/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 19:31:03,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 19:31:03,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 19:31:03,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 19:31:03,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 19:31:03,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 19:31:03,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 19:31:03,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 19:31:03,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 19:31:03,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 19:31:03,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 19:31:03,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 19:31:03,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 19:31:03,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 19:31:03,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 19:31:03,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 19:31:03,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 19:31:03,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 19:31:03,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 19:31:03,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 19:31:03,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 19:31:03,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 19:31:03,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 19:31:03,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 19:31:03,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 19:31:03,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 19:31:03,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 19:31:03,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 19:31:03,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 19:31:03,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 19:31:03,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 19:31:03,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 19:31:03,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 19:31:03,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 19:31:03,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 19:31:03,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 19:31:03,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 19:31:03,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 19:31:03,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 19:31:03,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 19:31:03,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 19:31:03,717 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-05 19:31:03,741 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 19:31:03,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 19:31:03,742 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 19:31:03,742 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 19:31:03,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 19:31:03,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 19:31:03,743 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 19:31:03,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 19:31:03,744 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 19:31:03,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 19:31:03,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 19:31:03,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 19:31:03,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 19:31:03,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 19:31:03,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 19:31:03,745 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 19:31:03,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 19:31:03,745 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 19:31:03,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 19:31:03,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 19:31:03,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 19:31:03,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 19:31:03,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 19:31:03,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 19:31:03,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 19:31:03,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 19:31:03,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 19:31:03,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 19:31:03,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 19:31:03,746 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-05 19:31:03,747 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 19:31:03,747 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 19:31:04,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 19:31:04,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 19:31:04,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 19:31:04,039 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 19:31:04,040 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 19:31:04,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c [2022-12-05 19:31:05,016 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 19:31:05,179 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 19:31:05,179 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c [2022-12-05 19:31:05,184 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23d8bc267/d9262f1a5a4f445291244e272415490e/FLAGf9bae1811 [2022-12-05 19:31:05,194 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23d8bc267/d9262f1a5a4f445291244e272415490e [2022-12-05 19:31:05,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 19:31:05,196 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 19:31:05,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 19:31:05,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 19:31:05,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 19:31:05,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 07:31:05" (1/1) ... [2022-12-05 19:31:05,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@770bd264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:31:05, skipping insertion in model container [2022-12-05 19:31:05,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 07:31:05" (1/1) ... [2022-12-05 19:31:05,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 19:31:05,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 19:31:05,321 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:31:05,322 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:31:05,323 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:31:05,324 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:31:05,325 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:31:05,326 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:31:05,326 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:31:05,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:31:05,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:31:05,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:31:05,335 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2022-12-05 19:31:05,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 19:31:05,348 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 19:31:05,357 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:31:05,358 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:31:05,358 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:31:05,359 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:31:05,359 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:31:05,360 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:31:05,360 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:31:05,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:31:05,362 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:31:05,362 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:31:05,366 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2022-12-05 19:31:05,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 19:31:05,378 INFO L208 MainTranslator]: Completed translation [2022-12-05 19:31:05,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:31:05 WrapperNode [2022-12-05 19:31:05,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 19:31:05,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 19:31:05,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 19:31:05,380 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 19:31:05,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:31:05" (1/1) ... [2022-12-05 19:31:05,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:31:05" (1/1) ... [2022-12-05 19:31:05,408 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 257 [2022-12-05 19:31:05,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 19:31:05,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 19:31:05,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 19:31:05,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 19:31:05,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:31:05" (1/1) ... [2022-12-05 19:31:05,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:31:05" (1/1) ... [2022-12-05 19:31:05,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:31:05" (1/1) ... [2022-12-05 19:31:05,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:31:05" (1/1) ... [2022-12-05 19:31:05,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:31:05" (1/1) ... [2022-12-05 19:31:05,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:31:05" (1/1) ... [2022-12-05 19:31:05,426 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:31:05" (1/1) ... [2022-12-05 19:31:05,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:31:05" (1/1) ... [2022-12-05 19:31:05,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 19:31:05,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 19:31:05,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 19:31:05,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 19:31:05,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:31:05" (1/1) ... [2022-12-05 19:31:05,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 19:31:05,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:31:05,464 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) [2022-12-05 19:31:05,471 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 [2022-12-05 19:31:05,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 19:31:05,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 19:31:05,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 19:31:05,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 19:31:05,492 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 19:31:05,492 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 19:31:05,492 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 19:31:05,492 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 19:31:05,492 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 19:31:05,492 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 19:31:05,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 19:31:05,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 19:31:05,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 19:31:05,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-05 19:31:05,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 19:31:05,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 19:31:05,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 19:31:05,494 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 19:31:05,563 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 19:31:05,564 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 19:31:05,911 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 19:31:06,030 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 19:31:06,030 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-05 19:31:06,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 07:31:06 BoogieIcfgContainer [2022-12-05 19:31:06,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 19:31:06,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 19:31:06,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 19:31:06,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 19:31:06,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 07:31:05" (1/3) ... [2022-12-05 19:31:06,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc402bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 07:31:06, skipping insertion in model container [2022-12-05 19:31:06,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:31:05" (2/3) ... [2022-12-05 19:31:06,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc402bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 07:31:06, skipping insertion in model container [2022-12-05 19:31:06,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 07:31:06" (3/3) ... [2022-12-05 19:31:06,039 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2022-12-05 19:31:06,051 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 19:31:06,051 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 19:31:06,051 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 19:31:06,107 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-05 19:31:06,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 206 transitions, 436 flow [2022-12-05 19:31:06,226 INFO L130 PetriNetUnfolder]: 18/203 cut-off events. [2022-12-05 19:31:06,226 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 19:31:06,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 203 events. 18/203 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 122 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 165. Up to 3 conditions per place. [2022-12-05 19:31:06,231 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 206 transitions, 436 flow [2022-12-05 19:31:06,241 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 193 transitions, 404 flow [2022-12-05 19:31:06,253 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 19:31:06,258 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;@105787b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 19:31:06,258 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-05 19:31:06,329 INFO L130 PetriNetUnfolder]: 18/192 cut-off events. [2022-12-05 19:31:06,330 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 19:31:06,330 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:06,330 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:06,331 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 1 more)] === [2022-12-05 19:31:06,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:06,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1824186022, now seen corresponding path program 1 times [2022-12-05 19:31:06,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:06,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027938441] [2022-12-05 19:31:06,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:06,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:06,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:31:06,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:06,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027938441] [2022-12-05 19:31:06,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027938441] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:06,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:06,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 19:31:06,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744408394] [2022-12-05 19:31:06,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:06,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-05 19:31:06,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:06,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-05 19:31:06,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-05 19:31:06,630 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 206 [2022-12-05 19:31:06,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 193 transitions, 404 flow. Second operand has 2 states, 2 states have (on average 185.5) internal successors, (371), 2 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:06,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:06,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 206 [2022-12-05 19:31:06,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:06,703 INFO L130 PetriNetUnfolder]: 71/384 cut-off events. [2022-12-05 19:31:06,703 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-12-05 19:31:06,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529 conditions, 384 events. 71/384 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1178 event pairs, 38 based on Foata normal form. 60/403 useless extension candidates. Maximal degree in co-relation 353. Up to 106 conditions per place. [2022-12-05 19:31:06,710 INFO L137 encePairwiseOnDemand]: 193/206 looper letters, 11 selfloop transitions, 0 changer transitions 6/180 dead transitions. [2022-12-05 19:31:06,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 180 transitions, 400 flow [2022-12-05 19:31:06,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-05 19:31:06,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-05 19:31:06,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 386 transitions. [2022-12-05 19:31:06,724 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9368932038834952 [2022-12-05 19:31:06,726 INFO L175 Difference]: Start difference. First operand has 185 places, 193 transitions, 404 flow. Second operand 2 states and 386 transitions. [2022-12-05 19:31:06,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 180 transitions, 400 flow [2022-12-05 19:31:06,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 180 transitions, 388 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-05 19:31:06,732 INFO L231 Difference]: Finished difference. Result has 180 places, 174 transitions, 354 flow [2022-12-05 19:31:06,734 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=354, PETRI_PLACES=180, PETRI_TRANSITIONS=174} [2022-12-05 19:31:06,737 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, -5 predicate places. [2022-12-05 19:31:06,737 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 174 transitions, 354 flow [2022-12-05 19:31:06,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 185.5) internal successors, (371), 2 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:06,738 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:06,738 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:06,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 19:31:06,739 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:06,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:06,739 INFO L85 PathProgramCache]: Analyzing trace with hash 19794773, now seen corresponding path program 1 times [2022-12-05 19:31:06,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:06,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590564612] [2022-12-05 19:31:06,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:06,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:07,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:31:07,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:07,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590564612] [2022-12-05 19:31:07,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590564612] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:07,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:07,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 19:31:07,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692288196] [2022-12-05 19:31:07,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:07,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 19:31:07,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:07,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 19:31:07,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-05 19:31:07,169 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 206 [2022-12-05 19:31:07,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 174 transitions, 354 flow. Second operand has 6 states, 6 states have (on average 159.66666666666666) internal successors, (958), 6 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:07,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:07,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 206 [2022-12-05 19:31:07,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:07,339 INFO L130 PetriNetUnfolder]: 73/457 cut-off events. [2022-12-05 19:31:07,339 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-05 19:31:07,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 457 events. 73/457 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1423 event pairs, 38 based on Foata normal form. 11/429 useless extension candidates. Maximal degree in co-relation 625. Up to 118 conditions per place. [2022-12-05 19:31:07,343 INFO L137 encePairwiseOnDemand]: 194/206 looper letters, 33 selfloop transitions, 8 changer transitions 17/195 dead transitions. [2022-12-05 19:31:07,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 195 transitions, 515 flow [2022-12-05 19:31:07,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 19:31:07,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 19:31:07,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1456 transitions. [2022-12-05 19:31:07,346 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.785329018338727 [2022-12-05 19:31:07,346 INFO L175 Difference]: Start difference. First operand has 180 places, 174 transitions, 354 flow. Second operand 9 states and 1456 transitions. [2022-12-05 19:31:07,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 195 transitions, 515 flow [2022-12-05 19:31:07,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 195 transitions, 515 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 19:31:07,352 INFO L231 Difference]: Finished difference. Result has 184 places, 175 transitions, 386 flow [2022-12-05 19:31:07,353 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=386, PETRI_PLACES=184, PETRI_TRANSITIONS=175} [2022-12-05 19:31:07,354 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, -1 predicate places. [2022-12-05 19:31:07,354 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 175 transitions, 386 flow [2022-12-05 19:31:07,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.66666666666666) internal successors, (958), 6 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:07,355 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:07,355 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:07,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 19:31:07,355 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:07,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:07,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1310905821, now seen corresponding path program 1 times [2022-12-05 19:31:07,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:07,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591687221] [2022-12-05 19:31:07,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:07,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:07,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:31:07,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:07,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591687221] [2022-12-05 19:31:07,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591687221] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:07,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:07,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 19:31:07,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227762889] [2022-12-05 19:31:07,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:07,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 19:31:07,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:07,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 19:31:07,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-05 19:31:07,567 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 206 [2022-12-05 19:31:07,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 175 transitions, 386 flow. Second operand has 6 states, 6 states have (on average 160.33333333333334) internal successors, (962), 6 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:07,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:07,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 206 [2022-12-05 19:31:07,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:07,700 INFO L130 PetriNetUnfolder]: 92/497 cut-off events. [2022-12-05 19:31:07,700 INFO L131 PetriNetUnfolder]: For 87/111 co-relation queries the response was YES. [2022-12-05 19:31:07,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 799 conditions, 497 events. 92/497 cut-off events. For 87/111 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1794 event pairs, 50 based on Foata normal form. 13/462 useless extension candidates. Maximal degree in co-relation 793. Up to 115 conditions per place. [2022-12-05 19:31:07,703 INFO L137 encePairwiseOnDemand]: 197/206 looper letters, 36 selfloop transitions, 6 changer transitions 8/187 dead transitions. [2022-12-05 19:31:07,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 187 transitions, 520 flow [2022-12-05 19:31:07,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 19:31:07,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 19:31:07,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1136 transitions. [2022-12-05 19:31:07,708 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7877947295423023 [2022-12-05 19:31:07,708 INFO L175 Difference]: Start difference. First operand has 184 places, 175 transitions, 386 flow. Second operand 7 states and 1136 transitions. [2022-12-05 19:31:07,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 187 transitions, 520 flow [2022-12-05 19:31:07,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 187 transitions, 506 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-05 19:31:07,714 INFO L231 Difference]: Finished difference. Result has 185 places, 176 transitions, 396 flow [2022-12-05 19:31:07,715 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=396, PETRI_PLACES=185, PETRI_TRANSITIONS=176} [2022-12-05 19:31:07,716 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 0 predicate places. [2022-12-05 19:31:07,716 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 176 transitions, 396 flow [2022-12-05 19:31:07,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.33333333333334) internal successors, (962), 6 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:07,717 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:07,717 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:07,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 19:31:07,717 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:07,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:07,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2058352915, now seen corresponding path program 1 times [2022-12-05 19:31:07,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:07,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112851827] [2022-12-05 19:31:07,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:07,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:07,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:07,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:07,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112851827] [2022-12-05 19:31:07,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112851827] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:07,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:07,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 19:31:07,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188651356] [2022-12-05 19:31:07,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:07,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:31:07,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:07,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:31:07,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 19:31:07,940 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 206 [2022-12-05 19:31:07,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 176 transitions, 396 flow. Second operand has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:07,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:07,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 206 [2022-12-05 19:31:07,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:08,005 INFO L130 PetriNetUnfolder]: 82/423 cut-off events. [2022-12-05 19:31:08,006 INFO L131 PetriNetUnfolder]: For 80/90 co-relation queries the response was YES. [2022-12-05 19:31:08,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 423 events. 82/423 cut-off events. For 80/90 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1282 event pairs, 17 based on Foata normal form. 6/399 useless extension candidates. Maximal degree in co-relation 674. Up to 88 conditions per place. [2022-12-05 19:31:08,009 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 19 selfloop transitions, 2 changer transitions 0/182 dead transitions. [2022-12-05 19:31:08,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 182 transitions, 460 flow [2022-12-05 19:31:08,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:31:08,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:31:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 553 transitions. [2022-12-05 19:31:08,011 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8948220064724919 [2022-12-05 19:31:08,011 INFO L175 Difference]: Start difference. First operand has 185 places, 176 transitions, 396 flow. Second operand 3 states and 553 transitions. [2022-12-05 19:31:08,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 182 transitions, 460 flow [2022-12-05 19:31:08,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 182 transitions, 450 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-05 19:31:08,014 INFO L231 Difference]: Finished difference. Result has 183 places, 177 transitions, 400 flow [2022-12-05 19:31:08,014 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=183, PETRI_TRANSITIONS=177} [2022-12-05 19:31:08,015 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, -2 predicate places. [2022-12-05 19:31:08,015 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 177 transitions, 400 flow [2022-12-05 19:31:08,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:08,016 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:08,016 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:08,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 19:31:08,016 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:08,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:08,019 INFO L85 PathProgramCache]: Analyzing trace with hash -376647831, now seen corresponding path program 2 times [2022-12-05 19:31:08,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:08,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176542381] [2022-12-05 19:31:08,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:08,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:09,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:09,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176542381] [2022-12-05 19:31:09,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176542381] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:09,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:09,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:09,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818252297] [2022-12-05 19:31:09,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:09,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:09,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:09,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:09,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:09,272 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:09,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 177 transitions, 400 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:09,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:09,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:09,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:10,026 INFO L130 PetriNetUnfolder]: 1226/2651 cut-off events. [2022-12-05 19:31:10,026 INFO L131 PetriNetUnfolder]: For 996/1008 co-relation queries the response was YES. [2022-12-05 19:31:10,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5634 conditions, 2651 events. 1226/2651 cut-off events. For 996/1008 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 17475 event pairs, 350 based on Foata normal form. 1/2390 useless extension candidates. Maximal degree in co-relation 5625. Up to 983 conditions per place. [2022-12-05 19:31:10,039 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 125 selfloop transitions, 41 changer transitions 5/290 dead transitions. [2022-12-05 19:31:10,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 290 transitions, 1100 flow [2022-12-05 19:31:10,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 19:31:10,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 19:31:10,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2622 transitions. [2022-12-05 19:31:10,044 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6699029126213593 [2022-12-05 19:31:10,044 INFO L175 Difference]: Start difference. First operand has 183 places, 177 transitions, 400 flow. Second operand 19 states and 2622 transitions. [2022-12-05 19:31:10,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 290 transitions, 1100 flow [2022-12-05 19:31:10,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 290 transitions, 1051 flow, removed 21 selfloop flow, removed 2 redundant places. [2022-12-05 19:31:10,050 INFO L231 Difference]: Finished difference. Result has 208 places, 215 transitions, 620 flow [2022-12-05 19:31:10,050 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=620, PETRI_PLACES=208, PETRI_TRANSITIONS=215} [2022-12-05 19:31:10,051 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 23 predicate places. [2022-12-05 19:31:10,051 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 215 transitions, 620 flow [2022-12-05 19:31:10,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:10,052 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:10,052 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:10,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 19:31:10,053 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:10,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:10,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1667503813, now seen corresponding path program 3 times [2022-12-05 19:31:10,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:10,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469113468] [2022-12-05 19:31:10,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:10,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:11,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:11,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:11,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469113468] [2022-12-05 19:31:11,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469113468] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:11,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:11,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:11,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113190510] [2022-12-05 19:31:11,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:11,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:11,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:11,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:11,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:11,018 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:11,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 215 transitions, 620 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:11,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:11,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:11,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:11,703 INFO L130 PetriNetUnfolder]: 1313/2875 cut-off events. [2022-12-05 19:31:11,704 INFO L131 PetriNetUnfolder]: For 1655/1667 co-relation queries the response was YES. [2022-12-05 19:31:11,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6964 conditions, 2875 events. 1313/2875 cut-off events. For 1655/1667 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 19738 event pairs, 329 based on Foata normal form. 1/2749 useless extension candidates. Maximal degree in co-relation 6947. Up to 1124 conditions per place. [2022-12-05 19:31:11,722 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 135 selfloop transitions, 54 changer transitions 5/313 dead transitions. [2022-12-05 19:31:11,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 313 transitions, 1418 flow [2022-12-05 19:31:11,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:31:11,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:31:11,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2490 transitions. [2022-12-05 19:31:11,726 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6715210355987055 [2022-12-05 19:31:11,726 INFO L175 Difference]: Start difference. First operand has 208 places, 215 transitions, 620 flow. Second operand 18 states and 2490 transitions. [2022-12-05 19:31:11,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 313 transitions, 1418 flow [2022-12-05 19:31:11,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 313 transitions, 1406 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-12-05 19:31:11,736 INFO L231 Difference]: Finished difference. Result has 228 places, 242 transitions, 936 flow [2022-12-05 19:31:11,736 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=936, PETRI_PLACES=228, PETRI_TRANSITIONS=242} [2022-12-05 19:31:11,737 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 43 predicate places. [2022-12-05 19:31:11,737 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 242 transitions, 936 flow [2022-12-05 19:31:11,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:11,738 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:11,738 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:11,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 19:31:11,738 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:11,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:11,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1425318919, now seen corresponding path program 4 times [2022-12-05 19:31:11,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:11,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89913492] [2022-12-05 19:31:11,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:11,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:11,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:11,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:11,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89913492] [2022-12-05 19:31:11,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89913492] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:11,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:11,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 19:31:11,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281599743] [2022-12-05 19:31:11,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:11,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:31:11,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:11,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:31:11,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 19:31:11,921 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 206 [2022-12-05 19:31:11,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 242 transitions, 936 flow. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:11,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:11,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 206 [2022-12-05 19:31:11,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:12,052 INFO L130 PetriNetUnfolder]: 280/1044 cut-off events. [2022-12-05 19:31:12,052 INFO L131 PetriNetUnfolder]: For 1471/1580 co-relation queries the response was YES. [2022-12-05 19:31:12,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2480 conditions, 1044 events. 280/1044 cut-off events. For 1471/1580 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6249 event pairs, 86 based on Foata normal form. 16/999 useless extension candidates. Maximal degree in co-relation 2454. Up to 310 conditions per place. [2022-12-05 19:31:12,060 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 22 selfloop transitions, 5 changer transitions 0/242 dead transitions. [2022-12-05 19:31:12,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 242 transitions, 974 flow [2022-12-05 19:31:12,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:31:12,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:31:12,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 545 transitions. [2022-12-05 19:31:12,062 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8818770226537217 [2022-12-05 19:31:12,062 INFO L175 Difference]: Start difference. First operand has 228 places, 242 transitions, 936 flow. Second operand 3 states and 545 transitions. [2022-12-05 19:31:12,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 242 transitions, 974 flow [2022-12-05 19:31:12,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 242 transitions, 901 flow, removed 19 selfloop flow, removed 9 redundant places. [2022-12-05 19:31:12,072 INFO L231 Difference]: Finished difference. Result has 220 places, 240 transitions, 862 flow [2022-12-05 19:31:12,072 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=862, PETRI_PLACES=220, PETRI_TRANSITIONS=240} [2022-12-05 19:31:12,073 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 35 predicate places. [2022-12-05 19:31:12,073 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 240 transitions, 862 flow [2022-12-05 19:31:12,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:12,073 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:12,073 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:12,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 19:31:12,074 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:12,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:12,074 INFO L85 PathProgramCache]: Analyzing trace with hash 123542393, now seen corresponding path program 5 times [2022-12-05 19:31:12,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:12,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346639884] [2022-12-05 19:31:12,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:12,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:12,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:12,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:12,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346639884] [2022-12-05 19:31:12,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346639884] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:12,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:12,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:12,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719165126] [2022-12-05 19:31:12,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:12,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:12,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:12,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:12,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:12,990 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:12,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 240 transitions, 862 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:12,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:12,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:12,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:13,746 INFO L130 PetriNetUnfolder]: 1019/2436 cut-off events. [2022-12-05 19:31:13,746 INFO L131 PetriNetUnfolder]: For 3343/3366 co-relation queries the response was YES. [2022-12-05 19:31:13,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6696 conditions, 2436 events. 1019/2436 cut-off events. For 3343/3366 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17270 event pairs, 274 based on Foata normal form. 5/2336 useless extension candidates. Maximal degree in co-relation 6671. Up to 1162 conditions per place. [2022-12-05 19:31:13,762 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 141 selfloop transitions, 59 changer transitions 5/324 dead transitions. [2022-12-05 19:31:13,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 324 transitions, 1730 flow [2022-12-05 19:31:13,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-05 19:31:13,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-05 19:31:13,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2746 transitions. [2022-12-05 19:31:13,768 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.666504854368932 [2022-12-05 19:31:13,769 INFO L175 Difference]: Start difference. First operand has 220 places, 240 transitions, 862 flow. Second operand 20 states and 2746 transitions. [2022-12-05 19:31:13,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 324 transitions, 1730 flow [2022-12-05 19:31:13,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 324 transitions, 1698 flow, removed 13 selfloop flow, removed 1 redundant places. [2022-12-05 19:31:13,782 INFO L231 Difference]: Finished difference. Result has 246 places, 255 transitions, 1133 flow [2022-12-05 19:31:13,783 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1133, PETRI_PLACES=246, PETRI_TRANSITIONS=255} [2022-12-05 19:31:13,784 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 61 predicate places. [2022-12-05 19:31:13,785 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 255 transitions, 1133 flow [2022-12-05 19:31:13,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:13,785 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:13,786 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:13,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 19:31:13,786 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:13,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:13,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1188132817, now seen corresponding path program 6 times [2022-12-05 19:31:13,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:13,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974588042] [2022-12-05 19:31:13,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:13,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:14,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:14,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:14,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974588042] [2022-12-05 19:31:14,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974588042] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:14,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:14,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:14,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145807724] [2022-12-05 19:31:14,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:14,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:14,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:14,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:14,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:14,611 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:14,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 255 transitions, 1133 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:14,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:14,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:14,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:15,412 INFO L130 PetriNetUnfolder]: 1064/2490 cut-off events. [2022-12-05 19:31:15,412 INFO L131 PetriNetUnfolder]: For 5056/5060 co-relation queries the response was YES. [2022-12-05 19:31:15,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7446 conditions, 2490 events. 1064/2490 cut-off events. For 5056/5060 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 17262 event pairs, 497 based on Foata normal form. 2/2405 useless extension candidates. Maximal degree in co-relation 7413. Up to 1301 conditions per place. [2022-12-05 19:31:15,433 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 151 selfloop transitions, 57 changer transitions 5/332 dead transitions. [2022-12-05 19:31:15,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 332 transitions, 2008 flow [2022-12-05 19:31:15,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-05 19:31:15,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-05 19:31:15,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2746 transitions. [2022-12-05 19:31:15,438 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.666504854368932 [2022-12-05 19:31:15,438 INFO L175 Difference]: Start difference. First operand has 246 places, 255 transitions, 1133 flow. Second operand 20 states and 2746 transitions. [2022-12-05 19:31:15,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 332 transitions, 2008 flow [2022-12-05 19:31:15,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 332 transitions, 1870 flow, removed 36 selfloop flow, removed 13 redundant places. [2022-12-05 19:31:15,470 INFO L231 Difference]: Finished difference. Result has 255 places, 263 transitions, 1225 flow [2022-12-05 19:31:15,470 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1225, PETRI_PLACES=255, PETRI_TRANSITIONS=263} [2022-12-05 19:31:15,472 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 70 predicate places. [2022-12-05 19:31:15,472 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 263 transitions, 1225 flow [2022-12-05 19:31:15,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:15,473 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:15,473 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:15,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-05 19:31:15,473 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:15,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:15,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1933809885, now seen corresponding path program 7 times [2022-12-05 19:31:15,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:15,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688311796] [2022-12-05 19:31:15,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:15,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:16,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:16,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:16,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688311796] [2022-12-05 19:31:16,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688311796] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:16,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:16,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:16,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029107603] [2022-12-05 19:31:16,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:16,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:16,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:16,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:16,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:16,387 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:16,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 263 transitions, 1225 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:16,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:16,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:16,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:17,287 INFO L130 PetriNetUnfolder]: 1177/2927 cut-off events. [2022-12-05 19:31:17,287 INFO L131 PetriNetUnfolder]: For 8063/8085 co-relation queries the response was YES. [2022-12-05 19:31:17,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8882 conditions, 2927 events. 1177/2927 cut-off events. For 8063/8085 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 22560 event pairs, 271 based on Foata normal form. 14/2824 useless extension candidates. Maximal degree in co-relation 8846. Up to 1266 conditions per place. [2022-12-05 19:31:17,305 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 155 selfloop transitions, 68 changer transitions 5/347 dead transitions. [2022-12-05 19:31:17,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 347 transitions, 2231 flow [2022-12-05 19:31:17,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-05 19:31:17,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-05 19:31:17,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2751 transitions. [2022-12-05 19:31:17,311 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6677184466019418 [2022-12-05 19:31:17,311 INFO L175 Difference]: Start difference. First operand has 255 places, 263 transitions, 1225 flow. Second operand 20 states and 2751 transitions. [2022-12-05 19:31:17,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 347 transitions, 2231 flow [2022-12-05 19:31:17,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 347 transitions, 2096 flow, removed 25 selfloop flow, removed 14 redundant places. [2022-12-05 19:31:17,336 INFO L231 Difference]: Finished difference. Result has 265 places, 274 transitions, 1404 flow [2022-12-05 19:31:17,337 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1404, PETRI_PLACES=265, PETRI_TRANSITIONS=274} [2022-12-05 19:31:17,338 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 80 predicate places. [2022-12-05 19:31:17,338 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 274 transitions, 1404 flow [2022-12-05 19:31:17,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:17,339 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:17,339 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:17,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-05 19:31:17,340 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:17,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:17,341 INFO L85 PathProgramCache]: Analyzing trace with hash 2138648221, now seen corresponding path program 8 times [2022-12-05 19:31:17,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:17,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586345775] [2022-12-05 19:31:17,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:17,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:18,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:18,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:18,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586345775] [2022-12-05 19:31:18,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586345775] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:18,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:18,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:18,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202730662] [2022-12-05 19:31:18,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:18,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:18,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:18,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:18,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:18,170 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:18,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 274 transitions, 1404 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:18,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:18,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:18,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:19,069 INFO L130 PetriNetUnfolder]: 1225/3045 cut-off events. [2022-12-05 19:31:19,070 INFO L131 PetriNetUnfolder]: For 10939/10959 co-relation queries the response was YES. [2022-12-05 19:31:19,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9911 conditions, 3045 events. 1225/3045 cut-off events. For 10939/10959 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 23611 event pairs, 465 based on Foata normal form. 9/2917 useless extension candidates. Maximal degree in co-relation 9869. Up to 1683 conditions per place. [2022-12-05 19:31:19,090 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 169 selfloop transitions, 53 changer transitions 5/346 dead transitions. [2022-12-05 19:31:19,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 346 transitions, 2399 flow [2022-12-05 19:31:19,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:31:19,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:31:19,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2476 transitions. [2022-12-05 19:31:19,093 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6677454153182308 [2022-12-05 19:31:19,093 INFO L175 Difference]: Start difference. First operand has 265 places, 274 transitions, 1404 flow. Second operand 18 states and 2476 transitions. [2022-12-05 19:31:19,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 346 transitions, 2399 flow [2022-12-05 19:31:19,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 346 transitions, 2214 flow, removed 49 selfloop flow, removed 13 redundant places. [2022-12-05 19:31:19,118 INFO L231 Difference]: Finished difference. Result has 275 places, 289 transitions, 1594 flow [2022-12-05 19:31:19,118 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1233, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1594, PETRI_PLACES=275, PETRI_TRANSITIONS=289} [2022-12-05 19:31:19,118 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 90 predicate places. [2022-12-05 19:31:19,119 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 289 transitions, 1594 flow [2022-12-05 19:31:19,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:19,119 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:19,120 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:19,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-05 19:31:19,120 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:19,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:19,120 INFO L85 PathProgramCache]: Analyzing trace with hash 300297623, now seen corresponding path program 9 times [2022-12-05 19:31:19,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:19,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32412964] [2022-12-05 19:31:19,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:19,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:19,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:19,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:19,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32412964] [2022-12-05 19:31:19,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32412964] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:19,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:19,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:19,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631999417] [2022-12-05 19:31:19,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:19,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:19,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:19,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:19,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:19,940 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:19,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 289 transitions, 1594 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:19,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:19,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:19,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:20,791 INFO L130 PetriNetUnfolder]: 1275/3161 cut-off events. [2022-12-05 19:31:20,792 INFO L131 PetriNetUnfolder]: For 14207/14221 co-relation queries the response was YES. [2022-12-05 19:31:20,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10758 conditions, 3161 events. 1275/3161 cut-off events. For 14207/14221 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 25019 event pairs, 377 based on Foata normal form. 12/3046 useless extension candidates. Maximal degree in co-relation 10709. Up to 1586 conditions per place. [2022-12-05 19:31:20,821 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 163 selfloop transitions, 74 changer transitions 5/361 dead transitions. [2022-12-05 19:31:20,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 361 transitions, 2657 flow [2022-12-05 19:31:20,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-05 19:31:20,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-05 19:31:20,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2744 transitions. [2022-12-05 19:31:20,824 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6660194174757281 [2022-12-05 19:31:20,824 INFO L175 Difference]: Start difference. First operand has 275 places, 289 transitions, 1594 flow. Second operand 20 states and 2744 transitions. [2022-12-05 19:31:20,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 361 transitions, 2657 flow [2022-12-05 19:31:20,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 361 transitions, 2504 flow, removed 60 selfloop flow, removed 8 redundant places. [2022-12-05 19:31:20,861 INFO L231 Difference]: Finished difference. Result has 289 places, 298 transitions, 1783 flow [2022-12-05 19:31:20,861 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1783, PETRI_PLACES=289, PETRI_TRANSITIONS=298} [2022-12-05 19:31:20,862 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 104 predicate places. [2022-12-05 19:31:20,862 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 298 transitions, 1783 flow [2022-12-05 19:31:20,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:20,863 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:20,863 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:20,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-05 19:31:20,863 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:20,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:20,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1751144417, now seen corresponding path program 10 times [2022-12-05 19:31:20,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:20,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110510070] [2022-12-05 19:31:20,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:20,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:21,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:21,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:21,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110510070] [2022-12-05 19:31:21,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110510070] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:21,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:21,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:21,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177018753] [2022-12-05 19:31:21,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:21,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:21,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:21,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:21,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:21,582 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:21,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 298 transitions, 1783 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:21,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:21,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:21,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:22,476 INFO L130 PetriNetUnfolder]: 1287/3114 cut-off events. [2022-12-05 19:31:22,476 INFO L131 PetriNetUnfolder]: For 15963/15971 co-relation queries the response was YES. [2022-12-05 19:31:22,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11129 conditions, 3114 events. 1287/3114 cut-off events. For 15963/15971 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 23916 event pairs, 583 based on Foata normal form. 1/2987 useless extension candidates. Maximal degree in co-relation 11076. Up to 1744 conditions per place. [2022-12-05 19:31:22,502 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 175 selfloop transitions, 61 changer transitions 5/360 dead transitions. [2022-12-05 19:31:22,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 360 transitions, 2756 flow [2022-12-05 19:31:22,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 19:31:22,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 19:31:22,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2603 transitions. [2022-12-05 19:31:22,505 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6650485436893204 [2022-12-05 19:31:22,505 INFO L175 Difference]: Start difference. First operand has 289 places, 298 transitions, 1783 flow. Second operand 19 states and 2603 transitions. [2022-12-05 19:31:22,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 360 transitions, 2756 flow [2022-12-05 19:31:22,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 360 transitions, 2573 flow, removed 44 selfloop flow, removed 16 redundant places. [2022-12-05 19:31:22,546 INFO L231 Difference]: Finished difference. Result has 293 places, 303 transitions, 1790 flow [2022-12-05 19:31:22,547 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1604, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1790, PETRI_PLACES=293, PETRI_TRANSITIONS=303} [2022-12-05 19:31:22,548 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 108 predicate places. [2022-12-05 19:31:22,548 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 303 transitions, 1790 flow [2022-12-05 19:31:22,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:22,548 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:22,549 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:22,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-05 19:31:22,549 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:22,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:22,550 INFO L85 PathProgramCache]: Analyzing trace with hash 714898477, now seen corresponding path program 11 times [2022-12-05 19:31:22,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:22,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864467509] [2022-12-05 19:31:22,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:22,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:23,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:23,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:23,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864467509] [2022-12-05 19:31:23,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864467509] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:23,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:23,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:23,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596557190] [2022-12-05 19:31:23,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:23,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:23,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:23,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:23,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:23,367 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:23,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 303 transitions, 1790 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:23,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:23,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:23,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:24,386 INFO L130 PetriNetUnfolder]: 1436/3515 cut-off events. [2022-12-05 19:31:24,387 INFO L131 PetriNetUnfolder]: For 18786/18794 co-relation queries the response was YES. [2022-12-05 19:31:24,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12745 conditions, 3515 events. 1436/3515 cut-off events. For 18786/18794 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 28340 event pairs, 728 based on Foata normal form. 1/3372 useless extension candidates. Maximal degree in co-relation 12690. Up to 1913 conditions per place. [2022-12-05 19:31:24,423 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 207 selfloop transitions, 56 changer transitions 5/387 dead transitions. [2022-12-05 19:31:24,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 387 transitions, 3068 flow [2022-12-05 19:31:24,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-05 19:31:24,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-05 19:31:24,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2750 transitions. [2022-12-05 19:31:24,426 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6674757281553398 [2022-12-05 19:31:24,426 INFO L175 Difference]: Start difference. First operand has 293 places, 303 transitions, 1790 flow. Second operand 20 states and 2750 transitions. [2022-12-05 19:31:24,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 387 transitions, 3068 flow [2022-12-05 19:31:24,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 387 transitions, 2962 flow, removed 15 selfloop flow, removed 12 redundant places. [2022-12-05 19:31:24,472 INFO L231 Difference]: Finished difference. Result has 306 places, 317 transitions, 2062 flow [2022-12-05 19:31:24,473 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2062, PETRI_PLACES=306, PETRI_TRANSITIONS=317} [2022-12-05 19:31:24,474 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 121 predicate places. [2022-12-05 19:31:24,474 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 317 transitions, 2062 flow [2022-12-05 19:31:24,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:24,474 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:24,475 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:24,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-05 19:31:24,475 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:24,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:24,475 INFO L85 PathProgramCache]: Analyzing trace with hash 486901569, now seen corresponding path program 12 times [2022-12-05 19:31:24,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:24,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641650144] [2022-12-05 19:31:24,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:24,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:25,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:25,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:25,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641650144] [2022-12-05 19:31:25,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641650144] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:25,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:25,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:25,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710955686] [2022-12-05 19:31:25,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:25,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:25,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:25,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:25,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:25,322 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:25,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 317 transitions, 2062 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:25,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:25,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:25,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:26,395 INFO L130 PetriNetUnfolder]: 1514/3680 cut-off events. [2022-12-05 19:31:26,395 INFO L131 PetriNetUnfolder]: For 25992/26000 co-relation queries the response was YES. [2022-12-05 19:31:26,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14411 conditions, 3680 events. 1514/3680 cut-off events. For 25992/26000 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 29935 event pairs, 788 based on Foata normal form. 1/3531 useless extension candidates. Maximal degree in co-relation 14349. Up to 2121 conditions per place. [2022-12-05 19:31:26,432 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 209 selfloop transitions, 60 changer transitions 5/393 dead transitions. [2022-12-05 19:31:26,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 393 transitions, 3354 flow [2022-12-05 19:31:26,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-05 19:31:26,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-05 19:31:26,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2745 transitions. [2022-12-05 19:31:26,435 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6662621359223301 [2022-12-05 19:31:26,435 INFO L175 Difference]: Start difference. First operand has 306 places, 317 transitions, 2062 flow. Second operand 20 states and 2745 transitions. [2022-12-05 19:31:26,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 393 transitions, 3354 flow [2022-12-05 19:31:26,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 393 transitions, 3118 flow, removed 91 selfloop flow, removed 11 redundant places. [2022-12-05 19:31:26,505 INFO L231 Difference]: Finished difference. Result has 319 places, 332 transitions, 2249 flow [2022-12-05 19:31:26,506 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1852, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2249, PETRI_PLACES=319, PETRI_TRANSITIONS=332} [2022-12-05 19:31:26,506 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 134 predicate places. [2022-12-05 19:31:26,506 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 332 transitions, 2249 flow [2022-12-05 19:31:26,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:26,507 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:26,507 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:26,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-05 19:31:26,507 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:26,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:26,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1423648911, now seen corresponding path program 13 times [2022-12-05 19:31:26,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:26,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041421552] [2022-12-05 19:31:26,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:26,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:27,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:27,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:27,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041421552] [2022-12-05 19:31:27,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041421552] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:27,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:27,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:27,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255080238] [2022-12-05 19:31:27,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:27,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:27,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:27,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:27,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:27,248 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:27,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 332 transitions, 2249 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:27,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:27,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:27,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:28,277 INFO L130 PetriNetUnfolder]: 1565/3942 cut-off events. [2022-12-05 19:31:28,277 INFO L131 PetriNetUnfolder]: For 30958/30980 co-relation queries the response was YES. [2022-12-05 19:31:28,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15467 conditions, 3942 events. 1565/3942 cut-off events. For 30958/30980 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 33559 event pairs, 605 based on Foata normal form. 14/3786 useless extension candidates. Maximal degree in co-relation 15399. Up to 2215 conditions per place. [2022-12-05 19:31:28,312 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 222 selfloop transitions, 59 changer transitions 5/405 dead transitions. [2022-12-05 19:31:28,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 405 transitions, 3558 flow [2022-12-05 19:31:28,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-05 19:31:28,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-05 19:31:28,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2749 transitions. [2022-12-05 19:31:28,315 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6672330097087379 [2022-12-05 19:31:28,315 INFO L175 Difference]: Start difference. First operand has 319 places, 332 transitions, 2249 flow. Second operand 20 states and 2749 transitions. [2022-12-05 19:31:28,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 405 transitions, 3558 flow [2022-12-05 19:31:28,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 405 transitions, 3307 flow, removed 84 selfloop flow, removed 13 redundant places. [2022-12-05 19:31:28,383 INFO L231 Difference]: Finished difference. Result has 328 places, 339 transitions, 2303 flow [2022-12-05 19:31:28,383 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2005, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2303, PETRI_PLACES=328, PETRI_TRANSITIONS=339} [2022-12-05 19:31:28,384 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 143 predicate places. [2022-12-05 19:31:28,384 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 339 transitions, 2303 flow [2022-12-05 19:31:28,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:28,385 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:28,385 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:28,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-05 19:31:28,385 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:28,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:28,386 INFO L85 PathProgramCache]: Analyzing trace with hash 520471373, now seen corresponding path program 14 times [2022-12-05 19:31:28,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:28,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820774060] [2022-12-05 19:31:28,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:28,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:29,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:29,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:29,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820774060] [2022-12-05 19:31:29,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820774060] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:29,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:29,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:29,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604662561] [2022-12-05 19:31:29,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:29,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:29,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:29,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:29,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:29,041 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:29,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 339 transitions, 2303 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:29,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:29,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:29,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:29,856 INFO L130 PetriNetUnfolder]: 1575/3871 cut-off events. [2022-12-05 19:31:29,856 INFO L131 PetriNetUnfolder]: For 33094/33101 co-relation queries the response was YES. [2022-12-05 19:31:29,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15631 conditions, 3871 events. 1575/3871 cut-off events. For 33094/33101 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 32127 event pairs, 840 based on Foata normal form. 5/3717 useless extension candidates. Maximal degree in co-relation 15559. Up to 2280 conditions per place. [2022-12-05 19:31:29,895 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 212 selfloop transitions, 54 changer transitions 5/390 dead transitions. [2022-12-05 19:31:29,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 390 transitions, 3422 flow [2022-12-05 19:31:29,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:31:29,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:31:29,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2459 transitions. [2022-12-05 19:31:29,902 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6631607335490831 [2022-12-05 19:31:29,902 INFO L175 Difference]: Start difference. First operand has 328 places, 339 transitions, 2303 flow. Second operand 18 states and 2459 transitions. [2022-12-05 19:31:29,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 390 transitions, 3422 flow [2022-12-05 19:31:29,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 390 transitions, 3217 flow, removed 56 selfloop flow, removed 15 redundant places. [2022-12-05 19:31:29,981 INFO L231 Difference]: Finished difference. Result has 332 places, 347 transitions, 2379 flow [2022-12-05 19:31:29,981 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2379, PETRI_PLACES=332, PETRI_TRANSITIONS=347} [2022-12-05 19:31:29,981 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 147 predicate places. [2022-12-05 19:31:29,981 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 347 transitions, 2379 flow [2022-12-05 19:31:29,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:29,987 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:29,987 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:29,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-05 19:31:29,987 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:29,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:29,987 INFO L85 PathProgramCache]: Analyzing trace with hash -689505675, now seen corresponding path program 15 times [2022-12-05 19:31:29,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:29,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396667476] [2022-12-05 19:31:29,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:29,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:30,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:30,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:30,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396667476] [2022-12-05 19:31:30,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396667476] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:30,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:30,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:30,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968560381] [2022-12-05 19:31:30,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:30,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:30,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:30,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:30,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:30,672 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:30,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 347 transitions, 2379 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:30,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:30,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:30,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:31,728 INFO L130 PetriNetUnfolder]: 1625/4019 cut-off events. [2022-12-05 19:31:31,728 INFO L131 PetriNetUnfolder]: For 36354/36361 co-relation queries the response was YES. [2022-12-05 19:31:31,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16347 conditions, 4019 events. 1625/4019 cut-off events. For 36354/36361 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 33922 event pairs, 827 based on Foata normal form. 5/3859 useless extension candidates. Maximal degree in co-relation 16272. Up to 2274 conditions per place. [2022-12-05 19:31:31,763 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 228 selfloop transitions, 67 changer transitions 5/419 dead transitions. [2022-12-05 19:31:31,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 419 transitions, 3745 flow [2022-12-05 19:31:31,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-05 19:31:31,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-05 19:31:31,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2745 transitions. [2022-12-05 19:31:31,765 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6662621359223301 [2022-12-05 19:31:31,766 INFO L175 Difference]: Start difference. First operand has 332 places, 347 transitions, 2379 flow. Second operand 20 states and 2745 transitions. [2022-12-05 19:31:31,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 419 transitions, 3745 flow [2022-12-05 19:31:31,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 419 transitions, 3573 flow, removed 53 selfloop flow, removed 11 redundant places. [2022-12-05 19:31:31,845 INFO L231 Difference]: Finished difference. Result has 344 places, 356 transitions, 2553 flow [2022-12-05 19:31:31,846 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2209, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2553, PETRI_PLACES=344, PETRI_TRANSITIONS=356} [2022-12-05 19:31:31,846 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 159 predicate places. [2022-12-05 19:31:31,846 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 356 transitions, 2553 flow [2022-12-05 19:31:31,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:31,847 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:31,847 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:31,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-05 19:31:31,847 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:31,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:31,847 INFO L85 PathProgramCache]: Analyzing trace with hash 133733155, now seen corresponding path program 16 times [2022-12-05 19:31:31,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:31,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488614887] [2022-12-05 19:31:31,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:31,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:32,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:32,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:32,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488614887] [2022-12-05 19:31:32,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488614887] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:32,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:32,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:32,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141905866] [2022-12-05 19:31:32,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:32,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:32,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:32,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:32,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:32,492 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:32,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 356 transitions, 2553 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:32,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:32,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:32,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:33,518 INFO L130 PetriNetUnfolder]: 1652/4061 cut-off events. [2022-12-05 19:31:33,518 INFO L131 PetriNetUnfolder]: For 40562/40566 co-relation queries the response was YES. [2022-12-05 19:31:33,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17182 conditions, 4061 events. 1652/4061 cut-off events. For 40562/40566 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 34252 event pairs, 879 based on Foata normal form. 2/3893 useless extension candidates. Maximal degree in co-relation 17102. Up to 2390 conditions per place. [2022-12-05 19:31:33,561 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 232 selfloop transitions, 67 changer transitions 5/423 dead transitions. [2022-12-05 19:31:33,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 423 transitions, 3898 flow [2022-12-05 19:31:33,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 19:31:33,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 19:31:33,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2608 transitions. [2022-12-05 19:31:33,564 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6663260091977516 [2022-12-05 19:31:33,564 INFO L175 Difference]: Start difference. First operand has 344 places, 356 transitions, 2553 flow. Second operand 19 states and 2608 transitions. [2022-12-05 19:31:33,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 423 transitions, 3898 flow [2022-12-05 19:31:33,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 423 transitions, 3656 flow, removed 71 selfloop flow, removed 14 redundant places. [2022-12-05 19:31:33,644 INFO L231 Difference]: Finished difference. Result has 350 places, 366 transitions, 2612 flow [2022-12-05 19:31:33,644 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2320, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2612, PETRI_PLACES=350, PETRI_TRANSITIONS=366} [2022-12-05 19:31:33,645 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 165 predicate places. [2022-12-05 19:31:33,645 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 366 transitions, 2612 flow [2022-12-05 19:31:33,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:33,645 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:33,645 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:33,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-05 19:31:33,646 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:33,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:33,647 INFO L85 PathProgramCache]: Analyzing trace with hash 918641045, now seen corresponding path program 17 times [2022-12-05 19:31:33,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:33,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279685667] [2022-12-05 19:31:33,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:33,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:34,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:34,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:34,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279685667] [2022-12-05 19:31:34,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279685667] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:34,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:34,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:34,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124943423] [2022-12-05 19:31:34,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:34,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:34,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:34,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:34,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:34,320 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:34,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 366 transitions, 2612 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:34,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:34,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:34,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:35,334 INFO L130 PetriNetUnfolder]: 1694/4193 cut-off events. [2022-12-05 19:31:35,334 INFO L131 PetriNetUnfolder]: For 42511/42514 co-relation queries the response was YES. [2022-12-05 19:31:35,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17790 conditions, 4193 events. 1694/4193 cut-off events. For 42511/42514 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 35796 event pairs, 903 based on Foata normal form. 1/4020 useless extension candidates. Maximal degree in co-relation 17707. Up to 2404 conditions per place. [2022-12-05 19:31:35,373 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 241 selfloop transitions, 62 changer transitions 5/427 dead transitions. [2022-12-05 19:31:35,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 427 transitions, 3976 flow [2022-12-05 19:31:35,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:31:35,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:31:35,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2473 transitions. [2022-12-05 19:31:35,375 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6669363538295577 [2022-12-05 19:31:35,375 INFO L175 Difference]: Start difference. First operand has 350 places, 366 transitions, 2612 flow. Second operand 18 states and 2473 transitions. [2022-12-05 19:31:35,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 427 transitions, 3976 flow [2022-12-05 19:31:35,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 427 transitions, 3835 flow, removed 27 selfloop flow, removed 12 redundant places. [2022-12-05 19:31:35,456 INFO L231 Difference]: Finished difference. Result has 358 places, 372 transitions, 2824 flow [2022-12-05 19:31:35,456 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2477, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2824, PETRI_PLACES=358, PETRI_TRANSITIONS=372} [2022-12-05 19:31:35,457 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 173 predicate places. [2022-12-05 19:31:35,457 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 372 transitions, 2824 flow [2022-12-05 19:31:35,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:35,457 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:35,458 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:35,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-05 19:31:35,458 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:35,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:35,458 INFO L85 PathProgramCache]: Analyzing trace with hash -2121646829, now seen corresponding path program 18 times [2022-12-05 19:31:35,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:35,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318444745] [2022-12-05 19:31:35,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:35,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:36,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:36,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:36,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318444745] [2022-12-05 19:31:36,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318444745] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:36,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:36,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:36,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146348515] [2022-12-05 19:31:36,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:36,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:36,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:36,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:36,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:36,194 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:36,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 372 transitions, 2824 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:36,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:36,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:36,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:37,254 INFO L130 PetriNetUnfolder]: 1745/4339 cut-off events. [2022-12-05 19:31:37,255 INFO L131 PetriNetUnfolder]: For 53123/53127 co-relation queries the response was YES. [2022-12-05 19:31:37,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19017 conditions, 4339 events. 1745/4339 cut-off events. For 53123/53127 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 37609 event pairs, 932 based on Foata normal form. 2/4158 useless extension candidates. Maximal degree in co-relation 18931. Up to 2499 conditions per place. [2022-12-05 19:31:37,293 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 250 selfloop transitions, 61 changer transitions 5/435 dead transitions. [2022-12-05 19:31:37,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 435 transitions, 4255 flow [2022-12-05 19:31:37,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:31:37,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:31:37,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2475 transitions. [2022-12-05 19:31:37,296 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6674757281553398 [2022-12-05 19:31:37,296 INFO L175 Difference]: Start difference. First operand has 358 places, 372 transitions, 2824 flow. Second operand 18 states and 2475 transitions. [2022-12-05 19:31:37,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 435 transitions, 4255 flow [2022-12-05 19:31:37,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 435 transitions, 4000 flow, removed 85 selfloop flow, removed 13 redundant places. [2022-12-05 19:31:37,403 INFO L231 Difference]: Finished difference. Result has 365 places, 379 transitions, 2936 flow [2022-12-05 19:31:37,404 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2580, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2936, PETRI_PLACES=365, PETRI_TRANSITIONS=379} [2022-12-05 19:31:37,404 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 180 predicate places. [2022-12-05 19:31:37,404 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 379 transitions, 2936 flow [2022-12-05 19:31:37,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:37,405 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:37,405 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:37,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-05 19:31:37,405 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:37,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:37,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1119374311, now seen corresponding path program 19 times [2022-12-05 19:31:37,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:37,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256909585] [2022-12-05 19:31:37,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:37,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:38,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:38,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:38,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256909585] [2022-12-05 19:31:38,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256909585] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:38,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:38,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:38,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381490994] [2022-12-05 19:31:38,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:38,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:38,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:38,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:38,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:38,207 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:38,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 379 transitions, 2936 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:38,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:38,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:38,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:39,328 INFO L130 PetriNetUnfolder]: 1745/4342 cut-off events. [2022-12-05 19:31:39,329 INFO L131 PetriNetUnfolder]: For 54550/54557 co-relation queries the response was YES. [2022-12-05 19:31:39,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19053 conditions, 4342 events. 