/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 05:37:17,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 05:37:17,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 05:37:17,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 05:37:17,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 05:37:17,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 05:37:17,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 05:37:17,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 05:37:17,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 05:37:17,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 05:37:17,512 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 05:37:17,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 05:37:17,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 05:37:17,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 05:37:17,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 05:37:17,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 05:37:17,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 05:37:17,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 05:37:17,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 05:37:17,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 05:37:17,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 05:37:17,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 05:37:17,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 05:37:17,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 05:37:17,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 05:37:17,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 05:37:17,540 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 05:37:17,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 05:37:17,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 05:37:17,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 05:37:17,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 05:37:17,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 05:37:17,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 05:37:17,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 05:37:17,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 05:37:17,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 05:37:17,546 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 05:37:17,568 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 05:37:17,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 05:37:17,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 05:37:17,569 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 05:37:17,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 05:37:17,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 05:37:17,570 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 05:37:17,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 05:37:17,571 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 05:37:17,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 05:37:17,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 05:37:17,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 05:37:17,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 05:37:17,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 05:37:17,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 05:37:17,572 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 05:37:17,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 05:37:17,572 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 05:37:17,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 05:37:17,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 05:37:17,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 05:37:17,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 05:37:17,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 05:37:17,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:37:17,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 05:37:17,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 05:37:17,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 05:37:17,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 05:37:17,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 05:37:17,573 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 05:37:17,573 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 05:37:17,573 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 05:37:17,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 05:37:17,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 05:37:17,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 05:37:17,760 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 05:37:17,760 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 05:37:17,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c [2023-01-28 05:37:18,802 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 05:37:18,985 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 05:37:18,986 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c [2023-01-28 05:37:18,991 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b65b7066/e48b691140e34cc6a7eaafa7e8378aee/FLAG468fbf4d1 [2023-01-28 05:37:19,001 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b65b7066/e48b691140e34cc6a7eaafa7e8378aee [2023-01-28 05:37:19,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 05:37:19,005 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 05:37:19,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 05:37:19,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 05:37:19,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 05:37:19,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:37:19" (1/1) ... [2023-01-28 05:37:19,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa3b6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:37:19, skipping insertion in model container [2023-01-28 05:37:19,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:37:19" (1/1) ... [2023-01-28 05:37:19,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 05:37:19,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 05:37:19,178 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/test-easy10.wvr.c[3907,3920] [2023-01-28 05:37:19,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:37:19,193 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 05:37:19,226 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/test-easy10.wvr.c[3907,3920] [2023-01-28 05:37:19,227 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:37:19,232 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 05:37:19,232 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 05:37:19,239 INFO L208 MainTranslator]: Completed translation [2023-01-28 05:37:19,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:37:19 WrapperNode [2023-01-28 05:37:19,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 05:37:19,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 05:37:19,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 05:37:19,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 05:37:19,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:37:19" (1/1) ... [2023-01-28 05:37:19,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:37:19" (1/1) ... [2023-01-28 05:37:19,281 INFO L138 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 192 [2023-01-28 05:37:19,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 05:37:19,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 05:37:19,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 05:37:19,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 05:37:19,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:37:19" (1/1) ... [2023-01-28 05:37:19,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:37:19" (1/1) ... [2023-01-28 05:37:19,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:37:19" (1/1) ... [2023-01-28 05:37:19,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:37:19" (1/1) ... [2023-01-28 05:37:19,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:37:19" (1/1) ... [2023-01-28 05:37:19,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:37:19" (1/1) ... [2023-01-28 05:37:19,296 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:37:19" (1/1) ... [2023-01-28 05:37:19,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:37:19" (1/1) ... [2023-01-28 05:37:19,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 05:37:19,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 05:37:19,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 05:37:19,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 05:37:19,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:37:19" (1/1) ... [2023-01-28 05:37:19,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:37:19,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:37:19,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 05:37:19,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 05:37:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 05:37:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 05:37:19,369 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 05:37:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 05:37:19,369 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 05:37:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 05:37:19,370 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 05:37:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-28 05:37:19,374 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-28 05:37:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 05:37:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 05:37:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 05:37:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 05:37:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 05:37:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 05:37:19,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 05:37:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 05:37:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 05:37:19,377 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 05:37:19,489 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 05:37:19,490 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 05:37:19,722 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 05:37:19,762 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 05:37:19,762 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 05:37:19,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:37:19 BoogieIcfgContainer [2023-01-28 05:37:19,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 05:37:19,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 05:37:19,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 05:37:19,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 05:37:19,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 05:37:19" (1/3) ... [2023-01-28 05:37:19,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a79cf7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:37:19, skipping insertion in model container [2023-01-28 05:37:19,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:37:19" (2/3) ... [2023-01-28 05:37:19,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a79cf7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:37:19, skipping insertion in model container [2023-01-28 05:37:19,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:37:19" (3/3) ... [2023-01-28 05:37:19,769 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2023-01-28 05:37:19,780 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 05:37:19,780 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 05:37:19,780 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 05:37:19,850 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 05:37:19,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 135 transitions, 302 flow [2023-01-28 05:37:19,930 INFO L130 PetriNetUnfolder]: 2/131 cut-off events. [2023-01-28 05:37:19,930 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 05:37:19,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 131 events. 2/131 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 76 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-01-28 05:37:19,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 135 transitions, 302 flow [2023-01-28 05:37:19,937 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 119 transitions, 262 flow [2023-01-28 05:37:19,939 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 05:37:19,944 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 119 transitions, 262 flow [2023-01-28 05:37:19,945 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 119 transitions, 262 flow [2023-01-28 05:37:19,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 119 transitions, 262 flow [2023-01-28 05:37:19,964 INFO L130 PetriNetUnfolder]: 2/119 cut-off events. [2023-01-28 05:37:19,965 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 05:37:19,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 119 events. 2/119 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-01-28 05:37:19,966 INFO L119 LiptonReduction]: Number of co-enabled transitions 1824 [2023-01-28 05:37:22,917 INFO L134 LiptonReduction]: Checked pairs total: 11399 [2023-01-28 05:37:22,917 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-01-28 05:37:22,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 05:37:22,934 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;@48e2413c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 05:37:22,934 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 05:37:22,941 INFO L130 PetriNetUnfolder]: 0/40 cut-off events. [2023-01-28 05:37:22,941 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 05:37:22,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:37:22,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:37:22,942 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)] === [2023-01-28 05:37:22,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:37:22,946 INFO L85 PathProgramCache]: Analyzing trace with hash 2048807285, now seen corresponding path program 1 times [2023-01-28 05:37:22,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:37:22,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298336084] [2023-01-28 05:37:22,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:37:22,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:37:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:37:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:37:23,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:37:23,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298336084] [2023-01-28 05:37:23,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298336084] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:37:23,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:37:23,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 05:37:23,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466544388] [2023-01-28 05:37:23,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:37:23,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:37:23,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:37:23,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:37:23,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:37:23,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-01-28 05:37:23,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:23,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:37:23,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-01-28 05:37:23,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:37:23,723 INFO L130 PetriNetUnfolder]: 585/1061 cut-off events. [2023-01-28 05:37:23,724 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2023-01-28 05:37:23,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2051 conditions, 1061 events. 585/1061 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5763 event pairs, 180 based on Foata normal form. 26/1059 useless extension candidates. Maximal degree in co-relation 1491. Up to 756 conditions per place. [2023-01-28 05:37:23,734 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-01-28 05:37:23,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 200 flow [2023-01-28 05:37:23,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:37:23,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:37:23,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-01-28 05:37:23,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2023-01-28 05:37:23,751 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-01-28 05:37:23,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-01-28 05:37:23,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:37:23,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-01-28 05:37:23,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:23,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:23,763 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:23,764 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 106 flow. Second operand 3 states and 390 transitions. [2023-01-28 05:37:23,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 200 flow [2023-01-28 05:37:23,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 180 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-28 05:37:23,770 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 98 flow [2023-01-28 05:37:23,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2023-01-28 05:37:23,775 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-01-28 05:37:23,775 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 98 flow [2023-01-28 05:37:23,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:23,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:37:23,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:37:23,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 05:37:23,776 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)] === [2023-01-28 05:37:23,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:37:23,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1246737449, now seen corresponding path program 2 times [2023-01-28 05:37:23,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:37:23,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612520252] [2023-01-28 05:37:23,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:37:23,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:37:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:37:23,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:37:23,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:37:23,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612520252] [2023-01-28 05:37:23,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612520252] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:37:23,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:37:23,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 05:37:23,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594095067] [2023-01-28 05:37:23,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:37:23,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:37:23,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:37:23,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:37:23,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:37:23,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-01-28 05:37:23,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:23,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:37:23,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-01-28 05:37:23,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:37:24,049 INFO L130 PetriNetUnfolder]: 573/989 cut-off events. [2023-01-28 05:37:24,049 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2023-01-28 05:37:24,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1978 conditions, 989 events. 573/989 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5242 event pairs, 440 based on Foata normal form. 21/986 useless extension candidates. Maximal degree in co-relation 1738. Up to 836 conditions per place. [2023-01-28 05:37:24,055 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-01-28 05:37:24,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 50 transitions, 190 flow [2023-01-28 05:37:24,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:37:24,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:37:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-01-28 05:37:24,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2023-01-28 05:37:24,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-01-28 05:37:24,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-01-28 05:37:24,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:37:24,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-01-28 05:37:24,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:24,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:24,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:24,059 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 98 flow. Second operand 3 states and 390 transitions. [2023-01-28 05:37:24,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 50 transitions, 190 flow [2023-01-28 05:37:24,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 05:37:24,060 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 102 flow [2023-01-28 05:37:24,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-01-28 05:37:24,061 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-01-28 05:37:24,061 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 102 flow [2023-01-28 05:37:24,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:24,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:37:24,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:37:24,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 05:37:24,062 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)] === [2023-01-28 05:37:24,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:37:24,062 INFO L85 PathProgramCache]: Analyzing trace with hash -794314321, now seen corresponding path program 3 times [2023-01-28 05:37:24,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:37:24,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411684314] [2023-01-28 05:37:24,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:37:24,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:37:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:37:24,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:37:24,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:37:24,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411684314] [2023-01-28 05:37:24,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411684314] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:37:24,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:37:24,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 05:37:24,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805114055] [2023-01-28 05:37:24,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:37:24,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:37:24,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:37:24,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:37:24,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:37:24,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-01-28 05:37:24,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:24,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:37:24,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-01-28 05:37:24,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:37:24,387 INFO L130 PetriNetUnfolder]: 623/1095 cut-off events. [2023-01-28 05:37:24,388 INFO L131 PetriNetUnfolder]: For 171/190 co-relation queries the response was YES. [2023-01-28 05:37:24,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2241 conditions, 1095 events. 623/1095 cut-off events. For 171/190 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5800 event pairs, 176 based on Foata normal form. 17/1068 useless extension candidates. Maximal degree in co-relation 2220. Up to 816 conditions per place. [2023-01-28 05:37:24,393 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 35 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-01-28 05:37:24,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 52 transitions, 203 flow [2023-01-28 05:37:24,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:37:24,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:37:24,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-01-28 05:37:24,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5912518853695324 [2023-01-28 05:37:24,394 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-01-28 05:37:24,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-01-28 05:37:24,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:37:24,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-01-28 05:37:24,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:24,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:24,397 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:24,397 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 102 flow. Second operand 3 states and 392 transitions. [2023-01-28 05:37:24,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 52 transitions, 203 flow [2023-01-28 05:37:24,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 199 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 05:37:24,398 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 106 flow [2023-01-28 05:37:24,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2023-01-28 05:37:24,399 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2023-01-28 05:37:24,399 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 106 flow [2023-01-28 05:37:24,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:24,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:37:24,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:37:24,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 05:37:24,399 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)] === [2023-01-28 05:37:24,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:37:24,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1839241021, now seen corresponding path program 4 times [2023-01-28 05:37:24,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:37:24,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018733435] [2023-01-28 05:37:24,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:37:24,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:37:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:37:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:37:26,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:37:26,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018733435] [2023-01-28 05:37:26,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018733435] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:37:26,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:37:26,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 05:37:26,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110268198] [2023-01-28 05:37:26,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:37:26,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 05:37:26,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:37:26,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 05:37:26,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-01-28 05:37:26,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-28 05:37:26,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 106 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:26,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:37:26,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-28 05:37:26,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:37:28,202 INFO L130 PetriNetUnfolder]: 8470/12724 cut-off events. [2023-01-28 05:37:28,202 INFO L131 PetriNetUnfolder]: For 1747/1747 co-relation queries the response was YES. [2023-01-28 05:37:28,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26988 conditions, 12724 events. 8470/12724 cut-off events. For 1747/1747 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 73112 event pairs, 1567 based on Foata normal form. 1/12717 useless extension candidates. Maximal degree in co-relation 10773. Up to 3244 conditions per place. [2023-01-28 05:37:28,268 INFO L137 encePairwiseOnDemand]: 207/221 looper letters, 224 selfloop transitions, 16 changer transitions 16/260 dead transitions. [2023-01-28 05:37:28,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 260 transitions, 1146 flow [2023-01-28 05:37:28,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 05:37:28,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 05:37:28,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1607 transitions. [2023-01-28 05:37:28,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847662141779789 [2023-01-28 05:37:28,274 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1607 transitions. [2023-01-28 05:37:28,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1607 transitions. [2023-01-28 05:37:28,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:37:28,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1607 transitions. [2023-01-28 05:37:28,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 107.13333333333334) internal successors, (1607), 15 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:28,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 221.0) internal successors, (3536), 16 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:28,290 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 221.0) internal successors, (3536), 16 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:28,291 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 106 flow. Second operand 15 states and 1607 transitions. [2023-01-28 05:37:28,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 260 transitions, 1146 flow [2023-01-28 05:37:28,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 260 transitions, 1142 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 05:37:28,299 INFO L231 Difference]: Finished difference. Result has 74 places, 56 transitions, 221 flow [2023-01-28 05:37:28,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=221, PETRI_PLACES=74, PETRI_TRANSITIONS=56} [2023-01-28 05:37:28,301 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 20 predicate places. [2023-01-28 05:37:28,301 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 56 transitions, 221 flow [2023-01-28 05:37:28,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:28,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:37:28,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:37:28,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 05:37:28,302 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)] === [2023-01-28 05:37:28,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:37:28,302 INFO L85 PathProgramCache]: Analyzing trace with hash 491926227, now seen corresponding path program 5 times [2023-01-28 05:37:28,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:37:28,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685135792] [2023-01-28 05:37:28,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:37:28,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:37:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:37:28,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:37:28,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:37:28,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685135792] [2023-01-28 05:37:28,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685135792] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:37:28,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:37:28,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 05:37:28,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66304787] [2023-01-28 05:37:28,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:37:28,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:37:28,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:37:28,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:37:28,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:37:28,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-01-28 05:37:28,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 56 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:28,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:37:28,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-01-28 05:37:28,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:37:28,664 INFO L130 PetriNetUnfolder]: 1445/2509 cut-off events. [2023-01-28 05:37:28,665 INFO L131 PetriNetUnfolder]: For 2967/3064 co-relation queries the response was YES. [2023-01-28 05:37:28,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7306 conditions, 2509 events. 1445/2509 cut-off events. For 2967/3064 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 16297 event pairs, 1093 based on Foata normal form. 59/2447 useless extension candidates. Maximal degree in co-relation 7272. Up to 2221 conditions per place. [2023-01-28 05:37:28,676 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 40 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-01-28 05:37:28,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 63 transitions, 322 flow [2023-01-28 05:37:28,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:37:28,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:37:28,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-01-28 05:37:28,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5912518853695324 [2023-01-28 05:37:28,677 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-01-28 05:37:28,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-01-28 05:37:28,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:37:28,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-01-28 05:37:28,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:28,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:28,679 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:28,679 INFO L175 Difference]: Start difference. First operand has 74 places, 56 transitions, 221 flow. Second operand 3 states and 392 transitions. [2023-01-28 05:37:28,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 63 transitions, 322 flow [2023-01-28 05:37:28,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 312 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-01-28 05:37:28,691 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 201 flow [2023-01-28 05:37:28,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2023-01-28 05:37:28,691 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2023-01-28 05:37:28,692 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 201 flow [2023-01-28 05:37:28,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:28,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:37:28,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:37:28,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 05:37:28,692 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)] === [2023-01-28 05:37:28,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:37:28,692 INFO L85 PathProgramCache]: Analyzing trace with hash 2048283425, now seen corresponding path program 6 times [2023-01-28 05:37:28,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:37:28,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33092187] [2023-01-28 05:37:28,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:37:28,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:37:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:37:29,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:37:29,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:37:29,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33092187] [2023-01-28 05:37:29,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33092187] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:37:29,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:37:29,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 05:37:29,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654276157] [2023-01-28 05:37:29,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:37:29,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 05:37:29,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:37:29,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 05:37:29,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-01-28 05:37:29,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-28 05:37:29,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 201 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:29,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:37:29,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-28 05:37:29,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:37:32,237 INFO L130 PetriNetUnfolder]: 12797/19577 cut-off events. [2023-01-28 05:37:32,238 INFO L131 PetriNetUnfolder]: For 14911/14911 co-relation queries the response was YES. [2023-01-28 05:37:32,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55233 conditions, 19577 events. 12797/19577 cut-off events. For 14911/14911 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 122873 event pairs, 2369 based on Foata normal form. 1/19578 useless extension candidates. Maximal degree in co-relation 41818. Up to 5867 conditions per place. [2023-01-28 05:37:32,322 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 208 selfloop transitions, 23 changer transitions 9/244 dead transitions. [2023-01-28 05:37:32,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 244 transitions, 1349 flow [2023-01-28 05:37:32,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 05:37:32,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 05:37:32,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1476 transitions. [2023-01-28 05:37:32,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4770523594053006 [2023-01-28 05:37:32,326 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1476 transitions. [2023-01-28 05:37:32,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1476 transitions. [2023-01-28 05:37:32,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:37:32,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1476 transitions. [2023-01-28 05:37:32,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 105.42857142857143) internal successors, (1476), 14 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:32,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:32,332 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:32,332 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 201 flow. Second operand 14 states and 1476 transitions. [2023-01-28 05:37:32,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 244 transitions, 1349 flow [2023-01-28 05:37:32,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 244 transitions, 1345 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 05:37:32,485 INFO L231 Difference]: Finished difference. Result has 92 places, 70 transitions, 412 flow [2023-01-28 05:37:32,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=412, PETRI_PLACES=92, PETRI_TRANSITIONS=70} [2023-01-28 05:37:32,485 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 38 predicate places. [2023-01-28 05:37:32,486 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 70 transitions, 412 flow [2023-01-28 05:37:32,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:32,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:37:32,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:37:32,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 05:37:32,486 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)] === [2023-01-28 05:37:32,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:37:32,487 INFO L85 PathProgramCache]: Analyzing trace with hash 516308761, now seen corresponding path program 7 times [2023-01-28 05:37:32,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:37:32,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977709624] [2023-01-28 05:37:32,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:37:32,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:37:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:37:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:37:33,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:37:33,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977709624] [2023-01-28 05:37:33,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977709624] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:37:33,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:37:33,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 05:37:33,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918667268] [2023-01-28 05:37:33,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:37:33,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 05:37:33,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:37:33,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 05:37:33,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-01-28 05:37:33,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-28 05:37:33,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 70 transitions, 412 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:33,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:37:33,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-28 05:37:33,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:37:37,699 INFO L130 PetriNetUnfolder]: 22421/34788 cut-off events. [2023-01-28 05:37:37,699 INFO L131 PetriNetUnfolder]: For 73311/73311 co-relation queries the response was YES. [2023-01-28 05:37:37,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120405 conditions, 34788 events. 22421/34788 cut-off events. For 73311/73311 co-relation queries the response was YES. Maximal size of possible extension queue 1153. Compared 246472 event pairs, 5189 based on Foata normal form. 1/34789 useless extension candidates. Maximal degree in co-relation 120145. Up to 11164 conditions per place. [2023-01-28 05:37:37,871 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 275 selfloop transitions, 36 changer transitions 9/324 dead transitions. [2023-01-28 05:37:37,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 324 transitions, 2296 flow [2023-01-28 05:37:37,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 05:37:37,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 05:37:37,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1496 transitions. [2023-01-28 05:37:37,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835164835164835 [2023-01-28 05:37:37,876 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1496 transitions. [2023-01-28 05:37:37,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1496 transitions. [2023-01-28 05:37:37,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:37:37,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1496 transitions. [2023-01-28 05:37:37,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 106.85714285714286) internal successors, (1496), 14 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:37,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:37,884 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:37,885 INFO L175 Difference]: Start difference. First operand has 92 places, 70 transitions, 412 flow. Second operand 14 states and 1496 transitions. [2023-01-28 05:37:37,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 324 transitions, 2296 flow [2023-01-28 05:37:39,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 324 transitions, 2242 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-01-28 05:37:39,059 INFO L231 Difference]: Finished difference. Result has 113 places, 96 transitions, 798 flow [2023-01-28 05:37:39,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=798, PETRI_PLACES=113, PETRI_TRANSITIONS=96} [2023-01-28 05:37:39,060 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 59 predicate places. [2023-01-28 05:37:39,060 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 96 transitions, 798 flow [2023-01-28 05:37:39,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:39,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:37:39,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:37:39,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 05:37:39,061 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)] === [2023-01-28 05:37:39,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:37:39,061 INFO L85 PathProgramCache]: Analyzing trace with hash 933027707, now seen corresponding path program 8 times [2023-01-28 05:37:39,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:37:39,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844666301] [2023-01-28 05:37:39,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:37:39,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:37:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:37:40,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:37:40,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:37:40,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844666301] [2023-01-28 05:37:40,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844666301] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:37:40,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:37:40,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 05:37:40,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892135713] [2023-01-28 05:37:40,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:37:40,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 05:37:40,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:37:40,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 05:37:40,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-01-28 05:37:40,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-28 05:37:40,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 96 transitions, 798 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:40,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:37:40,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-28 05:37:40,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:37:46,639 INFO L130 PetriNetUnfolder]: 35953/56513 cut-off events. [2023-01-28 05:37:46,639 INFO L131 PetriNetUnfolder]: For 243293/243293 co-relation queries the response was YES. [2023-01-28 05:37:46,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233532 conditions, 56513 events. 35953/56513 cut-off events. For 243293/243293 co-relation queries the response was YES. Maximal size of possible extension queue 2017. Compared 441665 event pairs, 8935 based on Foata normal form. 1/56514 useless extension candidates. Maximal degree in co-relation 232967. Up to 17367 conditions per place. [2023-01-28 05:37:47,071 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 322 selfloop transitions, 61 changer transitions 9/396 dead transitions. [2023-01-28 05:37:47,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 396 transitions, 3586 flow [2023-01-28 05:37:47,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 05:37:47,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 05:37:47,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1499 transitions. [2023-01-28 05:37:47,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48448610213316096 [2023-01-28 05:37:47,075 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1499 transitions. [2023-01-28 05:37:47,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1499 transitions. [2023-01-28 05:37:47,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:37:47,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1499 transitions. [2023-01-28 05:37:47,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 107.07142857142857) internal successors, (1499), 14 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:47,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:47,081 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:47,082 INFO L175 Difference]: Start difference. First operand has 113 places, 96 transitions, 798 flow. Second operand 14 states and 1499 transitions. [2023-01-28 05:37:47,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 396 transitions, 3586 flow [2023-01-28 05:37:51,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 396 transitions, 3494 flow, removed 42 selfloop flow, removed 2 redundant places. [2023-01-28 05:37:51,164 INFO L231 Difference]: Finished difference. Result has 135 places, 143 transitions, 1629 flow [2023-01-28 05:37:51,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1629, PETRI_PLACES=135, PETRI_TRANSITIONS=143} [2023-01-28 05:37:51,165 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 81 predicate places. [2023-01-28 05:37:51,165 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 143 transitions, 1629 flow [2023-01-28 05:37:51,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:51,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:37:51,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:37:51,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 05:37:51,166 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)] === [2023-01-28 05:37:51,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:37:51,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1142875245, now seen corresponding path program 9 times [2023-01-28 05:37:51,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:37:51,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685685451] [2023-01-28 05:37:51,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:37:51,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:37:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:37:52,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:37:52,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:37:52,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685685451] [2023-01-28 05:37:52,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685685451] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:37:52,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:37:52,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 05:37:52,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806195687] [2023-01-28 05:37:52,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:37:52,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 05:37:52,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:37:52,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 05:37:52,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-01-28 05:37:52,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-28 05:37:52,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 143 transitions, 1629 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:37:52,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:37:52,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-28 05:37:52,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:38:01,886 INFO L130 PetriNetUnfolder]: 45151/72741 cut-off events. [2023-01-28 05:38:01,886 INFO L131 PetriNetUnfolder]: For 504152/504152 co-relation queries the response was YES. [2023-01-28 05:38:02,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343217 conditions, 72741 events. 45151/72741 cut-off events. For 504152/504152 co-relation queries the response was YES. Maximal size of possible extension queue 2688. Compared 612510 event pairs, 11539 based on Foata normal form. 1/72742 useless extension candidates. Maximal degree in co-relation 342215. Up to 17698 conditions per place. [2023-01-28 05:38:02,906 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 357 selfloop transitions, 85 changer transitions 10/456 dead transitions. [2023-01-28 05:38:02,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 456 transitions, 5065 flow [2023-01-28 05:38:02,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 05:38:02,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 05:38:02,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1493 transitions. [2023-01-28 05:38:02,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4825468648998061 [2023-01-28 05:38:02,913 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1493 transitions. [2023-01-28 05:38:02,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1493 transitions. [2023-01-28 05:38:02,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:38:02,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1493 transitions. [2023-01-28 05:38:02,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 106.64285714285714) internal successors, (1493), 14 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:38:02,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:38:02,940 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:38:02,940 INFO L175 Difference]: Start difference. First operand has 135 places, 143 transitions, 1629 flow. Second operand 14 states and 1493 transitions. [2023-01-28 05:38:02,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 456 transitions, 5065 flow [2023-01-28 05:38:10,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 456 transitions, 4969 flow, removed 48 selfloop flow, removed 1 redundant places. [2023-01-28 05:38:10,751 INFO L231 Difference]: Finished difference. Result has 158 places, 188 transitions, 2619 flow [2023-01-28 05:38:10,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2619, PETRI_PLACES=158, PETRI_TRANSITIONS=188} [2023-01-28 05:38:10,751 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 104 predicate places. [2023-01-28 05:38:10,751 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 188 transitions, 2619 flow [2023-01-28 05:38:10,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:38:10,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:38:10,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:38:10,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 05:38:10,752 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)] === [2023-01-28 05:38:10,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:38:10,752 INFO L85 PathProgramCache]: Analyzing trace with hash -307061275, now seen corresponding path program 10 times [2023-01-28 05:38:10,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:38:10,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685348632] [2023-01-28 05:38:10,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:38:10,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:38:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:38:11,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:38:11,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:38:11,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685348632] [2023-01-28 05:38:11,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685348632] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:38:11,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:38:11,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 05:38:11,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619349616] [2023-01-28 05:38:11,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:38:11,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 05:38:11,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:38:11,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 05:38:11,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-01-28 05:38:11,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-28 05:38:11,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 188 transitions, 2619 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:38:11,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:38:11,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-28 05:38:11,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:38:26,572 INFO L130 PetriNetUnfolder]: 63494/105675 cut-off events. [2023-01-28 05:38:26,572 INFO L131 PetriNetUnfolder]: For 1189542/1189542 co-relation queries the response was YES. [2023-01-28 05:38:27,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571337 conditions, 105675 events. 63494/105675 cut-off events. For 1189542/1189542 co-relation queries the response was YES. Maximal size of possible extension queue 4114. Compared 986921 event pairs, 18359 based on Foata normal form. 1/105668 useless extension candidates. Maximal degree in co-relation 569249. Up to 29841 conditions per place. [2023-01-28 05:38:27,916 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 545 selfloop transitions, 99 changer transitions 11/659 dead transitions. [2023-01-28 05:38:27,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 659 transitions, 9954 flow [2023-01-28 05:38:27,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 05:38:27,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 05:38:27,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1492 transitions. [2023-01-28 05:38:27,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48222365869424694 [2023-01-28 05:38:27,920 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1492 transitions. [2023-01-28 05:38:27,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1492 transitions. [2023-01-28 05:38:27,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:38:27,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1492 transitions. [2023-01-28 05:38:27,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 106.57142857142857) internal successors, (1492), 14 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:38:27,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:38:27,926 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:38:27,926 INFO L175 Difference]: Start difference. First operand has 158 places, 188 transitions, 2619 flow. Second operand 14 states and 1492 transitions. [2023-01-28 05:38:27,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 659 transitions, 9954 flow [2023-01-28 05:38:47,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 659 transitions, 9699 flow, removed 119 selfloop flow, removed 2 redundant places. [2023-01-28 05:38:47,918 INFO L231 Difference]: Finished difference. Result has 180 places, 264 transitions, 4291 flow [2023-01-28 05:38:47,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=2532, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4291, PETRI_PLACES=180, PETRI_TRANSITIONS=264} [2023-01-28 05:38:47,920 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 126 predicate places. [2023-01-28 05:38:47,920 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 264 transitions, 4291 flow [2023-01-28 05:38:47,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:38:47,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:38:47,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:38:47,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 05:38:47,921 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)] === [2023-01-28 05:38:47,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:38:47,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1994198369, now seen corresponding path program 11 times [2023-01-28 05:38:47,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:38:47,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300963912] [2023-01-28 05:38:47,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:38:47,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:38:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:38:48,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:38:48,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:38:48,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300963912] [2023-01-28 05:38:48,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300963912] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:38:48,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:38:48,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 05:38:48,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740842146] [2023-01-28 05:38:48,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:38:48,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 05:38:48,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:38:48,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 05:38:48,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-01-28 05:38:48,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-28 05:38:48,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 264 transitions, 4291 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:38:48,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:38:48,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-28 05:38:48,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:09,249 INFO L130 PetriNetUnfolder]: 75049/128442 cut-off events. [2023-01-28 05:39:09,249 INFO L131 PetriNetUnfolder]: For 1853392/1853392 co-relation queries the response was YES. [2023-01-28 05:39:10,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751359 conditions, 128442 events. 75049/128442 cut-off events. For 1853392/1853392 co-relation queries the response was YES. Maximal size of possible extension queue 5216. Compared 1274523 event pairs, 23957 based on Foata normal form. 1/128443 useless extension candidates. Maximal degree in co-relation 748393. Up to 50069 conditions per place. [2023-01-28 05:39:10,913 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 495 selfloop transitions, 133 changer transitions 9/641 dead transitions. [2023-01-28 05:39:10,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 641 transitions, 10054 flow [2023-01-28 05:39:10,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 05:39:10,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 05:39:10,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1485 transitions. [2023-01-28 05:39:10,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4799612152553329 [2023-01-28 05:39:10,917 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1485 transitions. [2023-01-28 05:39:10,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1485 transitions. [2023-01-28 05:39:10,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:10,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1485 transitions. [2023-01-28 05:39:10,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 106.07142857142857) internal successors, (1485), 14 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:10,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:10,922 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:10,922 INFO L175 Difference]: Start difference. First operand has 180 places, 264 transitions, 4291 flow. Second operand 14 states and 1485 transitions. [2023-01-28 05:39:10,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 641 transitions, 10054 flow [2023-01-28 05:39:50,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 641 transitions, 9696 flow, removed 170 selfloop flow, removed 3 redundant places. [2023-01-28 05:39:50,863 INFO L231 Difference]: Finished difference. Result has 201 places, 340 transitions, 6093 flow [2023-01-28 05:39:50,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=4189, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6093, PETRI_PLACES=201, PETRI_TRANSITIONS=340} [2023-01-28 05:39:50,863 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 147 predicate places. [2023-01-28 05:39:50,863 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 340 transitions, 6093 flow [2023-01-28 05:39:50,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:50,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:50,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:50,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 05:39:50,864 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)] === [2023-01-28 05:39:50,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:50,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1945538019, now seen corresponding path program 12 times [2023-01-28 05:39:50,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:50,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356087468] [2023-01-28 05:39:50,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:50,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:51,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:51,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:51,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356087468] [2023-01-28 05:39:51,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356087468] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:39:51,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:39:51,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 05:39:51,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047571123] [2023-01-28 05:39:51,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:39:51,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 05:39:51,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:51,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 05:39:51,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-01-28 05:39:51,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-28 05:39:51,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 340 transitions, 6093 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:51,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:51,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-28 05:39:51,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:40:24,895 INFO L130 PetriNetUnfolder]: 92388/166651 cut-off events. [2023-01-28 05:40:24,895 INFO L131 PetriNetUnfolder]: For 2878832/2878832 co-relation queries the response was YES. [2023-01-28 05:40:26,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022179 conditions, 166651 events. 92388/166651 cut-off events. For 2878832/2878832 co-relation queries the response was YES. Maximal size of possible extension queue 7261. Compared 1831828 event pairs, 25395 based on Foata normal form. 1/166652 useless extension candidates. Maximal degree in co-relation 1021916. Up to 42656 conditions per place. [2023-01-28 05:40:27,190 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 792 selfloop transitions, 96 changer transitions 12/904 dead transitions. [2023-01-28 05:40:27,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 904 transitions, 16482 flow [2023-01-28 05:40:27,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 05:40:27,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 05:40:27,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1508 transitions. [2023-01-28 05:40:27,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48739495798319327 [2023-01-28 05:40:27,209 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1508 transitions. [2023-01-28 05:40:27,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1508 transitions. [2023-01-28 05:40:27,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:40:27,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1508 transitions. [2023-01-28 05:40:27,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 107.71428571428571) internal successors, (1508), 14 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:40:27,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:40:27,215 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:40:27,215 INFO L175 Difference]: Start difference. First operand has 201 places, 340 transitions, 6093 flow. Second operand 14 states and 1508 transitions. [2023-01-28 05:40:27,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 904 transitions, 16482 flow [2023-01-28 05:41:37,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 904 transitions, 15900 flow, removed 275 selfloop flow, removed 3 redundant places. [2023-01-28 05:41:37,560 INFO L231 Difference]: Finished difference. Result has 222 places, 404 transitions, 7415 flow [2023-01-28 05:41:37,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=5858, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7415, PETRI_PLACES=222, PETRI_TRANSITIONS=404} [2023-01-28 05:41:37,561 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 168 predicate places. [2023-01-28 05:41:37,561 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 404 transitions, 7415 flow [2023-01-28 05:41:37,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:41:37,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:41:37,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:41:37,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 05:41:37,562 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)] === [2023-01-28 05:41:37,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:41:37,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1093714013, now seen corresponding path program 13 times [2023-01-28 05:41:37,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:41:37,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448241792] [2023-01-28 05:41:37,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:41:37,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:41:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:41:38,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:41:38,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:41:38,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448241792] [2023-01-28 05:41:38,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448241792] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:41:38,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:41:38,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 05:41:38,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849555413] [2023-01-28 05:41:38,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:41:38,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 05:41:38,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:41:38,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 05:41:38,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-01-28 05:41:38,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-28 05:41:38,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 404 transitions, 7415 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:41:38,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:41:38,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-28 05:41:38,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:42:23,697 INFO L130 PetriNetUnfolder]: 120145/223067 cut-off events. [2023-01-28 05:42:23,698 INFO L131 PetriNetUnfolder]: For 4253196/4253196 co-relation queries the response was YES. [2023-01-28 05:42:26,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1410412 conditions, 223067 events. 120145/223067 cut-off events. For 4253196/4253196 co-relation queries the response was YES. Maximal size of possible extension queue 10505. Compared 2619785 event pairs, 33161 based on Foata normal form. 1/223056 useless extension candidates. Maximal degree in co-relation 1402503. Up to 71014 conditions per place. [2023-01-28 05:42:27,053 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 877 selfloop transitions, 179 changer transitions 10/1070 dead transitions. [2023-01-28 05:42:27,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 1070 transitions, 20481 flow [2023-01-28 05:42:27,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 05:42:27,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 05:42:27,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1495 transitions. [2023-01-28 05:42:27,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831932773109244 [2023-01-28 05:42:27,067 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1495 transitions. [2023-01-28 05:42:27,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1495 transitions. [2023-01-28 05:42:27,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:42:27,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1495 transitions. [2023-01-28 05:42:27,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 106.78571428571429) internal successors, (1495), 14 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:42:27,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:42:27,089 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:42:27,089 INFO L175 Difference]: Start difference. First operand has 222 places, 404 transitions, 7415 flow. Second operand 14 states and 1495 transitions. [2023-01-28 05:42:27,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 1070 transitions, 20481 flow [2023-01-28 05:45:25,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 1070 transitions, 20214 flow, removed 121 selfloop flow, removed 3 redundant places. [2023-01-28 05:45:25,640 INFO L231 Difference]: Finished difference. Result has 243 places, 504 transitions, 10182 flow [2023-01-28 05:45:25,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=7295, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=10182, PETRI_PLACES=243, PETRI_TRANSITIONS=504} [2023-01-28 05:45:25,641 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 189 predicate places. [2023-01-28 05:45:25,641 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 504 transitions, 10182 flow [2023-01-28 05:45:25,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:45:25,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:45:25,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:45:25,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 05:45:25,641 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)] === [2023-01-28 05:45:25,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:45:25,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1918120765, now seen corresponding path program 14 times [2023-01-28 05:45:25,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:45:25,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786194205] [2023-01-28 05:45:25,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:45:25,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:45:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:45:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:45:26,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:45:26,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786194205] [2023-01-28 05:45:26,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786194205] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:45:26,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:45:26,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 05:45:26,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587865682] [2023-01-28 05:45:26,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:45:26,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 05:45:26,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:45:26,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 05:45:26,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-01-28 05:45:26,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-28 05:45:26,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 504 transitions, 10182 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:45:26,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:45:26,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-28 05:45:26,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand