/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/queue.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 18:46:15,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 18:46:15,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 18:46:15,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 18:46:15,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 18:46:15,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 18:46:15,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 18:46:15,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 18:46:15,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 18:46:15,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 18:46:15,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 18:46:15,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 18:46:15,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 18:46:15,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 18:46:15,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 18:46:15,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 18:46:15,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 18:46:15,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 18:46:15,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 18:46:15,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 18:46:15,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 18:46:15,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 18:46:15,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 18:46:15,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 18:46:15,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 18:46:15,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 18:46:15,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 18:46:15,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 18:46:15,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 18:46:15,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 18:46:15,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 18:46:15,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 18:46:15,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 18:46:15,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 18:46:15,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 18:46:15,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 18:46:15,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 18:46:15,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 18:46:15,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 18:46:15,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 18:46:15,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 18:46:15,459 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-NoLbe.epf [2022-12-11 18:46:15,482 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 18:46:15,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 18:46:15,484 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 18:46:15,484 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 18:46:15,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 18:46:15,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 18:46:15,485 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 18:46:15,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 18:46:15,485 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 18:46:15,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 18:46:15,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 18:46:15,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 18:46:15,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 18:46:15,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 18:46:15,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 18:46:15,487 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 18:46:15,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 18:46:15,487 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 18:46:15,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 18:46:15,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 18:46:15,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 18:46:15,487 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 18:46:15,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 18:46:15,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 18:46:15,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 18:46:15,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 18:46:15,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 18:46:15,488 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 18:46:15,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 18:46:15,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 18:46:15,488 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 18:46:15,488 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-11 18:46:15,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 18:46:15,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 18:46:15,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 18:46:15,748 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 18:46:15,749 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 18:46:15,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue.i [2022-12-11 18:46:16,717 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 18:46:16,998 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 18:46:16,999 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i [2022-12-11 18:46:17,010 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f984ff4d/db8f72b438394791b519a2323350cbbe/FLAG049aaf73f [2022-12-11 18:46:17,020 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f984ff4d/db8f72b438394791b519a2323350cbbe [2022-12-11 18:46:17,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 18:46:17,023 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 18:46:17,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 18:46:17,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 18:46:17,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 18:46:17,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 06:46:17" (1/1) ... [2022-12-11 18:46:17,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3938800a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:46:17, skipping insertion in model container [2022-12-11 18:46:17,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 06:46:17" (1/1) ... [2022-12-11 18:46:17,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 18:46:17,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 18:46:17,358 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43284,43297] [2022-12-11 18:46:17,365 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43491,43504] [2022-12-11 18:46:17,369 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43772,43785] [2022-12-11 18:46:17,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 18:46:17,383 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 18:46:17,428 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43284,43297] [2022-12-11 18:46:17,429 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43491,43504] [2022-12-11 18:46:17,430 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43772,43785] [2022-12-11 18:46:17,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 18:46:17,472 INFO L208 MainTranslator]: Completed translation [2022-12-11 18:46:17,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:46:17 WrapperNode [2022-12-11 18:46:17,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 18:46:17,473 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 18:46:17,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 18:46:17,474 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 18:46:17,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:46:17" (1/1) ... [2022-12-11 18:46:17,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:46:17" (1/1) ... [2022-12-11 18:46:17,520 INFO L138 Inliner]: procedures = 274, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 250 [2022-12-11 18:46:17,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 18:46:17,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 18:46:17,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 18:46:17,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 18:46:17,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:46:17" (1/1) ... [2022-12-11 18:46:17,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:46:17" (1/1) ... [2022-12-11 18:46:17,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:46:17" (1/1) ... [2022-12-11 18:46:17,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:46:17" (1/1) ... [2022-12-11 18:46:17,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:46:17" (1/1) ... [2022-12-11 18:46:17,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:46:17" (1/1) ... [2022-12-11 18:46:17,554 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:46:17" (1/1) ... [2022-12-11 18:46:17,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:46:17" (1/1) ... [2022-12-11 18:46:17,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 18:46:17,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 18:46:17,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 18:46:17,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 18:46:17,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:46:17" (1/1) ... [2022-12-11 18:46:17,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 18:46:17,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:46:17,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-11 18:46:17,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-11 18:46:17,649 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-11 18:46:17,649 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-11 18:46:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-11 18:46:17,653 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-11 18:46:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 18:46:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 18:46:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 18:46:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 18:46:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-11 18:46:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 18:46:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 18:46:17,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 18:46:17,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 18:46:17,661 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 18:46:17,764 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 18:46:17,766 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 18:46:18,120 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 18:46:18,126 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 18:46:18,127 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-11 18:46:18,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 06:46:18 BoogieIcfgContainer [2022-12-11 18:46:18,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 18:46:18,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 18:46:18,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 18:46:18,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 18:46:18,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 06:46:17" (1/3) ... [2022-12-11 18:46:18,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6882ea3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 06:46:18, skipping insertion in model container [2022-12-11 18:46:18,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:46:17" (2/3) ... [2022-12-11 18:46:18,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6882ea3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 06:46:18, skipping insertion in model container [2022-12-11 18:46:18,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 06:46:18" (3/3) ... [2022-12-11 18:46:18,133 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2022-12-11 18:46:18,145 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 18:46:18,145 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-11 18:46:18,145 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 18:46:18,240 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-11 18:46:18,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 264 transitions, 544 flow [2022-12-11 18:46:18,367 INFO L130 PetriNetUnfolder]: 15/262 cut-off events. [2022-12-11 18:46:18,367 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 18:46:18,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 262 events. 15/262 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 362 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 191. Up to 2 conditions per place. [2022-12-11 18:46:18,375 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 264 transitions, 544 flow [2022-12-11 18:46:18,381 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 253 transitions, 515 flow [2022-12-11 18:46:18,391 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 18:46:18,397 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;@2b37d55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 18:46:18,397 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-11 18:46:18,413 INFO L130 PetriNetUnfolder]: 1/64 cut-off events. [2022-12-11 18:46:18,413 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 18:46:18,413 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:46:18,414 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:46:18,414 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 4 more)] === [2022-12-11 18:46:18,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:46:18,420 INFO L85 PathProgramCache]: Analyzing trace with hash -2141951542, now seen corresponding path program 1 times [2022-12-11 18:46:18,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:46:18,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866197421] [2022-12-11 18:46:18,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:46:18,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:46:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:46:18,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:46:18,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:46:18,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866197421] [2022-12-11 18:46:18,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866197421] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:46:18,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:46:18,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-11 18:46:18,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30108671] [2022-12-11 18:46:18,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:46:18,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-11 18:46:18,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:46:18,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-11 18:46:18,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-11 18:46:18,692 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 264 [2022-12-11 18:46:18,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 253 transitions, 515 flow. Second operand has 2 states, 2 states have (on average 251.5) internal successors, (503), 2 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:46:18,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:46:18,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 264 [2022-12-11 18:46:18,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:46:18,753 INFO L130 PetriNetUnfolder]: 10/242 cut-off events. [2022-12-11 18:46:18,753 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-12-11 18:46:18,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 242 events. 10/242 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 281 event pairs, 0 based on Foata normal form. 7/237 useless extension candidates. Maximal degree in co-relation 184. Up to 4 conditions per place. [2022-12-11 18:46:18,759 INFO L137 encePairwiseOnDemand]: 259/264 looper letters, 3 selfloop transitions, 0 changer transitions 0/242 dead transitions. [2022-12-11 18:46:18,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 242 transitions, 499 flow [2022-12-11 18:46:18,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-11 18:46:18,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-11 18:46:18,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 510 transitions. [2022-12-11 18:46:18,773 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9659090909090909 [2022-12-11 18:46:18,774 INFO L175 Difference]: Start difference. First operand has 245 places, 253 transitions, 515 flow. Second operand 2 states and 510 transitions. [2022-12-11 18:46:18,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 242 transitions, 499 flow [2022-12-11 18:46:18,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 242 transitions, 494 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-11 18:46:18,781 INFO L231 Difference]: Finished difference. Result has 237 places, 242 transitions, 488 flow [2022-12-11 18:46:18,782 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=488, PETRI_PLACES=237, PETRI_TRANSITIONS=242} [2022-12-11 18:46:18,787 INFO L295 CegarLoopForPetriNet]: 245 programPoint places, -8 predicate places. [2022-12-11 18:46:18,787 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 242 transitions, 488 flow [2022-12-11 18:46:18,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 251.5) internal successors, (503), 2 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:46:18,788 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:46:18,788 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:46:18,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 18:46:18,789 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:46:18,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:46:18,790 INFO L85 PathProgramCache]: Analyzing trace with hash -257831115, now seen corresponding path program 1 times [2022-12-11 18:46:18,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:46:18,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819360642] [2022-12-11 18:46:18,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:46:18,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:46:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:46:19,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:46:19,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:46:19,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819360642] [2022-12-11 18:46:19,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819360642] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:46:19,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:46:19,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-11 18:46:19,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481440639] [2022-12-11 18:46:19,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:46:19,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-11 18:46:19,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:46:19,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-11 18:46:19,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-12-11 18:46:19,516 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 264 [2022-12-11 18:46:19,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 242 transitions, 488 flow. Second operand has 12 states, 12 states have (on average 182.41666666666666) internal successors, (2189), 12 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:46:19,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:46:19,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 264 [2022-12-11 18:46:19,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:46:20,301 INFO L130 PetriNetUnfolder]: 995/3875 cut-off events. [2022-12-11 18:46:20,302 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-12-11 18:46:20,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5394 conditions, 3875 events. 995/3875 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 31430 event pairs, 789 based on Foata normal form. 0/3604 useless extension candidates. Maximal degree in co-relation 5391. Up to 1435 conditions per place. [2022-12-11 18:46:20,317 INFO L137 encePairwiseOnDemand]: 251/264 looper letters, 60 selfloop transitions, 12 changer transitions 0/238 dead transitions. [2022-12-11 18:46:20,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 238 transitions, 624 flow [2022-12-11 18:46:20,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-11 18:46:20,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-11 18:46:20,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2400 transitions. [2022-12-11 18:46:20,329 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6993006993006993 [2022-12-11 18:46:20,329 INFO L175 Difference]: Start difference. First operand has 237 places, 242 transitions, 488 flow. Second operand 13 states and 2400 transitions. [2022-12-11 18:46:20,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 238 transitions, 624 flow [2022-12-11 18:46:20,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 238 transitions, 624 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-11 18:46:20,337 INFO L231 Difference]: Finished difference. Result has 246 places, 238 transitions, 504 flow [2022-12-11 18:46:20,337 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=504, PETRI_PLACES=246, PETRI_TRANSITIONS=238} [2022-12-11 18:46:20,338 INFO L295 CegarLoopForPetriNet]: 245 programPoint places, 1 predicate places. [2022-12-11 18:46:20,338 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 238 transitions, 504 flow [2022-12-11 18:46:20,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 182.41666666666666) internal successors, (2189), 12 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:46:20,339 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:46:20,339 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:46:20,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 18:46:20,339 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:46:20,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:46:20,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1616218164, now seen corresponding path program 1 times [2022-12-11 18:46:20,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:46:20,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003835394] [2022-12-11 18:46:20,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:46:20,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:46:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:46:20,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:46:20,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:46:20,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003835394] [2022-12-11 18:46:20,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003835394] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:46:20,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:46:20,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 18:46:20,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521549171] [2022-12-11 18:46:20,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:46:20,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 18:46:20,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:46:20,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 18:46:20,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 18:46:20,425 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 264 [2022-12-11 18:46:20,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 238 transitions, 504 flow. Second operand has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:46:20,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:46:20,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 264 [2022-12-11 18:46:20,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:46:20,473 INFO L130 PetriNetUnfolder]: 26/414 cut-off events. [2022-12-11 18:46:20,473 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-11 18:46:20,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 414 events. 26/414 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1045 event pairs, 2 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 477. Up to 13 conditions per place. [2022-12-11 18:46:20,475 INFO L137 encePairwiseOnDemand]: 258/264 looper letters, 9 selfloop transitions, 5 changer transitions 0/238 dead transitions. [2022-12-11 18:46:20,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 238 transitions, 536 flow [2022-12-11 18:46:20,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-11 18:46:20,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-11 18:46:20,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 975 transitions. [2022-12-11 18:46:20,477 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9232954545454546 [2022-12-11 18:46:20,477 INFO L175 Difference]: Start difference. First operand has 246 places, 238 transitions, 504 flow. Second operand 4 states and 975 transitions. [2022-12-11 18:46:20,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 238 transitions, 536 flow [2022-12-11 18:46:20,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 238 transitions, 513 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-12-11 18:46:20,480 INFO L231 Difference]: Finished difference. Result has 237 places, 236 transitions, 487 flow [2022-12-11 18:46:20,481 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=487, PETRI_PLACES=237, PETRI_TRANSITIONS=236} [2022-12-11 18:46:20,482 INFO L295 CegarLoopForPetriNet]: 245 programPoint places, -8 predicate places. [2022-12-11 18:46:20,482 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 236 transitions, 487 flow [2022-12-11 18:46:20,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:46:20,482 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:46:20,483 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:46:20,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 18:46:20,483 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:46:20,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:46:20,484 INFO L85 PathProgramCache]: Analyzing trace with hash -751670610, now seen corresponding path program 1 times [2022-12-11 18:46:20,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:46:20,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889768524] [2022-12-11 18:46:20,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:46:20,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:46:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:46:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:46:20,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:46:20,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889768524] [2022-12-11 18:46:20,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889768524] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:46:20,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:46:20,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 18:46:20,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562705719] [2022-12-11 18:46:20,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:46:20,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 18:46:20,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:46:20,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 18:46:20,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 18:46:20,558 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 264 [2022-12-11 18:46:20,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 236 transitions, 487 flow. Second operand has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:46:20,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:46:20,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 264 [2022-12-11 18:46:20,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:46:20,640 INFO L130 PetriNetUnfolder]: 33/508 cut-off events. [2022-12-11 18:46:20,640 INFO L131 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2022-12-11 18:46:20,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 567 conditions, 508 events. 33/508 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1229 event pairs, 2 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 563. Up to 23 conditions per place. [2022-12-11 18:46:20,642 INFO L137 encePairwiseOnDemand]: 260/264 looper letters, 10 selfloop transitions, 3 changer transitions 0/240 dead transitions. [2022-12-11 18:46:20,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 240 transitions, 524 flow [2022-12-11 18:46:20,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 18:46:20,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 18:46:20,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 749 transitions. [2022-12-11 18:46:20,644 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9457070707070707 [2022-12-11 18:46:20,644 INFO L175 Difference]: Start difference. First operand has 237 places, 236 transitions, 487 flow. Second operand 3 states and 749 transitions. [2022-12-11 18:46:20,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 240 transitions, 524 flow [2022-12-11 18:46:20,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 240 transitions, 514 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-11 18:46:20,647 INFO L231 Difference]: Finished difference. Result has 237 places, 237 transitions, 492 flow [2022-12-11 18:46:20,648 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=237, PETRI_TRANSITIONS=237} [2022-12-11 18:46:20,648 INFO L295 CegarLoopForPetriNet]: 245 programPoint places, -8 predicate places. [2022-12-11 18:46:20,648 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 237 transitions, 492 flow [2022-12-11 18:46:20,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:46:20,649 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:46:20,649 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:46:20,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 18:46:20,649 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:46:20,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:46:20,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1079047797, now seen corresponding path program 1 times [2022-12-11 18:46:20,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:46:20,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876699541] [2022-12-11 18:46:20,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:46:20,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:46:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:46:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:46:20,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:46:20,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876699541] [2022-12-11 18:46:20,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876699541] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:46:20,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:46:20,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 18:46:20,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194176551] [2022-12-11 18:46:20,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:46:20,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 18:46:20,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:46:20,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 18:46:20,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 18:46:20,704 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 264 [2022-12-11 18:46:20,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 237 transitions, 492 flow. Second operand has 4 states, 4 states have (on average 243.75) internal successors, (975), 4 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:46:20,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:46:20,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 264 [2022-12-11 18:46:20,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:46:20,799 INFO L130 PetriNetUnfolder]: 51/804 cut-off events. [2022-12-11 18:46:20,799 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-11 18:46:20,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 804 events. 51/804 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2926 event pairs, 7 based on Foata normal form. 0/756 useless extension candidates. Maximal degree in co-relation 908. Up to 27 conditions per place. [2022-12-11 18:46:20,805 INFO L137 encePairwiseOnDemand]: 259/264 looper letters, 15 selfloop transitions, 5 changer transitions 0/245 dead transitions. [2022-12-11 18:46:20,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 245 transitions, 555 flow [2022-12-11 18:46:20,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 18:46:20,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 18:46:20,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1231 transitions. [2022-12-11 18:46:20,807 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9325757575757576 [2022-12-11 18:46:20,807 INFO L175 Difference]: Start difference. First operand has 237 places, 237 transitions, 492 flow. Second operand 5 states and 1231 transitions. [2022-12-11 18:46:20,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 245 transitions, 555 flow [2022-12-11 18:46:20,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 245 transitions, 552 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 18:46:20,811 INFO L231 Difference]: Finished difference. Result has 243 places, 240 transitions, 519 flow [2022-12-11 18:46:20,811 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=519, PETRI_PLACES=243, PETRI_TRANSITIONS=240} [2022-12-11 18:46:20,812 INFO L295 CegarLoopForPetriNet]: 245 programPoint places, -2 predicate places. [2022-12-11 18:46:20,812 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 240 transitions, 519 flow [2022-12-11 18:46:20,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 243.75) internal successors, (975), 4 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:46:20,813 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:46:20,813 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:46:20,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 18:46:20,813 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:46:20,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:46:20,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1565185720, now seen corresponding path program 1 times [2022-12-11 18:46:20,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:46:20,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384245902] [2022-12-11 18:46:20,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:46:20,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:46:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:46:21,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:46:21,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:46:21,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384245902] [2022-12-11 18:46:21,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384245902] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:46:21,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:46:21,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 18:46:21,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890410380] [2022-12-11 18:46:21,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:46:21,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 18:46:21,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:46:21,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 18:46:21,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-12-11 18:46:21,691 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 264 [2022-12-11 18:46:21,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 240 transitions, 519 flow. Second operand has 16 states, 16 states have (on average 162.5) internal successors, (2600), 16 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:46:21,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:46:21,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 264 [2022-12-11 18:46:21,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:46:23,001 INFO L130 PetriNetUnfolder]: 1599/6531 cut-off events. [2022-12-11 18:46:23,001 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-12-11 18:46:23,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9500 conditions, 6531 events. 1599/6531 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 57029 event pairs, 1290 based on Foata normal form. 0/6180 useless extension candidates. Maximal degree in co-relation 9493. Up to 2556 conditions per place. [2022-12-11 18:46:23,030 INFO L137 encePairwiseOnDemand]: 246/264 looper letters, 92 selfloop transitions, 22 changer transitions 0/262 dead transitions. [2022-12-11 18:46:23,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 262 transitions, 793 flow [2022-12-11 18:46:23,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-11 18:46:23,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-11 18:46:23,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2660 transitions. [2022-12-11 18:46:23,035 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6297348484848485 [2022-12-11 18:46:23,035 INFO L175 Difference]: Start difference. First operand has 243 places, 240 transitions, 519 flow. Second operand 16 states and 2660 transitions. [2022-12-11 18:46:23,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 262 transitions, 793 flow [2022-12-11 18:46:23,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 262 transitions, 793 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-11 18:46:23,039 INFO L231 Difference]: Finished difference. Result has 264 places, 253 transitions, 632 flow [2022-12-11 18:46:23,039 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=632, PETRI_PLACES=264, PETRI_TRANSITIONS=253} [2022-12-11 18:46:23,040 INFO L295 CegarLoopForPetriNet]: 245 programPoint places, 19 predicate places. [2022-12-11 18:46:23,040 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 253 transitions, 632 flow [2022-12-11 18:46:23,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 162.5) internal successors, (2600), 16 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:46:23,041 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:46:23,041 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:46:23,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-11 18:46:23,042 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:46:23,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:46:23,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1724284974, now seen corresponding path program 1 times [2022-12-11 18:46:23,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:46:23,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868552604] [2022-12-11 18:46:23,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:46:23,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:46:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:46:24,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:46:24,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:46:24,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868552604] [2022-12-11 18:46:24,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868552604] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:46:24,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:46:24,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-12-11 18:46:24,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552031854] [2022-12-11 18:46:24,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:46:24,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-11 18:46:24,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:46:24,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-11 18:46:24,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-12-11 18:46:24,648 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 264 [2022-12-11 18:46:24,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 253 transitions, 632 flow. Second operand has 27 states, 27 states have (on average 148.4814814814815) internal successors, (4009), 27 states have internal predecessors, (4009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:46:24,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:46:24,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 264 [2022-12-11 18:46:24,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:46:26,870 INFO L130 PetriNetUnfolder]: 1457/5904 cut-off events. [2022-12-11 18:46:26,870 INFO L131 PetriNetUnfolder]: For 116/119 co-relation queries the response was YES. [2022-12-11 18:46:26,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8759 conditions, 5904 events. 1457/5904 cut-off events. For 116/119 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 50292 event pairs, 1160 based on Foata normal form. 2/5629 useless extension candidates. Maximal degree in co-relation 8745. Up to 2311 conditions per place. [2022-12-11 18:46:26,905 INFO L137 encePairwiseOnDemand]: 234/264 looper letters, 104 selfloop transitions, 43 changer transitions 0/287 dead transitions. [2022-12-11 18:46:26,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 287 transitions, 1016 flow [2022-12-11 18:46:26,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-11 18:46:26,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-11 18:46:26,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4090 transitions. [2022-12-11 18:46:26,912 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5737934904601572 [2022-12-11 18:46:26,912 INFO L175 Difference]: Start difference. First operand has 264 places, 253 transitions, 632 flow. Second operand 27 states and 4090 transitions. [2022-12-11 18:46:26,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 287 transitions, 1016 flow [2022-12-11 18:46:26,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 287 transitions, 1001 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-11 18:46:26,917 INFO L231 Difference]: Finished difference. Result has 293 places, 273 transitions, 840 flow [2022-12-11 18:46:26,917 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=840, PETRI_PLACES=293, PETRI_TRANSITIONS=273} [2022-12-11 18:46:26,918 INFO L295 CegarLoopForPetriNet]: 245 programPoint places, 48 predicate places. [2022-12-11 18:46:26,918 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 273 transitions, 840 flow [2022-12-11 18:46:26,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 148.4814814814815) internal successors, (4009), 27 states have internal predecessors, (4009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:46:26,919 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:46:26,919 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:46:26,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-11 18:46:26,920 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:46:26,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:46:26,920 INFO L85 PathProgramCache]: Analyzing trace with hash 42186094, now seen corresponding path program 1 times [2022-12-11 18:46:26,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:46:26,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577420521] [2022-12-11 18:46:26,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:46:26,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:46:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:46:29,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:46:29,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:46:29,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577420521] [2022-12-11 18:46:29,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577420521] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:46:29,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:46:29,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-11 18:46:29,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025342100] [2022-12-11 18:46:29,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:46:29,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-11 18:46:29,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:46:29,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-11 18:46:29,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-12-11 18:46:29,537 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 264 [2022-12-11 18:46:29,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 273 transitions, 840 flow. Second operand has 20 states, 20 states have (on average 160.85) internal successors, (3217), 20 states have internal predecessors, (3217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:46:29,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:46:29,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 264 [2022-12-11 18:46:29,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:46:31,800 INFO L130 PetriNetUnfolder]: 1598/6542 cut-off events. [2022-12-11 18:46:31,800 INFO L131 PetriNetUnfolder]: For 373/377 co-relation queries the response was YES. [2022-12-11 18:46:31,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9934 conditions, 6542 events. 1598/6542 cut-off events. For 373/377 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 57243 event pairs, 728 based on Foata normal form. 3/6204 useless extension candidates. Maximal degree in co-relation 9909. Up to 2472 conditions per place. [2022-12-11 18:46:31,845 INFO L137 encePairwiseOnDemand]: 242/264 looper letters, 119 selfloop transitions, 39 changer transitions 0/312 dead transitions. [2022-12-11 18:46:31,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 312 transitions, 1290 flow [2022-12-11 18:46:31,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-11 18:46:31,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-11 18:46:31,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3456 transitions. [2022-12-11 18:46:31,852 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6233766233766234 [2022-12-11 18:46:31,852 INFO L175 Difference]: Start difference. First operand has 293 places, 273 transitions, 840 flow. Second operand 21 states and 3456 transitions. [2022-12-11 18:46:31,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 312 transitions, 1290 flow [2022-12-11 18:46:31,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 312 transitions, 1248 flow, removed 7 selfloop flow, removed 13 redundant places. [2022-12-11 18:46:31,863 INFO L231 Difference]: Finished difference. Result has 305 places, 285 transitions, 977 flow [2022-12-11 18:46:31,863 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=977, PETRI_PLACES=305, PETRI_TRANSITIONS=285} [2022-12-11 18:46:31,865 INFO L295 CegarLoopForPetriNet]: 245 programPoint places, 60 predicate places. [2022-12-11 18:46:31,865 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 285 transitions, 977 flow [2022-12-11 18:46:31,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 160.85) internal successors, (3217), 20 states have internal predecessors, (3217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:46:31,866 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:46:31,866 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:46:31,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-11 18:46:31,866 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:46:31,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:46:31,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1623851662, now seen corresponding path program 2 times [2022-12-11 18:46:31,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:46:31,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922427051] [2022-12-11 18:46:31,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:46:31,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:46:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:46:34,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:46:34,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:46:34,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922427051] [2022-12-11 18:46:34,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922427051] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:46:34,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:46:34,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-11 18:46:34,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623889596] [2022-12-11 18:46:34,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:46:34,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-11 18:46:34,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:46:34,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-11 18:46:34,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-12-11 18:46:34,326 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 264 [2022-12-11 18:46:34,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 285 transitions, 977 flow. Second operand has 21 states, 21 states have (on average 160.71428571428572) internal successors, (3375), 21 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:46:34,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:46:34,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 264 [2022-12-11 18:46:34,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:46:37,032 INFO L130 PetriNetUnfolder]: 1620/6633 cut-off events. [2022-12-11 18:46:37,032 INFO L131 PetriNetUnfolder]: For 548/552 co-relation queries the response was YES. [2022-12-11 18:46:37,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10247 conditions, 6633 events. 1620/6633 cut-off events. For 548/552 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 57993 event pairs, 725 based on Foata normal form. 3/6295 useless extension candidates. Maximal degree in co-relation 10217. Up to 2475 conditions per place. [2022-12-11 18:46:37,076 INFO L137 encePairwiseOnDemand]: 243/264 looper letters, 119 selfloop transitions, 45 changer transitions 0/318 dead transitions. [2022-12-11 18:46:37,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 318 transitions, 1421 flow [2022-12-11 18:46:37,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-11 18:46:37,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-11 18:46:37,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3454 transitions. [2022-12-11 18:46:37,081 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.623015873015873 [2022-12-11 18:46:37,081 INFO L175 Difference]: Start difference. First operand has 305 places, 285 transitions, 977 flow. Second operand 21 states and 3454 transitions. [2022-12-11 18:46:37,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 318 transitions, 1421 flow [2022-12-11 18:46:37,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 318 transitions, 1395 flow, removed 2 selfloop flow, removed 11 redundant places. [2022-12-11 18:46:37,088 INFO L231 Difference]: Finished difference. Result has 319 places, 292 transitions, 1133 flow [2022-12-11 18:46:37,088 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1133, PETRI_PLACES=319, PETRI_TRANSITIONS=292} [2022-12-11 18:46:37,088 INFO L295 CegarLoopForPetriNet]: 245 programPoint places, 74 predicate places. [2022-12-11 18:46:37,089 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 292 transitions, 1133 flow [2022-12-11 18:46:37,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 160.71428571428572) internal successors, (3375), 21 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:46:37,090 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:46:37,090 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:46:37,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-11 18:46:37,090 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:46:37,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:46:37,090 INFO L85 PathProgramCache]: Analyzing trace with hash -555734342, now seen corresponding path program 3 times [2022-12-11 18:46:37,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:46:37,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036914525] [2022-12-11 18:46:37,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:46:37,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:46:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:46:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:46:39,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:46:39,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036914525] [2022-12-11 18:46:39,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036914525] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:46:39,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:46:39,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-11 18:46:39,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30490871] [2022-12-11 18:46:39,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:46:39,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-11 18:46:39,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:46:39,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-11 18:46:39,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-12-11 18:46:39,066 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 264 [2022-12-11 18:46:39,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 292 transitions, 1133 flow. Second operand has 21 states, 21 states have (on average 160.71428571428572) internal successors, (3375), 21 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:46:39,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:46:39,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 264 [2022-12-11 18:46:39,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:46:41,686 INFO L130 PetriNetUnfolder]: 1611/6618 cut-off events. [2022-12-11 18:46:41,687 INFO L131 PetriNetUnfolder]: For 879/883 co-relation queries the response was YES. [2022-12-11 18:46:41,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10353 conditions, 6618 events. 1611/6618 cut-off events. For 879/883 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 58149 event pairs, 729 based on Foata normal form. 3/6280 useless extension candidates. Maximal degree in co-relation 10319. Up to 2410 conditions per place. [2022-12-11 18:46:41,734 INFO L137 encePairwiseOnDemand]: 244/264 looper letters, 108 selfloop transitions, 43 changer transitions 0/305 dead transitions. [2022-12-11 18:46:41,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 305 transitions, 1471 flow [2022-12-11 18:46:41,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-11 18:46:41,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-11 18:46:41,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3116 transitions. [2022-12-11 18:46:41,858 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2022-12-11 18:46:41,858 INFO L175 Difference]: Start difference. First operand has 319 places, 292 transitions, 1133 flow. Second operand 19 states and 3116 transitions. [2022-12-11 18:46:41,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 305 transitions, 1471 flow [2022-12-11 18:46:41,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 305 transitions, 1423 flow, removed 5 selfloop flow, removed 14 redundant places. [2022-12-11 18:46:41,866 INFO L231 Difference]: Finished difference. Result has 321 places, 289 transitions, 1159 flow [2022-12-11 18:46:41,867 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1159, PETRI_PLACES=321, PETRI_TRANSITIONS=289} [2022-12-11 18:46:41,868 INFO L295 CegarLoopForPetriNet]: 245 programPoint places, 76 predicate places. [2022-12-11 18:46:41,868 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 289 transitions, 1159 flow [2022-12-11 18:46:41,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 160.71428571428572) internal successors, (3375), 21 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:46:41,869 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:46:41,869 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:46:41,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-11 18:46:41,869 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:46:41,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:46:41,870 INFO L85 PathProgramCache]: Analyzing trace with hash -427390636, now seen corresponding path program 1 times [2022-12-11 18:46:41,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:46:41,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562160480] [2022-12-11 18:46:41,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:46:41,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:46:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:46:45,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:46:45,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:46:45,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562160480] [2022-12-11 18:46:45,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562160480] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:46:45,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:46:45,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-12-11 18:46:45,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815489289] [2022-12-11 18:46:45,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:46:45,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-11 18:46:45,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:46:45,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-11 18:46:45,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-12-11 18:46:45,902 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 264 [2022-12-11 18:46:45,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 289 transitions, 1159 flow. Second operand has 31 states, 31 states have (on average 147.19354838709677) internal successors, (4563), 31 states have internal predecessors, (4563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:46:45,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:46:45,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 264 [2022-12-11 18:46:45,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:46:51,057 INFO L130 PetriNetUnfolder]: 1550/6354 cut-off events. [2022-12-11 18:46:51,057 INFO L131 PetriNetUnfolder]: For 1042/1045 co-relation queries the response was YES. [2022-12-11 18:46:51,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10175 conditions, 6354 events. 1550/6354 cut-off events. For 1042/1045 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 54333 event pairs, 923 based on Foata normal form. 3/6071 useless extension candidates. Maximal degree in co-relation 10142. Up to 2266 conditions per place. [2022-12-11 18:46:51,101 INFO L137 encePairwiseOnDemand]: 230/264 looper letters, 135 selfloop transitions, 71 changer transitions 0/346 dead transitions. [2022-12-11 18:46:51,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 346 transitions, 1760 flow [2022-12-11 18:46:51,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-11 18:46:51,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-11 18:46:51,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4670 transitions. [2022-12-11 18:46:51,106 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5706256109481916 [2022-12-11 18:46:51,106 INFO L175 Difference]: Start difference. First operand has 321 places, 289 transitions, 1159 flow. Second operand 31 states and 4670 transitions. [2022-12-11 18:46:51,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 346 transitions, 1760 flow [2022-12-11 18:46:51,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 346 transitions, 1670 flow, removed 0 selfloop flow, removed 18 redundant places. [2022-12-11 18:46:51,114 INFO L231 Difference]: Finished difference. Result has 344 places, 301 transitions, 1370 flow [2022-12-11 18:46:51,114 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1370, PETRI_PLACES=344, PETRI_TRANSITIONS=301} [2022-12-11 18:46:51,114 INFO L295 CegarLoopForPetriNet]: 245 programPoint places, 99 predicate places. [2022-12-11 18:46:51,115 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 301 transitions, 1370 flow [2022-12-11 18:46:51,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 147.19354838709677) internal successors, (4563), 31 states have internal predecessors, (4563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:46:51,116 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:46:51,116 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:46:51,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-11 18:46:51,116 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:46:51,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:46:51,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1489482958, now seen corresponding path program 2 times [2022-12-11 18:46:51,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:46:51,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087210090] [2022-12-11 18:46:51,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:46:51,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:46:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:47:09,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:47:09,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:47:09,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087210090] [2022-12-11 18:47:09,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087210090] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:47:09,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:47:09,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-12-11 18:47:09,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364453431] [2022-12-11 18:47:09,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:47:09,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-11 18:47:09,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:47:09,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-11 18:47:09,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2022-12-11 18:47:09,129 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 264 [2022-12-11 18:47:09,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 301 transitions, 1370 flow. Second operand has 32 states, 32 states have (on average 147.125) internal successors, (4708), 32 states have internal predecessors, (4708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:47:09,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:47:09,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 264 [2022-12-11 18:47:09,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:47:28,580 WARN L233 SmtUtils]: Spent 7.09s on a formula simplification. DAG size of input: 128 DAG size of output: 126 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:47:42,376 WARN L233 SmtUtils]: Spent 8.03s on a formula simplification. DAG size of input: 139 DAG size of output: 137 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:47:52,202 WARN L233 SmtUtils]: Spent 8.19s on a formula simplification. DAG size of input: 142 DAG size of output: 140 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:48:07,416 WARN L233 SmtUtils]: Spent 8.07s on a formula simplification. DAG size of input: 145 DAG size of output: 143 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:48:26,078 INFO L130 PetriNetUnfolder]: 1587/6559 cut-off events. [2022-12-11 18:48:26,078 INFO L131 PetriNetUnfolder]: For 1413/1416 co-relation queries the response was YES. [2022-12-11 18:48:26,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10821 conditions, 6559 events. 1587/6559 cut-off events. For 1413/1416 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 56089 event pairs, 915 based on Foata normal form. 3/6268 useless extension candidates. Maximal degree in co-relation 10777. Up to 2240 conditions per place. [2022-12-11 18:48:26,127 INFO L137 encePairwiseOnDemand]: 233/264 looper letters, 140 selfloop transitions, 68 changer transitions 0/348 dead transitions. [2022-12-11 18:48:26,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 348 transitions, 1953 flow [2022-12-11 18:48:26,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-11 18:48:26,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-11 18:48:26,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4222 transitions. [2022-12-11 18:48:26,255 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5711580086580087 [2022-12-11 18:48:26,255 INFO L175 Difference]: Start difference. First operand has 344 places, 301 transitions, 1370 flow. Second operand 28 states and 4222 transitions. [2022-12-11 18:48:26,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 348 transitions, 1953 flow [2022-12-11 18:48:26,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 348 transitions, 1856 flow, removed 16 selfloop flow, removed 19 redundant places. [2022-12-11 18:48:26,274 INFO L231 Difference]: Finished difference. Result has 358 places, 308 transitions, 1533 flow [2022-12-11 18:48:26,274 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1533, PETRI_PLACES=358, PETRI_TRANSITIONS=308} [2022-12-11 18:48:26,275 INFO L295 CegarLoopForPetriNet]: 245 programPoint places, 113 predicate places. [2022-12-11 18:48:26,275 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 308 transitions, 1533 flow [2022-12-11 18:48:26,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 147.125) internal successors, (4708), 32 states have internal predecessors, (4708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:26,285 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:48:26,285 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:48:26,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-11 18:48:26,286 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:48:26,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:48:26,288 INFO L85 PathProgramCache]: Analyzing trace with hash 764654934, now seen corresponding path program 3 times [2022-12-11 18:48:26,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:48:26,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726480219] [2022-12-11 18:48:26,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:48:26,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:48:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:48:27,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:48:27,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:48:27,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726480219] [2022-12-11 18:48:27,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726480219] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:48:27,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:48:27,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-12-11 18:48:27,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826453352] [2022-12-11 18:48:27,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:48:27,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-11 18:48:27,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:48:27,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-11 18:48:27,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2022-12-11 18:48:27,637 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 264 [2022-12-11 18:48:27,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 308 transitions, 1533 flow. Second operand has 29 states, 29 states have (on average 147.3448275862069) internal successors, (4273), 29 states have internal predecessors, (4273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:27,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:48:27,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 264 [2022-12-11 18:48:27,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:48:30,100 INFO L130 PetriNetUnfolder]: 1624/6630 cut-off events. [2022-12-11 18:48:30,101 INFO L131 PetriNetUnfolder]: For 1789/1792 co-relation queries the response was YES. [2022-12-11 18:48:30,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11202 conditions, 6630 events. 1624/6630 cut-off events. For 1789/1792 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 56516 event pairs, 688 based on Foata normal form. 3/6295 useless extension candidates. Maximal degree in co-relation 11153. Up to 2119 conditions per place. [2022-12-11 18:48:30,147 INFO L137 encePairwiseOnDemand]: 232/264 looper letters, 143 selfloop transitions, 75 changer transitions 0/358 dead transitions. [2022-12-11 18:48:30,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 358 transitions, 2141 flow [2022-12-11 18:48:30,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-11 18:48:30,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-11 18:48:30,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4370 transitions. [2022-12-11 18:48:30,151 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5707941483803552 [2022-12-11 18:48:30,151 INFO L175 Difference]: Start difference. First operand has 358 places, 308 transitions, 1533 flow. Second operand 29 states and 4370 transitions. [2022-12-11 18:48:30,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 358 transitions, 2141 flow [2022-12-11 18:48:30,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 358 transitions, 2039 flow, removed 11 selfloop flow, removed 21 redundant places. [2022-12-11 18:48:30,166 INFO L231 Difference]: Finished difference. Result has 370 places, 315 transitions, 1704 flow [2022-12-11 18:48:30,166 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=1441, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1704, PETRI_PLACES=370, PETRI_TRANSITIONS=315} [2022-12-11 18:48:30,167 INFO L295 CegarLoopForPetriNet]: 245 programPoint places, 125 predicate places. [2022-12-11 18:48:30,167 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 315 transitions, 1704 flow [2022-12-11 18:48:30,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 147.3448275862069) internal successors, (4273), 29 states have internal predecessors, (4273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:30,168 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:48:30,168 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:48:30,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-11 18:48:30,168 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:48:30,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:48:30,169 INFO L85 PathProgramCache]: Analyzing trace with hash -799542954, now seen corresponding path program 4 times [2022-12-11 18:48:30,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:48:30,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134014296] [2022-12-11 18:48:30,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:48:30,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:48:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:48:31,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:48:31,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:48:31,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134014296] [2022-12-11 18:48:31,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134014296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:48:31,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:48:31,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-12-11 18:48:31,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515382745] [2022-12-11 18:48:31,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:48:31,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-11 18:48:31,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:48:31,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-11 18:48:31,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2022-12-11 18:48:31,407 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 264 [2022-12-11 18:48:31,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 315 transitions, 1704 flow. Second operand has 29 states, 29 states have (on average 147.3448275862069) internal successors, (4273), 29 states have internal predecessors, (4273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:31,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:48:31,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 264 [2022-12-11 18:48:31,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:48:33,760 INFO L130 PetriNetUnfolder]: 1653/6827 cut-off events. [2022-12-11 18:48:33,760 INFO L131 PetriNetUnfolder]: For 2311/2317 co-relation queries the response was YES. [2022-12-11 18:48:33,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11700 conditions, 6827 events. 1653/6827 cut-off events. For 2311/2317 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 58491 event pairs, 675 based on Foata normal form. 4/6482 useless extension candidates. Maximal degree in co-relation 11647. Up to 2122 conditions per place. [2022-12-11 18:48:33,812 INFO L137 encePairwiseOnDemand]: 232/264 looper letters, 143 selfloop transitions, 79 changer transitions 0/362 dead transitions. [2022-12-11 18:48:33,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 362 transitions, 2313 flow [2022-12-11 18:48:33,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-11 18:48:33,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-11 18:48:33,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4368 transitions. [2022-12-11 18:48:33,816 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5705329153605015 [2022-12-11 18:48:33,816 INFO L175 Difference]: Start difference. First operand has 370 places, 315 transitions, 1704 flow. Second operand 29 states and 4368 transitions. [2022-12-11 18:48:33,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 362 transitions, 2313 flow [2022-12-11 18:48:33,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 362 transitions, 2213 flow, removed 5 selfloop flow, removed 22 redundant places. [2022-12-11 18:48:33,829 INFO L231 Difference]: Finished difference. Result has 380 places, 320 transitions, 1876 flow [2022-12-11 18:48:33,830 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1876, PETRI_PLACES=380, PETRI_TRANSITIONS=320} [2022-12-11 18:48:33,830 INFO L295 CegarLoopForPetriNet]: 245 programPoint places, 135 predicate places. [2022-12-11 18:48:33,830 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 320 transitions, 1876 flow [2022-12-11 18:48:33,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 147.3448275862069) internal successors, (4273), 29 states have internal predecessors, (4273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:33,831 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:48:33,831 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:48:33,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-11 18:48:33,831 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:48:33,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:48:33,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1817769480, now seen corresponding path program 5 times [2022-12-11 18:48:33,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:48:33,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287671852] [2022-12-11 18:48:33,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:48:33,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:48:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:48:35,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:48:35,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:48:35,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287671852] [2022-12-11 18:48:35,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287671852] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:48:35,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:48:35,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-12-11 18:48:35,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200167114] [2022-12-11 18:48:35,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:48:35,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-11 18:48:35,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:48:35,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-11 18:48:35,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2022-12-11 18:48:35,138 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 264 [2022-12-11 18:48:35,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 320 transitions, 1876 flow. Second operand has 29 states, 29 states have (on average 147.3448275862069) internal successors, (4273), 29 states have internal predecessors, (4273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:35,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:48:35,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 264 [2022-12-11 18:48:35,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:48:37,445 INFO L130 PetriNetUnfolder]: 974/4161 cut-off events. [2022-12-11 18:48:37,445 INFO L131 PetriNetUnfolder]: For 2817/2822 co-relation queries the response was YES. [2022-12-11 18:48:37,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7928 conditions, 4161 events. 974/4161 cut-off events. For 2817/2822 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 30278 event pairs, 357 based on Foata normal form. 3/3962 useless extension candidates. Maximal degree in co-relation 7872. Up to 1095 conditions per place. [2022-12-11 18:48:37,474 INFO L137 encePairwiseOnDemand]: 234/264 looper letters, 132 selfloop transitions, 77 changer transitions 0/341 dead transitions. [2022-12-11 18:48:37,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 341 transitions, 2347 flow [2022-12-11 18:48:37,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-11 18:48:37,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-11 18:48:37,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4205 transitions. [2022-12-11 18:48:37,482 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5688582251082251 [2022-12-11 18:48:37,482 INFO L175 Difference]: Start difference. First operand has 380 places, 320 transitions, 1876 flow. Second operand 28 states and 4205 transitions. [2022-12-11 18:48:37,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 341 transitions, 2347 flow [2022-12-11 18:48:37,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 341 transitions, 2200 flow, removed 3 selfloop flow, removed 32 redundant places. [2022-12-11 18:48:37,496 INFO L231 Difference]: Finished difference. Result has 367 places, 309 transitions, 1845 flow [2022-12-11 18:48:37,497 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=1691, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1845, PETRI_PLACES=367, PETRI_TRANSITIONS=309} [2022-12-11 18:48:37,497 INFO L295 CegarLoopForPetriNet]: 245 programPoint places, 122 predicate places. [2022-12-11 18:48:37,497 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 309 transitions, 1845 flow [2022-12-11 18:48:37,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 147.3448275862069) internal successors, (4273), 29 states have internal predecessors, (4273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:37,498 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:48:37,498 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:48:37,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-11 18:48:37,498 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:48:37,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:48:37,499 INFO L85 PathProgramCache]: Analyzing trace with hash -800145663, now seen corresponding path program 1 times [2022-12-11 18:48:37,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:48:37,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997460057] [2022-12-11 18:48:37,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:48:37,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:48:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:48:37,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:48:37,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:48:37,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997460057] [2022-12-11 18:48:37,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997460057] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:48:37,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:48:37,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 18:48:37,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317021263] [2022-12-11 18:48:37,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:48:37,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 18:48:37,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:48:37,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 18:48:37,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 18:48:37,585 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 264 [2022-12-11 18:48:37,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 309 transitions, 1845 flow. Second operand has 3 states, 3 states have (on average 242.33333333333334) internal successors, (727), 3 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:37,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:48:37,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 264 [2022-12-11 18:48:37,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:48:37,807 INFO L130 PetriNetUnfolder]: 104/1463 cut-off events. [2022-12-11 18:48:37,808 INFO L131 PetriNetUnfolder]: For 1610/1618 co-relation queries the response was YES. [2022-12-11 18:48:37,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2712 conditions, 1463 events. 104/1463 cut-off events. For 1610/1618 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 8724 event pairs, 21 based on Foata normal form. 34/1422 useless extension candidates. Maximal degree in co-relation 2662. Up to 85 conditions per place. [2022-12-11 18:48:37,814 INFO L137 encePairwiseOnDemand]: 258/264 looper letters, 12 selfloop transitions, 6 changer transitions 0/311 dead transitions. [2022-12-11 18:48:37,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 311 transitions, 1888 flow [2022-12-11 18:48:37,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 18:48:37,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 18:48:37,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 735 transitions. [2022-12-11 18:48:37,815 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.928030303030303 [2022-12-11 18:48:37,815 INFO L175 Difference]: Start difference. First operand has 367 places, 309 transitions, 1845 flow. Second operand 3 states and 735 transitions. [2022-12-11 18:48:37,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 311 transitions, 1888 flow [2022-12-11 18:48:37,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 311 transitions, 1757 flow, removed 0 selfloop flow, removed 26 redundant places. [2022-12-11 18:48:37,828 INFO L231 Difference]: Finished difference. Result has 343 places, 309 transitions, 1726 flow [2022-12-11 18:48:37,828 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=1714, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1726, PETRI_PLACES=343, PETRI_TRANSITIONS=309} [2022-12-11 18:48:37,829 INFO L295 CegarLoopForPetriNet]: 245 programPoint places, 98 predicate places. [2022-12-11 18:48:37,829 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 309 transitions, 1726 flow [2022-12-11 18:48:37,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.33333333333334) internal successors, (727), 3 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:37,829 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:48:37,829 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:48:37,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-11 18:48:37,829 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:48:37,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:48:37,830 INFO L85 PathProgramCache]: Analyzing trace with hash -691467094, now seen corresponding path program 1 times [2022-12-11 18:48:37,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:48:37,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744057305] [2022-12-11 18:48:37,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:48:37,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:48:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:48:39,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:48:39,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:48:39,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744057305] [2022-12-11 18:48:39,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744057305] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:48:39,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:48:39,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-11 18:48:39,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126712758] [2022-12-11 18:48:39,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:48:39,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-11 18:48:39,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:48:39,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-11 18:48:39,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2022-12-11 18:48:39,342 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 264 [2022-12-11 18:48:39,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 309 transitions, 1726 flow. Second operand has 30 states, 30 states have (on average 151.86666666666667) internal successors, (4556), 30 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:39,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:48:39,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 264 [2022-12-11 18:48:39,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:48:41,751 INFO L130 PetriNetUnfolder]: 667/3210 cut-off events. [2022-12-11 18:48:41,751 INFO L131 PetriNetUnfolder]: For 2837/2844 co-relation queries the response was YES. [2022-12-11 18:48:41,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6975 conditions, 3210 events. 667/3210 cut-off events. For 2837/2844 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 22860 event pairs, 73 based on Foata normal form. 0/3067 useless extension candidates. Maximal degree in co-relation 6925. Up to 433 conditions per place. [2022-12-11 18:48:41,768 INFO L137 encePairwiseOnDemand]: 228/264 looper letters, 181 selfloop transitions, 83 changer transitions 0/402 dead transitions. [2022-12-11 18:48:41,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 402 transitions, 2583 flow [2022-12-11 18:48:41,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-11 18:48:41,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-11 18:48:41,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5120 transitions. [2022-12-11 18:48:41,786 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5876951331496786 [2022-12-11 18:48:41,786 INFO L175 Difference]: Start difference. First operand has 343 places, 309 transitions, 1726 flow. Second operand 33 states and 5120 transitions. [2022-12-11 18:48:41,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 402 transitions, 2583 flow [2022-12-11 18:48:41,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 402 transitions, 2577 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 18:48:41,801 INFO L231 Difference]: Finished difference. Result has 381 places, 332 transitions, 2105 flow [2022-12-11 18:48:41,802 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2105, PETRI_PLACES=381, PETRI_TRANSITIONS=332} [2022-12-11 18:48:41,802 INFO L295 CegarLoopForPetriNet]: 245 programPoint places, 136 predicate places. [2022-12-11 18:48:41,802 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 332 transitions, 2105 flow [2022-12-11 18:48:41,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 151.86666666666667) internal successors, (4556), 30 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:41,803 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:48:41,803 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:48:41,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-11 18:48:41,803 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:48:41,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:48:41,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1393989510, now seen corresponding path program 2 times [2022-12-11 18:48:41,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:48:41,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751255110] [2022-12-11 18:48:41,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:48:41,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:48:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:48:44,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:48:44,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:48:44,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751255110] [2022-12-11 18:48:44,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751255110] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:48:44,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:48:44,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-12-11 18:48:44,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38899929] [2022-12-11 18:48:44,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:48:44,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-11 18:48:44,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:48:44,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-11 18:48:44,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1168, Unknown=0, NotChecked=0, Total=1332 [2022-12-11 18:48:44,262 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 264 [2022-12-11 18:48:44,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 332 transitions, 2105 flow. Second operand has 37 states, 37 states have (on average 139.51351351351352) internal successors, (5162), 37 states have internal predecessors, (5162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:44,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:48:44,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 264 [2022-12-11 18:48:44,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:48:47,825 INFO L130 PetriNetUnfolder]: 869/4016 cut-off events. [2022-12-11 18:48:47,825 INFO L131 PetriNetUnfolder]: For 4060/4073 co-relation queries the response was YES. [2022-12-11 18:48:47,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9079 conditions, 4016 events. 869/4016 cut-off events. For 4060/4073 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 30146 event pairs, 94 based on Foata normal form. 0/3859 useless extension candidates. Maximal degree in co-relation 9021. Up to 431 conditions per place. [2022-12-11 18:48:47,846 INFO L137 encePairwiseOnDemand]: 223/264 looper letters, 226 selfloop transitions, 100 changer transitions 0/455 dead transitions. [2022-12-11 18:48:47,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 455 transitions, 3140 flow [2022-12-11 18:48:47,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-11 18:48:47,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-12-11 18:48:47,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 5999 transitions. [2022-12-11 18:48:47,850 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5410353535353535 [2022-12-11 18:48:47,850 INFO L175 Difference]: Start difference. First operand has 381 places, 332 transitions, 2105 flow. Second operand 42 states and 5999 transitions. [2022-12-11 18:48:47,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 455 transitions, 3140 flow [2022-12-11 18:48:47,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 455 transitions, 3009 flow, removed 12 selfloop flow, removed 20 redundant places. [2022-12-11 18:48:47,870 INFO L231 Difference]: Finished difference. Result has 411 places, 357 transitions, 2348 flow [2022-12-11 18:48:47,870 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=1982, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=2348, PETRI_PLACES=411, PETRI_TRANSITIONS=357} [2022-12-11 18:48:47,871 INFO L295 CegarLoopForPetriNet]: 245 programPoint places, 166 predicate places. [2022-12-11 18:48:47,871 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 357 transitions, 2348 flow [2022-12-11 18:48:47,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 139.51351351351352) internal successors, (5162), 37 states have internal predecessors, (5162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:47,872 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:48:47,872 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:48:47,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-11 18:48:47,872 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:48:47,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:48:47,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1861866929, now seen corresponding path program 1 times [2022-12-11 18:48:47,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:48:47,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983957684] [2022-12-11 18:48:47,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:48:47,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:48:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:48:49,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:48:49,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:48:49,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983957684] [2022-12-11 18:48:49,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983957684] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:48:49,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:48:49,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-12-11 18:48:49,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679856257] [2022-12-11 18:48:49,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:48:49,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-11 18:48:49,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:48:49,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-11 18:48:49,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2022-12-11 18:48:49,424 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 264 [2022-12-11 18:48:49,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 357 transitions, 2348 flow. Second operand has 31 states, 31 states have (on average 151.80645161290323) internal successors, (4706), 31 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:49,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:48:49,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 264 [2022-12-11 18:48:49,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:48:52,016 INFO L130 PetriNetUnfolder]: 839/3985 cut-off events. [2022-12-11 18:48:52,017 INFO L131 PetriNetUnfolder]: For 5027/5042 co-relation queries the response was YES. [2022-12-11 18:48:52,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9637 conditions, 3985 events. 839/3985 cut-off events. For 5027/5042 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 29712 event pairs, 104 based on Foata normal form. 5/3845 useless extension candidates. Maximal degree in co-relation 9570. Up to 780 conditions per place. [2022-12-11 18:48:52,054 INFO L137 encePairwiseOnDemand]: 225/264 looper letters, 191 selfloop transitions, 93 changer transitions 0/426 dead transitions. [2022-12-11 18:48:52,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 426 transitions, 3160 flow [2022-12-11 18:48:52,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-11 18:48:52,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-11 18:48:52,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4812 transitions. [2022-12-11 18:48:52,072 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5879765395894428 [2022-12-11 18:48:52,072 INFO L175 Difference]: Start difference. First operand has 411 places, 357 transitions, 2348 flow. Second operand 31 states and 4812 transitions. [2022-12-11 18:48:52,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 426 transitions, 3160 flow [2022-12-11 18:48:52,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 426 transitions, 3002 flow, removed 4 selfloop flow, removed 26 redundant places. [2022-12-11 18:48:52,101 INFO L231 Difference]: Finished difference. Result has 419 places, 364 transitions, 2483 flow [2022-12-11 18:48:52,102 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=2194, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2483, PETRI_PLACES=419, PETRI_TRANSITIONS=364} [2022-12-11 18:48:52,102 INFO L295 CegarLoopForPetriNet]: 245 programPoint places, 174 predicate places. [2022-12-11 18:48:52,102 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 364 transitions, 2483 flow [2022-12-11 18:48:52,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 151.80645161290323) internal successors, (4706), 31 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:52,103 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:48:52,103 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:48:52,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-11 18:48:52,104 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:48:52,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:48:52,104 INFO L85 PathProgramCache]: Analyzing trace with hash 942926577, now seen corresponding path program 2 times [2022-12-11 18:48:52,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:48:52,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575893032] [2022-12-11 18:48:52,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:48:52,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:48:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:48:53,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:48:53,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:48:53,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575893032] [2022-12-11 18:48:53,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575893032] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:48:53,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:48:53,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-12-11 18:48:53,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117955238] [2022-12-11 18:48:53,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:48:53,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-11 18:48:53,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:48:53,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-11 18:48:53,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2022-12-11 18:48:53,767 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 264 [2022-12-11 18:48:53,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 364 transitions, 2483 flow. Second operand has 31 states, 31 states have (on average 151.80645161290323) internal successors, (4706), 31 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:53,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:48:53,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 264 [2022-12-11 18:48:53,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:48:56,063 INFO L130 PetriNetUnfolder]: 655/3232 cut-off events. [2022-12-11 18:48:56,063 INFO L131 PetriNetUnfolder]: For 5664/5677 co-relation queries the response was YES. [2022-12-11 18:48:56,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8328 conditions, 3232 events. 655/3232 cut-off events. For 5664/5677 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 22932 event pairs, 102 based on Foata normal form. 6/3113 useless extension candidates. Maximal degree in co-relation 8257. Up to 480 conditions per place. [2022-12-11 18:48:56,088 INFO L137 encePairwiseOnDemand]: 231/264 looper letters, 166 selfloop transitions, 84 changer transitions 0/390 dead transitions. [2022-12-11 18:48:56,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 390 transitions, 3001 flow [2022-12-11 18:48:56,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-11 18:48:56,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-11 18:48:56,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4335 transitions. [2022-12-11 18:48:56,091 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5864448051948052 [2022-12-11 18:48:56,092 INFO L175 Difference]: Start difference. First operand has 419 places, 364 transitions, 2483 flow. Second operand 28 states and 4335 transitions. [2022-12-11 18:48:56,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 390 transitions, 3001 flow [2022-12-11 18:48:56,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 390 transitions, 2822 flow, removed 13 selfloop flow, removed 30 redundant places. [2022-12-11 18:48:56,116 INFO L231 Difference]: Finished difference. Result has 412 places, 351 transitions, 2411 flow [2022-12-11 18:48:56,116 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=2191, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2411, PETRI_PLACES=412, PETRI_TRANSITIONS=351} [2022-12-11 18:48:56,117 INFO L295 CegarLoopForPetriNet]: 245 programPoint places, 167 predicate places. [2022-12-11 18:48:56,117 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 351 transitions, 2411 flow [2022-12-11 18:48:56,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 151.80645161290323) internal successors, (4706), 31 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:56,118 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:48:56,118 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:48:56,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-11 18:48:56,118 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:48:56,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:48:56,118 INFO L85 PathProgramCache]: Analyzing trace with hash 859594612, now seen corresponding path program 1 times [2022-12-11 18:48:56,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:48:56,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923107554] [2022-12-11 18:48:56,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:48:56,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:48:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:49:47,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:49:47,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:49:47,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923107554] [2022-12-11 18:49:47,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923107554] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:49:47,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:49:47,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-12-11 18:49:47,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956195254] [2022-12-11 18:49:47,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:49:47,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-11 18:49:47,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:49:47,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-11 18:49:47,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2547, Unknown=0, NotChecked=0, Total=2756 [2022-12-11 18:49:47,834 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 264 [2022-12-11 18:49:47,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 351 transitions, 2411 flow. Second operand has 53 states, 53 states have (on average 114.20754716981132) internal successors, (6053), 53 states have internal predecessors, (6053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:49:47,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:49:47,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 264 [2022-12-11 18:49:47,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:51:04,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-11 18:51:23,411 WARN L233 SmtUtils]: Spent 11.76s on a formula simplification. DAG size of input: 141 DAG size of output: 138 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:51:36,659 WARN L233 SmtUtils]: Spent 12.36s on a formula simplification. DAG size of input: 136 DAG size of output: 133 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:51:56,129 WARN L233 SmtUtils]: Spent 14.02s on a formula simplification. DAG size of input: 154 DAG size of output: 151 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:52:12,863 WARN L233 SmtUtils]: Spent 13.41s on a formula simplification. DAG size of input: 149 DAG size of output: 146 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:52:28,826 WARN L233 SmtUtils]: Spent 14.11s on a formula simplification. DAG size of input: 161 DAG size of output: 155 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:52:46,401 WARN L233 SmtUtils]: Spent 13.76s on a formula simplification. DAG size of input: 164 DAG size of output: 158 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:53:02,324 WARN L233 SmtUtils]: Spent 13.61s on a formula simplification. DAG size of input: 156 DAG size of output: 150 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:53:18,118 WARN L233 SmtUtils]: Spent 14.09s on a formula simplification. DAG size of input: 167 DAG size of output: 161 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:53:35,872 WARN L233 SmtUtils]: Spent 13.82s on a formula simplification. DAG size of input: 159 DAG size of output: 153 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:53:52,156 WARN L233 SmtUtils]: Spent 14.76s on a formula simplification. DAG size of input: 160 DAG size of output: 157 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:54:08,941 WARN L233 SmtUtils]: Spent 13.85s on a formula simplification. DAG size of input: 162 DAG size of output: 156 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:54:24,431 WARN L233 SmtUtils]: Spent 13.88s on a formula simplification. DAG size of input: 157 DAG size of output: 154 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:54:39,889 WARN L233 SmtUtils]: Spent 14.24s on a formula simplification. DAG size of input: 155 DAG size of output: 152 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:54:57,767 WARN L233 SmtUtils]: Spent 13.16s on a formula simplification. DAG size of input: 152 DAG size of output: 149 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:55:02,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-11 18:55:05,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-11 18:55:07,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-11 18:55:19,339 INFO L130 PetriNetUnfolder]: 7779/18435 cut-off events. [2022-12-11 18:55:19,340 INFO L131 PetriNetUnfolder]: For 26351/26353 co-relation queries the response was YES. [2022-12-11 18:55:19,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46001 conditions, 18435 events. 7779/18435 cut-off events. For 26351/26353 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 155107 event pairs, 3607 based on Foata normal form. 2/17057 useless extension candidates. Maximal degree in co-relation 45933. Up to 8042 conditions per place. [2022-12-11 18:55:19,512 INFO L137 encePairwiseOnDemand]: 205/264 looper letters, 586 selfloop transitions, 176 changer transitions 52/918 dead transitions. [2022-12-11 18:55:19,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 918 transitions, 6033 flow [2022-12-11 18:55:19,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-12-11 18:55:19,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2022-12-11 18:55:19,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 8672 transitions. [2022-12-11 18:55:19,518 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4626547161758429 [2022-12-11 18:55:19,518 INFO L175 Difference]: Start difference. First operand has 412 places, 351 transitions, 2411 flow. Second operand 71 states and 8672 transitions. [2022-12-11 18:55:19,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 918 transitions, 6033 flow [2022-12-11 18:55:19,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 918 transitions, 5838 flow, removed 6 selfloop flow, removed 26 redundant places. [2022-12-11 18:55:19,650 INFO L231 Difference]: Finished difference. Result has 506 places, 476 transitions, 3858 flow [2022-12-11 18:55:19,651 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=2250, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=3858, PETRI_PLACES=506, PETRI_TRANSITIONS=476} [2022-12-11 18:55:19,652 INFO L295 CegarLoopForPetriNet]: 245 programPoint places, 261 predicate places. [2022-12-11 18:55:19,652 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 476 transitions, 3858 flow [2022-12-11 18:55:19,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 114.20754716981132) internal successors, (6053), 53 states have internal predecessors, (6053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:55:19,653 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:19,653 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:55:19,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-11 18:55:19,653 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:55:19,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:19,654 INFO L85 PathProgramCache]: Analyzing trace with hash 209397372, now seen corresponding path program 2 times [2022-12-11 18:55:19,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:19,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533972177] [2022-12-11 18:55:19,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:19,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:27,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:55:27,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:27,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533972177] [2022-12-11 18:55:27,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533972177] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:55:27,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:55:27,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-12-11 18:55:27,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340820897] [2022-12-11 18:55:27,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:55:27,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-11 18:55:27,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:27,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-11 18:55:27,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1916, Unknown=0, NotChecked=0, Total=2070 [2022-12-11 18:55:27,620 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 264 [2022-12-11 18:55:27,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 476 transitions, 3858 flow. Second operand has 46 states, 46 states have (on average 126.41304347826087) internal successors, (5815), 46 states have internal predecessors, (5815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:55:27,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:27,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 264 [2022-12-11 18:55:27,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:47,114 INFO L130 PetriNetUnfolder]: 8910/21267 cut-off events. [2022-12-11 18:55:47,114 INFO L131 PetriNetUnfolder]: For 192256/192340 co-relation queries the response was YES. [2022-12-11 18:55:47,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81302 conditions, 21267 events. 8910/21267 cut-off events. For 192256/192340 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 184126 event pairs, 4294 based on Foata normal form. 179/20958 useless extension candidates. Maximal degree in co-relation 81184. Up to 12737 conditions per place. [2022-12-11 18:55:47,436 INFO L137 encePairwiseOnDemand]: 214/264 looper letters, 559 selfloop transitions, 117 changer transitions 38/836 dead transitions. [2022-12-11 18:55:47,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 836 transitions, 7752 flow [2022-12-11 18:55:47,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-11 18:55:47,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-12-11 18:55:47,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 8190 transitions. [2022-12-11 18:55:47,444 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.500366568914956 [2022-12-11 18:55:47,444 INFO L175 Difference]: Start difference. First operand has 506 places, 476 transitions, 3858 flow. Second operand 62 states and 8190 transitions. [2022-12-11 18:55:47,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 836 transitions, 7752 flow [2022-12-11 18:55:48,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 836 transitions, 7631 flow, removed 19 selfloop flow, removed 18 redundant places. [2022-12-11 18:55:48,105 INFO L231 Difference]: Finished difference. Result has 580 places, 574 transitions, 5575 flow [2022-12-11 18:55:48,106 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=3765, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=5575, PETRI_PLACES=580, PETRI_TRANSITIONS=574} [2022-12-11 18:55:48,106 INFO L295 CegarLoopForPetriNet]: 245 programPoint places, 335 predicate places. [2022-12-11 18:55:48,106 INFO L495 AbstractCegarLoop]: Abstraction has has 580 places, 574 transitions, 5575 flow [2022-12-11 18:55:48,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 126.41304347826087) internal successors, (5815), 46 states have internal predecessors, (5815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:55:48,107 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:48,107 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:55:48,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-11 18:55:48,107 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:55:48,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:48,108 INFO L85 PathProgramCache]: Analyzing trace with hash 304499046, now seen corresponding path program 3 times [2022-12-11 18:55:48,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:48,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592327992] [2022-12-11 18:55:48,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:48,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:56:41,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:56:41,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:56:41,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592327992] [2022-12-11 18:56:41,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592327992] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:56:41,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:56:41,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-12-11 18:56:41,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821943359] [2022-12-11 18:56:41,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:56:41,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-11 18:56:41,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:56:41,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-11 18:56:41,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2094, Unknown=0, NotChecked=0, Total=2256 [2022-12-11 18:56:41,253 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 264 [2022-12-11 18:56:41,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 574 transitions, 5575 flow. Second operand has 48 states, 48 states have (on average 123.375) internal successors, (5922), 48 states have internal predecessors, (5922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:56:41,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:56:41,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 264 [2022-12-11 18:56:41,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:57:17,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-11 18:57:33,983 WARN L233 SmtUtils]: Spent 11.32s on a formula simplification. DAG size of input: 133 DAG size of output: 131 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:57:47,360 WARN L233 SmtUtils]: Spent 12.55s on a formula simplification. DAG size of input: 138 DAG size of output: 136 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:58:07,169 WARN L233 SmtUtils]: Spent 13.75s on a formula simplification. DAG size of input: 151 DAG size of output: 149 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:58:23,921 WARN L233 SmtUtils]: Spent 13.36s on a formula simplification. DAG size of input: 146 DAG size of output: 144 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:58:41,586 WARN L233 SmtUtils]: Spent 15.37s on a formula simplification. DAG size of input: 157 DAG size of output: 155 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:59:01,313 WARN L233 SmtUtils]: Spent 14.42s on a formula simplification. DAG size of input: 160 DAG size of output: 158 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:59:17,230 WARN L233 SmtUtils]: Spent 14.96s on a formula simplification. DAG size of input: 152 DAG size of output: 150 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:59:37,688 WARN L233 SmtUtils]: Spent 15.93s on a formula simplification. DAG size of input: 163 DAG size of output: 161 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:59:55,805 WARN L233 SmtUtils]: Spent 15.23s on a formula simplification. DAG size of input: 155 DAG size of output: 153 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 19:00:14,314 WARN L233 SmtUtils]: Spent 15.05s on a formula simplification. DAG size of input: 157 DAG size of output: 155 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2022-12-11 19:00:23,513 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-11 19:00:23,525 WARN L249 SmtUtils]: Removed 41 from assertion stack [2022-12-11 19:00:23,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-11 19:00:23,526 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-12-11 19:00:23,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-11 19:00:23,527 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 158 for 7717ms.. [2022-12-11 19:00:23,528 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-12-11 19:00:23,528 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-12-11 19:00:23,528 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-12-11 19:00:23,528 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-12-11 19:00:23,528 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-12-11 19:00:23,528 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-12-11 19:00:23,528 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:00:23,535 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 19:00:23,535 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 19:00:23,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 07:00:23 BasicIcfg [2022-12-11 19:00:23,538 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 19:00:23,539 INFO L158 Benchmark]: Toolchain (without parser) took 846516.27ms. Allocated memory was 185.6MB in the beginning and 2.7GB in the end (delta: 2.5GB). Free memory was 159.6MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2022-12-11 19:00:23,539 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 185.6MB. Free memory is still 162.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 19:00:23,539 INFO L158 Benchmark]: CACSL2BoogieTranslator took 449.11ms. Allocated memory is still 185.6MB. Free memory was 159.6MB in the beginning and 129.1MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2022-12-11 19:00:23,539 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.17ms. Allocated memory is still 185.6MB. Free memory was 129.1MB in the beginning and 126.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-11 19:00:23,539 INFO L158 Benchmark]: Boogie Preprocessor took 36.22ms. Allocated memory is still 185.6MB. Free memory was 126.0MB in the beginning and 123.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 19:00:23,540 INFO L158 Benchmark]: RCFGBuilder took 570.27ms. Allocated memory is still 185.6MB. Free memory was 123.9MB in the beginning and 100.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-11 19:00:23,540 INFO L158 Benchmark]: TraceAbstraction took 845408.92ms. Allocated memory was 185.6MB in the beginning and 2.7GB in the end (delta: 2.5GB). Free memory was 99.3MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2022-12-11 19:00:23,543 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 185.6MB. Free memory is still 162.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 449.11ms. Allocated memory is still 185.6MB. Free memory was 159.6MB in the beginning and 129.1MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.17ms. Allocated memory is still 185.6MB. Free memory was 129.1MB in the beginning and 126.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.22ms. Allocated memory is still 185.6MB. Free memory was 126.0MB in the beginning and 123.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 570.27ms. Allocated memory is still 185.6MB. Free memory was 123.9MB in the beginning and 100.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 845408.92ms. Allocated memory was 185.6MB in the beginning and 2.7GB in the end (delta: 2.5GB). Free memory was 99.3MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1043]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 158 for 7717ms.. - TimeoutResultAtElement [Line: 1059]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 158 for 7717ms.. - TimeoutResultAtElement [Line: 1064]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 158 for 7717ms.. - TimeoutResultAtElement [Line: 1063]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 158 for 7717ms.. - TimeoutResultAtElement [Line: 1032]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 158 for 7717ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 411 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 845.3s, OverallIterations: 23, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 688.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 12102 SdHoareTripleChecker+Valid, 175.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12102 mSDsluCounter, 14413 SdHoareTripleChecker+Invalid, 169.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13027 mSDsCounter, 1039 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32965 IncrementalHoareTripleChecker+Invalid, 34005 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1039 mSolverCounterUnsat, 1386 mSDtfsCounter, 32965 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1362 GetRequests, 325 SyntacticMatches, 17 SemanticMatches, 1019 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15610 ImplicationChecksByTransitivity, 508.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5575occurred in iteration=22, InterpolantAutomatonStates: 546, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 156.0s InterpolantComputationTime, 3117 NumberOfCodeBlocks, 3117 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 3094 ConstructedInterpolants, 0 QuantifiedInterpolants, 361735 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown