/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-SemanticLbe.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 [2022-12-12 14:19:31,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 14:19:31,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 14:19:31,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 14:19:31,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 14:19:31,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 14:19:31,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 14:19:31,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 14:19:31,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 14:19:31,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 14:19:31,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 14:19:31,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 14:19:31,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 14:19:31,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 14:19:31,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 14:19:31,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 14:19:31,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 14:19:31,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 14:19:31,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 14:19:31,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 14:19:31,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 14:19:31,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 14:19:31,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 14:19:31,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 14:19:31,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 14:19:31,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 14:19:31,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 14:19:31,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 14:19:31,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 14:19:31,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 14:19:31,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 14:19:31,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 14:19:31,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 14:19:31,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 14:19:31,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 14:19:31,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 14:19:31,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 14:19:31,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 14:19:31,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 14:19:31,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 14:19:31,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 14:19:31,487 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-SemanticLbe.epf [2022-12-12 14:19:31,516 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 14:19:31,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 14:19:31,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 14:19:31,517 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 14:19:31,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 14:19:31,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 14:19:31,517 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 14:19:31,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 14:19:31,518 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 14:19:31,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 14:19:31,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 14:19:31,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 14:19:31,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 14:19:31,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 14:19:31,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 14:19:31,518 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 14:19:31,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 14:19:31,518 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 14:19:31,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 14:19:31,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 14:19:31,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 14:19:31,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 14:19:31,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 14:19:31,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 14:19:31,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 14:19:31,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 14:19:31,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 14:19:31,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 14:19:31,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 14:19:31,520 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 14:19:31,520 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 14:19:31,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 14:19:31,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 14:19:31,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 14:19:31,810 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 14:19:31,811 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 14:19:31,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue.i [2022-12-12 14:19:32,833 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 14:19:33,101 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 14:19:33,101 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i [2022-12-12 14:19:33,125 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1085ddd9d/a388f228725745638f9143f4be3e1176/FLAG57e718278 [2022-12-12 14:19:33,137 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1085ddd9d/a388f228725745638f9143f4be3e1176 [2022-12-12 14:19:33,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 14:19:33,140 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 14:19:33,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 14:19:33,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 14:19:33,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 14:19:33,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 02:19:33" (1/1) ... [2022-12-12 14:19:33,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42c9078f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:19:33, skipping insertion in model container [2022-12-12 14:19:33,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 02:19:33" (1/1) ... [2022-12-12 14:19:33,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 14:19:33,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 14:19:33,493 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] [2022-12-12 14:19:33,497 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] [2022-12-12 14:19:33,502 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] [2022-12-12 14:19:33,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 14:19:33,520 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 14:19:33,587 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] [2022-12-12 14:19:33,588 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] [2022-12-12 14:19:33,600 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] [2022-12-12 14:19:33,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 14:19:33,660 INFO L208 MainTranslator]: Completed translation [2022-12-12 14:19:33,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:19:33 WrapperNode [2022-12-12 14:19:33,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 14:19:33,662 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 14:19:33,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 14:19:33,662 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 14:19:33,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:19:33" (1/1) ... [2022-12-12 14:19:33,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:19:33" (1/1) ... [2022-12-12 14:19:33,724 INFO L138 Inliner]: procedures = 274, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 250 [2022-12-12 14:19:33,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 14:19:33,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 14:19:33,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 14:19:33,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 14:19:33,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:19:33" (1/1) ... [2022-12-12 14:19:33,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:19:33" (1/1) ... [2022-12-12 14:19:33,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:19:33" (1/1) ... [2022-12-12 14:19:33,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:19:33" (1/1) ... [2022-12-12 14:19:33,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:19:33" (1/1) ... [2022-12-12 14:19:33,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:19:33" (1/1) ... [2022-12-12 14:19:33,769 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:19:33" (1/1) ... [2022-12-12 14:19:33,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:19:33" (1/1) ... [2022-12-12 14:19:33,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 14:19:33,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 14:19:33,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 14:19:33,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 14:19:33,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:19:33" (1/1) ... [2022-12-12 14:19:33,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 14:19:33,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 14:19:33,801 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) [2022-12-12 14:19:33,807 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 [2022-12-12 14:19:33,831 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-12 14:19:33,831 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-12 14:19:33,831 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-12 14:19:33,832 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-12 14:19:33,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 14:19:33,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 14:19:33,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 14:19:33,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 14:19:33,832 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-12 14:19:33,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 14:19:33,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 14:19:33,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 14:19:33,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 14:19:33,834 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 14:19:34,006 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 14:19:34,008 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 14:19:34,347 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 14:19:34,354 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 14:19:34,354 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-12 14:19:34,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 02:19:34 BoogieIcfgContainer [2022-12-12 14:19:34,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 14:19:34,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 14:19:34,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 14:19:34,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 14:19:34,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 02:19:33" (1/3) ... [2022-12-12 14:19:34,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fff397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 02:19:34, skipping insertion in model container [2022-12-12 14:19:34,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:19:33" (2/3) ... [2022-12-12 14:19:34,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fff397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 02:19:34, skipping insertion in model container [2022-12-12 14:19:34,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 02:19:34" (3/3) ... [2022-12-12 14:19:34,366 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2022-12-12 14:19:34,378 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 14:19:34,378 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-12 14:19:34,378 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 14:19:34,480 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 14:19:34,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 264 transitions, 544 flow [2022-12-12 14:19:34,622 INFO L130 PetriNetUnfolder]: 15/262 cut-off events. [2022-12-12 14:19:34,622 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 14:19:34,629 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. [2022-12-12 14:19:34,629 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 264 transitions, 544 flow [2022-12-12 14:19:34,636 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 253 transitions, 515 flow [2022-12-12 14:19:34,637 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 14:19:34,656 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 245 places, 253 transitions, 515 flow [2022-12-12 14:19:34,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 253 transitions, 515 flow [2022-12-12 14:19:34,726 INFO L130 PetriNetUnfolder]: 15/253 cut-off events. [2022-12-12 14:19:34,726 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 14:19:34,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 253 events. 15/253 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 328 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 191. Up to 2 conditions per place. [2022-12-12 14:19:34,738 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 245 places, 253 transitions, 515 flow [2022-12-12 14:19:34,739 INFO L226 LiptonReduction]: Number of co-enabled transitions 15600 [2022-12-12 14:19:45,006 INFO L241 LiptonReduction]: Total number of compositions: 216 [2022-12-12 14:19:45,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 14:19:45,027 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;@641715f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 14:19:45,027 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-12 14:19:45,029 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2022-12-12 14:19:45,029 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 14:19:45,029 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:19:45,030 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-12 14:19:45,031 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)] === [2022-12-12 14:19:45,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:19:45,034 INFO L85 PathProgramCache]: Analyzing trace with hash 35840, now seen corresponding path program 1 times [2022-12-12 14:19:45,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:19:45,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002266181] [2022-12-12 14:19:45,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:19:45,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:19:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:19:45,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:19:45,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:19:45,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002266181] [2022-12-12 14:19:45,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002266181] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:19:45,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:19:45,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 14:19:45,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455992083] [2022-12-12 14:19:45,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:19:45,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-12 14:19:45,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:19:45,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-12 14:19:45,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-12 14:19:45,169 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 192 [2022-12-12 14:19:45,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 192 transitions, 393 flow. Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:19:45,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:19:45,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 192 [2022-12-12 14:19:45,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:19:47,263 INFO L130 PetriNetUnfolder]: 23223/37858 cut-off events. [2022-12-12 14:19:47,263 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-12-12 14:19:47,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73984 conditions, 37858 events. 23223/37858 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 1029. Compared 281084 event pairs, 20831 based on Foata normal form. 143/13203 useless extension candidates. Maximal degree in co-relation 73502. Up to 35893 conditions per place. [2022-12-12 14:19:47,365 INFO L137 encePairwiseOnDemand]: 183/192 looper letters, 156 selfloop transitions, 0 changer transitions 0/181 dead transitions. [2022-12-12 14:19:47,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 181 transitions, 683 flow [2022-12-12 14:19:47,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-12 14:19:47,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-12 14:19:47,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 217 transitions. [2022-12-12 14:19:47,375 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5651041666666666 [2022-12-12 14:19:47,376 INFO L175 Difference]: Start difference. First operand has 181 places, 192 transitions, 393 flow. Second operand 2 states and 217 transitions. [2022-12-12 14:19:47,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 181 transitions, 683 flow [2022-12-12 14:19:47,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 181 transitions, 678 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-12 14:19:47,388 INFO L231 Difference]: Finished difference. Result has 173 places, 181 transitions, 366 flow [2022-12-12 14:19:47,389 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=366, PETRI_PLACES=173, PETRI_TRANSITIONS=181} [2022-12-12 14:19:47,392 INFO L295 CegarLoopForPetriNet]: 181 programPoint places, -8 predicate places. [2022-12-12 14:19:47,392 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 181 transitions, 366 flow [2022-12-12 14:19:47,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:19:47,393 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:19:47,393 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:19:47,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 14:19:47,393 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)] === [2022-12-12 14:19:47,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:19:47,399 INFO L85 PathProgramCache]: Analyzing trace with hash -754310581, now seen corresponding path program 1 times [2022-12-12 14:19:47,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:19:47,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594626627] [2022-12-12 14:19:47,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:19:47,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:19:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:19:48,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:19:48,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:19:48,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594626627] [2022-12-12 14:19:48,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594626627] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:19:48,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:19:48,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 14:19:48,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256127101] [2022-12-12 14:19:48,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:19:48,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 14:19:48,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:19:48,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 14:19:48,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-12 14:19:48,184 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 192 [2022-12-12 14:19:48,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 181 transitions, 366 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:19:48,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:19:48,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 192 [2022-12-12 14:19:48,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:19:50,736 INFO L130 PetriNetUnfolder]: 26602/42421 cut-off events. [2022-12-12 14:19:50,737 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 14:19:50,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83728 conditions, 42421 events. 26602/42421 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1081. Compared 305507 event pairs, 21526 based on Foata normal form. 0/13670 useless extension candidates. Maximal degree in co-relation 83725. Up to 40418 conditions per place. [2022-12-12 14:19:50,842 INFO L137 encePairwiseOnDemand]: 175/192 looper letters, 247 selfloop transitions, 21 changer transitions 6/290 dead transitions. [2022-12-12 14:19:50,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 290 transitions, 1134 flow [2022-12-12 14:19:50,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 14:19:50,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 14:19:50,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 431 transitions. [2022-12-12 14:19:50,848 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2494212962962963 [2022-12-12 14:19:50,848 INFO L175 Difference]: Start difference. First operand has 173 places, 181 transitions, 366 flow. Second operand 9 states and 431 transitions. [2022-12-12 14:19:50,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 290 transitions, 1134 flow [2022-12-12 14:19:50,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 290 transitions, 1134 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-12 14:19:50,854 INFO L231 Difference]: Finished difference. Result has 186 places, 201 transitions, 508 flow [2022-12-12 14:19:50,855 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=508, PETRI_PLACES=186, PETRI_TRANSITIONS=201} [2022-12-12 14:19:50,855 INFO L295 CegarLoopForPetriNet]: 181 programPoint places, 5 predicate places. [2022-12-12 14:19:50,855 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 201 transitions, 508 flow [2022-12-12 14:19:50,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:19:50,858 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:19:50,858 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:19:50,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 14:19:50,859 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 14:19:50,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:19:50,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1085635225, now seen corresponding path program 1 times [2022-12-12 14:19:50,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:19:50,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801945554] [2022-12-12 14:19:50,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:19:50,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:19:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:19:50,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:19:50,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:19:50,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801945554] [2022-12-12 14:19:50,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801945554] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:19:50,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:19:50,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 14:19:50,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71212425] [2022-12-12 14:19:50,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:19:50,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 14:19:50,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:19:50,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 14:19:50,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 14:19:50,952 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 192 [2022-12-12 14:19:50,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 201 transitions, 508 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:19:50,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:19:50,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 192 [2022-12-12 14:19:50,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:19:52,386 INFO L130 PetriNetUnfolder]: 16122/26529 cut-off events. [2022-12-12 14:19:52,386 INFO L131 PetriNetUnfolder]: For 394/422 co-relation queries the response was YES. [2022-12-12 14:19:52,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53024 conditions, 26529 events. 16122/26529 cut-off events. For 394/422 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 176406 event pairs, 8985 based on Foata normal form. 281/9775 useless extension candidates. Maximal degree in co-relation 53015. Up to 15695 conditions per place. [2022-12-12 14:19:52,465 INFO L137 encePairwiseOnDemand]: 182/192 looper letters, 152 selfloop transitions, 3 changer transitions 85/264 dead transitions. [2022-12-12 14:19:52,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 264 transitions, 1119 flow [2022-12-12 14:19:52,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 14:19:52,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 14:19:52,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2022-12-12 14:19:52,466 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2022-12-12 14:19:52,467 INFO L175 Difference]: Start difference. First operand has 186 places, 201 transitions, 508 flow. Second operand 3 states and 300 transitions. [2022-12-12 14:19:52,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 264 transitions, 1119 flow [2022-12-12 14:19:52,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 264 transitions, 1119 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-12 14:19:52,470 INFO L231 Difference]: Finished difference. Result has 189 places, 127 transitions, 332 flow [2022-12-12 14:19:52,471 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=332, PETRI_PLACES=189, PETRI_TRANSITIONS=127} [2022-12-12 14:19:52,471 INFO L295 CegarLoopForPetriNet]: 181 programPoint places, 8 predicate places. [2022-12-12 14:19:52,471 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 127 transitions, 332 flow [2022-12-12 14:19:52,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:19:52,471 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:19:52,472 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:19:52,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 14:19:52,472 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 14:19:52,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:19:52,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1860208023, now seen corresponding path program 1 times [2022-12-12 14:19:52,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:19:52,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194076474] [2022-12-12 14:19:52,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:19:52,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:19:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:19:52,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:19:52,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:19:52,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194076474] [2022-12-12 14:19:52,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194076474] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:19:52,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:19:52,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 14:19:52,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694609356] [2022-12-12 14:19:52,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:19:52,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 14:19:52,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:19:52,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 14:19:52,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-12 14:19:52,985 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 192 [2022-12-12 14:19:52,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 127 transitions, 332 flow. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:19:52,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:19:52,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 192 [2022-12-12 14:19:52,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:19:53,989 INFO L130 PetriNetUnfolder]: 9642/15634 cut-off events. [2022-12-12 14:19:53,989 INFO L131 PetriNetUnfolder]: For 461/461 co-relation queries the response was YES. [2022-12-12 14:19:54,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31626 conditions, 15634 events. 9642/15634 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 91676 event pairs, 1763 based on Foata normal form. 34/6493 useless extension candidates. Maximal degree in co-relation 31615. Up to 13959 conditions per place. [2022-12-12 14:19:54,050 INFO L137 encePairwiseOnDemand]: 185/192 looper letters, 161 selfloop transitions, 12 changer transitions 5/194 dead transitions. [2022-12-12 14:19:54,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 194 transitions, 826 flow [2022-12-12 14:19:54,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 14:19:54,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 14:19:54,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 273 transitions. [2022-12-12 14:19:54,051 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.23697916666666666 [2022-12-12 14:19:54,051 INFO L175 Difference]: Start difference. First operand has 189 places, 127 transitions, 332 flow. Second operand 6 states and 273 transitions. [2022-12-12 14:19:54,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 194 transitions, 826 flow [2022-12-12 14:19:54,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 194 transitions, 818 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-12 14:19:54,057 INFO L231 Difference]: Finished difference. Result has 125 places, 121 transitions, 325 flow [2022-12-12 14:19:54,057 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=125, PETRI_TRANSITIONS=121} [2022-12-12 14:19:54,058 INFO L295 CegarLoopForPetriNet]: 181 programPoint places, -56 predicate places. [2022-12-12 14:19:54,058 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 121 transitions, 325 flow [2022-12-12 14:19:54,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:19:54,059 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:19:54,059 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:19:54,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 14:19:54,059 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)] === [2022-12-12 14:19:54,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:19:54,059 INFO L85 PathProgramCache]: Analyzing trace with hash 652538781, now seen corresponding path program 1 times [2022-12-12 14:19:54,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:19:54,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047384191] [2022-12-12 14:19:54,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:19:54,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:19:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:19:54,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:19:54,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:19:54,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047384191] [2022-12-12 14:19:54,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047384191] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:19:54,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:19:54,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 14:19:54,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562000151] [2022-12-12 14:19:54,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:19:54,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 14:19:54,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:19:54,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 14:19:54,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-12 14:19:54,626 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 192 [2022-12-12 14:19:54,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 121 transitions, 325 flow. Second operand has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:19:54,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:19:54,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 192 [2022-12-12 14:19:54,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:19:55,583 INFO L130 PetriNetUnfolder]: 9458/15335 cut-off events. [2022-12-12 14:19:55,583 INFO L131 PetriNetUnfolder]: For 576/576 co-relation queries the response was YES. [2022-12-12 14:19:55,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31115 conditions, 15335 events. 9458/15335 cut-off events. For 576/576 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 89721 event pairs, 7737 based on Foata normal form. 0/6387 useless extension candidates. Maximal degree in co-relation 31106. Up to 14472 conditions per place. [2022-12-12 14:19:55,634 INFO L137 encePairwiseOnDemand]: 180/192 looper letters, 104 selfloop transitions, 17 changer transitions 37/174 dead transitions. [2022-12-12 14:19:55,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 174 transitions, 756 flow [2022-12-12 14:19:55,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 14:19:55,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 14:19:55,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 310 transitions. [2022-12-12 14:19:55,636 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.17939814814814814 [2022-12-12 14:19:55,636 INFO L175 Difference]: Start difference. First operand has 125 places, 121 transitions, 325 flow. Second operand 9 states and 310 transitions. [2022-12-12 14:19:55,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 174 transitions, 756 flow [2022-12-12 14:19:55,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 174 transitions, 732 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-12 14:19:55,639 INFO L231 Difference]: Finished difference. Result has 127 places, 129 transitions, 385 flow [2022-12-12 14:19:55,639 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=385, PETRI_PLACES=127, PETRI_TRANSITIONS=129} [2022-12-12 14:19:55,640 INFO L295 CegarLoopForPetriNet]: 181 programPoint places, -54 predicate places. [2022-12-12 14:19:55,640 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 129 transitions, 385 flow [2022-12-12 14:19:55,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:19:55,640 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:19:55,640 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:19:55,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 14:19:55,640 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)] === [2022-12-12 14:19:55,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:19:55,641 INFO L85 PathProgramCache]: Analyzing trace with hash 449016303, now seen corresponding path program 1 times [2022-12-12 14:19:55,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:19:55,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806765969] [2022-12-12 14:19:55,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:19:55,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:19:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:20:02,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:20:02,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:20:02,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806765969] [2022-12-12 14:20:02,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806765969] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:20:02,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:20:02,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 14:20:02,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157888426] [2022-12-12 14:20:02,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:20:02,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-12 14:20:02,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:20:02,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-12 14:20:02,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-12 14:20:02,780 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 192 [2022-12-12 14:20:02,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 129 transitions, 385 flow. Second operand has 11 states, 11 states have (on average 18.272727272727273) internal successors, (201), 11 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:20:02,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:20:02,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 192 [2022-12-12 14:20:02,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:20:56,854 INFO L130 PetriNetUnfolder]: 11112/18084 cut-off events. [2022-12-12 14:20:56,854 INFO L131 PetriNetUnfolder]: For 573/573 co-relation queries the response was YES. [2022-12-12 14:20:56,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37125 conditions, 18084 events. 11112/18084 cut-off events. For 573/573 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 109926 event pairs, 3254 based on Foata normal form. 0/7568 useless extension candidates. Maximal degree in co-relation 37113. Up to 14259 conditions per place. [2022-12-12 14:20:56,907 INFO L137 encePairwiseOnDemand]: 179/192 looper letters, 159 selfloop transitions, 25 changer transitions 98/298 dead transitions. [2022-12-12 14:20:56,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 298 transitions, 1325 flow [2022-12-12 14:20:56,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 14:20:56,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 14:20:56,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 442 transitions. [2022-12-12 14:20:56,910 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.23020833333333332 [2022-12-12 14:20:56,910 INFO L175 Difference]: Start difference. First operand has 127 places, 129 transitions, 385 flow. Second operand 10 states and 442 transitions. [2022-12-12 14:20:56,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 298 transitions, 1325 flow [2022-12-12 14:20:56,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 298 transitions, 1313 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-12 14:20:56,918 INFO L231 Difference]: Finished difference. Result has 140 places, 137 transitions, 507 flow [2022-12-12 14:20:56,919 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=507, PETRI_PLACES=140, PETRI_TRANSITIONS=137} [2022-12-12 14:20:56,919 INFO L295 CegarLoopForPetriNet]: 181 programPoint places, -41 predicate places. [2022-12-12 14:20:56,919 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 137 transitions, 507 flow [2022-12-12 14:20:56,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.272727272727273) internal successors, (201), 11 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:20:56,920 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:20:56,920 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:20:56,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 14:20:56,920 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)] === [2022-12-12 14:20:56,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:20:56,920 INFO L85 PathProgramCache]: Analyzing trace with hash -69901593, now seen corresponding path program 2 times [2022-12-12 14:20:56,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:20:56,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499172496] [2022-12-12 14:20:56,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:20:56,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:20:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:20:57,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:20:57,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:20:57,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499172496] [2022-12-12 14:20:57,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499172496] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:20:57,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:20:57,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-12 14:20:57,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964829103] [2022-12-12 14:20:57,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:20:57,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 14:20:57,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:20:57,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 14:20:57,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-12 14:20:57,491 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 192 [2022-12-12 14:20:57,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 137 transitions, 507 flow. Second operand has 10 states, 10 states have (on average 18.4) internal successors, (184), 10 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:20:57,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:20:57,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 192 [2022-12-12 14:20:57,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:20:59,099 INFO L130 PetriNetUnfolder]: 12456/20354 cut-off events. [2022-12-12 14:20:59,100 INFO L131 PetriNetUnfolder]: For 1720/1720 co-relation queries the response was YES. [2022-12-12 14:20:59,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43011 conditions, 20354 events. 12456/20354 cut-off events. For 1720/1720 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 130002 event pairs, 2509 based on Foata normal form. 0/8473 useless extension candidates. Maximal degree in co-relation 42992. Up to 13748 conditions per place. [2022-12-12 14:20:59,239 INFO L137 encePairwiseOnDemand]: 180/192 looper letters, 152 selfloop transitions, 27 changer transitions 88/283 dead transitions. [2022-12-12 14:20:59,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 283 transitions, 1368 flow [2022-12-12 14:20:59,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 14:20:59,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 14:20:59,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 402 transitions. [2022-12-12 14:20:59,243 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2326388888888889 [2022-12-12 14:20:59,243 INFO L175 Difference]: Start difference. First operand has 140 places, 137 transitions, 507 flow. Second operand 9 states and 402 transitions. [2022-12-12 14:20:59,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 283 transitions, 1368 flow [2022-12-12 14:20:59,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 283 transitions, 1329 flow, removed 11 selfloop flow, removed 3 redundant places. [2022-12-12 14:20:59,258 INFO L231 Difference]: Finished difference. Result has 148 places, 141 transitions, 587 flow [2022-12-12 14:20:59,258 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=587, PETRI_PLACES=148, PETRI_TRANSITIONS=141} [2022-12-12 14:20:59,259 INFO L295 CegarLoopForPetriNet]: 181 programPoint places, -33 predicate places. [2022-12-12 14:20:59,259 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 141 transitions, 587 flow [2022-12-12 14:20:59,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.4) internal successors, (184), 10 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:20:59,259 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:20:59,260 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:20:59,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 14:20:59,260 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)] === [2022-12-12 14:20:59,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:20:59,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1243134699, now seen corresponding path program 3 times [2022-12-12 14:20:59,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:20:59,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397769234] [2022-12-12 14:20:59,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:20:59,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:20:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:20:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:20:59,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:20:59,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397769234] [2022-12-12 14:20:59,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397769234] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:20:59,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:20:59,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-12 14:20:59,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923104629] [2022-12-12 14:20:59,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:20:59,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 14:20:59,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:20:59,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 14:20:59,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-12 14:20:59,718 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 192 [2022-12-12 14:20:59,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 141 transitions, 587 flow. Second operand has 10 states, 10 states have (on average 18.4) internal successors, (184), 10 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:20:59,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:20:59,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 192 [2022-12-12 14:20:59,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:21:01,577 INFO L130 PetriNetUnfolder]: 13302/21815 cut-off events. [2022-12-12 14:21:01,577 INFO L131 PetriNetUnfolder]: For 2414/2414 co-relation queries the response was YES. [2022-12-12 14:21:01,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46620 conditions, 21815 events. 13302/21815 cut-off events. For 2414/2414 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 141170 event pairs, 3570 based on Foata normal form. 0/8960 useless extension candidates. Maximal degree in co-relation 46598. Up to 12842 conditions per place. [2022-12-12 14:21:01,721 INFO L137 encePairwiseOnDemand]: 180/192 looper letters, 158 selfloop transitions, 29 changer transitions 81/284 dead transitions. [2022-12-12 14:21:01,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 284 transitions, 1436 flow [2022-12-12 14:21:01,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 14:21:01,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 14:21:01,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 399 transitions. [2022-12-12 14:21:01,723 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2309027777777778 [2022-12-12 14:21:01,723 INFO L175 Difference]: Start difference. First operand has 148 places, 141 transitions, 587 flow. Second operand 9 states and 399 transitions. [2022-12-12 14:21:01,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 284 transitions, 1436 flow [2022-12-12 14:21:01,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 284 transitions, 1391 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-12-12 14:21:01,746 INFO L231 Difference]: Finished difference. Result has 153 places, 143 transitions, 648 flow [2022-12-12 14:21:01,746 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=648, PETRI_PLACES=153, PETRI_TRANSITIONS=143} [2022-12-12 14:21:01,747 INFO L295 CegarLoopForPetriNet]: 181 programPoint places, -28 predicate places. [2022-12-12 14:21:01,747 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 143 transitions, 648 flow [2022-12-12 14:21:01,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.4) internal successors, (184), 10 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:21:01,747 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:21:01,747 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:21:01,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 14:21:01,747 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)] === [2022-12-12 14:21:01,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:21:01,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1246133019, now seen corresponding path program 4 times [2022-12-12 14:21:01,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:21:01,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203195827] [2022-12-12 14:21:01,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:21:01,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:21:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:21:02,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:21:02,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:21:02,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203195827] [2022-12-12 14:21:02,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203195827] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:21:02,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:21:02,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-12 14:21:02,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667483049] [2022-12-12 14:21:02,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:21:02,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 14:21:02,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:21:02,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 14:21:02,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-12 14:21:02,269 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 192 [2022-12-12 14:21:02,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 143 transitions, 648 flow. Second operand has 10 states, 10 states have (on average 18.4) internal successors, (184), 10 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:21:02,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:21:02,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 192 [2022-12-12 14:21:02,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:21:04,088 INFO L130 PetriNetUnfolder]: 13206/21671 cut-off events. [2022-12-12 14:21:04,088 INFO L131 PetriNetUnfolder]: For 3130/3130 co-relation queries the response was YES. [2022-12-12 14:21:04,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46786 conditions, 21671 events. 13206/21671 cut-off events. For 3130/3130 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 140134 event pairs, 3541 based on Foata normal form. 0/8925 useless extension candidates. Maximal degree in co-relation 46762. Up to 12795 conditions per place. [2022-12-12 14:21:04,193 INFO L137 encePairwiseOnDemand]: 182/192 looper letters, 150 selfloop transitions, 29 changer transitions 87/281 dead transitions. [2022-12-12 14:21:04,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 281 transitions, 1467 flow [2022-12-12 14:21:04,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 14:21:04,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 14:21:04,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 396 transitions. [2022-12-12 14:21:04,198 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.22916666666666666 [2022-12-12 14:21:04,198 INFO L175 Difference]: Start difference. First operand has 153 places, 143 transitions, 648 flow. Second operand 9 states and 396 transitions. [2022-12-12 14:21:04,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 281 transitions, 1467 flow [2022-12-12 14:21:04,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 281 transitions, 1429 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-12-12 14:21:04,225 INFO L231 Difference]: Finished difference. Result has 153 places, 141 transitions, 660 flow [2022-12-12 14:21:04,225 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=660, PETRI_PLACES=153, PETRI_TRANSITIONS=141} [2022-12-12 14:21:04,225 INFO L295 CegarLoopForPetriNet]: 181 programPoint places, -28 predicate places. [2022-12-12 14:21:04,225 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 141 transitions, 660 flow [2022-12-12 14:21:04,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.4) internal successors, (184), 10 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:21:04,226 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:21:04,226 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] [2022-12-12 14:21:04,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 14:21:04,226 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 14:21:04,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:21:04,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1258959736, now seen corresponding path program 1 times [2022-12-12 14:21:04,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:21:04,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080160684] [2022-12-12 14:21:04,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:21:04,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:21:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:21:04,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:21:04,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:21:04,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080160684] [2022-12-12 14:21:04,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080160684] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:21:04,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:21:04,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 14:21:04,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140405704] [2022-12-12 14:21:04,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:21:04,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 14:21:04,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:21:04,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 14:21:04,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 14:21:04,288 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 192 [2022-12-12 14:21:04,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 141 transitions, 660 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:21:04,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:21:04,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 192 [2022-12-12 14:21:04,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:21:05,036 INFO L130 PetriNetUnfolder]: 7173/13051 cut-off events. [2022-12-12 14:21:05,036 INFO L131 PetriNetUnfolder]: For 2391/2391 co-relation queries the response was YES. [2022-12-12 14:21:05,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28703 conditions, 13051 events. 7173/13051 cut-off events. For 2391/2391 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 91161 event pairs, 1745 based on Foata normal form. 9/5547 useless extension candidates. Maximal degree in co-relation 28679. Up to 9564 conditions per place. [2022-12-12 14:21:05,127 INFO L137 encePairwiseOnDemand]: 176/192 looper letters, 92 selfloop transitions, 11 changer transitions 37/160 dead transitions. [2022-12-12 14:21:05,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 160 transitions, 996 flow [2022-12-12 14:21:05,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 14:21:05,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 14:21:05,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2022-12-12 14:21:05,129 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3229166666666667 [2022-12-12 14:21:05,129 INFO L175 Difference]: Start difference. First operand has 153 places, 141 transitions, 660 flow. Second operand 3 states and 186 transitions. [2022-12-12 14:21:05,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 160 transitions, 996 flow [2022-12-12 14:21:05,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 160 transitions, 938 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-12 14:21:05,144 INFO L231 Difference]: Finished difference. Result has 147 places, 111 transitions, 564 flow [2022-12-12 14:21:05,146 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=564, PETRI_PLACES=147, PETRI_TRANSITIONS=111} [2022-12-12 14:21:05,147 INFO L295 CegarLoopForPetriNet]: 181 programPoint places, -34 predicate places. [2022-12-12 14:21:05,147 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 111 transitions, 564 flow [2022-12-12 14:21:05,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:21:05,147 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:21:05,147 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] [2022-12-12 14:21:05,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 14:21:05,147 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 14:21:05,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:21:05,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1676631481, now seen corresponding path program 1 times [2022-12-12 14:21:05,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:21:05,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315489776] [2022-12-12 14:21:05,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:21:05,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:21:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:21:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:21:05,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:21:05,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315489776] [2022-12-12 14:21:05,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315489776] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:21:05,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:21:05,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-12 14:21:05,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793297360] [2022-12-12 14:21:05,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:21:05,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 14:21:05,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:21:05,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 14:21:05,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-12-12 14:21:05,914 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 192 [2022-12-12 14:21:05,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 111 transitions, 564 flow. Second operand has 14 states, 14 states have (on average 19.357142857142858) internal successors, (271), 14 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:21:05,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:21:05,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 192 [2022-12-12 14:21:05,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:21:06,999 INFO L130 PetriNetUnfolder]: 3638/6548 cut-off events. [2022-12-12 14:21:07,000 INFO L131 PetriNetUnfolder]: For 1532/1532 co-relation queries the response was YES. [2022-12-12 14:21:07,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15722 conditions, 6548 events. 3638/6548 cut-off events. For 1532/1532 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 38300 event pairs, 1822 based on Foata normal form. 0/3963 useless extension candidates. Maximal degree in co-relation 15698. Up to 3431 conditions per place. [2022-12-12 14:21:07,030 INFO L137 encePairwiseOnDemand]: 177/192 looper letters, 124 selfloop transitions, 35 changer transitions 95/268 dead transitions. [2022-12-12 14:21:07,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 268 transitions, 1457 flow [2022-12-12 14:21:07,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 14:21:07,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 14:21:07,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 473 transitions. [2022-12-12 14:21:07,033 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.17596726190476192 [2022-12-12 14:21:07,033 INFO L175 Difference]: Start difference. First operand has 147 places, 111 transitions, 564 flow. Second operand 14 states and 473 transitions. [2022-12-12 14:21:07,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 268 transitions, 1457 flow [2022-12-12 14:21:07,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 268 transitions, 1434 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-12 14:21:07,052 INFO L231 Difference]: Finished difference. Result has 136 places, 115 transitions, 683 flow [2022-12-12 14:21:07,052 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=683, PETRI_PLACES=136, PETRI_TRANSITIONS=115} [2022-12-12 14:21:07,053 INFO L295 CegarLoopForPetriNet]: 181 programPoint places, -45 predicate places. [2022-12-12 14:21:07,053 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 115 transitions, 683 flow [2022-12-12 14:21:07,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.357142857142858) internal successors, (271), 14 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:21:07,053 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:21:07,054 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] [2022-12-12 14:21:07,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-12 14:21:07,054 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 14:21:07,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:21:07,054 INFO L85 PathProgramCache]: Analyzing trace with hash -703528333, now seen corresponding path program 2 times [2022-12-12 14:21:07,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:21:07,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209515441] [2022-12-12 14:21:07,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:21:07,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:21:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:21:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:21:07,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:21:07,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209515441] [2022-12-12 14:21:07,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209515441] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:21:07,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:21:07,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-12 14:21:07,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229328667] [2022-12-12 14:21:07,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:21:07,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 14:21:07,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:21:07,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 14:21:07,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-12-12 14:21:07,945 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 192 [2022-12-12 14:21:07,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 115 transitions, 683 flow. Second operand has 14 states, 14 states have (on average 19.357142857142858) internal successors, (271), 14 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:21:07,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:21:07,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 192 [2022-12-12 14:21:07,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:21:09,292 INFO L130 PetriNetUnfolder]: 4438/7983 cut-off events. [2022-12-12 14:21:09,292 INFO L131 PetriNetUnfolder]: For 2131/2131 co-relation queries the response was YES. [2022-12-12 14:21:09,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19359 conditions, 7983 events. 4438/7983 cut-off events. For 2131/2131 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 48886 event pairs, 776 based on Foata normal form. 38/5092 useless extension candidates. Maximal degree in co-relation 19330. Up to 2997 conditions per place. [2022-12-12 14:21:09,337 INFO L137 encePairwiseOnDemand]: 175/192 looper letters, 143 selfloop transitions, 44 changer transitions 86/287 dead transitions. [2022-12-12 14:21:09,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 287 transitions, 1637 flow [2022-12-12 14:21:09,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-12 14:21:09,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-12 14:21:09,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 501 transitions. [2022-12-12 14:21:09,340 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.17395833333333333 [2022-12-12 14:21:09,340 INFO L175 Difference]: Start difference. First operand has 136 places, 115 transitions, 683 flow. Second operand 15 states and 501 transitions. [2022-12-12 14:21:09,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 287 transitions, 1637 flow [2022-12-12 14:21:09,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 287 transitions, 1566 flow, removed 6 selfloop flow, removed 8 redundant places. [2022-12-12 14:21:09,360 INFO L231 Difference]: Finished difference. Result has 142 places, 124 transitions, 788 flow [2022-12-12 14:21:09,360 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=788, PETRI_PLACES=142, PETRI_TRANSITIONS=124} [2022-12-12 14:21:09,362 INFO L295 CegarLoopForPetriNet]: 181 programPoint places, -39 predicate places. [2022-12-12 14:21:09,362 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 124 transitions, 788 flow [2022-12-12 14:21:09,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.357142857142858) internal successors, (271), 14 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:21:09,362 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:21:09,362 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] [2022-12-12 14:21:09,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-12 14:21:09,363 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 14:21:09,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:21:09,363 INFO L85 PathProgramCache]: Analyzing trace with hash -239595199, now seen corresponding path program 3 times [2022-12-12 14:21:09,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:21:09,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092533571] [2022-12-12 14:21:09,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:21:09,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:21:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:21:10,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:21:10,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:21:10,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092533571] [2022-12-12 14:21:10,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092533571] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:21:10,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:21:10,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-12 14:21:10,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786379330] [2022-12-12 14:21:10,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:21:10,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 14:21:10,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:21:10,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 14:21:10,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-12-12 14:21:10,099 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 192 [2022-12-12 14:21:10,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 124 transitions, 788 flow. Second operand has 14 states, 14 states have (on average 19.357142857142858) internal successors, (271), 14 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:21:10,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:21:10,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 192 [2022-12-12 14:21:10,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:21:11,395 INFO L130 PetriNetUnfolder]: 4556/8179 cut-off events. [2022-12-12 14:21:11,396 INFO L131 PetriNetUnfolder]: For 3370/3370 co-relation queries the response was YES. [2022-12-12 14:21:11,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21158 conditions, 8179 events. 4556/8179 cut-off events. For 3370/3370 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 50144 event pairs, 784 based on Foata normal form. 19/5204 useless extension candidates. Maximal degree in co-relation 21125. Up to 2968 conditions per place. [2022-12-12 14:21:11,448 INFO L137 encePairwiseOnDemand]: 175/192 looper letters, 144 selfloop transitions, 46 changer transitions 86/290 dead transitions. [2022-12-12 14:21:11,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 290 transitions, 1740 flow [2022-12-12 14:21:11,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-12 14:21:11,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-12 14:21:11,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 500 transitions. [2022-12-12 14:21:11,451 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.1736111111111111 [2022-12-12 14:21:11,451 INFO L175 Difference]: Start difference. First operand has 142 places, 124 transitions, 788 flow. Second operand 15 states and 500 transitions. [2022-12-12 14:21:11,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 290 transitions, 1740 flow [2022-12-12 14:21:11,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 290 transitions, 1681 flow, removed 4 selfloop flow, removed 10 redundant places. [2022-12-12 14:21:11,512 INFO L231 Difference]: Finished difference. Result has 148 places, 127 transitions, 872 flow [2022-12-12 14:21:11,512 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=872, PETRI_PLACES=148, PETRI_TRANSITIONS=127} [2022-12-12 14:21:11,513 INFO L295 CegarLoopForPetriNet]: 181 programPoint places, -33 predicate places. [2022-12-12 14:21:11,513 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 127 transitions, 872 flow [2022-12-12 14:21:11,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.357142857142858) internal successors, (271), 14 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:21:11,513 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:21:11,513 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] [2022-12-12 14:21:11,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-12 14:21:11,514 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 14:21:11,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:21:11,514 INFO L85 PathProgramCache]: Analyzing trace with hash -911915039, now seen corresponding path program 4 times [2022-12-12 14:21:11,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:21:11,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195561643] [2022-12-12 14:21:11,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:21:11,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:21:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:21:12,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:21:12,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:21:12,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195561643] [2022-12-12 14:21:12,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195561643] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:21:12,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:21:12,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-12 14:21:12,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625555749] [2022-12-12 14:21:12,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:21:12,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 14:21:12,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:21:12,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 14:21:12,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-12-12 14:21:12,469 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 192 [2022-12-12 14:21:12,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 127 transitions, 872 flow. Second operand has 14 states, 14 states have (on average 19.357142857142858) internal successors, (271), 14 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:21:12,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:21:12,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 192 [2022-12-12 14:21:12,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:21:13,576 INFO L130 PetriNetUnfolder]: 3961/7105 cut-off events. [2022-12-12 14:21:13,577 INFO L131 PetriNetUnfolder]: For 4571/4571 co-relation queries the response was YES. [2022-12-12 14:21:13,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19301 conditions, 7105 events. 3961/7105 cut-off events. For 4571/4571 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 41832 event pairs, 614 based on Foata normal form. 38/4533 useless extension candidates. Maximal degree in co-relation 19267. Up to 2305 conditions per place. [2022-12-12 14:21:13,614 INFO L137 encePairwiseOnDemand]: 178/192 looper letters, 124 selfloop transitions, 43 changer transitions 86/267 dead transitions. [2022-12-12 14:21:13,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 267 transitions, 1698 flow [2022-12-12 14:21:13,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 14:21:13,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 14:21:13,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 437 transitions. [2022-12-12 14:21:13,621 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.1750801282051282 [2022-12-12 14:21:13,621 INFO L175 Difference]: Start difference. First operand has 148 places, 127 transitions, 872 flow. Second operand 13 states and 437 transitions. [2022-12-12 14:21:13,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 267 transitions, 1698 flow [2022-12-12 14:21:13,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 267 transitions, 1610 flow, removed 7 selfloop flow, removed 12 redundant places. [2022-12-12 14:21:13,665 INFO L231 Difference]: Finished difference. Result has 150 places, 128 transitions, 912 flow [2022-12-12 14:21:13,665 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=912, PETRI_PLACES=150, PETRI_TRANSITIONS=128} [2022-12-12 14:21:13,666 INFO L295 CegarLoopForPetriNet]: 181 programPoint places, -31 predicate places. [2022-12-12 14:21:13,666 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 128 transitions, 912 flow [2022-12-12 14:21:13,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.357142857142858) internal successors, (271), 14 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:21:13,669 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:21:13,669 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] [2022-12-12 14:21:13,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-12 14:21:13,670 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 14:21:13,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:21:13,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1349913773, now seen corresponding path program 1 times [2022-12-12 14:21:13,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:21:13,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775123236] [2022-12-12 14:21:13,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:21:13,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:21:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:21:15,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:21:15,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:21:15,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775123236] [2022-12-12 14:21:15,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775123236] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:21:15,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:21:15,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-12 14:21:15,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851918917] [2022-12-12 14:21:15,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:21:15,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-12 14:21:15,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:21:15,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-12 14:21:15,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-12-12 14:21:15,152 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 192 [2022-12-12 14:21:15,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 128 transitions, 912 flow. Second operand has 16 states, 16 states have (on average 19.125) internal successors, (306), 16 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:21:15,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:21:15,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 192 [2022-12-12 14:21:15,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:21:16,994 INFO L130 PetriNetUnfolder]: 5039/9108 cut-off events. [2022-12-12 14:21:16,994 INFO L131 PetriNetUnfolder]: For 6186/6186 co-relation queries the response was YES. [2022-12-12 14:21:17,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24351 conditions, 9108 events. 5039/9108 cut-off events. For 6186/6186 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 56791 event pairs, 2179 based on Foata normal form. 0/5721 useless extension candidates. Maximal degree in co-relation 24316. Up to 5331 conditions per place. [2022-12-12 14:21:17,047 INFO L137 encePairwiseOnDemand]: 175/192 looper letters, 178 selfloop transitions, 37 changer transitions 88/317 dead transitions. [2022-12-12 14:21:17,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 317 transitions, 2019 flow [2022-12-12 14:21:17,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 14:21:17,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 14:21:17,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 504 transitions. [2022-12-12 14:21:17,051 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.1875 [2022-12-12 14:21:17,051 INFO L175 Difference]: Start difference. First operand has 150 places, 128 transitions, 912 flow. Second operand 14 states and 504 transitions. [2022-12-12 14:21:17,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 317 transitions, 2019 flow [2022-12-12 14:21:17,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 317 transitions, 1947 flow, removed 7 selfloop flow, removed 10 redundant places. [2022-12-12 14:21:17,205 INFO L231 Difference]: Finished difference. Result has 158 places, 134 transitions, 1003 flow [2022-12-12 14:21:17,205 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1003, PETRI_PLACES=158, PETRI_TRANSITIONS=134} [2022-12-12 14:21:17,205 INFO L295 CegarLoopForPetriNet]: 181 programPoint places, -23 predicate places. [2022-12-12 14:21:17,205 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 134 transitions, 1003 flow [2022-12-12 14:21:17,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.125) internal successors, (306), 16 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:21:17,206 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:21:17,206 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] [2022-12-12 14:21:17,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-12 14:21:17,206 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)] === [2022-12-12 14:21:17,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:21:17,207 INFO L85 PathProgramCache]: Analyzing trace with hash 2056681663, now seen corresponding path program 2 times [2022-12-12 14:21:17,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:21:17,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709911552] [2022-12-12 14:21:17,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:21:17,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:21:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:21:18,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:21:18,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:21:18,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709911552] [2022-12-12 14:21:18,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709911552] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:21:18,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:21:18,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-12 14:21:18,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863205540] [2022-12-12 14:21:18,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:21:18,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-12 14:21:18,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:21:18,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-12 14:21:18,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-12 14:21:18,241 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 192 [2022-12-12 14:21:18,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 134 transitions, 1003 flow. Second operand has 16 states, 16 states have (on average 19.125) internal successors, (306), 16 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:21:18,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:21:18,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 192 [2022-12-12 14:21:18,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:21:19,723 INFO L130 PetriNetUnfolder]: 5418/9780 cut-off events. [2022-12-12 14:21:19,723 INFO L131 PetriNetUnfolder]: For 5854/5854 co-relation queries the response was YES. [2022-12-12 14:21:19,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25668 conditions, 9780 events. 5418/9780 cut-off events. For 5854/5854 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 61706 event pairs, 1837 based on Foata normal form. 23/6221 useless extension candidates. Maximal degree in co-relation 25629. Up to 3958 conditions per place. [2022-12-12 14:21:19,793 INFO L137 encePairwiseOnDemand]: 176/192 looper letters, 177 selfloop transitions, 42 changer transitions 51/284 dead transitions. [2022-12-12 14:21:19,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 284 transitions, 1914 flow [2022-12-12 14:21:19,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 14:21:19,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 14:21:19,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 464 transitions. [2022-12-12 14:21:19,795 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.17261904761904762 [2022-12-12 14:21:19,795 INFO L175 Difference]: Start difference. First operand has 158 places, 134 transitions, 1003 flow. Second operand 14 states and 464 transitions. [2022-12-12 14:21:19,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 284 transitions, 1914 flow [2022-12-12 14:21:19,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 284 transitions, 1880 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-12-12 14:21:19,843 INFO L231 Difference]: Finished difference. Result has 167 places, 139 transitions, 1109 flow [2022-12-12 14:21:19,843 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1109, PETRI_PLACES=167, PETRI_TRANSITIONS=139} [2022-12-12 14:21:19,844 INFO L295 CegarLoopForPetriNet]: 181 programPoint places, -14 predicate places. [2022-12-12 14:21:19,844 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 139 transitions, 1109 flow [2022-12-12 14:21:19,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.125) internal successors, (306), 16 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:21:19,844 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:21:19,844 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] [2022-12-12 14:21:19,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-12 14:21:19,844 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)] === [2022-12-12 14:21:19,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:21:19,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1883915539, now seen corresponding path program 3 times [2022-12-12 14:21:19,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:21:19,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162644214] [2022-12-12 14:21:19,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:21:19,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:21:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:21:20,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:21:20,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:21:20,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162644214] [2022-12-12 14:21:20,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162644214] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:21:20,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:21:20,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-12 14:21:20,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010933068] [2022-12-12 14:21:20,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:21:20,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-12 14:21:20,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:21:20,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-12 14:21:20,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-12-12 14:21:20,956 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 192 [2022-12-12 14:21:20,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 139 transitions, 1109 flow. Second operand has 16 states, 16 states have (on average 19.125) internal successors, (306), 16 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:21:20,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:21:20,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 192 [2022-12-12 14:21:20,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:21:22,572 INFO L130 PetriNetUnfolder]: 6045/10868 cut-off events. [2022-12-12 14:21:22,573 INFO L131 PetriNetUnfolder]: For 7151/7151 co-relation queries the response was YES. [2022-12-12 14:21:22,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29065 conditions, 10868 events. 6045/10868 cut-off events. For 7151/7151 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 70736 event pairs, 997 based on Foata normal form. 23/6874 useless extension candidates. Maximal degree in co-relation 29021. Up to 3293 conditions per place. [2022-12-12 14:21:22,667 INFO L137 encePairwiseOnDemand]: 175/192 looper letters, 168 selfloop transitions, 52 changer transitions 55/289 dead transitions. [2022-12-12 14:21:22,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 289 transitions, 2040 flow [2022-12-12 14:21:22,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 14:21:22,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 14:21:22,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 462 transitions. [2022-12-12 14:21:22,669 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.171875 [2022-12-12 14:21:22,669 INFO L175 Difference]: Start difference. First operand has 167 places, 139 transitions, 1109 flow. Second operand 14 states and 462 transitions. [2022-12-12 14:21:22,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 289 transitions, 2040 flow [2022-12-12 14:21:22,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 289 transitions, 1970 flow, removed 4 selfloop flow, removed 9 redundant places. [2022-12-12 14:21:22,725 INFO L231 Difference]: Finished difference. Result has 174 places, 143 transitions, 1208 flow [2022-12-12 14:21:22,725 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1208, PETRI_PLACES=174, PETRI_TRANSITIONS=143} [2022-12-12 14:21:22,726 INFO L295 CegarLoopForPetriNet]: 181 programPoint places, -7 predicate places. [2022-12-12 14:21:22,726 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 143 transitions, 1208 flow [2022-12-12 14:21:22,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.125) internal successors, (306), 16 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:21:22,726 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:21:22,726 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] [2022-12-12 14:21:22,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-12 14:21:22,726 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)] === [2022-12-12 14:21:22,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:21:22,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1573996661, now seen corresponding path program 4 times [2022-12-12 14:21:22,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:21:22,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309690116] [2022-12-12 14:21:22,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:21:22,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:21:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2022-12-12 14:32:25,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-12 14:32:25,570 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:152) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:848) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:776) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:284) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-12 14:32:25,572 INFO L158 Benchmark]: Toolchain (without parser) took 772432.05ms. Allocated memory was 184.5MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 159.2MB in the beginning and 628.4MB in the end (delta: -469.2MB). Peak memory consumption was 5.4GB. Max. memory is 8.0GB. [2022-12-12 14:32:25,572 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 184.5MB. Free memory was 161.0MB in the beginning and 160.9MB in the end (delta: 72.7kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 14:32:25,573 INFO L158 Benchmark]: CACSL2BoogieTranslator took 520.24ms. Allocated memory is still 184.5MB. Free memory was 159.0MB in the beginning and 128.6MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2022-12-12 14:32:25,574 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.26ms. Allocated memory is still 184.5MB. Free memory was 128.6MB in the beginning and 125.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-12 14:32:25,574 INFO L158 Benchmark]: Boogie Preprocessor took 48.57ms. Allocated memory is still 184.5MB. Free memory was 125.5MB in the beginning and 123.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 14:32:25,574 INFO L158 Benchmark]: RCFGBuilder took 586.76ms. Allocated memory is still 184.5MB. Free memory was 123.4MB in the beginning and 99.8MB in the end (delta: 23.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2022-12-12 14:32:25,574 INFO L158 Benchmark]: TraceAbstraction took 771209.81ms. Allocated memory was 184.5MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 98.7MB in the beginning and 628.4MB in the end (delta: -529.7MB). Peak memory consumption was 5.3GB. Max. memory is 8.0GB. [2022-12-12 14:32:25,575 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks [2022-12-12 14:32:25,579 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 Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 184.5MB. Free memory was 161.0MB in the beginning and 160.9MB in the end (delta: 72.7kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 520.24ms. Allocated memory is still 184.5MB. Free memory was 159.0MB in the beginning and 128.6MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 62.26ms. Allocated memory is still 184.5MB. Free memory was 128.6MB in the beginning and 125.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.57ms. Allocated memory is still 184.5MB. Free memory was 125.5MB in the beginning and 123.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 586.76ms. Allocated memory is still 184.5MB. Free memory was 123.4MB in the beginning and 99.8MB in the end (delta: 23.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * TraceAbstraction took 771209.81ms. Allocated memory was 184.5MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 98.7MB in the beginning and 628.4MB in the end (delta: -529.7MB). Peak memory consumption was 5.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.3s, 245 PlacesBefore, 181 PlacesAfterwards, 253 TransitionsBefore, 192 TransitionsAfterwards, 15600 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 65 TrivialYvCompositions, 123 ConcurrentYvCompositions, 9 ChoiceCompositions, 216 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 31776, independent: 31143, independent conditional: 31143, independent unconditional: 0, dependent: 633, dependent conditional: 633, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 31776, independent: 31143, independent conditional: 0, independent unconditional: 31143, dependent: 633, dependent conditional: 0, dependent unconditional: 633, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 31776, independent: 31143, independent conditional: 0, independent unconditional: 31143, dependent: 633, dependent conditional: 0, dependent unconditional: 633, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 31776, independent: 31143, independent conditional: 0, independent unconditional: 31143, dependent: 633, dependent conditional: 0, dependent unconditional: 633, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 16865, independent: 16662, independent conditional: 0, independent unconditional: 16662, dependent: 203, dependent conditional: 0, dependent unconditional: 203, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 16865, independent: 16609, independent conditional: 0, independent unconditional: 16609, dependent: 256, dependent conditional: 0, dependent unconditional: 256, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 256, independent: 53, independent conditional: 0, independent unconditional: 53, dependent: 203, dependent conditional: 0, dependent unconditional: 203, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 283, independent: 41, independent conditional: 0, independent unconditional: 41, dependent: 242, dependent conditional: 0, dependent unconditional: 242, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 31776, independent: 14481, independent conditional: 0, independent unconditional: 14481, dependent: 430, dependent conditional: 0, dependent unconditional: 430, unknown: 16865, unknown conditional: 0, unknown unconditional: 16865] , Statistics on independence cache: Total cache size (in pairs): 42626, Positive cache size: 42423, Positive conditional cache size: 0, Positive unconditional cache size: 42423, Negative cache size: 203, Negative conditional cache size: 0, Negative unconditional cache size: 203, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown