/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 21:09:58,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 21:09:58,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 21:09:59,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 21:09:59,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 21:09:59,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 21:09:59,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 21:09:59,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 21:09:59,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 21:09:59,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 21:09:59,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 21:09:59,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 21:09:59,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 21:09:59,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 21:09:59,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 21:09:59,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 21:09:59,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 21:09:59,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 21:09:59,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 21:09:59,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 21:09:59,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 21:09:59,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 21:09:59,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 21:09:59,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 21:09:59,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 21:09:59,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 21:09:59,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 21:09:59,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 21:09:59,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 21:09:59,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 21:09:59,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 21:09:59,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 21:09:59,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 21:09:59,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 21:09:59,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 21:09:59,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 21:09:59,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 21:09:59,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 21:09:59,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 21:09:59,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 21:09:59,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 21:09:59,043 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 21:09:59,060 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 21:09:59,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 21:09:59,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 21:09:59,061 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 21:09:59,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 21:09:59,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 21:09:59,062 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 21:09:59,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 21:09:59,062 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 21:09:59,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 21:09:59,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 21:09:59,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 21:09:59,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 21:09:59,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 21:09:59,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 21:09:59,063 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 21:09:59,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 21:09:59,063 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 21:09:59,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 21:09:59,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 21:09:59,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 21:09:59,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 21:09:59,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 21:09:59,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:09:59,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 21:09:59,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 21:09:59,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 21:09:59,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 21:09:59,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 21:09:59,064 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 21:09:59,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 21:09:59,064 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 21:09:59,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 21:09:59,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 21:09:59,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 21:09:59,276 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 21:09:59,277 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 21:09:59,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-01-27 21:10:00,185 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 21:10:00,297 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 21:10:00,297 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-01-27 21:10:00,302 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40196c344/fb8de85766c64d1a8f3ce7c0dd9b3023/FLAG5ec4276d2 [2023-01-27 21:10:00,311 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40196c344/fb8de85766c64d1a8f3ce7c0dd9b3023 [2023-01-27 21:10:00,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 21:10:00,314 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 21:10:00,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 21:10:00,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 21:10:00,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 21:10:00,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:10:00" (1/1) ... [2023-01-27 21:10:00,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33cb2cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:00, skipping insertion in model container [2023-01-27 21:10:00,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:10:00" (1/1) ... [2023-01-27 21:10:00,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 21:10:00,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 21:10:00,467 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/parallel-ticket-4.wvr.c[3526,3539] [2023-01-27 21:10:00,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:10:00,476 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 21:10:00,500 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/parallel-ticket-4.wvr.c[3526,3539] [2023-01-27 21:10:00,501 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:10:00,506 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:10:00,506 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:10:00,510 INFO L208 MainTranslator]: Completed translation [2023-01-27 21:10:00,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:00 WrapperNode [2023-01-27 21:10:00,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 21:10:00,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 21:10:00,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 21:10:00,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 21:10:00,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:00" (1/1) ... [2023-01-27 21:10:00,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:00" (1/1) ... [2023-01-27 21:10:00,534 INFO L138 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 206 [2023-01-27 21:10:00,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 21:10:00,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 21:10:00,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 21:10:00,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 21:10:00,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:00" (1/1) ... [2023-01-27 21:10:00,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:00" (1/1) ... [2023-01-27 21:10:00,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:00" (1/1) ... [2023-01-27 21:10:00,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:00" (1/1) ... [2023-01-27 21:10:00,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:00" (1/1) ... [2023-01-27 21:10:00,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:00" (1/1) ... [2023-01-27 21:10:00,554 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:00" (1/1) ... [2023-01-27 21:10:00,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:00" (1/1) ... [2023-01-27 21:10:00,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 21:10:00,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 21:10:00,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 21:10:00,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 21:10:00,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:00" (1/1) ... [2023-01-27 21:10:00,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:10:00,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:10:00,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 21:10:00,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 21:10:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 21:10:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 21:10:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 21:10:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 21:10:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 21:10:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 21:10:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 21:10:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-27 21:10:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-27 21:10:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 21:10:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 21:10:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 21:10:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 21:10:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 21:10:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 21:10:00,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 21:10:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 21:10:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 21:10:00,604 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 21:10:00,682 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 21:10:00,683 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 21:10:00,914 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 21:10:00,964 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 21:10:00,964 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 21:10:00,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:10:00 BoogieIcfgContainer [2023-01-27 21:10:00,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 21:10:00,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 21:10:00,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 21:10:00,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 21:10:00,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 09:10:00" (1/3) ... [2023-01-27 21:10:00,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1493e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:10:00, skipping insertion in model container [2023-01-27 21:10:00,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:00" (2/3) ... [2023-01-27 21:10:00,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1493e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:10:00, skipping insertion in model container [2023-01-27 21:10:00,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:10:00" (3/3) ... [2023-01-27 21:10:00,971 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2023-01-27 21:10:00,981 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 21:10:00,982 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 21:10:00,982 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 21:10:01,040 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-27 21:10:01,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 143 transitions, 318 flow [2023-01-27 21:10:01,124 INFO L130 PetriNetUnfolder]: 2/139 cut-off events. [2023-01-27 21:10:01,124 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 21:10:01,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 139 events. 2/139 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2023-01-27 21:10:01,128 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 143 transitions, 318 flow [2023-01-27 21:10:01,131 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 127 transitions, 278 flow [2023-01-27 21:10:01,133 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 21:10:01,139 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 127 transitions, 278 flow [2023-01-27 21:10:01,141 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 127 transitions, 278 flow [2023-01-27 21:10:01,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 127 transitions, 278 flow [2023-01-27 21:10:01,179 INFO L130 PetriNetUnfolder]: 2/127 cut-off events. [2023-01-27 21:10:01,180 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 21:10:01,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 127 events. 2/127 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2023-01-27 21:10:01,181 INFO L119 LiptonReduction]: Number of co-enabled transitions 1302 [2023-01-27 21:10:04,428 INFO L134 LiptonReduction]: Checked pairs total: 7253 [2023-01-27 21:10:04,428 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-01-27 21:10:04,438 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 21:10:04,442 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;@7cf4d99d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 21:10:04,442 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-27 21:10:04,447 INFO L130 PetriNetUnfolder]: 0/33 cut-off events. [2023-01-27 21:10:04,448 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 21:10:04,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:04,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:04,449 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:10:04,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:04,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1293402980, now seen corresponding path program 1 times [2023-01-27 21:10:04,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:04,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601780418] [2023-01-27 21:10:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:04,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:05,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:05,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:05,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601780418] [2023-01-27 21:10:05,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601780418] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:05,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:05,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 21:10:05,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245833553] [2023-01-27 21:10:05,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:05,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 21:10:05,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:05,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 21:10:05,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-01-27 21:10:05,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 244 [2023-01-27 21:10:05,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 92 flow. Second operand has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:05,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:05,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 244 [2023-01-27 21:10:05,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:06,669 INFO L130 PetriNetUnfolder]: 9301/13074 cut-off events. [2023-01-27 21:10:06,669 INFO L131 PetriNetUnfolder]: For 1184/1184 co-relation queries the response was YES. [2023-01-27 21:10:06,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27015 conditions, 13074 events. 9301/13074 cut-off events. For 1184/1184 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 66417 event pairs, 1586 based on Foata normal form. 2/13076 useless extension candidates. Maximal degree in co-relation 26391. Up to 3581 conditions per place. [2023-01-27 21:10:06,718 INFO L137 encePairwiseOnDemand]: 232/244 looper letters, 114 selfloop transitions, 22 changer transitions 27/163 dead transitions. [2023-01-27 21:10:06,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 163 transitions, 742 flow [2023-01-27 21:10:06,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 21:10:06,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 21:10:06,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1092 transitions. [2023-01-27 21:10:06,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972677595628415 [2023-01-27 21:10:06,730 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1092 transitions. [2023-01-27 21:10:06,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1092 transitions. [2023-01-27 21:10:06,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:06,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1092 transitions. [2023-01-27 21:10:06,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 121.33333333333333) internal successors, (1092), 9 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:06,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:06,744 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:06,745 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 92 flow. Second operand 9 states and 1092 transitions. [2023-01-27 21:10:06,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 163 transitions, 742 flow [2023-01-27 21:10:06,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 163 transitions, 682 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-27 21:10:06,757 INFO L231 Difference]: Finished difference. Result has 53 places, 59 transitions, 237 flow [2023-01-27 21:10:06,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=237, PETRI_PLACES=53, PETRI_TRANSITIONS=59} [2023-01-27 21:10:06,760 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 6 predicate places. [2023-01-27 21:10:06,760 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 59 transitions, 237 flow [2023-01-27 21:10:06,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:06,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:06,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:06,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 21:10:06,762 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:10:06,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:06,762 INFO L85 PathProgramCache]: Analyzing trace with hash -507591758, now seen corresponding path program 2 times [2023-01-27 21:10:06,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:06,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323881656] [2023-01-27 21:10:06,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:06,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:06,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:06,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:06,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323881656] [2023-01-27 21:10:06,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323881656] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:06,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:06,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 21:10:06,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867811137] [2023-01-27 21:10:06,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:06,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 21:10:06,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:06,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 21:10:06,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-27 21:10:06,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-01-27 21:10:06,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 59 transitions, 237 flow. Second operand has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:06,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:06,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-01-27 21:10:06,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:07,345 INFO L130 PetriNetUnfolder]: 3862/6276 cut-off events. [2023-01-27 21:10:07,345 INFO L131 PetriNetUnfolder]: For 2304/2392 co-relation queries the response was YES. [2023-01-27 21:10:07,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15084 conditions, 6276 events. 3862/6276 cut-off events. For 2304/2392 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 39848 event pairs, 359 based on Foata normal form. 96/6280 useless extension candidates. Maximal degree in co-relation 10581. Up to 2014 conditions per place. [2023-01-27 21:10:07,393 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 79 selfloop transitions, 37 changer transitions 1/141 dead transitions. [2023-01-27 21:10:07,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 141 transitions, 702 flow [2023-01-27 21:10:07,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 21:10:07,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 21:10:07,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 900 transitions. [2023-01-27 21:10:07,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5269320843091335 [2023-01-27 21:10:07,396 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 900 transitions. [2023-01-27 21:10:07,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 900 transitions. [2023-01-27 21:10:07,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:07,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 900 transitions. [2023-01-27 21:10:07,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 128.57142857142858) internal successors, (900), 7 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:07,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:07,401 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:07,401 INFO L175 Difference]: Start difference. First operand has 53 places, 59 transitions, 237 flow. Second operand 7 states and 900 transitions. [2023-01-27 21:10:07,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 141 transitions, 702 flow [2023-01-27 21:10:07,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 141 transitions, 687 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-27 21:10:07,414 INFO L231 Difference]: Finished difference. Result has 59 places, 86 transitions, 396 flow [2023-01-27 21:10:07,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=396, PETRI_PLACES=59, PETRI_TRANSITIONS=86} [2023-01-27 21:10:07,415 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2023-01-27 21:10:07,415 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 86 transitions, 396 flow [2023-01-27 21:10:07,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:07,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:07,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:07,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 21:10:07,416 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:10:07,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:07,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1824461242, now seen corresponding path program 3 times [2023-01-27 21:10:07,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:07,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907660744] [2023-01-27 21:10:07,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:07,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:07,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:07,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:07,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907660744] [2023-01-27 21:10:07,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907660744] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:07,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:07,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 21:10:07,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907705182] [2023-01-27 21:10:07,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:07,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 21:10:07,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:07,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 21:10:07,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 21:10:07,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-01-27 21:10:07,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 86 transitions, 396 flow. Second operand has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:07,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:07,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-01-27 21:10:07,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:08,143 INFO L130 PetriNetUnfolder]: 4747/7982 cut-off events. [2023-01-27 21:10:08,144 INFO L131 PetriNetUnfolder]: For 7289/7737 co-relation queries the response was YES. [2023-01-27 21:10:08,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22755 conditions, 7982 events. 4747/7982 cut-off events. For 7289/7737 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 55540 event pairs, 1034 based on Foata normal form. 442/8284 useless extension candidates. Maximal degree in co-relation 13218. Up to 2263 conditions per place. [2023-01-27 21:10:08,184 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 94 selfloop transitions, 47 changer transitions 0/165 dead transitions. [2023-01-27 21:10:08,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 165 transitions, 992 flow [2023-01-27 21:10:08,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 21:10:08,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 21:10:08,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 653 transitions. [2023-01-27 21:10:08,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5352459016393443 [2023-01-27 21:10:08,186 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 653 transitions. [2023-01-27 21:10:08,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 653 transitions. [2023-01-27 21:10:08,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:08,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 653 transitions. [2023-01-27 21:10:08,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:08,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:08,189 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:08,189 INFO L175 Difference]: Start difference. First operand has 59 places, 86 transitions, 396 flow. Second operand 5 states and 653 transitions. [2023-01-27 21:10:08,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 165 transitions, 992 flow [2023-01-27 21:10:08,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 165 transitions, 927 flow, removed 30 selfloop flow, removed 1 redundant places. [2023-01-27 21:10:08,206 INFO L231 Difference]: Finished difference. Result has 64 places, 118 transitions, 691 flow [2023-01-27 21:10:08,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=691, PETRI_PLACES=64, PETRI_TRANSITIONS=118} [2023-01-27 21:10:08,207 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 17 predicate places. [2023-01-27 21:10:08,207 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 118 transitions, 691 flow [2023-01-27 21:10:08,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:08,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:08,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:08,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 21:10:08,208 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:10:08,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:08,208 INFO L85 PathProgramCache]: Analyzing trace with hash 434887448, now seen corresponding path program 4 times [2023-01-27 21:10:08,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:08,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626735710] [2023-01-27 21:10:08,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:08,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:08,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:08,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:08,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626735710] [2023-01-27 21:10:08,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626735710] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:08,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:08,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:10:08,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331516632] [2023-01-27 21:10:08,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:08,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:10:08,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:08,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:10:08,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:10:08,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-01-27 21:10:08,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 118 transitions, 691 flow. Second operand has 6 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:08,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:08,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-01-27 21:10:08,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:08,992 INFO L130 PetriNetUnfolder]: 5420/9283 cut-off events. [2023-01-27 21:10:08,992 INFO L131 PetriNetUnfolder]: For 17144/18398 co-relation queries the response was YES. [2023-01-27 21:10:09,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30516 conditions, 9283 events. 5420/9283 cut-off events. For 17144/18398 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 67609 event pairs, 797 based on Foata normal form. 484/9579 useless extension candidates. Maximal degree in co-relation 16238. Up to 3121 conditions per place. [2023-01-27 21:10:09,044 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 95 selfloop transitions, 82 changer transitions 2/203 dead transitions. [2023-01-27 21:10:09,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 203 transitions, 1424 flow [2023-01-27 21:10:09,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 21:10:09,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 21:10:09,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 791 transitions. [2023-01-27 21:10:09,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403005464480874 [2023-01-27 21:10:09,048 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 791 transitions. [2023-01-27 21:10:09,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 791 transitions. [2023-01-27 21:10:09,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:09,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 791 transitions. [2023-01-27 21:10:09,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 131.83333333333334) internal successors, (791), 6 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:09,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 244.0) internal successors, (1708), 7 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:09,057 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 244.0) internal successors, (1708), 7 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:09,057 INFO L175 Difference]: Start difference. First operand has 64 places, 118 transitions, 691 flow. Second operand 6 states and 791 transitions. [2023-01-27 21:10:09,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 203 transitions, 1424 flow [2023-01-27 21:10:09,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 203 transitions, 1383 flow, removed 17 selfloop flow, removed 1 redundant places. [2023-01-27 21:10:09,085 INFO L231 Difference]: Finished difference. Result has 70 places, 143 transitions, 1063 flow [2023-01-27 21:10:09,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1063, PETRI_PLACES=70, PETRI_TRANSITIONS=143} [2023-01-27 21:10:09,086 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 23 predicate places. [2023-01-27 21:10:09,086 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 143 transitions, 1063 flow [2023-01-27 21:10:09,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:09,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:09,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:09,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 21:10:09,087 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:10:09,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:09,087 INFO L85 PathProgramCache]: Analyzing trace with hash -2039758930, now seen corresponding path program 5 times [2023-01-27 21:10:09,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:09,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026879455] [2023-01-27 21:10:09,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:09,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:09,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:09,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:09,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026879455] [2023-01-27 21:10:09,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026879455] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:09,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:09,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:10:09,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142002439] [2023-01-27 21:10:09,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:09,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:10:09,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:09,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:10:09,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:10:09,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-01-27 21:10:09,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 143 transitions, 1063 flow. Second operand has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:09,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:09,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-01-27 21:10:09,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:09,944 INFO L130 PetriNetUnfolder]: 5294/9109 cut-off events. [2023-01-27 21:10:09,944 INFO L131 PetriNetUnfolder]: For 25429/26977 co-relation queries the response was YES. [2023-01-27 21:10:09,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33888 conditions, 9109 events. 5294/9109 cut-off events. For 25429/26977 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 64521 event pairs, 1136 based on Foata normal form. 548/9533 useless extension candidates. Maximal degree in co-relation 18074. Up to 6595 conditions per place. [2023-01-27 21:10:09,997 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 160 selfloop transitions, 62 changer transitions 0/245 dead transitions. [2023-01-27 21:10:09,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 245 transitions, 2194 flow [2023-01-27 21:10:09,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 21:10:09,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 21:10:09,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 869 transitions. [2023-01-27 21:10:09,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087822014051522 [2023-01-27 21:10:09,999 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 869 transitions. [2023-01-27 21:10:09,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 869 transitions. [2023-01-27 21:10:10,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:10,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 869 transitions. [2023-01-27 21:10:10,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 124.14285714285714) internal successors, (869), 7 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:10,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:10,003 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:10,003 INFO L175 Difference]: Start difference. First operand has 70 places, 143 transitions, 1063 flow. Second operand 7 states and 869 transitions. [2023-01-27 21:10:10,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 245 transitions, 2194 flow [2023-01-27 21:10:10,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 245 transitions, 2188 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-01-27 21:10:10,036 INFO L231 Difference]: Finished difference. Result has 79 places, 191 transitions, 1750 flow [2023-01-27 21:10:10,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1750, PETRI_PLACES=79, PETRI_TRANSITIONS=191} [2023-01-27 21:10:10,038 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 32 predicate places. [2023-01-27 21:10:10,038 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 191 transitions, 1750 flow [2023-01-27 21:10:10,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:10,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:10,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:10,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 21:10:10,038 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:10:10,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:10,039 INFO L85 PathProgramCache]: Analyzing trace with hash 2090481260, now seen corresponding path program 6 times [2023-01-27 21:10:10,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:10,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419999624] [2023-01-27 21:10:10,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:10,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:10,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:10,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:10,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419999624] [2023-01-27 21:10:10,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419999624] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:10,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:10,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 21:10:10,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95733616] [2023-01-27 21:10:10,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:10,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 21:10:10,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:10,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 21:10:10,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-27 21:10:10,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-01-27 21:10:10,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 191 transitions, 1750 flow. Second operand has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:10,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:10,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-01-27 21:10:10,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:10,904 INFO L130 PetriNetUnfolder]: 5631/9882 cut-off events. [2023-01-27 21:10:10,904 INFO L131 PetriNetUnfolder]: For 37871/39983 co-relation queries the response was YES. [2023-01-27 21:10:10,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39554 conditions, 9882 events. 5631/9882 cut-off events. For 37871/39983 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 73994 event pairs, 558 based on Foata normal form. 1110/10828 useless extension candidates. Maximal degree in co-relation 20952. Up to 3367 conditions per place. [2023-01-27 21:10:11,032 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 84 selfloop transitions, 158 changer transitions 1/266 dead transitions. [2023-01-27 21:10:11,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 266 transitions, 2634 flow [2023-01-27 21:10:11,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 21:10:11,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 21:10:11,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 905 transitions. [2023-01-27 21:10:11,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5298594847775175 [2023-01-27 21:10:11,034 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 905 transitions. [2023-01-27 21:10:11,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 905 transitions. [2023-01-27 21:10:11,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:11,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 905 transitions. [2023-01-27 21:10:11,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 129.28571428571428) internal successors, (905), 7 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:11,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:11,039 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:11,039 INFO L175 Difference]: Start difference. First operand has 79 places, 191 transitions, 1750 flow. Second operand 7 states and 905 transitions. [2023-01-27 21:10:11,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 266 transitions, 2634 flow [2023-01-27 21:10:11,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 266 transitions, 2629 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 21:10:11,081 INFO L231 Difference]: Finished difference. Result has 85 places, 206 transitions, 2286 flow [2023-01-27 21:10:11,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2286, PETRI_PLACES=85, PETRI_TRANSITIONS=206} [2023-01-27 21:10:11,083 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 38 predicate places. [2023-01-27 21:10:11,083 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 206 transitions, 2286 flow [2023-01-27 21:10:11,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:11,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:11,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:11,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 21:10:11,084 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:10:11,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:11,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1438799446, now seen corresponding path program 7 times [2023-01-27 21:10:11,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:11,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845854097] [2023-01-27 21:10:11,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:11,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:11,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:11,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:11,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845854097] [2023-01-27 21:10:11,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845854097] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:11,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:11,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 21:10:11,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983206539] [2023-01-27 21:10:11,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:11,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 21:10:11,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:11,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 21:10:11,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 21:10:11,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-01-27 21:10:11,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 206 transitions, 2286 flow. Second operand has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:11,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:11,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-01-27 21:10:11,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:11,864 INFO L130 PetriNetUnfolder]: 4879/8641 cut-off events. [2023-01-27 21:10:11,865 INFO L131 PetriNetUnfolder]: For 45152/46522 co-relation queries the response was YES. [2023-01-27 21:10:11,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38349 conditions, 8641 events. 4879/8641 cut-off events. For 45152/46522 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 63731 event pairs, 1139 based on Foata normal form. 582/9118 useless extension candidates. Maximal degree in co-relation 18495. Up to 2545 conditions per place. [2023-01-27 21:10:11,911 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 115 selfloop transitions, 105 changer transitions 10/252 dead transitions. [2023-01-27 21:10:11,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 252 transitions, 2898 flow [2023-01-27 21:10:11,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 21:10:11,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 21:10:11,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 657 transitions. [2023-01-27 21:10:11,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5385245901639344 [2023-01-27 21:10:11,913 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 657 transitions. [2023-01-27 21:10:11,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 657 transitions. [2023-01-27 21:10:11,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:11,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 657 transitions. [2023-01-27 21:10:11,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.4) internal successors, (657), 5 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:11,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:11,916 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:11,916 INFO L175 Difference]: Start difference. First operand has 85 places, 206 transitions, 2286 flow. Second operand 5 states and 657 transitions. [2023-01-27 21:10:11,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 252 transitions, 2898 flow [2023-01-27 21:10:11,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 252 transitions, 2651 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 21:10:11,953 INFO L231 Difference]: Finished difference. Result has 87 places, 195 transitions, 2195 flow [2023-01-27 21:10:11,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=1729, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2195, PETRI_PLACES=87, PETRI_TRANSITIONS=195} [2023-01-27 21:10:11,954 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 40 predicate places. [2023-01-27 21:10:11,954 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 195 transitions, 2195 flow [2023-01-27 21:10:11,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:11,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:11,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:11,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 21:10:11,954 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:10:11,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:11,955 INFO L85 PathProgramCache]: Analyzing trace with hash 269622218, now seen corresponding path program 8 times [2023-01-27 21:10:11,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:11,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160757363] [2023-01-27 21:10:11,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:11,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:12,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:12,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:12,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160757363] [2023-01-27 21:10:12,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160757363] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:12,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:12,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 21:10:12,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893981377] [2023-01-27 21:10:12,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:12,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 21:10:12,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:12,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 21:10:12,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 21:10:12,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-01-27 21:10:12,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 195 transitions, 2195 flow. Second operand has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:12,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:12,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-01-27 21:10:12,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:12,539 INFO L130 PetriNetUnfolder]: 2907/5561 cut-off events. [2023-01-27 21:10:12,539 INFO L131 PetriNetUnfolder]: For 30881/32021 co-relation queries the response was YES. [2023-01-27 21:10:12,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24780 conditions, 5561 events. 2907/5561 cut-off events. For 30881/32021 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 40416 event pairs, 550 based on Foata normal form. 796/6319 useless extension candidates. Maximal degree in co-relation 17474. Up to 1645 conditions per place. [2023-01-27 21:10:12,563 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 111 selfloop transitions, 105 changer transitions 1/234 dead transitions. [2023-01-27 21:10:12,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 234 transitions, 2814 flow [2023-01-27 21:10:12,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 21:10:12,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 21:10:12,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 651 transitions. [2023-01-27 21:10:12,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5336065573770492 [2023-01-27 21:10:12,565 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 651 transitions. [2023-01-27 21:10:12,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 651 transitions. [2023-01-27 21:10:12,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:12,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 651 transitions. [2023-01-27 21:10:12,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.2) internal successors, (651), 5 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:12,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:12,568 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:12,568 INFO L175 Difference]: Start difference. First operand has 87 places, 195 transitions, 2195 flow. Second operand 5 states and 651 transitions. [2023-01-27 21:10:12,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 234 transitions, 2814 flow [2023-01-27 21:10:12,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 234 transitions, 2692 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-01-27 21:10:12,594 INFO L231 Difference]: Finished difference. Result has 86 places, 191 transitions, 2354 flow [2023-01-27 21:10:12,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2354, PETRI_PLACES=86, PETRI_TRANSITIONS=191} [2023-01-27 21:10:12,595 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 39 predicate places. [2023-01-27 21:10:12,595 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 191 transitions, 2354 flow [2023-01-27 21:10:12,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:12,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:12,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:12,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 21:10:12,596 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:10:12,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:12,596 INFO L85 PathProgramCache]: Analyzing trace with hash 2049779478, now seen corresponding path program 9 times [2023-01-27 21:10:12,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:12,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075518476] [2023-01-27 21:10:12,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:12,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:12,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:12,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:12,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075518476] [2023-01-27 21:10:12,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075518476] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:12,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:12,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 21:10:12,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126476048] [2023-01-27 21:10:12,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:12,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 21:10:12,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:12,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 21:10:12,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-27 21:10:12,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-01-27 21:10:12,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 191 transitions, 2354 flow. Second operand has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:12,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:12,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-01-27 21:10:12,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:13,326 INFO L130 PetriNetUnfolder]: 3082/5856 cut-off events. [2023-01-27 21:10:13,327 INFO L131 PetriNetUnfolder]: For 37826/39306 co-relation queries the response was YES. [2023-01-27 21:10:13,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27626 conditions, 5856 events. 3082/5856 cut-off events. For 37826/39306 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 42322 event pairs, 564 based on Foata normal form. 674/6450 useless extension candidates. Maximal degree in co-relation 17230. Up to 3290 conditions per place. [2023-01-27 21:10:13,360 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 184 selfloop transitions, 93 changer transitions 4/298 dead transitions. [2023-01-27 21:10:13,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 298 transitions, 3844 flow [2023-01-27 21:10:13,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 21:10:13,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 21:10:13,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1342 transitions. [2023-01-27 21:10:13,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-01-27 21:10:13,363 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1342 transitions. [2023-01-27 21:10:13,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1342 transitions. [2023-01-27 21:10:13,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:13,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1342 transitions. [2023-01-27 21:10:13,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 122.0) internal successors, (1342), 11 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:13,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 244.0) internal successors, (2928), 12 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:13,368 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 244.0) internal successors, (2928), 12 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:13,368 INFO L175 Difference]: Start difference. First operand has 86 places, 191 transitions, 2354 flow. Second operand 11 states and 1342 transitions. [2023-01-27 21:10:13,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 298 transitions, 3844 flow [2023-01-27 21:10:13,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 298 transitions, 3697 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 21:10:13,396 INFO L231 Difference]: Finished difference. Result has 97 places, 226 transitions, 3035 flow [2023-01-27 21:10:13,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=2243, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3035, PETRI_PLACES=97, PETRI_TRANSITIONS=226} [2023-01-27 21:10:13,397 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 50 predicate places. [2023-01-27 21:10:13,398 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 226 transitions, 3035 flow [2023-01-27 21:10:13,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:13,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:13,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:13,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 21:10:13,398 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:10:13,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:13,399 INFO L85 PathProgramCache]: Analyzing trace with hash 488580814, now seen corresponding path program 10 times [2023-01-27 21:10:13,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:13,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801807830] [2023-01-27 21:10:13,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:13,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:13,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:13,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:13,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801807830] [2023-01-27 21:10:13,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801807830] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:13,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:13,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 21:10:13,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785702859] [2023-01-27 21:10:13,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:13,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 21:10:13,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:13,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 21:10:13,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-27 21:10:13,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-01-27 21:10:13,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 226 transitions, 3035 flow. Second operand has 7 states, 7 states have (on average 115.14285714285714) internal successors, (806), 7 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:13,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:13,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-01-27 21:10:13,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:14,212 INFO L130 PetriNetUnfolder]: 3335/6411 cut-off events. [2023-01-27 21:10:14,212 INFO L131 PetriNetUnfolder]: For 48553/50375 co-relation queries the response was YES. [2023-01-27 21:10:14,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31177 conditions, 6411 events. 3335/6411 cut-off events. For 48553/50375 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 48006 event pairs, 455 based on Foata normal form. 1044/7357 useless extension candidates. Maximal degree in co-relation 18828. Up to 2888 conditions per place. [2023-01-27 21:10:14,249 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 180 selfloop transitions, 117 changer transitions 4/318 dead transitions. [2023-01-27 21:10:14,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 318 transitions, 4320 flow [2023-01-27 21:10:14,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 21:10:14,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 21:10:14,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1118 transitions. [2023-01-27 21:10:14,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5091074681238615 [2023-01-27 21:10:14,252 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1118 transitions. [2023-01-27 21:10:14,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1118 transitions. [2023-01-27 21:10:14,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:14,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1118 transitions. [2023-01-27 21:10:14,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 124.22222222222223) internal successors, (1118), 9 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:14,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:14,256 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:14,256 INFO L175 Difference]: Start difference. First operand has 97 places, 226 transitions, 3035 flow. Second operand 9 states and 1118 transitions. [2023-01-27 21:10:14,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 318 transitions, 4320 flow [2023-01-27 21:10:14,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 318 transitions, 4179 flow, removed 41 selfloop flow, removed 3 redundant places. [2023-01-27 21:10:14,305 INFO L231 Difference]: Finished difference. Result has 105 places, 251 transitions, 3707 flow [2023-01-27 21:10:14,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=2906, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3707, PETRI_PLACES=105, PETRI_TRANSITIONS=251} [2023-01-27 21:10:14,305 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 58 predicate places. [2023-01-27 21:10:14,305 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 251 transitions, 3707 flow [2023-01-27 21:10:14,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.14285714285714) internal successors, (806), 7 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:14,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:14,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:14,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 21:10:14,306 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:10:14,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:14,306 INFO L85 PathProgramCache]: Analyzing trace with hash 551606176, now seen corresponding path program 11 times [2023-01-27 21:10:14,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:14,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516868935] [2023-01-27 21:10:14,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:14,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:14,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:14,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516868935] [2023-01-27 21:10:14,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516868935] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:14,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:14,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 21:10:14,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79377381] [2023-01-27 21:10:14,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:14,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 21:10:14,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:14,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 21:10:14,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-27 21:10:14,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-01-27 21:10:14,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 251 transitions, 3707 flow. Second operand has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:14,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:14,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-01-27 21:10:14,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:15,153 INFO L130 PetriNetUnfolder]: 3353/6469 cut-off events. [2023-01-27 21:10:15,153 INFO L131 PetriNetUnfolder]: For 62825/64829 co-relation queries the response was YES. [2023-01-27 21:10:15,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34159 conditions, 6469 events. 3353/6469 cut-off events. For 62825/64829 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 48763 event pairs, 862 based on Foata normal form. 626/7031 useless extension candidates. Maximal degree in co-relation 20532. Up to 4844 conditions per place. [2023-01-27 21:10:15,188 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 243 selfloop transitions, 57 changer transitions 4/321 dead transitions. [2023-01-27 21:10:15,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 321 transitions, 4817 flow [2023-01-27 21:10:15,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 21:10:15,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 21:10:15,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1448 transitions. [2023-01-27 21:10:15,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49453551912568305 [2023-01-27 21:10:15,192 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1448 transitions. [2023-01-27 21:10:15,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1448 transitions. [2023-01-27 21:10:15,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:15,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1448 transitions. [2023-01-27 21:10:15,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 120.66666666666667) internal successors, (1448), 12 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:15,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:15,198 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:15,198 INFO L175 Difference]: Start difference. First operand has 105 places, 251 transitions, 3707 flow. Second operand 12 states and 1448 transitions. [2023-01-27 21:10:15,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 321 transitions, 4817 flow [2023-01-27 21:10:15,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 321 transitions, 4808 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 21:10:15,259 INFO L231 Difference]: Finished difference. Result has 115 places, 256 transitions, 3927 flow [2023-01-27 21:10:15,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=3698, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3927, PETRI_PLACES=115, PETRI_TRANSITIONS=256} [2023-01-27 21:10:15,260 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 68 predicate places. [2023-01-27 21:10:15,260 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 256 transitions, 3927 flow [2023-01-27 21:10:15,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:15,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:15,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:15,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 21:10:15,261 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:10:15,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:15,261 INFO L85 PathProgramCache]: Analyzing trace with hash -374855666, now seen corresponding path program 12 times [2023-01-27 21:10:15,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:15,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078387845] [2023-01-27 21:10:15,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:15,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:15,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:15,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:15,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078387845] [2023-01-27 21:10:15,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078387845] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:15,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:15,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 21:10:15,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832824892] [2023-01-27 21:10:15,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:15,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 21:10:15,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:15,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 21:10:15,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-01-27 21:10:15,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-01-27 21:10:15,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 256 transitions, 3927 flow. Second operand has 8 states, 8 states have (on average 116.625) internal successors, (933), 8 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:15,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:15,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-01-27 21:10:15,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:16,074 INFO L130 PetriNetUnfolder]: 3384/6521 cut-off events. [2023-01-27 21:10:16,074 INFO L131 PetriNetUnfolder]: For 66471/68807 co-relation queries the response was YES. [2023-01-27 21:10:16,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35231 conditions, 6521 events. 3384/6521 cut-off events. For 66471/68807 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 49827 event pairs, 257 based on Foata normal form. 1482/7863 useless extension candidates. Maximal degree in co-relation 20878. Up to 2024 conditions per place. [2023-01-27 21:10:16,112 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 84 selfloop transitions, 216 changer transitions 2/319 dead transitions. [2023-01-27 21:10:16,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 319 transitions, 4858 flow [2023-01-27 21:10:16,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 21:10:16,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 21:10:16,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1137 transitions. [2023-01-27 21:10:16,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51775956284153 [2023-01-27 21:10:16,115 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1137 transitions. [2023-01-27 21:10:16,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1137 transitions. [2023-01-27 21:10:16,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:16,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1137 transitions. [2023-01-27 21:10:16,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.33333333333333) internal successors, (1137), 9 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:16,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:16,120 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:16,120 INFO L175 Difference]: Start difference. First operand has 115 places, 256 transitions, 3927 flow. Second operand 9 states and 1137 transitions. [2023-01-27 21:10:16,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 319 transitions, 4858 flow [2023-01-27 21:10:16,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 319 transitions, 4755 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-27 21:10:16,197 INFO L231 Difference]: Finished difference. Result has 116 places, 258 transitions, 4292 flow [2023-01-27 21:10:16,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=3826, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4292, PETRI_PLACES=116, PETRI_TRANSITIONS=258} [2023-01-27 21:10:16,198 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 69 predicate places. [2023-01-27 21:10:16,198 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 258 transitions, 4292 flow [2023-01-27 21:10:16,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 116.625) internal successors, (933), 8 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:16,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:16,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:16,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 21:10:16,199 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:10:16,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:16,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1489114192, now seen corresponding path program 13 times [2023-01-27 21:10:16,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:16,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629653110] [2023-01-27 21:10:16,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:16,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:16,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:16,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:16,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629653110] [2023-01-27 21:10:16,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629653110] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:16,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:16,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 21:10:16,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14536396] [2023-01-27 21:10:16,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:16,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 21:10:16,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:16,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 21:10:16,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 21:10:16,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-01-27 21:10:16,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 258 transitions, 4292 flow. Second operand has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:16,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:16,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-01-27 21:10:16,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:17,001 INFO L130 PetriNetUnfolder]: 3219/6367 cut-off events. [2023-01-27 21:10:17,001 INFO L131 PetriNetUnfolder]: For 77354/79293 co-relation queries the response was YES. [2023-01-27 21:10:17,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36618 conditions, 6367 events. 3219/6367 cut-off events. For 77354/79293 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 49900 event pairs, 333 based on Foata normal form. 1143/7376 useless extension candidates. Maximal degree in co-relation 21824. Up to 1823 conditions per place. [2023-01-27 21:10:17,044 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 109 selfloop transitions, 209 changer transitions 13/348 dead transitions. [2023-01-27 21:10:17,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 348 transitions, 5653 flow [2023-01-27 21:10:17,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 21:10:17,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 21:10:17,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1039 transitions. [2023-01-27 21:10:17,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5322745901639344 [2023-01-27 21:10:17,047 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1039 transitions. [2023-01-27 21:10:17,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1039 transitions. [2023-01-27 21:10:17,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:17,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1039 transitions. [2023-01-27 21:10:17,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.875) internal successors, (1039), 8 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:17,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:17,064 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:17,064 INFO L175 Difference]: Start difference. First operand has 116 places, 258 transitions, 4292 flow. Second operand 8 states and 1039 transitions. [2023-01-27 21:10:17,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 348 transitions, 5653 flow [2023-01-27 21:10:17,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 348 transitions, 5177 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-01-27 21:10:17,154 INFO L231 Difference]: Finished difference. Result has 118 places, 267 transitions, 4500 flow [2023-01-27 21:10:17,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=3856, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4500, PETRI_PLACES=118, PETRI_TRANSITIONS=267} [2023-01-27 21:10:17,155 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 71 predicate places. [2023-01-27 21:10:17,156 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 267 transitions, 4500 flow [2023-01-27 21:10:17,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:17,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:17,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:17,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-27 21:10:17,156 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:10:17,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:17,156 INFO L85 PathProgramCache]: Analyzing trace with hash -896967632, now seen corresponding path program 14 times [2023-01-27 21:10:17,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:17,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593765293] [2023-01-27 21:10:17,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:17,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:17,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:17,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:17,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593765293] [2023-01-27 21:10:17,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593765293] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:17,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:17,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 21:10:17,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829992390] [2023-01-27 21:10:17,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:17,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 21:10:17,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:17,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 21:10:17,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 21:10:17,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-01-27 21:10:17,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 267 transitions, 4500 flow. Second operand has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:17,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:17,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-01-27 21:10:17,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:17,855 INFO L130 PetriNetUnfolder]: 2314/4809 cut-off events. [2023-01-27 21:10:17,855 INFO L131 PetriNetUnfolder]: For 58336/59966 co-relation queries the response was YES. [2023-01-27 21:10:17,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28042 conditions, 4809 events. 2314/4809 cut-off events. For 58336/59966 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 37187 event pairs, 234 based on Foata normal form. 1077/5836 useless extension candidates. Maximal degree in co-relation 20332. Up to 1316 conditions per place. [2023-01-27 21:10:17,877 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 108 selfloop transitions, 192 changer transitions 54/371 dead transitions. [2023-01-27 21:10:17,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 371 transitions, 6401 flow [2023-01-27 21:10:17,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 21:10:17,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 21:10:17,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1033 transitions. [2023-01-27 21:10:17,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292008196721312 [2023-01-27 21:10:17,882 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1033 transitions. [2023-01-27 21:10:17,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1033 transitions. [2023-01-27 21:10:17,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:17,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1033 transitions. [2023-01-27 21:10:17,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.125) internal successors, (1033), 8 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:17,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:17,886 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:17,886 INFO L175 Difference]: Start difference. First operand has 118 places, 267 transitions, 4500 flow. Second operand 8 states and 1033 transitions. [2023-01-27 21:10:17,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 371 transitions, 6401 flow [2023-01-27 21:10:17,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 371 transitions, 6049 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-01-27 21:10:17,950 INFO L231 Difference]: Finished difference. Result has 123 places, 251 transitions, 4430 flow [2023-01-27 21:10:17,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=4118, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4430, PETRI_PLACES=123, PETRI_TRANSITIONS=251} [2023-01-27 21:10:17,950 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 76 predicate places. [2023-01-27 21:10:17,950 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 251 transitions, 4430 flow [2023-01-27 21:10:17,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:17,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:17,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:17,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-27 21:10:17,951 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:10:17,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:17,951 INFO L85 PathProgramCache]: Analyzing trace with hash -707740490, now seen corresponding path program 15 times [2023-01-27 21:10:17,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:17,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278072267] [2023-01-27 21:10:17,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:17,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:18,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:18,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:18,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278072267] [2023-01-27 21:10:18,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278072267] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:18,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:18,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 21:10:18,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088827182] [2023-01-27 21:10:18,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:18,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 21:10:18,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:18,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 21:10:18,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-01-27 21:10:18,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-01-27 21:10:18,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 251 transitions, 4430 flow. Second operand has 8 states, 8 states have (on average 116.625) internal successors, (933), 8 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:18,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:18,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-01-27 21:10:18,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:18,583 INFO L130 PetriNetUnfolder]: 2028/4303 cut-off events. [2023-01-27 21:10:18,583 INFO L131 PetriNetUnfolder]: For 53677/54805 co-relation queries the response was YES. [2023-01-27 21:10:18,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25392 conditions, 4303 events. 2028/4303 cut-off events. For 53677/54805 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 33050 event pairs, 163 based on Foata normal form. 720/4971 useless extension candidates. Maximal degree in co-relation 17761. Up to 1222 conditions per place. [2023-01-27 21:10:18,606 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 88 selfloop transitions, 195 changer transitions 29/329 dead transitions. [2023-01-27 21:10:18,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 329 transitions, 5667 flow [2023-01-27 21:10:18,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 21:10:18,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 21:10:18,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1143 transitions. [2023-01-27 21:10:18,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204918032786885 [2023-01-27 21:10:18,609 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1143 transitions. [2023-01-27 21:10:18,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1143 transitions. [2023-01-27 21:10:18,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:18,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1143 transitions. [2023-01-27 21:10:18,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:18,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:18,613 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:18,613 INFO L175 Difference]: Start difference. First operand has 123 places, 251 transitions, 4430 flow. Second operand 9 states and 1143 transitions. [2023-01-27 21:10:18,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 329 transitions, 5667 flow [2023-01-27 21:10:18,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 329 transitions, 5417 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-01-27 21:10:18,668 INFO L231 Difference]: Finished difference. Result has 127 places, 238 transitions, 4294 flow [2023-01-27 21:10:18,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=4194, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4294, PETRI_PLACES=127, PETRI_TRANSITIONS=238} [2023-01-27 21:10:18,668 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 80 predicate places. [2023-01-27 21:10:18,668 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 238 transitions, 4294 flow [2023-01-27 21:10:18,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 116.625) internal successors, (933), 8 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:18,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:18,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:18,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-27 21:10:18,669 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:10:18,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:18,669 INFO L85 PathProgramCache]: Analyzing trace with hash -975116384, now seen corresponding path program 16 times [2023-01-27 21:10:18,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:18,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904936217] [2023-01-27 21:10:18,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:18,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:18,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:18,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904936217] [2023-01-27 21:10:18,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904936217] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:18,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:18,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 21:10:18,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202242086] [2023-01-27 21:10:18,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:18,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 21:10:18,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:18,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 21:10:18,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-01-27 21:10:18,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-01-27 21:10:18,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 238 transitions, 4294 flow. Second operand has 9 states, 9 states have (on average 116.22222222222223) internal successors, (1046), 9 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:18,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:18,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-01-27 21:10:18,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:19,352 INFO L130 PetriNetUnfolder]: 1845/3962 cut-off events. [2023-01-27 21:10:19,352 INFO L131 PetriNetUnfolder]: For 56792/57858 co-relation queries the response was YES. [2023-01-27 21:10:19,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23740 conditions, 3962 events. 1845/3962 cut-off events. For 56792/57858 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 30160 event pairs, 162 based on Foata normal form. 662/4575 useless extension candidates. Maximal degree in co-relation 16125. Up to 1139 conditions per place. [2023-01-27 21:10:19,370 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 93 selfloop transitions, 193 changer transitions 14/317 dead transitions. [2023-01-27 21:10:19,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 317 transitions, 5390 flow [2023-01-27 21:10:19,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 21:10:19,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 21:10:19,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1501 transitions. [2023-01-27 21:10:19,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.512636612021858 [2023-01-27 21:10:19,373 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1501 transitions. [2023-01-27 21:10:19,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1501 transitions. [2023-01-27 21:10:19,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:19,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1501 transitions. [2023-01-27 21:10:19,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 125.08333333333333) internal successors, (1501), 12 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:19,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:19,377 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:19,377 INFO L175 Difference]: Start difference. First operand has 127 places, 238 transitions, 4294 flow. Second operand 12 states and 1501 transitions. [2023-01-27 21:10:19,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 317 transitions, 5390 flow [2023-01-27 21:10:19,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 317 transitions, 5148 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-01-27 21:10:19,432 INFO L231 Difference]: Finished difference. Result has 135 places, 235 transitions, 4356 flow [2023-01-27 21:10:19,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=4071, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4356, PETRI_PLACES=135, PETRI_TRANSITIONS=235} [2023-01-27 21:10:19,433 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 88 predicate places. [2023-01-27 21:10:19,433 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 235 transitions, 4356 flow [2023-01-27 21:10:19,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 116.22222222222223) internal successors, (1046), 9 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:19,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:19,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:19,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-27 21:10:19,433 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:10:19,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:19,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1268936102, now seen corresponding path program 17 times [2023-01-27 21:10:19,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:19,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516925433] [2023-01-27 21:10:19,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:19,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:19,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:19,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:19,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516925433] [2023-01-27 21:10:19,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516925433] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:19,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:19,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 21:10:19,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142591582] [2023-01-27 21:10:19,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:19,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 21:10:19,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:19,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 21:10:19,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-01-27 21:10:19,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-01-27 21:10:19,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 235 transitions, 4356 flow. Second operand has 9 states, 9 states have (on average 116.22222222222223) internal successors, (1046), 9 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:19,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:19,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-01-27 21:10:19,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:20,154 INFO L130 PetriNetUnfolder]: 1851/3991 cut-off events. [2023-01-27 21:10:20,154 INFO L131 PetriNetUnfolder]: For 65059/66101 co-relation queries the response was YES. [2023-01-27 21:10:20,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24505 conditions, 3991 events. 1851/3991 cut-off events. For 65059/66101 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 30554 event pairs, 171 based on Foata normal form. 632/4570 useless extension candidates. Maximal degree in co-relation 16663. Up to 1143 conditions per place. [2023-01-27 21:10:20,175 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 83 selfloop transitions, 183 changer transitions 40/323 dead transitions. [2023-01-27 21:10:20,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 323 transitions, 5771 flow [2023-01-27 21:10:20,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 21:10:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 21:10:20,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1502 transitions. [2023-01-27 21:10:20,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5129781420765027 [2023-01-27 21:10:20,177 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1502 transitions. [2023-01-27 21:10:20,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1502 transitions. [2023-01-27 21:10:20,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:20,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1502 transitions. [2023-01-27 21:10:20,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 125.16666666666667) internal successors, (1502), 12 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:20,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:20,181 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:20,181 INFO L175 Difference]: Start difference. First operand has 135 places, 235 transitions, 4356 flow. Second operand 12 states and 1502 transitions. [2023-01-27 21:10:20,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 323 transitions, 5771 flow [2023-01-27 21:10:20,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 323 transitions, 5351 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-01-27 21:10:20,236 INFO L231 Difference]: Finished difference. Result has 139 places, 225 transitions, 4138 flow [2023-01-27 21:10:20,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=3962, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4138, PETRI_PLACES=139, PETRI_TRANSITIONS=225} [2023-01-27 21:10:20,236 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 92 predicate places. [2023-01-27 21:10:20,236 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 225 transitions, 4138 flow [2023-01-27 21:10:20,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 116.22222222222223) internal successors, (1046), 9 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:20,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:20,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:20,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-27 21:10:20,237 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:10:20,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:20,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1959702774, now seen corresponding path program 18 times [2023-01-27 21:10:20,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:20,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94296191] [2023-01-27 21:10:20,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:20,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:20,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:20,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:20,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94296191] [2023-01-27 21:10:20,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94296191] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:20,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:20,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 21:10:20,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456860403] [2023-01-27 21:10:20,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:20,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 21:10:20,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:20,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 21:10:20,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-01-27 21:10:20,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-01-27 21:10:20,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 225 transitions, 4138 flow. Second operand has 9 states, 9 states have (on average 116.22222222222223) internal successors, (1046), 9 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:20,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:20,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-01-27 21:10:20,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:20,931 INFO L130 PetriNetUnfolder]: 1422/3164 cut-off events. [2023-01-27 21:10:20,932 INFO L131 PetriNetUnfolder]: For 49418/50256 co-relation queries the response was YES. [2023-01-27 21:10:20,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19798 conditions, 3164 events. 1422/3164 cut-off events. For 49418/50256 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 23579 event pairs, 139 based on Foata normal form. 570/3694 useless extension candidates. Maximal degree in co-relation 13989. Up to 911 conditions per place. [2023-01-27 21:10:20,947 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 85 selfloop transitions, 146 changer transitions 51/296 dead transitions. [2023-01-27 21:10:20,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 296 transitions, 5142 flow [2023-01-27 21:10:20,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 21:10:20,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 21:10:20,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1498 transitions. [2023-01-27 21:10:20,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116120218579235 [2023-01-27 21:10:20,949 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1498 transitions. [2023-01-27 21:10:20,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1498 transitions. [2023-01-27 21:10:20,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:20,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1498 transitions. [2023-01-27 21:10:20,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 124.83333333333333) internal successors, (1498), 12 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:20,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:20,953 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:20,953 INFO L175 Difference]: Start difference. First operand has 139 places, 225 transitions, 4138 flow. Second operand 12 states and 1498 transitions. [2023-01-27 21:10:20,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 296 transitions, 5142 flow [2023-01-27 21:10:20,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 296 transitions, 4752 flow, removed 11 selfloop flow, removed 10 redundant places. [2023-01-27 21:10:21,003 INFO L231 Difference]: Finished difference. Result has 138 places, 183 transitions, 3252 flow [2023-01-27 21:10:21,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=3479, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3252, PETRI_PLACES=138, PETRI_TRANSITIONS=183} [2023-01-27 21:10:21,004 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 91 predicate places. [2023-01-27 21:10:21,005 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 183 transitions, 3252 flow [2023-01-27 21:10:21,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 116.22222222222223) internal successors, (1046), 9 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:21,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:21,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:21,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-27 21:10:21,005 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:10:21,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:21,005 INFO L85 PathProgramCache]: Analyzing trace with hash 224756250, now seen corresponding path program 19 times [2023-01-27 21:10:21,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:21,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687978124] [2023-01-27 21:10:21,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:21,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:21,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:21,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:21,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687978124] [2023-01-27 21:10:21,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687978124] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:21,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:21,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 21:10:21,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819034322] [2023-01-27 21:10:21,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:21,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 21:10:21,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:21,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 21:10:21,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-01-27 21:10:21,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-01-27 21:10:21,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 183 transitions, 3252 flow. Second operand has 9 states, 9 states have (on average 116.22222222222223) internal successors, (1046), 9 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:21,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:21,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-01-27 21:10:21,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:21,313 INFO L130 PetriNetUnfolder]: 271/644 cut-off events. [2023-01-27 21:10:21,314 INFO L131 PetriNetUnfolder]: For 10733/10865 co-relation queries the response was YES. [2023-01-27 21:10:21,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4881 conditions, 644 events. 271/644 cut-off events. For 10733/10865 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3870 event pairs, 5 based on Foata normal form. 166/810 useless extension candidates. Maximal degree in co-relation 4754. Up to 149 conditions per place. [2023-01-27 21:10:21,316 INFO L137 encePairwiseOnDemand]: 236/244 looper letters, 0 selfloop transitions, 0 changer transitions 120/120 dead transitions. [2023-01-27 21:10:21,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 120 transitions, 2211 flow [2023-01-27 21:10:21,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 21:10:21,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 21:10:21,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1436 transitions. [2023-01-27 21:10:21,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49043715846994534 [2023-01-27 21:10:21,318 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1436 transitions. [2023-01-27 21:10:21,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1436 transitions. [2023-01-27 21:10:21,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:21,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1436 transitions. [2023-01-27 21:10:21,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 119.66666666666667) internal successors, (1436), 12 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:21,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:21,322 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:21,322 INFO L175 Difference]: Start difference. First operand has 138 places, 183 transitions, 3252 flow. Second operand 12 states and 1436 transitions. [2023-01-27 21:10:21,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 120 transitions, 2211 flow [2023-01-27 21:10:21,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 120 transitions, 1975 flow, removed 40 selfloop flow, removed 17 redundant places. [2023-01-27 21:10:21,335 INFO L231 Difference]: Finished difference. Result has 114 places, 0 transitions, 0 flow [2023-01-27 21:10:21,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=114, PETRI_TRANSITIONS=0} [2023-01-27 21:10:21,335 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 67 predicate places. [2023-01-27 21:10:21,335 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 0 transitions, 0 flow [2023-01-27 21:10:21,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 116.22222222222223) internal successors, (1046), 9 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:21,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-27 21:10:21,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-01-27 21:10:21,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-27 21:10:21,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-27 21:10:21,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-01-27 21:10:21,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-27 21:10:21,338 INFO L445 BasicCegarLoop]: Path program histogram: [19] [2023-01-27 21:10:21,340 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 21:10:21,340 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 21:10:21,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 09:10:21 BasicIcfg [2023-01-27 21:10:21,342 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 21:10:21,342 INFO L158 Benchmark]: Toolchain (without parser) took 21028.47ms. Allocated memory was 541.1MB in the beginning and 1.2GB in the end (delta: 633.3MB). Free memory was 493.2MB in the beginning and 563.6MB in the end (delta: -70.4MB). Peak memory consumption was 565.7MB. Max. memory is 16.0GB. [2023-01-27 21:10:21,343 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 396.4MB. Free memory was 340.6MB in the beginning and 340.5MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 21:10:21,343 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.64ms. Allocated memory is still 541.1MB. Free memory was 493.2MB in the beginning and 481.5MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 21:10:21,343 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.11ms. Allocated memory is still 541.1MB. Free memory was 481.5MB in the beginning and 479.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 21:10:21,343 INFO L158 Benchmark]: Boogie Preprocessor took 19.81ms. Allocated memory is still 541.1MB. Free memory was 479.5MB in the beginning and 478.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 21:10:21,343 INFO L158 Benchmark]: RCFGBuilder took 409.12ms. Allocated memory is still 541.1MB. Free memory was 477.7MB in the beginning and 454.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-01-27 21:10:21,343 INFO L158 Benchmark]: TraceAbstraction took 20375.14ms. Allocated memory was 541.1MB in the beginning and 1.2GB in the end (delta: 633.3MB). Free memory was 453.9MB in the beginning and 563.6MB in the end (delta: -109.7MB). Peak memory consumption was 525.8MB. Max. memory is 16.0GB. [2023-01-27 21:10:21,344 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 396.4MB. Free memory was 340.6MB in the beginning and 340.5MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 195.64ms. Allocated memory is still 541.1MB. Free memory was 493.2MB in the beginning and 481.5MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 25.11ms. Allocated memory is still 541.1MB. Free memory was 481.5MB in the beginning and 479.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 19.81ms. Allocated memory is still 541.1MB. Free memory was 479.5MB in the beginning and 478.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 409.12ms. Allocated memory is still 541.1MB. Free memory was 477.7MB in the beginning and 454.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 20375.14ms. Allocated memory was 541.1MB in the beginning and 1.2GB in the end (delta: 633.3MB). Free memory was 453.9MB in the beginning and 563.6MB in the end (delta: -109.7MB). Peak memory consumption was 525.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 138 PlacesBefore, 47 PlacesAfterwards, 127 TransitionsBefore, 34 TransitionsAfterwards, 1302 CoEnabledTransitionPairs, 8 FixpointIterations, 69 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 101 TotalNumberOfCompositions, 7253 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2918, independent: 2652, independent conditional: 0, independent unconditional: 2652, dependent: 266, dependent conditional: 0, dependent unconditional: 266, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 625, independent: 600, independent conditional: 0, independent unconditional: 600, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2918, independent: 2052, independent conditional: 0, independent unconditional: 2052, dependent: 241, dependent conditional: 0, dependent unconditional: 241, unknown: 625, unknown conditional: 0, unknown unconditional: 625] , Statistics on independence cache: Total cache size (in pairs): 152, Positive cache size: 138, Positive conditional cache size: 0, Positive unconditional cache size: 138, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 146]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 175 locations, 5 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: 20.3s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.0s, AutomataDifference: 13.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1131 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1131 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 390 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5315 IncrementalHoareTripleChecker+Invalid, 5705 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 390 mSolverCounterUnsat, 6 mSDtfsCounter, 5315 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 182 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4500occurred in iteration=13, InterpolantAutomatonStates: 165, 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: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 646 NumberOfCodeBlocks, 646 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 627 ConstructedInterpolants, 0 QuantifiedInterpolants, 2006 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 21:10:21,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...