1745/4342 cut-off events. For 54550/54557 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 37535 event pairs, 916 based on Foata normal form. 5/4175 useless extension candidates. Maximal degree in co-relation 18963. Up to 2522 conditions per place. [2022-12-05 19:31:39,366 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 241 selfloop transitions, 64 changer transitions 5/429 dead transitions. [2022-12-05 19:31:39,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 429 transitions, 4134 flow [2022-12-05 19:31:39,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:31:39,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:31:39,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2464 transitions. [2022-12-05 19:31:39,368 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6645091693635383 [2022-12-05 19:31:39,368 INFO L175 Difference]: Start difference. First operand has 365 places, 379 transitions, 2936 flow. Second operand 18 states and 2464 transitions. [2022-12-05 19:31:39,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 429 transitions, 4134 flow [2022-12-05 19:31:39,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 429 transitions, 3922 flow, removed 76 selfloop flow, removed 12 redundant places. [2022-12-05 19:31:39,491 INFO L231 Difference]: Finished difference. Result has 372 places, 382 transitions, 2919 flow [2022-12-05 19:31:39,491 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2726, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2919, PETRI_PLACES=372, PETRI_TRANSITIONS=382} [2022-12-05 19:31:39,492 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 187 predicate places. [2022-12-05 19:31:39,492 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 382 transitions, 2919 flow [2022-12-05 19:31:39,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:39,492 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:39,492 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:39,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-05 19:31:39,493 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:39,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:39,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1322013677, now seen corresponding path program 20 times [2022-12-05 19:31:39,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:39,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130131621] [2022-12-05 19:31:39,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:39,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:40,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:40,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:40,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130131621] [2022-12-05 19:31:40,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130131621] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:40,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:40,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:40,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715444384] [2022-12-05 19:31:40,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:40,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:40,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:40,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:40,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:40,123 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:40,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 382 transitions, 2919 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:40,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:40,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:40,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:41,134 INFO L130 PetriNetUnfolder]: 1751/4409 cut-off events. [2022-12-05 19:31:41,134 INFO L131 PetriNetUnfolder]: For 52047/52062 co-relation queries the response was YES. [2022-12-05 19:31:41,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19097 conditions, 4409 events. 1751/4409 cut-off events. For 52047/52062 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 38868 event pairs, 778 based on Foata normal form. 5/4219 useless extension candidates. Maximal degree in co-relation 19004. Up to 2558 conditions per place. [2022-12-05 19:31:41,181 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 246 selfloop transitions, 59 changer transitions 5/429 dead transitions. [2022-12-05 19:31:41,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 429 transitions, 4100 flow [2022-12-05 19:31:41,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:31:41,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:31:41,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2461 transitions. [2022-12-05 19:31:41,183 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6637001078748651 [2022-12-05 19:31:41,183 INFO L175 Difference]: Start difference. First operand has 372 places, 382 transitions, 2919 flow. Second operand 18 states and 2461 transitions. [2022-12-05 19:31:41,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 429 transitions, 4100 flow [2022-12-05 19:31:41,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 429 transitions, 3886 flow, removed 26 selfloop flow, removed 16 redundant places. [2022-12-05 19:31:41,312 INFO L231 Difference]: Finished difference. Result has 375 places, 385 transitions, 2875 flow [2022-12-05 19:31:41,313 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2710, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2875, PETRI_PLACES=375, PETRI_TRANSITIONS=385} [2022-12-05 19:31:41,313 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 190 predicate places. [2022-12-05 19:31:41,313 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 385 transitions, 2875 flow [2022-12-05 19:31:41,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:41,314 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:41,314 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:41,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-05 19:31:41,314 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:41,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:41,314 INFO L85 PathProgramCache]: Analyzing trace with hash 11640097, now seen corresponding path program 21 times [2022-12-05 19:31:41,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:41,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352382339] [2022-12-05 19:31:41,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:41,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:41,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:41,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:41,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352382339] [2022-12-05 19:31:41,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352382339] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:41,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:41,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:41,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665725141] [2022-12-05 19:31:41,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:41,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:41,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:41,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:41,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:41,947 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:41,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 385 transitions, 2875 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:41,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:41,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:41,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:42,967 INFO L130 PetriNetUnfolder]: 1751/4461 cut-off events. [2022-12-05 19:31:42,967 INFO L131 PetriNetUnfolder]: For 51819/51841 co-relation queries the response was YES. [2022-12-05 19:31:43,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18898 conditions, 4461 events. 1751/4461 cut-off events. For 51819/51841 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 39719 event pairs, 735 based on Foata normal form. 14/4278 useless extension candidates. Maximal degree in co-relation 18804. Up to 2554 conditions per place. [2022-12-05 19:31:43,019 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 249 selfloop transitions, 63 changer transitions 5/436 dead transitions. [2022-12-05 19:31:43,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 436 transitions, 4121 flow [2022-12-05 19:31:43,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:31:43,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:31:43,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2466 transitions. [2022-12-05 19:31:43,021 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6650485436893204 [2022-12-05 19:31:43,021 INFO L175 Difference]: Start difference. First operand has 375 places, 385 transitions, 2875 flow. Second operand 18 states and 2466 transitions. [2022-12-05 19:31:43,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 436 transitions, 4121 flow [2022-12-05 19:31:43,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 436 transitions, 4026 flow, removed 3 selfloop flow, removed 14 redundant places. [2022-12-05 19:31:43,161 INFO L231 Difference]: Finished difference. Result has 380 places, 389 transitions, 3002 flow [2022-12-05 19:31:43,161 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2783, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3002, PETRI_PLACES=380, PETRI_TRANSITIONS=389} [2022-12-05 19:31:43,161 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 195 predicate places. [2022-12-05 19:31:43,162 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 389 transitions, 3002 flow [2022-12-05 19:31:43,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:43,162 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:43,162 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:43,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-05 19:31:43,162 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:43,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:43,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1178716797, now seen corresponding path program 22 times [2022-12-05 19:31:43,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:43,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581602056] [2022-12-05 19:31:43,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:43,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:43,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:43,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:43,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581602056] [2022-12-05 19:31:43,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581602056] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:43,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:43,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:43,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120121206] [2022-12-05 19:31:43,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:43,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:43,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:43,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:43,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:43,757 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:43,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 389 transitions, 3002 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:43,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:43,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:43,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:44,795 INFO L130 PetriNetUnfolder]: 1763/4488 cut-off events. [2022-12-05 19:31:44,795 INFO L131 PetriNetUnfolder]: For 54254/54276 co-relation queries the response was YES. [2022-12-05 19:31:44,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19237 conditions, 4488 events. 1763/4488 cut-off events. For 54254/54276 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 40069 event pairs, 731 based on Foata normal form. 14/4304 useless extension candidates. Maximal degree in co-relation 19141. Up to 2556 conditions per place. [2022-12-05 19:31:44,841 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 253 selfloop transitions, 68 changer transitions 5/445 dead transitions. [2022-12-05 19:31:44,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 445 transitions, 4373 flow [2022-12-05 19:31:44,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:31:44,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:31:44,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2468 transitions. [2022-12-05 19:31:44,843 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6655879180151025 [2022-12-05 19:31:44,843 INFO L175 Difference]: Start difference. First operand has 380 places, 389 transitions, 3002 flow. Second operand 18 states and 2468 transitions. [2022-12-05 19:31:44,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 445 transitions, 4373 flow [2022-12-05 19:31:44,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 445 transitions, 4177 flow, removed 35 selfloop flow, removed 15 redundant places. [2022-12-05 19:31:44,972 INFO L231 Difference]: Finished difference. Result has 385 places, 397 transitions, 3145 flow [2022-12-05 19:31:44,973 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2812, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3145, PETRI_PLACES=385, PETRI_TRANSITIONS=397} [2022-12-05 19:31:44,973 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 200 predicate places. [2022-12-05 19:31:44,973 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 397 transitions, 3145 flow [2022-12-05 19:31:44,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:44,974 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:44,974 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:44,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-05 19:31:44,974 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:44,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:44,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1011533707, now seen corresponding path program 23 times [2022-12-05 19:31:44,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:44,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041114381] [2022-12-05 19:31:44,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:44,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:45,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:45,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:45,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041114381] [2022-12-05 19:31:45,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041114381] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:45,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:45,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:45,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153783448] [2022-12-05 19:31:45,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:45,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:45,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:45,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:45,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:45,581 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:45,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 397 transitions, 3145 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:45,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:45,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:45,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:46,700 INFO L130 PetriNetUnfolder]: 1763/4473 cut-off events. [2022-12-05 19:31:46,700 INFO L131 PetriNetUnfolder]: For 56419/56441 co-relation queries the response was YES. [2022-12-05 19:31:46,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19299 conditions, 4473 events. 1763/4473 cut-off events. For 56419/56441 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 39937 event pairs, 732 based on Foata normal form. 14/4293 useless extension candidates. Maximal degree in co-relation 19200. Up to 2542 conditions per place. [2022-12-05 19:31:46,751 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 256 selfloop transitions, 65 changer transitions 5/445 dead transitions. [2022-12-05 19:31:46,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 445 transitions, 4402 flow [2022-12-05 19:31:46,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:31:46,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:31:46,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2462 transitions. [2022-12-05 19:31:46,753 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6639697950377562 [2022-12-05 19:31:46,753 INFO L175 Difference]: Start difference. First operand has 385 places, 397 transitions, 3145 flow. Second operand 18 states and 2462 transitions. [2022-12-05 19:31:46,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 445 transitions, 4402 flow [2022-12-05 19:31:46,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 445 transitions, 4162 flow, removed 58 selfloop flow, removed 14 redundant places. [2022-12-05 19:31:46,898 INFO L231 Difference]: Finished difference. Result has 390 places, 400 transitions, 3110 flow [2022-12-05 19:31:46,898 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2907, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3110, PETRI_PLACES=390, PETRI_TRANSITIONS=400} [2022-12-05 19:31:46,898 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 205 predicate places. [2022-12-05 19:31:46,899 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 400 transitions, 3110 flow [2022-12-05 19:31:46,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:46,899 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:46,899 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:46,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-05 19:31:46,899 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:46,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:46,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1687322263, now seen corresponding path program 24 times [2022-12-05 19:31:46,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:46,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086490759] [2022-12-05 19:31:46,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:46,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:47,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:47,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:47,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086490759] [2022-12-05 19:31:47,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086490759] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:47,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:47,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:47,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600921142] [2022-12-05 19:31:47,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:47,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:47,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:47,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:47,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:47,565 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:47,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 400 transitions, 3110 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:47,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:47,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:47,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:48,702 INFO L130 PetriNetUnfolder]: 1808/4637 cut-off events. [2022-12-05 19:31:48,702 INFO L131 PetriNetUnfolder]: For 62032/62052 co-relation queries the response was YES. [2022-12-05 19:31:48,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20112 conditions, 4637 events. 1808/4637 cut-off events. For 62032/62052 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 41890 event pairs, 718 based on Foata normal form. 9/4442 useless extension candidates. Maximal degree in co-relation 20011. Up to 2495 conditions per place. [2022-12-05 19:31:48,754 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 266 selfloop transitions, 79 changer transitions 5/469 dead transitions. [2022-12-05 19:31:48,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 469 transitions, 4804 flow [2022-12-05 19:31:48,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 19:31:48,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 19:31:48,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2607 transitions. [2022-12-05 19:31:48,756 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6660705160960654 [2022-12-05 19:31:48,756 INFO L175 Difference]: Start difference. First operand has 390 places, 400 transitions, 3110 flow. Second operand 19 states and 2607 transitions. [2022-12-05 19:31:48,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 469 transitions, 4804 flow [2022-12-05 19:31:48,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 469 transitions, 4602 flow, removed 38 selfloop flow, removed 15 redundant places. [2022-12-05 19:31:48,915 INFO L231 Difference]: Finished difference. Result has 398 places, 411 transitions, 3436 flow [2022-12-05 19:31:48,915 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2914, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3436, PETRI_PLACES=398, PETRI_TRANSITIONS=411} [2022-12-05 19:31:48,915 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 213 predicate places. [2022-12-05 19:31:48,915 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 411 transitions, 3436 flow [2022-12-05 19:31:48,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:48,916 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:48,916 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:48,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-05 19:31:48,916 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:48,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:48,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1636792335, now seen corresponding path program 25 times [2022-12-05 19:31:48,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:48,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059872520] [2022-12-05 19:31:48,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:48,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:49,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:49,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:49,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059872520] [2022-12-05 19:31:49,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059872520] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:49,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:49,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:49,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272724481] [2022-12-05 19:31:49,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:49,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:49,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:49,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:49,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:49,482 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:49,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 411 transitions, 3436 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:49,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:49,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:49,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:50,498 INFO L130 PetriNetUnfolder]: 1818/4548 cut-off events. [2022-12-05 19:31:50,498 INFO L131 PetriNetUnfolder]: For 69788/69796 co-relation queries the response was YES. [2022-12-05 19:31:50,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20642 conditions, 4548 events. 1818/4548 cut-off events. For 69788/69796 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 40378 event pairs, 980 based on Foata normal form. 1/4358 useless extension candidates. Maximal degree in co-relation 20536. Up to 2655 conditions per place. [2022-12-05 19:31:50,553 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 271 selfloop transitions, 67 changer transitions 5/462 dead transitions. [2022-12-05 19:31:50,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 462 transitions, 4925 flow [2022-12-05 19:31:50,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:31:50,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:31:50,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2460 transitions. [2022-12-05 19:31:50,555 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6634304207119741 [2022-12-05 19:31:50,555 INFO L175 Difference]: Start difference. First operand has 398 places, 411 transitions, 3436 flow. Second operand 18 states and 2460 transitions. [2022-12-05 19:31:50,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 462 transitions, 4925 flow [2022-12-05 19:31:50,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 462 transitions, 4604 flow, removed 112 selfloop flow, removed 13 redundant places. [2022-12-05 19:31:50,777 INFO L231 Difference]: Finished difference. Result has 404 places, 419 transitions, 3496 flow [2022-12-05 19:31:50,778 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=3129, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3496, PETRI_PLACES=404, PETRI_TRANSITIONS=419} [2022-12-05 19:31:50,778 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 219 predicate places. [2022-12-05 19:31:50,778 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 419 transitions, 3496 flow [2022-12-05 19:31:50,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:50,778 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:50,778 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:50,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-05 19:31:50,779 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:50,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:50,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1515135861, now seen corresponding path program 26 times [2022-12-05 19:31:50,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:50,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144302080] [2022-12-05 19:31:50,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:50,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:51,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:51,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:51,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144302080] [2022-12-05 19:31:51,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144302080] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:51,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:51,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:51,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130771908] [2022-12-05 19:31:51,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:51,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:51,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:51,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:51,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:51,412 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:51,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 419 transitions, 3496 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:51,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:51,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:51,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:52,622 INFO L130 PetriNetUnfolder]: 1858/4777 cut-off events. [2022-12-05 19:31:52,622 INFO L131 PetriNetUnfolder]: For 72841/72861 co-relation queries the response was YES. [2022-12-05 19:31:52,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21249 conditions, 4777 events. 1858/4777 cut-off events. For 72841/72861 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 43653 event pairs, 767 based on Foata normal form. 9/4573 useless extension candidates. Maximal degree in co-relation 21141. Up to 2632 conditions per place. [2022-12-05 19:31:52,682 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 286 selfloop transitions, 75 changer transitions 5/485 dead transitions. [2022-12-05 19:31:52,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 485 transitions, 5160 flow [2022-12-05 19:31:52,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 19:31:52,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 19:31:52,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2607 transitions. [2022-12-05 19:31:52,684 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6660705160960654 [2022-12-05 19:31:52,684 INFO L175 Difference]: Start difference. First operand has 404 places, 419 transitions, 3496 flow. Second operand 19 states and 2607 transitions. [2022-12-05 19:31:52,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 485 transitions, 5160 flow [2022-12-05 19:31:52,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 485 transitions, 4908 flow, removed 87 selfloop flow, removed 11 redundant places. [2022-12-05 19:31:52,864 INFO L231 Difference]: Finished difference. Result has 415 places, 427 transitions, 3668 flow [2022-12-05 19:31:52,864 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=3260, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3668, PETRI_PLACES=415, PETRI_TRANSITIONS=427} [2022-12-05 19:31:52,865 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 230 predicate places. [2022-12-05 19:31:52,865 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 427 transitions, 3668 flow [2022-12-05 19:31:52,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:52,865 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:52,865 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:52,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-05 19:31:52,865 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:52,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:52,866 INFO L85 PathProgramCache]: Analyzing trace with hash -407131525, now seen corresponding path program 27 times [2022-12-05 19:31:52,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:52,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180921955] [2022-12-05 19:31:52,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:52,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:53,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:53,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:53,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180921955] [2022-12-05 19:31:53,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180921955] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:53,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:53,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:53,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921161748] [2022-12-05 19:31:53,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:53,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:53,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:53,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:53,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:53,490 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:53,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 427 transitions, 3668 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:53,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:53,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:53,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:54,702 INFO L130 PetriNetUnfolder]: 1900/4786 cut-off events. [2022-12-05 19:31:54,702 INFO L131 PetriNetUnfolder]: For 82524/82534 co-relation queries the response was YES. [2022-12-05 19:31:54,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22381 conditions, 4786 events. 1900/4786 cut-off events. For 82524/82534 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 43296 event pairs, 990 based on Foata normal form. 2/4586 useless extension candidates. Maximal degree in co-relation 22268. Up to 2739 conditions per place. [2022-12-05 19:31:54,764 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 292 selfloop transitions, 72 changer transitions 5/488 dead transitions. [2022-12-05 19:31:54,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 488 transitions, 5394 flow [2022-12-05 19:31:54,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:31:54,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:31:54,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2474 transitions. [2022-12-05 19:31:54,766 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6672060409924487 [2022-12-05 19:31:54,766 INFO L175 Difference]: Start difference. First operand has 415 places, 427 transitions, 3668 flow. Second operand 18 states and 2474 transitions. [2022-12-05 19:31:54,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 488 transitions, 5394 flow [2022-12-05 19:31:55,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 488 transitions, 5090 flow, removed 102 selfloop flow, removed 13 redundant places. [2022-12-05 19:31:55,010 INFO L231 Difference]: Finished difference. Result has 422 places, 433 transitions, 3805 flow [2022-12-05 19:31:55,010 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=3370, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3805, PETRI_PLACES=422, PETRI_TRANSITIONS=433} [2022-12-05 19:31:55,010 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 237 predicate places. [2022-12-05 19:31:55,011 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 433 transitions, 3805 flow [2022-12-05 19:31:55,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:55,011 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:55,011 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:55,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-05 19:31:55,011 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:55,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:55,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1778035457, now seen corresponding path program 28 times [2022-12-05 19:31:55,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:55,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193127683] [2022-12-05 19:31:55,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:55,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:55,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:55,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:55,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193127683] [2022-12-05 19:31:55,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193127683] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:55,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:55,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:55,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401417438] [2022-12-05 19:31:55,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:55,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:55,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:55,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:55,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:55,638 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:55,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 433 transitions, 3805 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:55,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:55,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:55,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:56,857 INFO L130 PetriNetUnfolder]: 1950/5037 cut-off events. [2022-12-05 19:31:56,857 INFO L131 PetriNetUnfolder]: For 91544/91566 co-relation queries the response was YES. [2022-12-05 19:31:56,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23322 conditions, 5037 events. 1950/5037 cut-off events. For 91544/91566 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 46964 event pairs, 797 based on Foata normal form. 14/4837 useless extension candidates. Maximal degree in co-relation 23205. Up to 2803 conditions per place. [2022-12-05 19:31:56,924 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 292 selfloop transitions, 80 changer transitions 5/496 dead transitions. [2022-12-05 19:31:56,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 496 transitions, 5521 flow [2022-12-05 19:31:56,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 19:31:56,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 19:31:56,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2605 transitions. [2022-12-05 19:31:56,926 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6655595298926928 [2022-12-05 19:31:56,926 INFO L175 Difference]: Start difference. First operand has 422 places, 433 transitions, 3805 flow. Second operand 19 states and 2605 transitions. [2022-12-05 19:31:56,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 496 transitions, 5521 flow [2022-12-05 19:31:57,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 496 transitions, 5200 flow, removed 112 selfloop flow, removed 13 redundant places. [2022-12-05 19:31:57,237 INFO L231 Difference]: Finished difference. Result has 430 places, 442 transitions, 3981 flow [2022-12-05 19:31:57,238 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=3490, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3981, PETRI_PLACES=430, PETRI_TRANSITIONS=442} [2022-12-05 19:31:57,238 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 245 predicate places. [2022-12-05 19:31:57,238 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 442 transitions, 3981 flow [2022-12-05 19:31:57,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:57,239 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:57,239 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:57,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-05 19:31:57,239 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:57,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:57,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1296773297, now seen corresponding path program 29 times [2022-12-05 19:31:57,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:57,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429570599] [2022-12-05 19:31:57,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:57,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:57,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:31:57,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:57,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429570599] [2022-12-05 19:31:57,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429570599] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:57,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:57,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:31:57,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237865972] [2022-12-05 19:31:57,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:57,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:31:57,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:57,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:31:57,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:31:57,926 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:31:57,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 442 transitions, 3981 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:57,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:57,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:31:57,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:59,374 INFO L130 PetriNetUnfolder]: 2022/5200 cut-off events. [2022-12-05 19:31:59,374 INFO L131 PetriNetUnfolder]: For 104074/104094 co-relation queries the response was YES. [2022-12-05 19:31:59,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24693 conditions, 5200 events. 2022/5200 cut-off events. For 104074/104094 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 48711 event pairs, 863 based on Foata normal form. 9/4981 useless extension candidates. Maximal degree in co-relation 24572. Up to 2924 conditions per place. [2022-12-05 19:31:59,426 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 313 selfloop transitions, 74 changer transitions 5/511 dead transitions. [2022-12-05 19:31:59,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 511 transitions, 5896 flow [2022-12-05 19:31:59,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 19:31:59,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 19:31:59,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2607 transitions. [2022-12-05 19:31:59,428 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6660705160960654 [2022-12-05 19:31:59,428 INFO L175 Difference]: Start difference. First operand has 430 places, 442 transitions, 3981 flow. Second operand 19 states and 2607 transitions. [2022-12-05 19:31:59,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 511 transitions, 5896 flow [2022-12-05 19:31:59,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 511 transitions, 5528 flow, removed 130 selfloop flow, removed 14 redundant places. [2022-12-05 19:31:59,768 INFO L231 Difference]: Finished difference. Result has 439 places, 453 transitions, 4098 flow [2022-12-05 19:31:59,768 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=3616, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4098, PETRI_PLACES=439, PETRI_TRANSITIONS=453} [2022-12-05 19:31:59,768 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 254 predicate places. [2022-12-05 19:31:59,768 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 453 transitions, 4098 flow [2022-12-05 19:31:59,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:31:59,769 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:59,769 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:59,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-05 19:31:59,769 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:31:59,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:59,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1832142179, now seen corresponding path program 30 times [2022-12-05 19:31:59,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:59,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471665210] [2022-12-05 19:31:59,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:59,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:32:00,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:32:00,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:32:00,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471665210] [2022-12-05 19:32:00,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471665210] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:32:00,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:32:00,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:32:00,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894473686] [2022-12-05 19:32:00,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:32:00,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:32:00,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:32:00,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:32:00,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:32:00,432 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:32:00,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 453 transitions, 4098 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:00,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:32:00,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:32:00,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:32:01,642 INFO L130 PetriNetUnfolder]: 2022/5179 cut-off events. [2022-12-05 19:32:01,642 INFO L131 PetriNetUnfolder]: For 100106/100128 co-relation queries the response was YES. [2022-12-05 19:32:01,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24443 conditions, 5179 events. 2022/5179 cut-off events. For 100106/100128 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 48418 event pairs, 862 based on Foata normal form. 14/4976 useless extension candidates. Maximal degree in co-relation 24316. Up to 2970 conditions per place. [2022-12-05 19:32:01,717 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 305 selfloop transitions, 75 changer transitions 5/504 dead transitions. [2022-12-05 19:32:01,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 504 transitions, 5621 flow [2022-12-05 19:32:01,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:32:01,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:32:01,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2464 transitions. [2022-12-05 19:32:01,718 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6645091693635383 [2022-12-05 19:32:01,718 INFO L175 Difference]: Start difference. First operand has 439 places, 453 transitions, 4098 flow. Second operand 18 states and 2464 transitions. [2022-12-05 19:32:01,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 504 transitions, 5621 flow [2022-12-05 19:32:02,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 504 transitions, 5321 flow, removed 118 selfloop flow, removed 11 redundant places. [2022-12-05 19:32:02,010 INFO L231 Difference]: Finished difference. Result has 447 places, 456 transitions, 4035 flow [2022-12-05 19:32:02,010 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=3800, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4035, PETRI_PLACES=447, PETRI_TRANSITIONS=456} [2022-12-05 19:32:02,011 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 262 predicate places. [2022-12-05 19:32:02,011 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 456 transitions, 4035 flow [2022-12-05 19:32:02,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:02,011 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:32:02,011 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:32:02,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-05 19:32:02,011 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:32:02,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:32:02,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1402789801, now seen corresponding path program 31 times [2022-12-05 19:32:02,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:32:02,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856884379] [2022-12-05 19:32:02,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:32:02,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:32:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:32:02,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:32:02,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:32:02,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856884379] [2022-12-05 19:32:02,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856884379] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:32:02,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:32:02,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:32:02,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854335369] [2022-12-05 19:32:02,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:32:02,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:32:02,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:32:02,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:32:02,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:32:02,690 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:32:02,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 456 transitions, 4035 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:02,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:32:02,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:32:02,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:32:04,064 INFO L130 PetriNetUnfolder]: 2078/5250 cut-off events. [2022-12-05 19:32:04,064 INFO L131 PetriNetUnfolder]: For 101919/101927 co-relation queries the response was YES. [2022-12-05 19:32:04,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25024 conditions, 5250 events. 2078/5250 cut-off events. For 101919/101927 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 48672 event pairs, 1087 based on Foata normal form. 1/5034 useless extension candidates. Maximal degree in co-relation 24894. Up to 3020 conditions per place. [2022-12-05 19:32:04,129 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 321 selfloop transitions, 78 changer transitions 5/523 dead transitions. [2022-12-05 19:32:04,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 523 transitions, 6001 flow [2022-12-05 19:32:04,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 19:32:04,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 19:32:04,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2607 transitions. [2022-12-05 19:32:04,131 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6660705160960654 [2022-12-05 19:32:04,131 INFO L175 Difference]: Start difference. First operand has 447 places, 456 transitions, 4035 flow. Second operand 19 states and 2607 transitions. [2022-12-05 19:32:04,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 523 transitions, 6001 flow [2022-12-05 19:32:04,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 523 transitions, 5753 flow, removed 49 selfloop flow, removed 15 redundant places. [2022-12-05 19:32:04,511 INFO L231 Difference]: Finished difference. Result has 454 places, 468 transitions, 4363 flow [2022-12-05 19:32:04,512 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=3791, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4363, PETRI_PLACES=454, PETRI_TRANSITIONS=468} [2022-12-05 19:32:04,512 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 269 predicate places. [2022-12-05 19:32:04,512 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 468 transitions, 4363 flow [2022-12-05 19:32:04,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:04,512 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:32:04,513 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:32:04,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-05 19:32:04,513 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:32:04,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:32:04,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1311128015, now seen corresponding path program 32 times [2022-12-05 19:32:04,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:32:04,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025631882] [2022-12-05 19:32:04,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:32:04,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:32:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:32:05,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:32:05,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:32:05,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025631882] [2022-12-05 19:32:05,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025631882] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:32:05,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:32:05,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:32:05,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669642913] [2022-12-05 19:32:05,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:32:05,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:32:05,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:32:05,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:32:05,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:32:05,249 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:32:05,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 468 transitions, 4363 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:05,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:32:05,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:32:05,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:32:06,756 INFO L130 PetriNetUnfolder]: 2129/5388 cut-off events. [2022-12-05 19:32:06,756 INFO L131 PetriNetUnfolder]: For 122033/122041 co-relation queries the response was YES. [2022-12-05 19:32:06,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26598 conditions, 5388 events. 2129/5388 cut-off events. For 122033/122041 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 50242 event pairs, 1117 based on Foata normal form. 1/5168 useless extension candidates. Maximal degree in co-relation 26465. Up to 3114 conditions per place. [2022-12-05 19:32:06,821 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 335 selfloop transitions, 76 changer transitions 5/535 dead transitions. [2022-12-05 19:32:06,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 535 transitions, 6454 flow [2022-12-05 19:32:06,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 19:32:06,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 19:32:06,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2611 transitions. [2022-12-05 19:32:06,884 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6670924885028104 [2022-12-05 19:32:06,884 INFO L175 Difference]: Start difference. First operand has 454 places, 468 transitions, 4363 flow. Second operand 19 states and 2611 transitions. [2022-12-05 19:32:06,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 535 transitions, 6454 flow [2022-12-05 19:32:07,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 535 transitions, 6026 flow, removed 163 selfloop flow, removed 13 redundant places. [2022-12-05 19:32:07,219 INFO L231 Difference]: Finished difference. Result has 462 places, 475 transitions, 4459 flow [2022-12-05 19:32:07,220 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=3966, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4459, PETRI_PLACES=462, PETRI_TRANSITIONS=475} [2022-12-05 19:32:07,220 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 277 predicate places. [2022-12-05 19:32:07,220 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 475 transitions, 4459 flow [2022-12-05 19:32:07,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:07,221 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:32:07,221 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:32:07,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-05 19:32:07,221 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:32:07,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:32:07,221 INFO L85 PathProgramCache]: Analyzing trace with hash 224772369, now seen corresponding path program 33 times [2022-12-05 19:32:07,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:32:07,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599189654] [2022-12-05 19:32:07,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:32:07,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:32:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:32:07,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:32:07,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:32:07,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599189654] [2022-12-05 19:32:07,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599189654] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:32:07,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:32:07,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:32:07,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779265485] [2022-12-05 19:32:07,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:32:07,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:32:07,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:32:07,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:32:07,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:32:07,789 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:32:07,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 475 transitions, 4459 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:07,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:32:07,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:32:07,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:32:09,282 INFO L130 PetriNetUnfolder]: 2135/5411 cut-off events. [2022-12-05 19:32:09,282 INFO L131 PetriNetUnfolder]: For 115184/115192 co-relation queries the response was YES. [2022-12-05 19:32:09,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26351 conditions, 5411 events. 2135/5411 cut-off events. For 115184/115192 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 50611 event pairs, 1151 based on Foata normal form. 1/5183 useless extension candidates. Maximal degree in co-relation 26214. Up to 3177 conditions per place. [2022-12-05 19:32:09,371 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 327 selfloop transitions, 71 changer transitions 5/522 dead transitions. [2022-12-05 19:32:09,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 522 transitions, 6064 flow [2022-12-05 19:32:09,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:32:09,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:32:09,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2462 transitions. [2022-12-05 19:32:09,373 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6639697950377562 [2022-12-05 19:32:09,373 INFO L175 Difference]: Start difference. First operand has 462 places, 475 transitions, 4459 flow. Second operand 18 states and 2462 transitions. [2022-12-05 19:32:09,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 522 transitions, 6064 flow [2022-12-05 19:32:09,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 522 transitions, 5715 flow, removed 121 selfloop flow, removed 14 redundant places. [2022-12-05 19:32:09,777 INFO L231 Difference]: Finished difference. Result has 467 places, 478 transitions, 4352 flow [2022-12-05 19:32:09,777 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=4113, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4352, PETRI_PLACES=467, PETRI_TRANSITIONS=478} [2022-12-05 19:32:09,778 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 282 predicate places. [2022-12-05 19:32:09,778 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 478 transitions, 4352 flow [2022-12-05 19:32:09,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:09,778 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:32:09,778 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:32:09,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-05 19:32:09,779 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:32:09,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:32:09,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1214650529, now seen corresponding path program 34 times [2022-12-05 19:32:09,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:32:09,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120601226] [2022-12-05 19:32:09,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:32:09,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:32:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:32:10,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:32:10,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:32:10,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120601226] [2022-12-05 19:32:10,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120601226] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:32:10,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:32:10,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:32:10,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298283369] [2022-12-05 19:32:10,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:32:10,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:32:10,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:32:10,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:32:10,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:32:10,380 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:32:10,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 478 transitions, 4352 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:10,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:32:10,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:32:10,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:32:11,971 INFO L130 PetriNetUnfolder]: 2186/5630 cut-off events. [2022-12-05 19:32:11,971 INFO L131 PetriNetUnfolder]: For 120285/120307 co-relation queries the response was YES. [2022-12-05 19:32:12,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27403 conditions, 5630 events. 2186/5630 cut-off events. For 120285/120307 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 53956 event pairs, 955 based on Foata normal form. 14/5400 useless extension candidates. Maximal degree in co-relation 27263. Up to 3192 conditions per place. [2022-12-05 19:32:12,045 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 340 selfloop transitions, 77 changer transitions 5/541 dead transitions. [2022-12-05 19:32:12,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 541 transitions, 6403 flow [2022-12-05 19:32:12,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:32:12,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:32:12,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2476 transitions. [2022-12-05 19:32:12,047 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6677454153182308 [2022-12-05 19:32:12,047 INFO L175 Difference]: Start difference. First operand has 467 places, 478 transitions, 4352 flow. Second operand 18 states and 2476 transitions. [2022-12-05 19:32:12,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 541 transitions, 6403 flow [2022-12-05 19:32:12,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 541 transitions, 6241 flow, removed 29 selfloop flow, removed 14 redundant places. [2022-12-05 19:32:12,495 INFO L231 Difference]: Finished difference. Result has 473 places, 485 transitions, 4721 flow [2022-12-05 19:32:12,496 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=4197, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4721, PETRI_PLACES=473, PETRI_TRANSITIONS=485} [2022-12-05 19:32:12,497 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 288 predicate places. [2022-12-05 19:32:12,497 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 485 transitions, 4721 flow [2022-12-05 19:32:12,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:12,497 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:32:12,497 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:32:12,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-05 19:32:12,497 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:32:12,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:32:12,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1052666031, now seen corresponding path program 35 times [2022-12-05 19:32:12,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:32:12,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014737381] [2022-12-05 19:32:12,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:32:12,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:32:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:32:13,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:32:13,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:32:13,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014737381] [2022-12-05 19:32:13,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014737381] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:32:13,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:32:13,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:32:13,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761885607] [2022-12-05 19:32:13,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:32:13,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:32:13,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:32:13,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:32:13,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:32:13,172 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:32:13,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 485 transitions, 4721 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:13,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:32:13,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:32:13,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:32:14,794 INFO L130 PetriNetUnfolder]: 2213/5708 cut-off events. [2022-12-05 19:32:14,794 INFO L131 PetriNetUnfolder]: For 133629/133651 co-relation queries the response was YES. [2022-12-05 19:32:14,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28394 conditions, 5708 events. 2213/5708 cut-off events. For 133629/133651 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 54890 event pairs, 961 based on Foata normal form. 14/5476 useless extension candidates. Maximal degree in co-relation 28251. Up to 3276 conditions per place. [2022-12-05 19:32:14,861 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 342 selfloop transitions, 80 changer transitions 5/546 dead transitions. [2022-12-05 19:32:14,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 546 transitions, 6675 flow [2022-12-05 19:32:14,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:32:14,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:32:14,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2470 transitions. [2022-12-05 19:32:14,863 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6661272923408845 [2022-12-05 19:32:14,863 INFO L175 Difference]: Start difference. First operand has 473 places, 485 transitions, 4721 flow. Second operand 18 states and 2470 transitions. [2022-12-05 19:32:14,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 546 transitions, 6675 flow [2022-12-05 19:32:15,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 546 transitions, 6355 flow, removed 127 selfloop flow, removed 12 redundant places. [2022-12-05 19:32:15,365 INFO L231 Difference]: Finished difference. Result has 481 places, 495 transitions, 4844 flow [2022-12-05 19:32:15,366 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=4403, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4844, PETRI_PLACES=481, PETRI_TRANSITIONS=495} [2022-12-05 19:32:15,366 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 296 predicate places. [2022-12-05 19:32:15,366 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 495 transitions, 4844 flow [2022-12-05 19:32:15,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:15,366 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:32:15,366 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:32:15,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-12-05 19:32:15,367 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:32:15,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:32:15,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1209075805, now seen corresponding path program 36 times [2022-12-05 19:32:15,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:32:15,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171988858] [2022-12-05 19:32:15,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:32:15,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:32:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:32:16,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:32:16,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:32:16,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171988858] [2022-12-05 19:32:16,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171988858] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:32:16,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:32:16,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:32:16,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140325102] [2022-12-05 19:32:16,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:32:16,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:32:16,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:32:16,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:32:16,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:32:16,015 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:32:16,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 495 transitions, 4844 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:16,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:32:16,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:32:16,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:32:17,642 INFO L130 PetriNetUnfolder]: 2213/5705 cut-off events. [2022-12-05 19:32:17,642 INFO L131 PetriNetUnfolder]: For 124343/124363 co-relation queries the response was YES. [2022-12-05 19:32:17,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28043 conditions, 5705 events. 2213/5705 cut-off events. For 124343/124363 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 54563 event pairs, 976 based on Foata normal form. 9/5469 useless extension candidates. Maximal degree in co-relation 27896. Up to 3250 conditions per place. [2022-12-05 19:32:17,715 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 340 selfloop transitions, 81 changer transitions 5/545 dead transitions. [2022-12-05 19:32:17,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 545 transitions, 6533 flow [2022-12-05 19:32:17,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:32:17,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:32:17,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2465 transitions. [2022-12-05 19:32:17,717 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6647788565264293 [2022-12-05 19:32:17,717 INFO L175 Difference]: Start difference. First operand has 481 places, 495 transitions, 4844 flow. Second operand 18 states and 2465 transitions. [2022-12-05 19:32:17,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 545 transitions, 6533 flow [2022-12-05 19:32:18,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 545 transitions, 6322 flow, removed 52 selfloop flow, removed 12 redundant places. [2022-12-05 19:32:18,108 INFO L231 Difference]: Finished difference. Result has 488 places, 498 transitions, 4891 flow [2022-12-05 19:32:18,109 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=4635, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4891, PETRI_PLACES=488, PETRI_TRANSITIONS=498} [2022-12-05 19:32:18,109 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 303 predicate places. [2022-12-05 19:32:18,109 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 498 transitions, 4891 flow [2022-12-05 19:32:18,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:18,109 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:32:18,110 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:32:18,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-12-05 19:32:18,110 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:32:18,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:32:18,110 INFO L85 PathProgramCache]: Analyzing trace with hash -48243743, now seen corresponding path program 37 times [2022-12-05 19:32:18,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:32:18,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405902909] [2022-12-05 19:32:18,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:32:18,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:32:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:32:18,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:32:18,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:32:18,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405902909] [2022-12-05 19:32:18,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405902909] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:32:18,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:32:18,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:32:18,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960749665] [2022-12-05 19:32:18,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:32:18,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:32:18,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:32:18,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:32:18,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:32:18,686 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:32:18,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 498 transitions, 4891 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:18,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:32:18,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:32:18,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:32:20,271 INFO L130 PetriNetUnfolder]: 2219/5716 cut-off events. [2022-12-05 19:32:20,271 INFO L131 PetriNetUnfolder]: For 125061/125081 co-relation queries the response was YES. [2022-12-05 19:32:20,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28101 conditions, 5716 events. 2219/5716 cut-off events. For 125061/125081 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 54895 event pairs, 981 based on Foata normal form. 9/5475 useless extension candidates. Maximal degree in co-relation 27952. Up to 3271 conditions per place. [2022-12-05 19:32:20,338 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 347 selfloop transitions, 83 changer transitions 5/554 dead transitions. [2022-12-05 19:32:20,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 554 transitions, 6790 flow [2022-12-05 19:32:20,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:32:20,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:32:20,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2469 transitions. [2022-12-05 19:32:20,340 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6658576051779935 [2022-12-05 19:32:20,340 INFO L175 Difference]: Start difference. First operand has 488 places, 498 transitions, 4891 flow. Second operand 18 states and 2469 transitions. [2022-12-05 19:32:20,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 554 transitions, 6790 flow [2022-12-05 19:32:20,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 554 transitions, 6552 flow, removed 38 selfloop flow, removed 15 redundant places. [2022-12-05 19:32:20,715 INFO L231 Difference]: Finished difference. Result has 493 places, 506 transitions, 5110 flow [2022-12-05 19:32:20,715 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=4659, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5110, PETRI_PLACES=493, PETRI_TRANSITIONS=506} [2022-12-05 19:32:20,715 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 308 predicate places. [2022-12-05 19:32:20,716 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 506 transitions, 5110 flow [2022-12-05 19:32:20,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:20,716 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:32:20,716 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:32:20,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-12-05 19:32:20,716 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:32:20,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:32:20,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1013077733, now seen corresponding path program 38 times [2022-12-05 19:32:20,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:32:20,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754380493] [2022-12-05 19:32:20,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:32:20,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:32:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:32:21,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:32:21,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:32:21,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754380493] [2022-12-05 19:32:21,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754380493] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:32:21,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:32:21,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:32:21,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225918219] [2022-12-05 19:32:21,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:32:21,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:32:21,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:32:21,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:32:21,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:32:21,403 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:32:21,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 506 transitions, 5110 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:21,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:32:21,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:32:21,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:32:23,148 INFO L130 PetriNetUnfolder]: 2219/5690 cut-off events. [2022-12-05 19:32:23,148 INFO L131 PetriNetUnfolder]: For 128352/128374 co-relation queries the response was YES. [2022-12-05 19:32:23,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28141 conditions, 5690 events. 2219/5690 cut-off events. For 128352/128374 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 54579 event pairs, 966 based on Foata normal form. 14/5461 useless extension candidates. Maximal degree in co-relation 27989. Up to 3257 conditions per place. [2022-12-05 19:32:23,222 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 350 selfloop transitions, 80 changer transitions 5/554 dead transitions. [2022-12-05 19:32:23,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 554 transitions, 6833 flow [2022-12-05 19:32:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:32:23,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:32:23,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2463 transitions. [2022-12-05 19:32:23,223 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6642394822006472 [2022-12-05 19:32:23,223 INFO L175 Difference]: Start difference. First operand has 493 places, 506 transitions, 5110 flow. Second operand 18 states and 2463 transitions. [2022-12-05 19:32:23,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 554 transitions, 6833 flow [2022-12-05 19:32:23,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 554 transitions, 6491 flow, removed 110 selfloop flow, removed 14 redundant places. [2022-12-05 19:32:23,640 INFO L231 Difference]: Finished difference. Result has 498 places, 509 transitions, 5043 flow [2022-12-05 19:32:23,640 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=4786, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5043, PETRI_PLACES=498, PETRI_TRANSITIONS=509} [2022-12-05 19:32:23,640 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 313 predicate places. [2022-12-05 19:32:23,641 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 509 transitions, 5043 flow [2022-12-05 19:32:23,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:23,641 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:32:23,641 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:32:23,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-12-05 19:32:23,641 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:32:23,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:32:23,642 INFO L85 PathProgramCache]: Analyzing trace with hash -927107521, now seen corresponding path program 39 times [2022-12-05 19:32:23,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:32:23,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705677105] [2022-12-05 19:32:23,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:32:23,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:32:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:32:24,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:32:24,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:32:24,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705677105] [2022-12-05 19:32:24,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705677105] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:32:24,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:32:24,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:32:24,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517812390] [2022-12-05 19:32:24,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:32:24,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:32:24,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:32:24,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:32:24,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:32:24,267 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:32:24,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 509 transitions, 5043 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:24,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:32:24,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:32:24,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:32:25,822 INFO L130 PetriNetUnfolder]: 2219/5593 cut-off events. [2022-12-05 19:32:25,822 INFO L131 PetriNetUnfolder]: For 121083/121093 co-relation queries the response was YES. [2022-12-05 19:32:25,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27699 conditions, 5593 events. 2219/5593 cut-off events. For 121083/121093 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 52770 event pairs, 1167 based on Foata normal form. 2/5363 useless extension candidates. Maximal degree in co-relation 27546. Up to 3263 conditions per place. [2022-12-05 19:32:25,892 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 355 selfloop transitions, 81 changer transitions 5/560 dead transitions. [2022-12-05 19:32:25,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 560 transitions, 6818 flow [2022-12-05 19:32:25,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:32:25,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:32:25,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2467 transitions. [2022-12-05 19:32:25,894 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6653182308522114 [2022-12-05 19:32:25,894 INFO L175 Difference]: Start difference. First operand has 498 places, 509 transitions, 5043 flow. Second operand 18 states and 2467 transitions. [2022-12-05 19:32:25,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 560 transitions, 6818 flow [2022-12-05 19:32:26,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 560 transitions, 6558 flow, removed 51 selfloop flow, removed 15 redundant places. [2022-12-05 19:32:26,255 INFO L231 Difference]: Finished difference. Result has 502 places, 513 transitions, 5086 flow [2022-12-05 19:32:26,255 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=4787, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5086, PETRI_PLACES=502, PETRI_TRANSITIONS=513} [2022-12-05 19:32:26,255 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 317 predicate places. [2022-12-05 19:32:26,256 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 513 transitions, 5086 flow [2022-12-05 19:32:26,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:26,256 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:32:26,256 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:32:26,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-12-05 19:32:26,256 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:32:26,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:32:26,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1105954237, now seen corresponding path program 40 times [2022-12-05 19:32:26,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:32:26,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924141169] [2022-12-05 19:32:26,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:32:26,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:32:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:32:26,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:32:26,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:32:26,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924141169] [2022-12-05 19:32:26,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924141169] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:32:26,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:32:26,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:32:26,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419083684] [2022-12-05 19:32:26,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:32:26,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:32:26,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:32:26,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:32:26,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:32:26,956 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:32:26,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 513 transitions, 5086 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:26,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:32:26,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:32:26,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:32:28,675 INFO L130 PetriNetUnfolder]: 2259/5699 cut-off events. [2022-12-05 19:32:28,675 INFO L131 PetriNetUnfolder]: For 131866/131876 co-relation queries the response was YES. [2022-12-05 19:32:28,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28503 conditions, 5699 events. 2259/5699 cut-off events. For 131866/131876 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 54132 event pairs, 1179 based on Foata normal form. 1/5472 useless extension candidates. Maximal degree in co-relation 28348. Up to 3250 conditions per place. [2022-12-05 19:32:28,752 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 365 selfloop transitions, 89 changer transitions 5/578 dead transitions. [2022-12-05 19:32:28,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 578 transitions, 7255 flow [2022-12-05 19:32:28,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 19:32:28,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 19:32:28,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2609 transitions. [2022-12-05 19:32:28,754 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6665815022994379 [2022-12-05 19:32:28,754 INFO L175 Difference]: Start difference. First operand has 502 places, 513 transitions, 5086 flow. Second operand 19 states and 2609 transitions. [2022-12-05 19:32:28,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 578 transitions, 7255 flow [2022-12-05 19:32:29,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 578 transitions, 6983 flow, removed 57 selfloop flow, removed 15 redundant places. [2022-12-05 19:32:29,135 INFO L231 Difference]: Finished difference. Result has 509 places, 522 transitions, 5394 flow [2022-12-05 19:32:29,136 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=4816, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5394, PETRI_PLACES=509, PETRI_TRANSITIONS=522} [2022-12-05 19:32:29,136 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 324 predicate places. [2022-12-05 19:32:29,136 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 522 transitions, 5394 flow [2022-12-05 19:32:29,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:29,137 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:32:29,137 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:32:29,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-12-05 19:32:29,137 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:32:29,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:32:29,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1897338913, now seen corresponding path program 41 times [2022-12-05 19:32:29,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:32:29,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98505410] [2022-12-05 19:32:29,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:32:29,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:32:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:32:29,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:32:29,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:32:29,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98505410] [2022-12-05 19:32:29,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98505410] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:32:29,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:32:29,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:32:29,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084938925] [2022-12-05 19:32:29,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:32:29,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:32:29,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:32:29,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:32:29,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:32:29,789 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:32:29,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 522 transitions, 5394 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:29,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:32:29,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:32:29,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:32:31,597 INFO L130 PetriNetUnfolder]: 2299/5795 cut-off events. [2022-12-05 19:32:31,597 INFO L131 PetriNetUnfolder]: For 150805/150815 co-relation queries the response was YES. [2022-12-05 19:32:31,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29630 conditions, 5795 events. 2299/5795 cut-off events. For 150805/150815 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 55274 event pairs, 1218 based on Foata normal form. 1/5555 useless extension candidates. Maximal degree in co-relation 29471. Up to 3323 conditions per place. [2022-12-05 19:32:31,667 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 381 selfloop transitions, 87 changer transitions 5/592 dead transitions. [2022-12-05 19:32:31,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 592 transitions, 7737 flow [2022-12-05 19:32:31,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 19:32:31,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 19:32:31,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2611 transitions. [2022-12-05 19:32:31,669 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6670924885028104 [2022-12-05 19:32:31,669 INFO L175 Difference]: Start difference. First operand has 509 places, 522 transitions, 5394 flow. Second operand 19 states and 2611 transitions. [2022-12-05 19:32:31,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 592 transitions, 7737 flow [2022-12-05 19:32:32,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 592 transitions, 7257 flow, removed 173 selfloop flow, removed 17 redundant places. [2022-12-05 19:32:32,161 INFO L231 Difference]: Finished difference. Result has 515 places, 533 transitions, 5513 flow [2022-12-05 19:32:32,161 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=4917, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5513, PETRI_PLACES=515, PETRI_TRANSITIONS=533} [2022-12-05 19:32:32,162 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 330 predicate places. [2022-12-05 19:32:32,162 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 533 transitions, 5513 flow [2022-12-05 19:32:32,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:32,162 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:32:32,162 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:32:32,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-12-05 19:32:32,163 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:32:32,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:32:32,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1426482593, now seen corresponding path program 42 times [2022-12-05 19:32:32,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:32:32,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382676313] [2022-12-05 19:32:32,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:32:32,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:32:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:32:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:32:32,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:32:32,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382676313] [2022-12-05 19:32:32,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382676313] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:32:32,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:32:32,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:32:32,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324697399] [2022-12-05 19:32:32,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:32:32,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:32:32,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:32:32,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:32:32,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:32:32,836 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:32:32,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 533 transitions, 5513 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:32,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:32:32,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:32:32,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:32:34,539 INFO L130 PetriNetUnfolder]: 2341/5931 cut-off events. [2022-12-05 19:32:34,539 INFO L131 PetriNetUnfolder]: For 158276/158286 co-relation queries the response was YES. [2022-12-05 19:32:34,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30467 conditions, 5931 events. 2341/5931 cut-off events. For 158276/158286 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 56926 event pairs, 1245 based on Foata normal form. 1/5696 useless extension candidates. Maximal degree in co-relation 30306. Up to 3410 conditions per place. [2022-12-05 19:32:34,609 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 388 selfloop transitions, 87 changer transitions 5/599 dead transitions. [2022-12-05 19:32:34,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 599 transitions, 7951 flow [2022-12-05 19:32:34,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 19:32:34,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 19:32:34,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2611 transitions. [2022-12-05 19:32:34,611 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6670924885028104 [2022-12-05 19:32:34,611 INFO L175 Difference]: Start difference. First operand has 515 places, 533 transitions, 5513 flow. Second operand 19 states and 2611 transitions. [2022-12-05 19:32:34,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 599 transitions, 7951 flow [2022-12-05 19:32:35,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 599 transitions, 7573 flow, removed 155 selfloop flow, removed 11 redundant places. [2022-12-05 19:32:35,203 INFO L231 Difference]: Finished difference. Result has 525 places, 539 transitions, 5726 flow [2022-12-05 19:32:35,203 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=5141, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5726, PETRI_PLACES=525, PETRI_TRANSITIONS=539} [2022-12-05 19:32:35,204 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 340 predicate places. [2022-12-05 19:32:35,204 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 539 transitions, 5726 flow [2022-12-05 19:32:35,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:35,204 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:32:35,204 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:32:35,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-12-05 19:32:35,205 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:32:35,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:32:35,205 INFO L85 PathProgramCache]: Analyzing trace with hash 257150083, now seen corresponding path program 43 times [2022-12-05 19:32:35,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:32:35,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207975770] [2022-12-05 19:32:35,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:32:35,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:32:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:32:35,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:32:35,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:32:35,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207975770] [2022-12-05 19:32:35,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207975770] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:32:35,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:32:35,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:32:35,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60753801] [2022-12-05 19:32:35,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:32:35,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:32:35,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:32:35,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:32:35,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:32:35,989 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:32:35,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 539 transitions, 5726 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:35,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:32:35,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:32:35,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:32:37,850 INFO L130 PetriNetUnfolder]: 2381/6164 cut-off events. [2022-12-05 19:32:37,850 INFO L131 PetriNetUnfolder]: For 171306/171328 co-relation queries the response was YES. [2022-12-05 19:32:37,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31310 conditions, 6164 events. 2381/6164 cut-off events. For 171306/171328 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 60487 event pairs, 1058 based on Foata normal form. 13/5914 useless extension candidates. Maximal degree in co-relation 31145. Up to 3485 conditions per place. [2022-12-05 19:32:37,927 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 390 selfloop transitions, 91 changer transitions 5/605 dead transitions. [2022-12-05 19:32:37,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 605 transitions, 8122 flow [2022-12-05 19:32:37,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 19:32:37,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 19:32:37,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2611 transitions. [2022-12-05 19:32:37,929 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6670924885028104 [2022-12-05 19:32:37,929 INFO L175 Difference]: Start difference. First operand has 525 places, 539 transitions, 5726 flow. Second operand 19 states and 2611 transitions. [2022-12-05 19:32:37,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 605 transitions, 8122 flow [2022-12-05 19:32:38,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 605 transitions, 7659 flow, removed 172 selfloop flow, removed 14 redundant places. [2022-12-05 19:32:38,620 INFO L231 Difference]: Finished difference. Result has 533 places, 549 transitions, 5941 flow [2022-12-05 19:32:38,620 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=5272, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5941, PETRI_PLACES=533, PETRI_TRANSITIONS=549} [2022-12-05 19:32:38,621 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 348 predicate places. [2022-12-05 19:32:38,621 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 549 transitions, 5941 flow [2022-12-05 19:32:38,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:38,621 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:32:38,621 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:32:38,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-12-05 19:32:38,621 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:32:38,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:32:38,622 INFO L85 PathProgramCache]: Analyzing trace with hash 450043109, now seen corresponding path program 44 times [2022-12-05 19:32:38,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:32:38,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345335211] [2022-12-05 19:32:38,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:32:38,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:32:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:32:39,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:32:39,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:32:39,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345335211] [2022-12-05 19:32:39,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345335211] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:32:39,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:32:39,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:32:39,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517651750] [2022-12-05 19:32:39,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:32:39,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:32:39,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:32:39,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:32:39,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:32:39,217 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:32:39,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 549 transitions, 5941 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:39,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:32:39,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:32:39,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:32:40,995 INFO L130 PetriNetUnfolder]: 2396/6091 cut-off events. [2022-12-05 19:32:40,995 INFO L131 PetriNetUnfolder]: For 166501/166511 co-relation queries the response was YES. [2022-12-05 19:32:41,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31128 conditions, 6091 events. 2396/6091 cut-off events. For 166501/166511 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 58925 event pairs, 1292 based on Foata normal form. 1/5845 useless extension candidates. Maximal degree in co-relation 30958. Up to 3558 conditions per place. [2022-12-05 19:32:41,083 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 395 selfloop transitions, 87 changer transitions 5/606 dead transitions. [2022-12-05 19:32:41,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 606 transitions, 8066 flow [2022-12-05 19:32:41,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:32:41,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:32:41,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2468 transitions. [2022-12-05 19:32:41,085 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6655879180151025 [2022-12-05 19:32:41,085 INFO L175 Difference]: Start difference. First operand has 533 places, 549 transitions, 5941 flow. Second operand 18 states and 2468 transitions. [2022-12-05 19:32:41,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 606 transitions, 8066 flow [2022-12-05 19:32:41,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 606 transitions, 7554 flow, removed 194 selfloop flow, removed 15 redundant places. [2022-12-05 19:32:41,880 INFO L231 Difference]: Finished difference. Result has 538 places, 556 transitions, 5807 flow [2022-12-05 19:32:41,880 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=5431, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5807, PETRI_PLACES=538, PETRI_TRANSITIONS=556} [2022-12-05 19:32:41,880 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 353 predicate places. [2022-12-05 19:32:41,880 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 556 transitions, 5807 flow [2022-12-05 19:32:41,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:41,881 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:32:41,881 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:32:41,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-12-05 19:32:41,881 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:32:41,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:32:41,881 INFO L85 PathProgramCache]: Analyzing trace with hash 719855253, now seen corresponding path program 45 times [2022-12-05 19:32:41,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:32:41,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115636151] [2022-12-05 19:32:41,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:32:41,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:32:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:32:42,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:32:42,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:32:42,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115636151] [2022-12-05 19:32:42,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115636151] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:32:42,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:32:42,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:32:42,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206131206] [2022-12-05 19:32:42,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:32:42,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:32:42,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:32:42,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:32:42,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:32:42,473 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:32:42,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 556 transitions, 5807 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:42,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:32:42,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:32:42,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:32:44,144 INFO L130 PetriNetUnfolder]: 2406/6232 cut-off events. [2022-12-05 19:32:44,144 INFO L131 PetriNetUnfolder]: For 150406/150428 co-relation queries the response was YES. [2022-12-05 19:32:44,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30796 conditions, 6232 events. 2406/6232 cut-off events. For 150406/150428 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 61531 event pairs, 1116 based on Foata normal form. 13/5970 useless extension candidates. Maximal degree in co-relation 30625. Up to 3599 conditions per place. [2022-12-05 19:32:44,231 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 398 selfloop transitions, 86 changer transitions 5/608 dead transitions. [2022-12-05 19:32:44,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 608 transitions, 8036 flow [2022-12-05 19:32:44,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:32:44,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:32:44,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2464 transitions. [2022-12-05 19:32:44,233 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6645091693635383 [2022-12-05 19:32:44,233 INFO L175 Difference]: Start difference. First operand has 538 places, 556 transitions, 5807 flow. Second operand 18 states and 2464 transitions. [2022-12-05 19:32:44,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 608 transitions, 8036 flow [2022-12-05 19:32:44,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 608 transitions, 7779 flow, removed 68 selfloop flow, removed 12 redundant places. [2022-12-05 19:32:44,954 INFO L231 Difference]: Finished difference. Result has 545 places, 564 transitions, 6123 flow [2022-12-05 19:32:44,955 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=5558, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6123, PETRI_PLACES=545, PETRI_TRANSITIONS=564} [2022-12-05 19:32:44,955 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 360 predicate places. [2022-12-05 19:32:44,955 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 564 transitions, 6123 flow [2022-12-05 19:32:44,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:44,955 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:32:44,956 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:32:44,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-12-05 19:32:44,956 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:32:44,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:32:44,956 INFO L85 PathProgramCache]: Analyzing trace with hash 2051254705, now seen corresponding path program 46 times [2022-12-05 19:32:44,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:32:44,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333291973] [2022-12-05 19:32:44,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:32:44,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:32:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:32:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:32:45,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:32:45,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333291973] [2022-12-05 19:32:45,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333291973] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:32:45,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:32:45,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:32:45,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773638422] [2022-12-05 19:32:45,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:32:45,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:32:45,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:32:45,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:32:45,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:32:45,674 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:32:45,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 564 transitions, 6123 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:45,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:32:45,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:32:45,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:32:47,581 INFO L130 PetriNetUnfolder]: 2448/6361 cut-off events. [2022-12-05 19:32:47,581 INFO L131 PetriNetUnfolder]: For 177644/177666 co-relation queries the response was YES. [2022-12-05 19:32:47,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32476 conditions, 6361 events. 2448/6361 cut-off events. For 177644/177666 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 63185 event pairs, 1120 based on Foata normal form. 13/6095 useless extension candidates. Maximal degree in co-relation 32302. Up to 3614 conditions per place. [2022-12-05 19:32:47,669 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 411 selfloop transitions, 91 changer transitions 5/626 dead transitions. [2022-12-05 19:32:47,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 626 transitions, 8653 flow [2022-12-05 19:32:47,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:32:47,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:32:47,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2478 transitions. [2022-12-05 19:32:47,671 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6682847896440129 [2022-12-05 19:32:47,671 INFO L175 Difference]: Start difference. First operand has 545 places, 564 transitions, 6123 flow. Second operand 18 states and 2478 transitions. [2022-12-05 19:32:47,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 626 transitions, 8653 flow [2022-12-05 19:32:48,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 626 transitions, 8278 flow, removed 139 selfloop flow, removed 11 redundant places. [2022-12-05 19:32:48,305 INFO L231 Difference]: Finished difference. Result has 554 places, 570 transitions, 6397 flow [2022-12-05 19:32:48,306 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=5754, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6397, PETRI_PLACES=554, PETRI_TRANSITIONS=570} [2022-12-05 19:32:48,306 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 369 predicate places. [2022-12-05 19:32:48,306 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 570 transitions, 6397 flow [2022-12-05 19:32:48,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:48,306 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:32:48,307 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:32:48,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-12-05 19:32:48,307 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:32:48,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:32:48,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1565953553, now seen corresponding path program 47 times [2022-12-05 19:32:48,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:32:48,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777410916] [2022-12-05 19:32:48,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:32:48,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:32:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:32:48,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:32:48,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:32:48,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777410916] [2022-12-05 19:32:48,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777410916] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:32:48,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:32:48,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:32:48,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174419841] [2022-12-05 19:32:48,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:32:48,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:32:48,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:32:48,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:32:48,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:32:48,925 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:32:48,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 570 transitions, 6397 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:48,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:32:48,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:32:48,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:32:50,982 INFO L130 PetriNetUnfolder]: 2499/6540 cut-off events. [2022-12-05 19:32:50,982 INFO L131 PetriNetUnfolder]: For 209711/209733 co-relation queries the response was YES. [2022-12-05 19:32:51,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34570 conditions, 6540 events. 2499/6540 cut-off events. For 209711/209733 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 65590 event pairs, 1130 based on Foata normal form. 13/6271 useless extension candidates. Maximal degree in co-relation 34392. Up to 3709 conditions per place. [2022-12-05 19:32:51,075 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 421 selfloop transitions, 93 changer transitions 5/638 dead transitions. [2022-12-05 19:32:51,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 638 transitions, 9118 flow [2022-12-05 19:32:51,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 19:32:51,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 19:32:51,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2615 transitions. [2022-12-05 19:32:51,077 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6681144609095554 [2022-12-05 19:32:51,077 INFO L175 Difference]: Start difference. First operand has 554 places, 570 transitions, 6397 flow. Second operand 19 states and 2615 transitions. [2022-12-05 19:32:51,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 638 transitions, 9118 flow [2022-12-05 19:32:51,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 638 transitions, 8619 flow, removed 189 selfloop flow, removed 13 redundant places. [2022-12-05 19:32:51,987 INFO L231 Difference]: Finished difference. Result has 562 places, 577 transitions, 6568 flow [2022-12-05 19:32:51,987 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=5909, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6568, PETRI_PLACES=562, PETRI_TRANSITIONS=577} [2022-12-05 19:32:51,987 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 377 predicate places. [2022-12-05 19:32:51,988 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 577 transitions, 6568 flow [2022-12-05 19:32:51,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:51,988 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:32:51,988 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:32:51,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-12-05 19:32:51,988 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:32:51,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:32:51,988 INFO L85 PathProgramCache]: Analyzing trace with hash 451166733, now seen corresponding path program 48 times [2022-12-05 19:32:51,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:32:51,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5995721] [2022-12-05 19:32:51,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:32:51,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:32:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:32:52,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:32:52,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:32:52,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5995721] [2022-12-05 19:32:52,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5995721] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:32:52,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:32:52,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:32:52,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831261450] [2022-12-05 19:32:52,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:32:52,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:32:52,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:32:52,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:32:52,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:32:52,777 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:32:52,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 577 transitions, 6568 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:52,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:32:52,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:32:52,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:32:54,628 INFO L130 PetriNetUnfolder]: 2550/6561 cut-off events. [2022-12-05 19:32:54,628 INFO L131 PetriNetUnfolder]: For 226433/226443 co-relation queries the response was YES. [2022-12-05 19:32:54,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35699 conditions, 6561 events. 2550/6561 cut-off events. For 226433/226443 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 64975 event pairs, 1378 based on Foata normal form. 1/6288 useless extension candidates. Maximal degree in co-relation 35517. Up to 3785 conditions per place. [2022-12-05 19:32:54,729 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 426 selfloop transitions, 91 changer transitions 5/641 dead transitions. [2022-12-05 19:32:54,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 641 transitions, 9224 flow [2022-12-05 19:32:54,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:32:54,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:32:54,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2480 transitions. [2022-12-05 19:32:54,730 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.668824163969795 [2022-12-05 19:32:54,730 INFO L175 Difference]: Start difference. First operand has 562 places, 577 transitions, 6568 flow. Second operand 18 states and 2480 transitions. [2022-12-05 19:32:54,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 641 transitions, 9224 flow [2022-12-05 19:32:55,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 641 transitions, 8754 flow, removed 171 selfloop flow, removed 14 redundant places. [2022-12-05 19:32:55,865 INFO L231 Difference]: Finished difference. Result has 568 places, 584 transitions, 6778 flow [2022-12-05 19:32:55,865 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=6105, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6778, PETRI_PLACES=568, PETRI_TRANSITIONS=584} [2022-12-05 19:32:55,865 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 383 predicate places. [2022-12-05 19:32:55,866 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 584 transitions, 6778 flow [2022-12-05 19:32:55,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:55,866 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:32:55,866 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:32:55,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-12-05 19:32:55,867 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:32:55,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:32:55,867 INFO L85 PathProgramCache]: Analyzing trace with hash -690662369, now seen corresponding path program 49 times [2022-12-05 19:32:55,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:32:55,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881990826] [2022-12-05 19:32:55,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:32:55,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:32:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:32:56,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:32:56,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:32:56,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881990826] [2022-12-05 19:32:56,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881990826] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:32:56,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:32:56,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:32:56,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342176605] [2022-12-05 19:32:56,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:32:56,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:32:56,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:32:56,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:32:56,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:32:56,438 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:32:56,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 584 transitions, 6778 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:56,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:32:56,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:32:56,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:32:58,420 INFO L130 PetriNetUnfolder]: 2577/6639 cut-off events. [2022-12-05 19:32:58,421 INFO L131 PetriNetUnfolder]: For 222982/222992 co-relation queries the response was YES. [2022-12-05 19:32:58,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36157 conditions, 6639 events. 2577/6639 cut-off events. For 222982/222992 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 66005 event pairs, 1384 based on Foata normal form. 1/6363 useless extension candidates. Maximal degree in co-relation 35971. Up to 3857 conditions per place. [2022-12-05 19:32:58,520 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 426 selfloop transitions, 96 changer transitions 5/646 dead transitions. [2022-12-05 19:32:58,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 646 transitions, 9267 flow [2022-12-05 19:32:58,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:32:58,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:32:58,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2474 transitions. [2022-12-05 19:32:58,522 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6672060409924487 [2022-12-05 19:32:58,522 INFO L175 Difference]: Start difference. First operand has 568 places, 584 transitions, 6778 flow. Second operand 18 states and 2474 transitions. [2022-12-05 19:32:58,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 646 transitions, 9267 flow [2022-12-05 19:32:59,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 646 transitions, 8841 flow, removed 176 selfloop flow, removed 12 redundant places. [2022-12-05 19:32:59,586 INFO L231 Difference]: Finished difference. Result has 576 places, 594 transitions, 6908 flow [2022-12-05 19:32:59,587 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=6354, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6908, PETRI_PLACES=576, PETRI_TRANSITIONS=594} [2022-12-05 19:32:59,587 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 391 predicate places. [2022-12-05 19:32:59,587 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 594 transitions, 6908 flow [2022-12-05 19:32:59,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:32:59,587 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:32:59,588 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:32:59,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-12-05 19:32:59,588 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:32:59,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:32:59,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1375141189, now seen corresponding path program 50 times [2022-12-05 19:32:59,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:32:59,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058090836] [2022-12-05 19:32:59,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:32:59,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:32:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:33:00,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:33:00,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:33:00,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058090836] [2022-12-05 19:33:00,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058090836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:33:00,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:33:00,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:33:00,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477879568] [2022-12-05 19:33:00,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:33:00,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:33:00,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:33:00,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:33:00,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:33:00,188 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:33:00,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 594 transitions, 6908 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:33:00,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:33:00,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:33:00,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:33:02,160 INFO L130 PetriNetUnfolder]: 2583/6741 cut-off events. [2022-12-05 19:33:02,160 INFO L131 PetriNetUnfolder]: For 205521/205543 co-relation queries the response was YES. [2022-12-05 19:33:02,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35814 conditions, 6741 events. 2583/6741 cut-off events. For 205521/205543 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 67975 event pairs, 1184 based on Foata normal form. 13/6463 useless extension candidates. Maximal degree in co-relation 35624. Up to 3856 conditions per place. [2022-12-05 19:33:02,262 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 428 selfloop transitions, 99 changer transitions 5/651 dead transitions. [2022-12-05 19:33:02,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 651 transitions, 9305 flow [2022-12-05 19:33:02,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:33:02,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:33:02,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2473 transitions. [2022-12-05 19:33:02,264 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6669363538295577 [2022-12-05 19:33:02,264 INFO L175 Difference]: Start difference. First operand has 576 places, 594 transitions, 6908 flow. Second operand 18 states and 2473 transitions. [2022-12-05 19:33:02,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 651 transitions, 9305 flow [2022-12-05 19:33:03,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 651 transitions, 9027 flow, removed 73 selfloop flow, removed 12 redundant places. [2022-12-05 19:33:03,077 INFO L231 Difference]: Finished difference. Result has 584 places, 602 transitions, 7203 flow [2022-12-05 19:33:03,077 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=6637, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7203, PETRI_PLACES=584, PETRI_TRANSITIONS=602} [2022-12-05 19:33:03,078 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 399 predicate places. [2022-12-05 19:33:03,078 INFO L495 AbstractCegarLoop]: Abstraction has has 584 places, 602 transitions, 7203 flow [2022-12-05 19:33:03,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:33:03,078 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:33:03,078 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:33:03,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-12-05 19:33:03,078 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:33:03,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:33:03,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1836361521, now seen corresponding path program 51 times [2022-12-05 19:33:03,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:33:03,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415703493] [2022-12-05 19:33:03,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:33:03,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:33:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:33:03,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:33:03,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:33:03,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415703493] [2022-12-05 19:33:03,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415703493] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:33:03,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:33:03,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:33:03,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177788831] [2022-12-05 19:33:03,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:33:03,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:33:03,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:33:03,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:33:03,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:33:03,625 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:33:03,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 602 transitions, 7203 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:33:03,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:33:03,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:33:03,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:33:05,775 INFO L130 PetriNetUnfolder]: 2589/6768 cut-off events. [2022-12-05 19:33:05,776 INFO L131 PetriNetUnfolder]: For 209598/209620 co-relation queries the response was YES. [2022-12-05 19:33:05,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35985 conditions, 6768 events. 2589/6768 cut-off events. For 209598/209620 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 68328 event pairs, 1194 based on Foata normal form. 13/6488 useless extension candidates. Maximal degree in co-relation 35792. Up to 3870 conditions per place. [2022-12-05 19:33:05,879 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 434 selfloop transitions, 96 changer transitions 5/654 dead transitions. [2022-12-05 19:33:05,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 654 transitions, 9428 flow [2022-12-05 19:33:05,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:33:05,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:33:05,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2471 transitions. [2022-12-05 19:33:05,881 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6663969795037756 [2022-12-05 19:33:05,881 INFO L175 Difference]: Start difference. First operand has 584 places, 602 transitions, 7203 flow. Second operand 18 states and 2471 transitions. [2022-12-05 19:33:05,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 654 transitions, 9428 flow [2022-12-05 19:33:06,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 654 transitions, 9019 flow, removed 133 selfloop flow, removed 14 redundant places. [2022-12-05 19:33:06,799 INFO L231 Difference]: Finished difference. Result has 589 places, 606 transitions, 7159 flow [2022-12-05 19:33:06,800 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=6797, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7159, PETRI_PLACES=589, PETRI_TRANSITIONS=606} [2022-12-05 19:33:06,800 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 404 predicate places. [2022-12-05 19:33:06,800 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 606 transitions, 7159 flow [2022-12-05 19:33:06,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:33:06,801 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:33:06,801 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:33:06,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-12-05 19:33:06,801 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:33:06,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:33:06,801 INFO L85 PathProgramCache]: Analyzing trace with hash -478342853, now seen corresponding path program 52 times [2022-12-05 19:33:06,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:33:06,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626864135] [2022-12-05 19:33:06,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:33:06,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:33:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:33:07,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:33:07,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:33:07,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626864135] [2022-12-05 19:33:07,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626864135] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:33:07,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:33:07,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:33:07,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077972430] [2022-12-05 19:33:07,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:33:07,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:33:07,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:33:07,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:33:07,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:33:07,459 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:33:07,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 606 transitions, 7159 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:33:07,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:33:07,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:33:07,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:33:09,648 INFO L130 PetriNetUnfolder]: 2592/6776 cut-off events. [2022-12-05 19:33:09,648 INFO L131 PetriNetUnfolder]: For 204712/204734 co-relation queries the response was YES. [2022-12-05 19:33:09,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35698 conditions, 6776 events. 2592/6776 cut-off events. For 204712/204734 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 68319 event pairs, 1186 based on Foata normal form. 13/6500 useless extension candidates. Maximal degree in co-relation 35504. Up to 3849 conditions per place. [2022-12-05 19:33:09,745 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 436 selfloop transitions, 100 changer transitions 5/660 dead transitions. [2022-12-05 19:33:09,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 660 transitions, 9491 flow [2022-12-05 19:33:09,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:33:09,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:33:09,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2469 transitions. [2022-12-05 19:33:09,746 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6658576051779935 [2022-12-05 19:33:09,746 INFO L175 Difference]: Start difference. First operand has 589 places, 606 transitions, 7159 flow. Second operand 18 states and 2469 transitions. [2022-12-05 19:33:09,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 660 transitions, 9491 flow [2022-12-05 19:33:10,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 660 transitions, 9151 flow, removed 76 selfloop flow, removed 15 redundant places. [2022-12-05 19:33:10,647 INFO L231 Difference]: Finished difference. Result has 594 places, 612 transitions, 7293 flow [2022-12-05 19:33:10,647 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=6821, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7293, PETRI_PLACES=594, PETRI_TRANSITIONS=612} [2022-12-05 19:33:10,648 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 409 predicate places. [2022-12-05 19:33:10,648 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 612 transitions, 7293 flow [2022-12-05 19:33:10,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:33:10,648 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:33:10,649 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:33:10,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-12-05 19:33:10,649 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:33:10,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:33:10,649 INFO L85 PathProgramCache]: Analyzing trace with hash -532274305, now seen corresponding path program 53 times [2022-12-05 19:33:10,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:33:10,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433251800] [2022-12-05 19:33:10,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:33:10,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:33:10,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:33:11,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:33:11,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:33:11,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433251800] [2022-12-05 19:33:11,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433251800] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:33:11,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:33:11,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:33:11,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61190170] [2022-12-05 19:33:11,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:33:11,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:33:11,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:33:11,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:33:11,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:33:11,294 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:33:11,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 612 transitions, 7293 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:33:11,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:33:11,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:33:11,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:33:13,335 INFO L130 PetriNetUnfolder]: 2592/6759 cut-off events. [2022-12-05 19:33:13,336 INFO L131 PetriNetUnfolder]: For 204528/204550 co-relation queries the response was YES. [2022-12-05 19:33:13,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35561 conditions, 6759 events. 2592/6759 cut-off events. For 204528/204550 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 68162 event pairs, 1191 based on Foata normal form. 13/6483 useless extension candidates. Maximal degree in co-relation 35364. Up to 3857 conditions per place. [2022-12-05 19:33:13,440 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 440 selfloop transitions, 97 changer transitions 5/661 dead transitions. [2022-12-05 19:33:13,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 661 transitions, 9502 flow [2022-12-05 19:33:13,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:33:13,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:33:13,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2467 transitions. [2022-12-05 19:33:13,441 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6653182308522114 [2022-12-05 19:33:13,441 INFO L175 Difference]: Start difference. First operand has 594 places, 612 transitions, 7293 flow. Second operand 18 states and 2467 transitions. [2022-12-05 19:33:13,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 661 transitions, 9502 flow [2022-12-05 19:33:14,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 661 transitions, 8982 flow, removed 132 selfloop flow, removed 16 redundant places. [2022-12-05 19:33:14,552 INFO L231 Difference]: Finished difference. Result has 597 places, 615 transitions, 7098 flow [2022-12-05 19:33:14,552 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=6775, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7098, PETRI_PLACES=597, PETRI_TRANSITIONS=615} [2022-12-05 19:33:14,553 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 412 predicate places. [2022-12-05 19:33:14,553 INFO L495 AbstractCegarLoop]: Abstraction has has 597 places, 615 transitions, 7098 flow [2022-12-05 19:33:14,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:33:14,553 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:33:14,553 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:33:14,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-12-05 19:33:14,553 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:33:14,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:33:14,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1765286173, now seen corresponding path program 54 times [2022-12-05 19:33:14,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:33:14,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688356042] [2022-12-05 19:33:14,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:33:14,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:33:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:33:15,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:33:15,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:33:15,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688356042] [2022-12-05 19:33:15,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688356042] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:33:15,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:33:15,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 19:33:15,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170733670] [2022-12-05 19:33:15,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:33:15,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 19:33:15,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:33:15,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 19:33:15,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2022-12-05 19:33:15,143 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 206 [2022-12-05 19:33:15,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 615 transitions, 7098 flow. Second operand has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:33:15,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:33:15,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 206 [2022-12-05 19:33:15,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:33:17,218 INFO L130 PetriNetUnfolder]: 2592/6659 cut-off events. [2022-12-05 19:33:17,218 INFO L131 PetriNetUnfolder]: For 199196/199206 co-relation queries the response was YES. [2022-12-05 19:33:17,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34923 conditions, 6659 events. 2592/6659 cut-off events. For 199196/199206 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 66474 event pairs, 1398 based on Foata normal form. 1/6381 useless extension candidates. Maximal degree in co-relation 34726. Up to 3863 conditions per place. [2022-12-05 19:33:17,317 INFO L137 encePairwiseOnDemand]: 187/206 looper letters, 444 selfloop transitions, 95 changer transitions 5/663 dead transitions. [2022-12-05 19:33:17,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 663 transitions, 9273 flow [2022-12-05 19:33:17,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:33:17,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:33:17,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2466 transitions. [2022-12-05 19:33:17,318 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6650485436893204 [2022-12-05 19:33:17,318 INFO L175 Difference]: Start difference. First operand has 597 places, 615 transitions, 7098 flow. Second operand 18 states and 2466 transitions. [2022-12-05 19:33:17,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 663 transitions, 9273 flow [2022-12-05 19:33:18,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 663 transitions, 8923 flow, removed 79 selfloop flow, removed 15 redundant places. [2022-12-05 19:33:18,238 INFO L231 Difference]: Finished difference. Result has 601 places, 618 transitions, 7022 flow [2022-12-05 19:33:18,238 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=6752, PETRI_DIFFERENCE_MINUEND_PLACES=580, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7022, PETRI_PLACES=601, PETRI_TRANSITIONS=618} [2022-12-05 19:33:18,239 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 416 predicate places. [2022-12-05 19:33:18,239 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 618 transitions, 7022 flow [2022-12-05 19:33:18,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.83333333333334) internal successors, (2373), 18 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:33:18,239 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:33:18,239 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:33:18,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-12-05 19:33:18,240 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:33:18,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:33:18,240 INFO L85 PathProgramCache]: Analyzing trace with hash -636920982, now seen corresponding path program 1 times [2022-12-05 19:33:18,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:33:18,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832477640] [2022-12-05 19:33:18,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:33:18,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:33:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:33:18,328 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:33:18,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:33:18,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832477640] [2022-12-05 19:33:18,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832477640] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:33:18,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988618876] [2022-12-05 19:33:18,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:33:18,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:33:18,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:33:18,332 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:33:18,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 19:33:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:33:18,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 19:33:18,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:33:18,685 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:33:18,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 19:33:18,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988618876] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:33:18,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 19:33:18,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-12-05 19:33:18,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562176597] [2022-12-05 19:33:18,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:33:18,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 19:33:18,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:33:18,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 19:33:18,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-05 19:33:18,687 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 206 [2022-12-05 19:33:18,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 618 transitions, 7022 flow. Second operand has 4 states, 4 states have (on average 180.75) internal successors, (723), 4 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:33:18,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:33:18,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 206 [2022-12-05 19:33:18,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:33:19,834 INFO L130 PetriNetUnfolder]: 1054/4065 cut-off events. [2022-12-05 19:33:19,834 INFO L131 PetriNetUnfolder]: For 337560/339250 co-relation queries the response was YES. [2022-12-05 19:33:19,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21847 conditions, 4065 events. 1054/4065 cut-off events. For 337560/339250 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 42508 event pairs, 123 based on Foata normal form. 495/4361 useless extension candidates. Maximal degree in co-relation 21648. Up to 610 conditions per place. [2022-12-05 19:33:19,900 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 57 selfloop transitions, 55 changer transitions 0/648 dead transitions. [2022-12-05 19:33:19,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 648 transitions, 7498 flow [2022-12-05 19:33:19,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 19:33:19,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 19:33:19,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 741 transitions. [2022-12-05 19:33:19,902 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8992718446601942 [2022-12-05 19:33:19,902 INFO L175 Difference]: Start difference. First operand has 601 places, 618 transitions, 7022 flow. Second operand 4 states and 741 transitions. [2022-12-05 19:33:19,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 648 transitions, 7498 flow [2022-12-05 19:33:20,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 648 transitions, 7341 flow, removed 5 selfloop flow, removed 15 redundant places. [2022-12-05 19:33:20,784 INFO L231 Difference]: Finished difference. Result has 589 places, 634 transitions, 7381 flow [2022-12-05 19:33:20,784 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=6750, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=7381, PETRI_PLACES=589, PETRI_TRANSITIONS=634} [2022-12-05 19:33:20,784 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 404 predicate places. [2022-12-05 19:33:20,784 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 634 transitions, 7381 flow [2022-12-05 19:33:20,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.75) internal successors, (723), 4 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:33:20,785 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:33:20,785 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:33:20,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-05 19:33:20,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-12-05 19:33:20,991 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:33:20,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:33:20,992 INFO L85 PathProgramCache]: Analyzing trace with hash 296069924, now seen corresponding path program 1 times [2022-12-05 19:33:20,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:33:20,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491389157] [2022-12-05 19:33:20,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:33:20,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:33:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:33:21,121 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:33:21,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:33:21,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491389157] [2022-12-05 19:33:21,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491389157] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:33:21,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030029611] [2022-12-05 19:33:21,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:33:21,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:33:21,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:33:21,123 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:33:21,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 19:33:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:33:21,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-05 19:33:21,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:33:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:33:21,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:33:21,582 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:33:21,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030029611] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:33:21,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:33:21,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-12-05 19:33:21,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965538217] [2022-12-05 19:33:21,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:33:21,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 19:33:21,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:33:21,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 19:33:21,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-12-05 19:33:21,585 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 206 [2022-12-05 19:33:21,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 634 transitions, 7381 flow. Second operand has 19 states, 19 states have (on average 154.68421052631578) internal successors, (2939), 19 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:33:21,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:33:21,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 206 [2022-12-05 19:33:21,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:33:23,745 INFO L130 PetriNetUnfolder]: 1479/6868 cut-off events. [2022-12-05 19:33:23,745 INFO L131 PetriNetUnfolder]: For 337507/339126 co-relation queries the response was YES. [2022-12-05 19:33:23,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35202 conditions, 6868 events. 1479/6868 cut-off events. For 337507/339126 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 82889 event pairs, 443 based on Foata normal form. 449/6927 useless extension candidates. Maximal degree in co-relation 35003. Up to 1226 conditions per place. [2022-12-05 19:33:23,850 INFO L137 encePairwiseOnDemand]: 193/206 looper letters, 136 selfloop transitions, 16 changer transitions 14/674 dead transitions. [2022-12-05 19:33:23,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 674 transitions, 8062 flow [2022-12-05 19:33:23,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-05 19:33:23,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-05 19:33:23,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2031 transitions. [2022-12-05 19:33:23,851 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7584017923823749 [2022-12-05 19:33:23,851 INFO L175 Difference]: Start difference. First operand has 589 places, 634 transitions, 7381 flow. Second operand 13 states and 2031 transitions. [2022-12-05 19:33:23,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 674 transitions, 8062 flow [2022-12-05 19:33:25,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 674 transitions, 7861 flow, removed 84 selfloop flow, removed 6 redundant places. [2022-12-05 19:33:25,099 INFO L231 Difference]: Finished difference. Result has 601 places, 640 transitions, 7303 flow [2022-12-05 19:33:25,099 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=7220, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7303, PETRI_PLACES=601, PETRI_TRANSITIONS=640} [2022-12-05 19:33:25,100 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 416 predicate places. [2022-12-05 19:33:25,100 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 640 transitions, 7303 flow [2022-12-05 19:33:25,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 154.68421052631578) internal successors, (2939), 19 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:33:25,100 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:33:25,100 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:33:25,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-05 19:33:25,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-12-05 19:33:25,304 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:33:25,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:33:25,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1358080644, now seen corresponding path program 1 times [2022-12-05 19:33:25,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:33:25,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381366037] [2022-12-05 19:33:25,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:33:25,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:33:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:33:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:33:25,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:33:25,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381366037] [2022-12-05 19:33:25,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381366037] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:33:25,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946716751] [2022-12-05 19:33:25,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:33:25,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:33:25,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:33:25,433 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:33:25,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 19:33:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:33:25,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-05 19:33:25,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:33:25,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:33:25,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:33:25,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:33:25,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946716751] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:33:25,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:33:25,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-12-05 19:33:25,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063617305] [2022-12-05 19:33:25,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:33:25,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 19:33:25,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:33:25,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 19:33:25,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-12-05 19:33:25,947 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 206 [2022-12-05 19:33:25,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 640 transitions, 7303 flow. Second operand has 19 states, 19 states have (on average 154.42105263157896) internal successors, (2934), 19 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:33:25,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:33:25,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 206 [2022-12-05 19:33:25,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:33:29,674 INFO L130 PetriNetUnfolder]: 2703/13010 cut-off events. [2022-12-05 19:33:29,674 INFO L131 PetriNetUnfolder]: For 492416/495274 co-relation queries the response was YES. [2022-12-05 19:33:29,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62433 conditions, 13010 events. 2703/13010 cut-off events. For 492416/495274 co-relation queries the response was YES. Maximal size of possible extension queue 863. Compared 175836 event pairs, 823 based on Foata normal form. 692/12989 useless extension candidates. Maximal degree in co-relation 62233. Up to 1878 conditions per place. [2022-12-05 19:33:29,872 INFO L137 encePairwiseOnDemand]: 190/206 looper letters, 225 selfloop transitions, 27 changer transitions 3/763 dead transitions. [2022-12-05 19:33:29,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 763 transitions, 8984 flow [2022-12-05 19:33:29,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-05 19:33:29,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-05 19:33:29,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2646 transitions. [2022-12-05 19:33:29,874 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7555682467161622 [2022-12-05 19:33:29,874 INFO L175 Difference]: Start difference. First operand has 601 places, 640 transitions, 7303 flow. Second operand 17 states and 2646 transitions. [2022-12-05 19:33:29,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 763 transitions, 8984 flow [2022-12-05 19:33:31,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 763 transitions, 8946 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-12-05 19:33:31,530 INFO L231 Difference]: Finished difference. Result has 618 places, 653 transitions, 7421 flow [2022-12-05 19:33:31,531 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=7282, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7421, PETRI_PLACES=618, PETRI_TRANSITIONS=653} [2022-12-05 19:33:31,531 INFO L294 CegarLoopForPetriNet]: 185 programPoint places, 433 predicate places. [2022-12-05 19:33:31,531 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 653 transitions, 7421 flow [2022-12-05 19:33:31,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 154.42105263157896) internal successors, (2934), 19 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:33:31,532 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:33:31,532 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:33:31,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-05 19:33:31,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:33:31,735 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:33:31,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:33:31,736 INFO L85 PathProgramCache]: Analyzing trace with hash -47054748, now seen corresponding path program 2 times [2022-12-05 19:33:31,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:33:31,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285410577] [2022-12-05 19:33:31,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:33:31,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:33:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:33:32,423 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:33:32,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:33:32,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285410577] [2022-12-05 19:33:32,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285410577] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:33:32,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692226147] [2022-12-05 19:33:32,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 19:33:32,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:33:32,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:33:32,425 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:33:32,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-05 19:33:32,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 19:33:32,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 19:33:32,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-05 19:33:32,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:33:33,424 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-05 19:33:33,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-12-05 19:33:33,528 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:33:33,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:33:33,644 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-05 19:33:33,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2022-12-05 19:33:34,414 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:33:34,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692226147] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:33:34,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:33:34,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 49 [2022-12-05 19:33:34,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900167979] [2022-12-05 19:33:34,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:33:34,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-05 19:33:34,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:33:34,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-05 19:33:34,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=1930, Unknown=0, NotChecked=0, Total=2352 [2022-12-05 19:33:34,418 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 206 [2022-12-05 19:33:34,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 653 transitions, 7421 flow. Second operand has 49 states, 49 states have (on average 95.26530612244898) internal successors, (4668), 49 states have internal predecessors, (4668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:33:34,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:33:34,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 206 [2022-12-05 19:33:34,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand