 INFO L130 PetriNetUnfolder]: 249/440 cut-off events. [2023-01-28 09:21:37,540 INFO L131 PetriNetUnfolder]: For 590/590 co-relation queries the response was YES. [2023-01-28 09:21:37,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1740 conditions, 440 events. 249/440 cut-off events. For 590/590 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1150 event pairs, 81 based on Foata normal form. 2/344 useless extension candidates. Maximal degree in co-relation 1370. Up to 389 conditions per place. [2023-01-28 09:21:37,543 INFO L137 encePairwiseOnDemand]: 966/983 looper letters, 44 selfloop transitions, 60 changer transitions 0/104 dead transitions. [2023-01-28 09:21:37,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 104 transitions, 987 flow [2023-01-28 09:21:37,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 09:21:37,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-28 09:21:37,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 6313 transitions. [2023-01-28 09:21:37,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3211088504577823 [2023-01-28 09:21:37,551 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 6313 transitions. [2023-01-28 09:21:37,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 6313 transitions. [2023-01-28 09:21:37,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:21:37,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 6313 transitions. [2023-01-28 09:21:37,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 315.65) internal successors, (6313), 20 states have internal predecessors, (6313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:37,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 983.0) internal successors, (20643), 21 states have internal predecessors, (20643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:37,570 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 983.0) internal successors, (20643), 21 states have internal predecessors, (20643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:37,570 INFO L175 Difference]: Start difference. First operand has 74 places, 102 transitions, 759 flow. Second operand 20 states and 6313 transitions. [2023-01-28 09:21:37,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 104 transitions, 987 flow [2023-01-28 09:21:37,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 104 transitions, 975 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-28 09:21:37,574 INFO L231 Difference]: Finished difference. Result has 92 places, 104 transitions, 897 flow [2023-01-28 09:21:37,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=897, PETRI_PLACES=92, PETRI_TRANSITIONS=104} [2023-01-28 09:21:37,574 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2023-01-28 09:21:37,574 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 104 transitions, 897 flow [2023-01-28 09:21:37,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 312.8965517241379) internal successors, (9074), 29 states have internal predecessors, (9074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:37,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:21:37,575 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:21:37,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 09:21:37,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-01-28 09:21:37,783 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:21:37,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:21:37,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1454465938, now seen corresponding path program 1 times [2023-01-28 09:21:37,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:21:37,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392907834] [2023-01-28 09:21:37,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:21:37,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:21:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:21:38,048 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-01-28 09:21:38,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:21:38,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392907834] [2023-01-28 09:21:38,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392907834] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:21:38,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:21:38,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:21:38,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725593025] [2023-01-28 09:21:38,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:21:38,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:21:38,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:21:38,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:21:38,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:21:38,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 397 out of 983 [2023-01-28 09:21:38,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 104 transitions, 897 flow. Second operand has 3 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:38,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:21:38,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 397 of 983 [2023-01-28 09:21:38,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:21:38,490 INFO L130 PetriNetUnfolder]: 276/508 cut-off events. [2023-01-28 09:21:38,490 INFO L131 PetriNetUnfolder]: For 441/441 co-relation queries the response was YES. [2023-01-28 09:21:38,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1941 conditions, 508 events. 276/508 cut-off events. For 441/441 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1574 event pairs, 88 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 1513. Up to 386 conditions per place. [2023-01-28 09:21:38,493 INFO L137 encePairwiseOnDemand]: 980/983 looper letters, 115 selfloop transitions, 3 changer transitions 0/118 dead transitions. [2023-01-28 09:21:38,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 118 transitions, 1191 flow [2023-01-28 09:21:38,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:21:38,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:21:38,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1246 transitions. [2023-01-28 09:21:38,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225161071549678 [2023-01-28 09:21:38,495 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1246 transitions. [2023-01-28 09:21:38,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1246 transitions. [2023-01-28 09:21:38,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:21:38,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1246 transitions. [2023-01-28 09:21:38,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 415.3333333333333) internal successors, (1246), 3 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:38,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:38,499 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:38,499 INFO L175 Difference]: Start difference. First operand has 92 places, 104 transitions, 897 flow. Second operand 3 states and 1246 transitions. [2023-01-28 09:21:38,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 118 transitions, 1191 flow [2023-01-28 09:21:38,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 118 transitions, 1039 flow, removed 22 selfloop flow, removed 13 redundant places. [2023-01-28 09:21:38,503 INFO L231 Difference]: Finished difference. Result has 82 places, 104 transitions, 756 flow [2023-01-28 09:21:38,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=756, PETRI_PLACES=82, PETRI_TRANSITIONS=104} [2023-01-28 09:21:38,504 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2023-01-28 09:21:38,504 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 104 transitions, 756 flow [2023-01-28 09:21:38,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:38,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:21:38,504 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:21:38,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 09:21:38,504 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:21:38,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:21:38,505 INFO L85 PathProgramCache]: Analyzing trace with hash 779212570, now seen corresponding path program 1 times [2023-01-28 09:21:38,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:21:38,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698350140] [2023-01-28 09:21:38,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:21:38,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:21:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:21:38,731 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-01-28 09:21:38,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:21:38,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698350140] [2023-01-28 09:21:38,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698350140] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:21:38,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:21:38,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:21:38,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752154089] [2023-01-28 09:21:38,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:21:38,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:21:38,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:21:38,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:21:38,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:21:38,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 397 out of 983 [2023-01-28 09:21:38,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 756 flow. Second operand has 3 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:38,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:21:38,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 397 of 983 [2023-01-28 09:21:38,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:21:39,196 INFO L130 PetriNetUnfolder]: 281/525 cut-off events. [2023-01-28 09:21:39,197 INFO L131 PetriNetUnfolder]: For 513/513 co-relation queries the response was YES. [2023-01-28 09:21:39,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1951 conditions, 525 events. 281/525 cut-off events. For 513/513 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1693 event pairs, 96 based on Foata normal form. 0/402 useless extension candidates. Maximal degree in co-relation 1626. Up to 358 conditions per place. [2023-01-28 09:21:39,200 INFO L137 encePairwiseOnDemand]: 980/983 looper letters, 116 selfloop transitions, 3 changer transitions 0/119 dead transitions. [2023-01-28 09:21:39,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 119 transitions, 1054 flow [2023-01-28 09:21:39,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:21:39,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:21:39,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1246 transitions. [2023-01-28 09:21:39,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225161071549678 [2023-01-28 09:21:39,202 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1246 transitions. [2023-01-28 09:21:39,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1246 transitions. [2023-01-28 09:21:39,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:21:39,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1246 transitions. [2023-01-28 09:21:39,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 415.3333333333333) internal successors, (1246), 3 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:39,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:39,205 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:39,205 INFO L175 Difference]: Start difference. First operand has 82 places, 104 transitions, 756 flow. Second operand 3 states and 1246 transitions. [2023-01-28 09:21:39,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 119 transitions, 1054 flow [2023-01-28 09:21:39,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 119 transitions, 1051 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 09:21:39,209 INFO L231 Difference]: Finished difference. Result has 84 places, 104 transitions, 764 flow [2023-01-28 09:21:39,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=764, PETRI_PLACES=84, PETRI_TRANSITIONS=104} [2023-01-28 09:21:39,209 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2023-01-28 09:21:39,210 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 104 transitions, 764 flow [2023-01-28 09:21:39,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:39,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:21:39,210 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:21:39,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 09:21:39,210 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:21:39,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:21:39,210 INFO L85 PathProgramCache]: Analyzing trace with hash -750295871, now seen corresponding path program 2 times [2023-01-28 09:21:39,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:21:39,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718007069] [2023-01-28 09:21:39,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:21:39,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:21:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:21:39,430 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-01-28 09:21:39,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:21:39,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718007069] [2023-01-28 09:21:39,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718007069] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:21:39,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:21:39,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:21:39,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914424865] [2023-01-28 09:21:39,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:21:39,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:21:39,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:21:39,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:21:39,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:21:39,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 397 out of 983 [2023-01-28 09:21:39,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 104 transitions, 764 flow. Second operand has 3 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:39,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:21:39,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 397 of 983 [2023-01-28 09:21:39,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:21:39,925 INFO L130 PetriNetUnfolder]: 303/579 cut-off events. [2023-01-28 09:21:39,925 INFO L131 PetriNetUnfolder]: For 625/625 co-relation queries the response was YES. [2023-01-28 09:21:39,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2167 conditions, 579 events. 303/579 cut-off events. For 625/625 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2020 event pairs, 100 based on Foata normal form. 0/456 useless extension candidates. Maximal degree in co-relation 1840. Up to 395 conditions per place. [2023-01-28 09:21:39,928 INFO L137 encePairwiseOnDemand]: 980/983 looper letters, 114 selfloop transitions, 3 changer transitions 0/117 dead transitions. [2023-01-28 09:21:39,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 117 transitions, 1057 flow [2023-01-28 09:21:39,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:21:39,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:21:39,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1244 transitions. [2023-01-28 09:21:39,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4218379111563242 [2023-01-28 09:21:39,930 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1244 transitions. [2023-01-28 09:21:39,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1244 transitions. [2023-01-28 09:21:39,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:21:39,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1244 transitions. [2023-01-28 09:21:39,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 414.6666666666667) internal successors, (1244), 3 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:39,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:39,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:39,934 INFO L175 Difference]: Start difference. First operand has 84 places, 104 transitions, 764 flow. Second operand 3 states and 1244 transitions. [2023-01-28 09:21:39,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 117 transitions, 1057 flow [2023-01-28 09:21:39,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 117 transitions, 1053 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 09:21:39,937 INFO L231 Difference]: Finished difference. Result has 86 places, 104 transitions, 772 flow [2023-01-28 09:21:39,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=772, PETRI_PLACES=86, PETRI_TRANSITIONS=104} [2023-01-28 09:21:39,938 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2023-01-28 09:21:39,938 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 104 transitions, 772 flow [2023-01-28 09:21:39,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:39,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:21:39,938 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:21:39,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 09:21:39,938 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:21:39,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:21:39,939 INFO L85 PathProgramCache]: Analyzing trace with hash -52120250, now seen corresponding path program 1 times [2023-01-28 09:21:39,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:21:39,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784901047] [2023-01-28 09:21:39,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:21:39,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:21:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:21:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-01-28 09:21:42,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:21:42,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784901047] [2023-01-28 09:21:42,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784901047] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:21:42,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:21:42,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 09:21:42,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589559523] [2023-01-28 09:21:42,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:21:42,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 09:21:42,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:21:42,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 09:21:42,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-01-28 09:21:42,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 983 [2023-01-28 09:21:42,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 104 transitions, 772 flow. Second operand has 11 states, 11 states have (on average 337.6363636363636) internal successors, (3714), 11 states have internal predecessors, (3714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:42,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:21:42,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 983 [2023-01-28 09:21:42,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:21:43,379 INFO L130 PetriNetUnfolder]: 277/529 cut-off events. [2023-01-28 09:21:43,379 INFO L131 PetriNetUnfolder]: For 595/595 co-relation queries the response was YES. [2023-01-28 09:21:43,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2064 conditions, 529 events. 277/529 cut-off events. For 595/595 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1737 event pairs, 76 based on Foata normal form. 14/426 useless extension candidates. Maximal degree in co-relation 1735. Up to 298 conditions per place. [2023-01-28 09:21:43,382 INFO L137 encePairwiseOnDemand]: 978/983 looper letters, 118 selfloop transitions, 3 changer transitions 1/122 dead transitions. [2023-01-28 09:21:43,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 122 transitions, 1097 flow [2023-01-28 09:21:43,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:21:43,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:21:43,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1396 transitions. [2023-01-28 09:21:43,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3550356052899288 [2023-01-28 09:21:43,384 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1396 transitions. [2023-01-28 09:21:43,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1396 transitions. [2023-01-28 09:21:43,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:21:43,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1396 transitions. [2023-01-28 09:21:43,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:43,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 983.0) internal successors, (4915), 5 states have internal predecessors, (4915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:43,388 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 983.0) internal successors, (4915), 5 states have internal predecessors, (4915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:43,388 INFO L175 Difference]: Start difference. First operand has 86 places, 104 transitions, 772 flow. Second operand 4 states and 1396 transitions. [2023-01-28 09:21:43,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 122 transitions, 1097 flow [2023-01-28 09:21:43,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 122 transitions, 1094 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 09:21:43,392 INFO L231 Difference]: Finished difference. Result has 90 places, 104 transitions, 780 flow [2023-01-28 09:21:43,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=780, PETRI_PLACES=90, PETRI_TRANSITIONS=104} [2023-01-28 09:21:43,393 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2023-01-28 09:21:43,393 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 104 transitions, 780 flow [2023-01-28 09:21:43,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 337.6363636363636) internal successors, (3714), 11 states have internal predecessors, (3714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:43,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:21:43,393 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:21:43,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 09:21:43,394 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:21:43,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:21:43,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1918064962, now seen corresponding path program 1 times [2023-01-28 09:21:43,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:21:43,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179438688] [2023-01-28 09:21:43,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:21:43,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:21:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:21:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-01-28 09:21:44,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:21:44,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179438688] [2023-01-28 09:21:44,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179438688] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:21:44,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:21:44,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 09:21:44,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874874273] [2023-01-28 09:21:44,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:21:44,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:21:44,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:21:44,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:21:44,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:21:44,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 983 [2023-01-28 09:21:44,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 104 transitions, 780 flow. Second operand has 7 states, 7 states have (on average 347.14285714285717) internal successors, (2430), 7 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:44,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:21:44,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 983 [2023-01-28 09:21:44,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:21:44,582 INFO L130 PetriNetUnfolder]: 223/433 cut-off events. [2023-01-28 09:21:44,582 INFO L131 PetriNetUnfolder]: For 696/696 co-relation queries the response was YES. [2023-01-28 09:21:44,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1704 conditions, 433 events. 223/433 cut-off events. For 696/696 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1299 event pairs, 62 based on Foata normal form. 16/376 useless extension candidates. Maximal degree in co-relation 1372. Up to 246 conditions per place. [2023-01-28 09:21:44,585 INFO L137 encePairwiseOnDemand]: 978/983 looper letters, 114 selfloop transitions, 3 changer transitions 1/118 dead transitions. [2023-01-28 09:21:44,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 118 transitions, 1076 flow [2023-01-28 09:21:44,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:21:44,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:21:44,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1425 transitions. [2023-01-28 09:21:44,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362410986775178 [2023-01-28 09:21:44,587 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1425 transitions. [2023-01-28 09:21:44,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1425 transitions. [2023-01-28 09:21:44,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:21:44,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1425 transitions. [2023-01-28 09:21:44,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 356.25) internal successors, (1425), 4 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:44,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 983.0) internal successors, (4915), 5 states have internal predecessors, (4915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:44,593 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 983.0) internal successors, (4915), 5 states have internal predecessors, (4915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:44,593 INFO L175 Difference]: Start difference. First operand has 90 places, 104 transitions, 780 flow. Second operand 4 states and 1425 transitions. [2023-01-28 09:21:44,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 118 transitions, 1076 flow [2023-01-28 09:21:44,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 118 transitions, 1057 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-28 09:21:44,596 INFO L231 Difference]: Finished difference. Result has 90 places, 103 transitions, 760 flow [2023-01-28 09:21:44,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=760, PETRI_PLACES=90, PETRI_TRANSITIONS=103} [2023-01-28 09:21:44,598 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2023-01-28 09:21:44,598 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 103 transitions, 760 flow [2023-01-28 09:21:44,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 347.14285714285717) internal successors, (2430), 7 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:44,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:21:44,598 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:21:44,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 09:21:44,598 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:21:44,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:21:44,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2001024701, now seen corresponding path program 1 times [2023-01-28 09:21:44,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:21:44,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697155345] [2023-01-28 09:21:44,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:21:44,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:21:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:21:44,785 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-01-28 09:21:44,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:21:44,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697155345] [2023-01-28 09:21:44,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697155345] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:21:44,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:21:44,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:21:44,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344889071] [2023-01-28 09:21:44,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:21:44,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:21:44,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:21:44,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:21:44,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:21:44,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 397 out of 983 [2023-01-28 09:21:44,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 103 transitions, 760 flow. Second operand has 3 states, 3 states have (on average 407.0) internal successors, (1221), 3 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:44,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:21:44,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 397 of 983 [2023-01-28 09:21:44,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:21:45,041 INFO L130 PetriNetUnfolder]: 232/452 cut-off events. [2023-01-28 09:21:45,042 INFO L131 PetriNetUnfolder]: For 560/560 co-relation queries the response was YES. [2023-01-28 09:21:45,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1730 conditions, 452 events. 232/452 cut-off events. For 560/560 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1357 event pairs, 87 based on Foata normal form. 0/381 useless extension candidates. Maximal degree in co-relation 1397. Up to 344 conditions per place. [2023-01-28 09:21:45,044 INFO L137 encePairwiseOnDemand]: 980/983 looper letters, 112 selfloop transitions, 3 changer transitions 0/115 dead transitions. [2023-01-28 09:21:45,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 115 transitions, 1041 flow [2023-01-28 09:21:45,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:21:45,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:21:45,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1240 transitions. [2023-01-28 09:21:45,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.420481519159037 [2023-01-28 09:21:45,046 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1240 transitions. [2023-01-28 09:21:45,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1240 transitions. [2023-01-28 09:21:45,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:21:45,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1240 transitions. [2023-01-28 09:21:45,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 413.3333333333333) internal successors, (1240), 3 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:45,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:45,050 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:45,050 INFO L175 Difference]: Start difference. First operand has 90 places, 103 transitions, 760 flow. Second operand 3 states and 1240 transitions. [2023-01-28 09:21:45,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 115 transitions, 1041 flow [2023-01-28 09:21:45,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 115 transitions, 1032 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-28 09:21:45,054 INFO L231 Difference]: Finished difference. Result has 89 places, 103 transitions, 763 flow [2023-01-28 09:21:45,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=763, PETRI_PLACES=89, PETRI_TRANSITIONS=103} [2023-01-28 09:21:45,055 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2023-01-28 09:21:45,055 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 103 transitions, 763 flow [2023-01-28 09:21:45,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 407.0) internal successors, (1221), 3 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:45,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:21:45,055 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:21:45,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 09:21:45,056 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:21:45,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:21:45,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1219073865, now seen corresponding path program 1 times [2023-01-28 09:21:45,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:21:45,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453819089] [2023-01-28 09:21:45,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:21:45,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:21:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:21:45,152 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-01-28 09:21:45,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:21:45,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453819089] [2023-01-28 09:21:45,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453819089] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:21:45,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:21:45,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:21:45,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197841110] [2023-01-28 09:21:45,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:21:45,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:21:45,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:21:45,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:21:45,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:21:45,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 983 [2023-01-28 09:21:45,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 103 transitions, 763 flow. Second operand has 3 states, 3 states have (on average 393.3333333333333) internal successors, (1180), 3 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:45,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:21:45,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 983 [2023-01-28 09:21:45,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:21:45,388 INFO L130 PetriNetUnfolder]: 207/412 cut-off events. [2023-01-28 09:21:45,389 INFO L131 PetriNetUnfolder]: For 521/521 co-relation queries the response was YES. [2023-01-28 09:21:45,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1636 conditions, 412 events. 207/412 cut-off events. For 521/521 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1188 event pairs, 67 based on Foata normal form. 14/366 useless extension candidates. Maximal degree in co-relation 1382. Up to 297 conditions per place. [2023-01-28 09:21:45,391 INFO L137 encePairwiseOnDemand]: 978/983 looper letters, 111 selfloop transitions, 4 changer transitions 0/115 dead transitions. [2023-01-28 09:21:45,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 115 transitions, 1043 flow [2023-01-28 09:21:45,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:21:45,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:21:45,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1199 transitions. [2023-01-28 09:21:45,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.406578501186843 [2023-01-28 09:21:45,393 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1199 transitions. [2023-01-28 09:21:45,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1199 transitions. [2023-01-28 09:21:45,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:21:45,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1199 transitions. [2023-01-28 09:21:45,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 399.6666666666667) internal successors, (1199), 3 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:45,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:45,396 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:45,396 INFO L175 Difference]: Start difference. First operand has 89 places, 103 transitions, 763 flow. Second operand 3 states and 1199 transitions. [2023-01-28 09:21:45,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 115 transitions, 1043 flow [2023-01-28 09:21:45,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 115 transitions, 1040 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 09:21:45,400 INFO L231 Difference]: Finished difference. Result has 92 places, 105 transitions, 794 flow [2023-01-28 09:21:45,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=794, PETRI_PLACES=92, PETRI_TRANSITIONS=105} [2023-01-28 09:21:45,400 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2023-01-28 09:21:45,400 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 105 transitions, 794 flow [2023-01-28 09:21:45,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 393.3333333333333) internal successors, (1180), 3 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:45,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:21:45,401 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:21:45,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 09:21:45,401 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:21:45,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:21:45,401 INFO L85 PathProgramCache]: Analyzing trace with hash 570594595, now seen corresponding path program 1 times [2023-01-28 09:21:45,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:21:45,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869787986] [2023-01-28 09:21:45,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:21:45,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:21:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:21:50,643 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-01-28 09:21:50,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:21:50,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869787986] [2023-01-28 09:21:50,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869787986] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:21:50,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891180086] [2023-01-28 09:21:50,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:21:50,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:21:50,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:21:50,644 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:21:50,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 09:21:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:21:51,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 42 conjunts are in the unsatisfiable core [2023-01-28 09:21:51,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:21:53,767 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:21:53,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 65 [2023-01-28 09:21:53,792 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 09:21:53,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2023-01-28 09:21:53,801 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 09:21:53,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2023-01-28 09:21:53,842 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-01-28 09:21:53,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:24:09,367 WARN L222 SmtUtils]: Spent 2.21m on a formula simplification. DAG size of input: 105 DAG size of output: 82 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 09:24:10,644 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:24:10,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 886 treesize of output 1231 Received shutdown request... [2023-01-28 09:28:39,131 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 09:28:39,133 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 09:28:39,138 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 [2023-01-28 09:28:39,138 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 09:28:39,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-01-28 09:28:39,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-28 09:28:39,337 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 76 with TraceHistMax 13,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. [2023-01-28 09:28:39,339 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 09:28:39,339 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 09:28:39,339 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:28:39,342 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 09:28:39,342 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 09:28:39,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 09:28:39 BasicIcfg [2023-01-28 09:28:39,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 09:28:39,344 INFO L158 Benchmark]: Toolchain (without parser) took 844951.82ms. Allocated memory was 373.3MB in the beginning and 2.2GB in the end (delta: 1.8GB). Free memory was 332.0MB in the beginning and 1.5GB in the end (delta: -1.1GB). Peak memory consumption was 1.4GB. Max. memory is 16.0GB. [2023-01-28 09:28:39,344 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 09:28:39,344 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.01ms. Allocated memory is still 373.3MB. Free memory was 331.5MB in the beginning and 311.4MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 09:28:39,344 INFO L158 Benchmark]: Boogie Procedure Inliner took 115.67ms. Allocated memory is still 373.3MB. Free memory was 311.4MB in the beginning and 303.5MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. [2023-01-28 09:28:39,345 INFO L158 Benchmark]: Boogie Preprocessor took 53.40ms. Allocated memory is still 373.3MB. Free memory was 303.5MB in the beginning and 296.3MB in the end (delta: 7.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. [2023-01-28 09:28:39,345 INFO L158 Benchmark]: RCFGBuilder took 2201.23ms. Allocated memory was 373.3MB in the beginning and 505.4MB in the end (delta: 132.1MB). Free memory was 296.3MB in the beginning and 394.3MB in the end (delta: -98.0MB). Peak memory consumption was 178.6MB. Max. memory is 16.0GB. [2023-01-28 09:28:39,345 INFO L158 Benchmark]: TraceAbstraction took 842163.36ms. Allocated memory was 505.4MB in the beginning and 2.2GB in the end (delta: 1.7GB). Free memory was 393.3MB in the beginning and 1.5GB in the end (delta: -1.1GB). Peak memory consumption was 1.3GB. Max. memory is 16.0GB. [2023-01-28 09:28:39,347 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 413.01ms. Allocated memory is still 373.3MB. Free memory was 331.5MB in the beginning and 311.4MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 115.67ms. Allocated memory is still 373.3MB. Free memory was 311.4MB in the beginning and 303.5MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. * Boogie Preprocessor took 53.40ms. Allocated memory is still 373.3MB. Free memory was 303.5MB in the beginning and 296.3MB in the end (delta: 7.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. * RCFGBuilder took 2201.23ms. Allocated memory was 373.3MB in the beginning and 505.4MB in the end (delta: 132.1MB). Free memory was 296.3MB in the beginning and 394.3MB in the end (delta: -98.0MB). Peak memory consumption was 178.6MB. Max. memory is 16.0GB. * TraceAbstraction took 842163.36ms. Allocated memory was 505.4MB in the beginning and 2.2GB in the end (delta: 1.7GB). Free memory was 393.3MB in the beginning and 1.5GB in the end (delta: -1.1GB). Peak memory consumption was 1.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 43.6s, 399 PlacesBefore, 30 PlacesAfterwards, 445 TransitionsBefore, 39 TransitionsAfterwards, 7700 CoEnabledTransitionPairs, 7 FixpointIterations, 273 TrivialSequentialCompositions, 115 ConcurrentSequentialCompositions, 78 TrivialYvCompositions, 25 ConcurrentYvCompositions, 37 ChoiceCompositions, 528 TotalNumberOfCompositions, 7716 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7556, independent: 7535, independent conditional: 0, independent unconditional: 7535, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4369, independent: 4350, independent conditional: 0, independent unconditional: 4350, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7556, independent: 3185, independent conditional: 0, independent unconditional: 3185, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 4369, unknown conditional: 0, unknown unconditional: 4369] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 235]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 76 with TraceHistMax 13,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 229]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 76 with TraceHistMax 13,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 230]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 76 with TraceHistMax 13,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 497 locations, 3 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: 841.9s, OverallIterations: 18, TraceHistogramMax: 13, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 43.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 821 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 821 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 442 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1914 IncrementalHoareTripleChecker+Invalid, 2356 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 442 mSolverCounterUnsat, 0 mSDtfsCounter, 1914 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 700 GetRequests, 551 SyntacticMatches, 17 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=897occurred in iteration=10, InterpolantAutomatonStates: 101, 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: 0.5s SsaConstructionTime, 181.9s SatisfiabilityAnalysisTime, 187.6s InterpolantComputationTime, 1394 NumberOfCodeBlocks, 1280 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1568 ConstructedInterpolants, 0 QuantifiedInterpolants, 9682 SizeOfPredicates, 100 NumberOfNonLiveVariables, 4115 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 29 InterpolantComputations, 13 PerfectInterpolantSequences, 3606/4017 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