/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 --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/array-eq-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 16:59:10,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 16:59:10,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 16:59:10,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 16:59:10,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 16:59:10,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 16:59:10,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 16:59:10,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 16:59:10,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 16:59:10,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 16:59:10,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 16:59:10,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 16:59:10,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 16:59:10,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 16:59:10,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 16:59:10,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 16:59:10,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 16:59:10,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 16:59:10,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 16:59:10,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 16:59:10,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 16:59:10,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 16:59:10,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 16:59:10,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 16:59:10,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 16:59:10,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 16:59:10,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 16:59:10,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 16:59:10,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 16:59:10,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 16:59:10,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 16:59:10,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 16:59:10,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 16:59:10,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 16:59:10,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 16:59:10,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 16:59:10,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 16:59:10,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 16:59:10,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 16:59:10,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 16:59:10,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 16:59:10,876 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 [2022-12-06 16:59:10,892 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 16:59:10,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 16:59:10,893 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 16:59:10,893 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 16:59:10,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 16:59:10,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 16:59:10,894 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 16:59:10,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 16:59:10,894 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 16:59:10,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 16:59:10,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 16:59:10,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 16:59:10,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 16:59:10,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 16:59:10,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 16:59:10,895 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 16:59:10,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 16:59:10,895 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 16:59:10,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 16:59:10,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 16:59:10,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 16:59:10,896 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 16:59:10,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 16:59:10,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:59:10,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 16:59:10,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 16:59:10,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 16:59:10,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 16:59:10,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 16:59:10,897 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 16:59:10,897 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 16:59:10,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 16:59:11,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 16:59:11,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 16:59:11,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 16:59:11,153 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 16:59:11,154 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 16:59:11,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/array-eq-symm.wvr.c [2022-12-06 16:59:12,139 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 16:59:12,420 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 16:59:12,420 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-symm.wvr.c [2022-12-06 16:59:12,430 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deaaa0cc1/c8bcfb79004d4756960b31b39a870a8c/FLAG328cd2366 [2022-12-06 16:59:12,772 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deaaa0cc1/c8bcfb79004d4756960b31b39a870a8c [2022-12-06 16:59:12,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 16:59:12,775 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 16:59:12,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 16:59:12,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 16:59:12,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 16:59:12,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:59:12" (1/1) ... [2022-12-06 16:59:12,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ca862c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:12, skipping insertion in model container [2022-12-06 16:59:12,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:59:12" (1/1) ... [2022-12-06 16:59:12,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 16:59:12,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 16:59:12,944 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/array-eq-symm.wvr.c[2251,2264] [2022-12-06 16:59:12,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:59:12,970 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 16:59:12,995 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/array-eq-symm.wvr.c[2251,2264] [2022-12-06 16:59:13,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:59:13,013 INFO L208 MainTranslator]: Completed translation [2022-12-06 16:59:13,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:13 WrapperNode [2022-12-06 16:59:13,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 16:59:13,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 16:59:13,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 16:59:13,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 16:59:13,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:13" (1/1) ... [2022-12-06 16:59:13,034 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:13" (1/1) ... [2022-12-06 16:59:13,056 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 112 [2022-12-06 16:59:13,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 16:59:13,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 16:59:13,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 16:59:13,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 16:59:13,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:13" (1/1) ... [2022-12-06 16:59:13,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:13" (1/1) ... [2022-12-06 16:59:13,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:13" (1/1) ... [2022-12-06 16:59:13,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:13" (1/1) ... [2022-12-06 16:59:13,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:13" (1/1) ... [2022-12-06 16:59:13,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:13" (1/1) ... [2022-12-06 16:59:13,087 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:13" (1/1) ... [2022-12-06 16:59:13,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:13" (1/1) ... [2022-12-06 16:59:13,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 16:59:13,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 16:59:13,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 16:59:13,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 16:59:13,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:13" (1/1) ... [2022-12-06 16:59:13,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:59:13,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:59:13,120 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) [2022-12-06 16:59:13,141 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 [2022-12-06 16:59:13,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 16:59:13,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 16:59:13,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 16:59:13,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 16:59:13,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 16:59:13,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 16:59:13,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 16:59:13,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 16:59:13,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-06 16:59:13,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 16:59:13,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 16:59:13,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 16:59:13,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 16:59:13,163 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 16:59:13,242 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 16:59:13,243 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 16:59:13,448 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 16:59:13,454 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 16:59:13,454 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-06 16:59:13,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:59:13 BoogieIcfgContainer [2022-12-06 16:59:13,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 16:59:13,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 16:59:13,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 16:59:13,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 16:59:13,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 04:59:12" (1/3) ... [2022-12-06 16:59:13,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508574ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:59:13, skipping insertion in model container [2022-12-06 16:59:13,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:13" (2/3) ... [2022-12-06 16:59:13,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508574ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:59:13, skipping insertion in model container [2022-12-06 16:59:13,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:59:13" (3/3) ... [2022-12-06 16:59:13,464 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2022-12-06 16:59:13,481 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 16:59:13,482 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 16:59:13,482 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 16:59:13,526 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-06 16:59:13,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 159 transitions, 334 flow [2022-12-06 16:59:13,595 INFO L130 PetriNetUnfolder]: 15/157 cut-off events. [2022-12-06 16:59:13,596 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 16:59:13,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 157 events. 15/157 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 122 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 118. Up to 3 conditions per place. [2022-12-06 16:59:13,599 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 159 transitions, 334 flow [2022-12-06 16:59:13,603 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 149 transitions, 310 flow [2022-12-06 16:59:13,610 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 16:59:13,614 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;@530a0079, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 16:59:13,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-06 16:59:13,644 INFO L130 PetriNetUnfolder]: 15/148 cut-off events. [2022-12-06 16:59:13,644 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 16:59:13,645 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:13,645 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] [2022-12-06 16:59:13,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:59:13,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:13,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1736901044, now seen corresponding path program 1 times [2022-12-06 16:59:13,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:13,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058385980] [2022-12-06 16:59:13,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:13,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:14,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:59:14,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:14,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058385980] [2022-12-06 16:59:14,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058385980] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:14,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:14,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 16:59:14,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830246420] [2022-12-06 16:59:14,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:14,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 16:59:14,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:14,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 16:59:14,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-06 16:59:14,440 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 159 [2022-12-06 16:59:14,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 149 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 110.66666666666667) internal successors, (664), 6 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:14,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:14,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 159 [2022-12-06 16:59:14,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:14,739 INFO L130 PetriNetUnfolder]: 171/623 cut-off events. [2022-12-06 16:59:14,740 INFO L131 PetriNetUnfolder]: For 92/105 co-relation queries the response was YES. [2022-12-06 16:59:14,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 998 conditions, 623 events. 171/623 cut-off events. For 92/105 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3135 event pairs, 41 based on Foata normal form. 9/545 useless extension candidates. Maximal degree in co-relation 742. Up to 122 conditions per place. [2022-12-06 16:59:14,749 INFO L137 encePairwiseOnDemand]: 138/159 looper letters, 65 selfloop transitions, 5 changer transitions 11/178 dead transitions. [2022-12-06 16:59:14,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 178 transitions, 545 flow [2022-12-06 16:59:14,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 16:59:14,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 16:59:14,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1051 transitions. [2022-12-06 16:59:14,767 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7344514325646401 [2022-12-06 16:59:14,772 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 8 predicate places. [2022-12-06 16:59:14,772 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 178 transitions, 545 flow [2022-12-06 16:59:14,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.66666666666667) internal successors, (664), 6 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:14,773 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:14,773 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] [2022-12-06 16:59:14,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 16:59:14,774 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:59:14,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:14,775 INFO L85 PathProgramCache]: Analyzing trace with hash -48993759, now seen corresponding path program 1 times [2022-12-06 16:59:14,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:14,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638482973] [2022-12-06 16:59:14,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:14,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:14,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:59:14,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:14,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638482973] [2022-12-06 16:59:14,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638482973] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:14,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:14,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 16:59:14,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561058317] [2022-12-06 16:59:14,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:14,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 16:59:14,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:14,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 16:59:14,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-06 16:59:14,981 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 159 [2022-12-06 16:59:14,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 178 transitions, 545 flow. Second operand has 7 states, 7 states have (on average 113.42857142857143) internal successors, (794), 7 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:14,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:14,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 159 [2022-12-06 16:59:14,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:15,181 INFO L130 PetriNetUnfolder]: 212/830 cut-off events. [2022-12-06 16:59:15,181 INFO L131 PetriNetUnfolder]: For 352/535 co-relation queries the response was YES. [2022-12-06 16:59:15,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1633 conditions, 830 events. 212/830 cut-off events. For 352/535 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4449 event pairs, 46 based on Foata normal form. 0/718 useless extension candidates. Maximal degree in co-relation 963. Up to 141 conditions per place. [2022-12-06 16:59:15,186 INFO L137 encePairwiseOnDemand]: 147/159 looper letters, 75 selfloop transitions, 14 changer transitions 14/209 dead transitions. [2022-12-06 16:59:15,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 209 transitions, 845 flow [2022-12-06 16:59:15,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-06 16:59:15,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-06 16:59:15,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1168 transitions. [2022-12-06 16:59:15,189 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7345911949685534 [2022-12-06 16:59:15,189 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 17 predicate places. [2022-12-06 16:59:15,189 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 209 transitions, 845 flow [2022-12-06 16:59:15,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.42857142857143) internal successors, (794), 7 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:15,190 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:15,190 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] [2022-12-06 16:59:15,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 16:59:15,190 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:59:15,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:15,191 INFO L85 PathProgramCache]: Analyzing trace with hash -228609525, now seen corresponding path program 1 times [2022-12-06 16:59:15,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:15,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495468802] [2022-12-06 16:59:15,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:15,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:15,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:59:15,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:15,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495468802] [2022-12-06 16:59:15,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495468802] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:15,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:15,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 16:59:15,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929104893] [2022-12-06 16:59:15,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:15,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 16:59:15,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:15,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 16:59:15,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-06 16:59:15,348 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 159 [2022-12-06 16:59:15,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 209 transitions, 845 flow. Second operand has 7 states, 7 states have (on average 113.42857142857143) internal successors, (794), 7 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:15,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:15,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 159 [2022-12-06 16:59:15,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:15,512 INFO L130 PetriNetUnfolder]: 217/847 cut-off events. [2022-12-06 16:59:15,513 INFO L131 PetriNetUnfolder]: For 597/882 co-relation queries the response was YES. [2022-12-06 16:59:15,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1984 conditions, 847 events. 217/847 cut-off events. For 597/882 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4403 event pairs, 56 based on Foata normal form. 0/736 useless extension candidates. Maximal degree in co-relation 1421. Up to 204 conditions per place. [2022-12-06 16:59:15,517 INFO L137 encePairwiseOnDemand]: 147/159 looper letters, 65 selfloop transitions, 11 changer transitions 31/213 dead transitions. [2022-12-06 16:59:15,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 213 transitions, 1057 flow [2022-12-06 16:59:15,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-06 16:59:15,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-06 16:59:15,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1166 transitions. [2022-12-06 16:59:15,520 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2022-12-06 16:59:15,521 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 26 predicate places. [2022-12-06 16:59:15,521 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 213 transitions, 1057 flow [2022-12-06 16:59:15,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.42857142857143) internal successors, (794), 7 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:15,521 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:15,521 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] [2022-12-06 16:59:15,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 16:59:15,522 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:59:15,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:15,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1499856727, now seen corresponding path program 1 times [2022-12-06 16:59:15,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:15,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969271808] [2022-12-06 16:59:15,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:15,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:15,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 16:59:15,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:15,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969271808] [2022-12-06 16:59:15,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969271808] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:15,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:15,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 16:59:15,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895208955] [2022-12-06 16:59:15,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:15,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 16:59:15,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:15,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 16:59:15,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-06 16:59:15,636 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 159 [2022-12-06 16:59:15,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 213 transitions, 1057 flow. Second operand has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:15,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:15,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 159 [2022-12-06 16:59:15,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:15,817 INFO L130 PetriNetUnfolder]: 251/1059 cut-off events. [2022-12-06 16:59:15,818 INFO L131 PetriNetUnfolder]: For 1451/2033 co-relation queries the response was YES. [2022-12-06 16:59:15,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2856 conditions, 1059 events. 251/1059 cut-off events. For 1451/2033 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6002 event pairs, 52 based on Foata normal form. 0/931 useless extension candidates. Maximal degree in co-relation 1648. Up to 204 conditions per place. [2022-12-06 16:59:15,823 INFO L137 encePairwiseOnDemand]: 149/159 looper letters, 78 selfloop transitions, 10 changer transitions 46/244 dead transitions. [2022-12-06 16:59:15,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 244 transitions, 1565 flow [2022-12-06 16:59:15,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-06 16:59:15,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-06 16:59:15,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 938 transitions. [2022-12-06 16:59:15,825 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7374213836477987 [2022-12-06 16:59:15,826 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 33 predicate places. [2022-12-06 16:59:15,826 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 244 transitions, 1565 flow [2022-12-06 16:59:15,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:15,826 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:15,827 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] [2022-12-06 16:59:15,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 16:59:15,827 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:59:15,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:15,827 INFO L85 PathProgramCache]: Analyzing trace with hash 758818565, now seen corresponding path program 1 times [2022-12-06 16:59:15,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:15,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724213178] [2022-12-06 16:59:15,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:15,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 16:59:15,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:15,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724213178] [2022-12-06 16:59:15,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724213178] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:15,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:15,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 16:59:15,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385556542] [2022-12-06 16:59:15,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:15,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 16:59:15,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:15,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 16:59:15,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-06 16:59:15,962 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 159 [2022-12-06 16:59:15,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 244 transitions, 1565 flow. Second operand has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:15,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:15,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 159 [2022-12-06 16:59:15,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:16,124 INFO L130 PetriNetUnfolder]: 223/949 cut-off events. [2022-12-06 16:59:16,124 INFO L131 PetriNetUnfolder]: For 1883/2560 co-relation queries the response was YES. [2022-12-06 16:59:16,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2918 conditions, 949 events. 223/949 cut-off events. For 1883/2560 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5057 event pairs, 62 based on Foata normal form. 2/834 useless extension candidates. Maximal degree in co-relation 1885. Up to 204 conditions per place. [2022-12-06 16:59:16,129 INFO L137 encePairwiseOnDemand]: 149/159 looper letters, 71 selfloop transitions, 9 changer transitions 51/237 dead transitions. [2022-12-06 16:59:16,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 237 transitions, 1733 flow [2022-12-06 16:59:16,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-06 16:59:16,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-06 16:59:16,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 936 transitions. [2022-12-06 16:59:16,131 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7358490566037735 [2022-12-06 16:59:16,132 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 40 predicate places. [2022-12-06 16:59:16,132 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 237 transitions, 1733 flow [2022-12-06 16:59:16,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:16,133 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:16,133 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] [2022-12-06 16:59:16,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 16:59:16,133 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:59:16,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:16,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1703738240, now seen corresponding path program 1 times [2022-12-06 16:59:16,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:16,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98989013] [2022-12-06 16:59:16,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:16,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:16,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 16:59:16,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:16,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98989013] [2022-12-06 16:59:16,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98989013] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:59:16,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113746053] [2022-12-06 16:59:16,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:16,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:59:16,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:59:16,365 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) [2022-12-06 16:59:16,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 16:59:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:16,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-06 16:59:16,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:59:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 16:59:16,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:59:17,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 16:59:17,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113746053] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-06 16:59:17,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-06 16:59:17,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 30 [2022-12-06 16:59:17,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245556999] [2022-12-06 16:59:17,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:17,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-06 16:59:17,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:17,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-06 16:59:17,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=667, Unknown=0, NotChecked=0, Total=870 [2022-12-06 16:59:17,265 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 159 [2022-12-06 16:59:17,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 237 transitions, 1733 flow. Second operand has 11 states, 11 states have (on average 110.36363636363636) internal successors, (1214), 11 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:17,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:17,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 159 [2022-12-06 16:59:17,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:17,753 INFO L130 PetriNetUnfolder]: 212/983 cut-off events. [2022-12-06 16:59:17,753 INFO L131 PetriNetUnfolder]: For 2962/3396 co-relation queries the response was YES. [2022-12-06 16:59:17,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3337 conditions, 983 events. 212/983 cut-off events. For 2962/3396 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5497 event pairs, 56 based on Foata normal form. 0/874 useless extension candidates. Maximal degree in co-relation 2137. Up to 238 conditions per place. [2022-12-06 16:59:17,759 INFO L137 encePairwiseOnDemand]: 144/159 looper letters, 71 selfloop transitions, 16 changer transitions 51/246 dead transitions. [2022-12-06 16:59:17,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 246 transitions, 2114 flow [2022-12-06 16:59:17,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-06 16:59:17,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-06 16:59:17,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1909 transitions. [2022-12-06 16:59:17,762 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.706252312245653 [2022-12-06 16:59:17,762 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 56 predicate places. [2022-12-06 16:59:17,763 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 246 transitions, 2114 flow [2022-12-06 16:59:17,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.36363636363636) internal successors, (1214), 11 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:17,763 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:17,764 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] [2022-12-06 16:59:17,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-06 16:59:17,969 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,SelfDestructingSolverStorable5 [2022-12-06 16:59:17,969 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:59:17,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:17,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1747199854, now seen corresponding path program 1 times [2022-12-06 16:59:17,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:17,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682084639] [2022-12-06 16:59:17,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:17,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:59:18,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:18,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682084639] [2022-12-06 16:59:18,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682084639] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:59:18,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622934701] [2022-12-06 16:59:18,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:18,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:59:18,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:59:18,230 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) [2022-12-06 16:59:18,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-06 16:59:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:18,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-06 16:59:18,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:59:18,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:59:18,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:59:19,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:59:19,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622934701] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-06 16:59:19,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-06 16:59:19,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 30 [2022-12-06 16:59:19,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572311128] [2022-12-06 16:59:19,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:19,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-06 16:59:19,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:19,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-06 16:59:19,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=667, Unknown=0, NotChecked=0, Total=870 [2022-12-06 16:59:19,032 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 159 [2022-12-06 16:59:19,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 246 transitions, 2114 flow. Second operand has 11 states, 11 states have (on average 110.36363636363636) internal successors, (1214), 11 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:19,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:19,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 159 [2022-12-06 16:59:19,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:19,549 INFO L130 PetriNetUnfolder]: 178/995 cut-off events. [2022-12-06 16:59:19,549 INFO L131 PetriNetUnfolder]: For 3930/4419 co-relation queries the response was YES. [2022-12-06 16:59:19,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3594 conditions, 995 events. 178/995 cut-off events. For 3930/4419 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5748 event pairs, 51 based on Foata normal form. 5/907 useless extension candidates. Maximal degree in co-relation 2187. Up to 231 conditions per place. [2022-12-06 16:59:19,554 INFO L137 encePairwiseOnDemand]: 144/159 looper letters, 82 selfloop transitions, 18 changer transitions 51/255 dead transitions. [2022-12-06 16:59:19,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 255 transitions, 2542 flow [2022-12-06 16:59:19,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-06 16:59:19,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-06 16:59:19,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1907 transitions. [2022-12-06 16:59:19,557 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7055123936366999 [2022-12-06 16:59:19,558 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 72 predicate places. [2022-12-06 16:59:19,558 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 255 transitions, 2542 flow [2022-12-06 16:59:19,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.36363636363636) internal successors, (1214), 11 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:19,558 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:19,558 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] [2022-12-06 16:59:19,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-06 16:59:19,764 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,SelfDestructingSolverStorable6 [2022-12-06 16:59:19,764 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:59:19,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:19,765 INFO L85 PathProgramCache]: Analyzing trace with hash 462836377, now seen corresponding path program 1 times [2022-12-06 16:59:19,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:19,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812092445] [2022-12-06 16:59:19,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:19,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:20,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 16:59:20,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:20,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812092445] [2022-12-06 16:59:20,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812092445] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:20,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:20,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 16:59:20,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686323140] [2022-12-06 16:59:20,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:20,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 16:59:20,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:20,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 16:59:20,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-12-06 16:59:20,496 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 16:59:20,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 255 transitions, 2542 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:20,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:20,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 16:59:20,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:21,532 INFO L130 PetriNetUnfolder]: 2055/4402 cut-off events. [2022-12-06 16:59:21,535 INFO L131 PetriNetUnfolder]: For 14502/14520 co-relation queries the response was YES. [2022-12-06 16:59:21,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15684 conditions, 4402 events. 2055/4402 cut-off events. For 14502/14520 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 31017 event pairs, 534 based on Foata normal form. 2/4024 useless extension candidates. Maximal degree in co-relation 12347. Up to 1677 conditions per place. [2022-12-06 16:59:21,558 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 171 selfloop transitions, 44 changer transitions 95/394 dead transitions. [2022-12-06 16:59:21,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 394 transitions, 3838 flow [2022-12-06 16:59:21,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-06 16:59:21,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-06 16:59:21,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2990 transitions. [2022-12-06 16:59:21,565 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.606613917630351 [2022-12-06 16:59:21,566 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 102 predicate places. [2022-12-06 16:59:21,566 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 394 transitions, 3838 flow [2022-12-06 16:59:21,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:21,567 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:21,567 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] [2022-12-06 16:59:21,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-06 16:59:21,567 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:59:21,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:21,568 INFO L85 PathProgramCache]: Analyzing trace with hash -300213525, now seen corresponding path program 2 times [2022-12-06 16:59:21,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:21,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446181642] [2022-12-06 16:59:21,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:21,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:22,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 16:59:22,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:22,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446181642] [2022-12-06 16:59:22,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446181642] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:22,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:22,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 16:59:22,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274327715] [2022-12-06 16:59:22,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:22,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 16:59:22,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:22,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 16:59:22,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-12-06 16:59:22,300 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 16:59:22,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 394 transitions, 3838 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:22,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:22,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 16:59:22,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:23,432 INFO L130 PetriNetUnfolder]: 2199/4671 cut-off events. [2022-12-06 16:59:23,432 INFO L131 PetriNetUnfolder]: For 16522/16618 co-relation queries the response was YES. [2022-12-06 16:59:23,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20398 conditions, 4671 events. 2199/4671 cut-off events. For 16522/16618 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 33189 event pairs, 355 based on Foata normal form. 4/4286 useless extension candidates. Maximal degree in co-relation 16571. Up to 1677 conditions per place. [2022-12-06 16:59:23,456 INFO L137 encePairwiseOnDemand]: 129/159 looper letters, 310 selfloop transitions, 102 changer transitions 99/595 dead transitions. [2022-12-06 16:59:23,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 595 transitions, 6330 flow [2022-12-06 16:59:23,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-06 16:59:23,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-06 16:59:23,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3371 transitions. [2022-12-06 16:59:23,460 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6057502246181491 [2022-12-06 16:59:23,460 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 136 predicate places. [2022-12-06 16:59:23,460 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 595 transitions, 6330 flow [2022-12-06 16:59:23,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:23,461 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:23,461 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] [2022-12-06 16:59:23,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-06 16:59:23,461 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:59:23,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:23,462 INFO L85 PathProgramCache]: Analyzing trace with hash 509857855, now seen corresponding path program 1 times [2022-12-06 16:59:23,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:23,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205686156] [2022-12-06 16:59:23,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:23,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:24,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 16:59:24,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:24,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205686156] [2022-12-06 16:59:24,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205686156] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:24,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:24,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 16:59:24,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790785179] [2022-12-06 16:59:24,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:24,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 16:59:24,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:24,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 16:59:24,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-12-06 16:59:24,020 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 16:59:24,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 595 transitions, 6330 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:24,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:24,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 16:59:24,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:25,377 INFO L130 PetriNetUnfolder]: 2949/6035 cut-off events. [2022-12-06 16:59:25,378 INFO L131 PetriNetUnfolder]: For 22961/23186 co-relation queries the response was YES. [2022-12-06 16:59:25,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31949 conditions, 6035 events. 2949/6035 cut-off events. For 22961/23186 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 45431 event pairs, 192 based on Foata normal form. 14/5560 useless extension candidates. Maximal degree in co-relation 26725. Up to 2754 conditions per place. [2022-12-06 16:59:25,412 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 460 selfloop transitions, 121 changer transitions 99/764 dead transitions. [2022-12-06 16:59:25,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 764 transitions, 9529 flow [2022-12-06 16:59:25,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-06 16:59:25,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-06 16:59:25,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3527 transitions. [2022-12-06 16:59:25,416 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.61617749825297 [2022-12-06 16:59:25,416 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 171 predicate places. [2022-12-06 16:59:25,416 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 764 transitions, 9529 flow [2022-12-06 16:59:25,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:25,417 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:25,417 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] [2022-12-06 16:59:25,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-06 16:59:25,417 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:59:25,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:25,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1494685017, now seen corresponding path program 2 times [2022-12-06 16:59:25,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:25,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645548756] [2022-12-06 16:59:25,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:25,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:25,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 16:59:25,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:25,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645548756] [2022-12-06 16:59:25,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645548756] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:25,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:25,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 16:59:25,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746260532] [2022-12-06 16:59:25,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:25,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 16:59:25,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:25,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 16:59:25,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-12-06 16:59:25,993 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 16:59:25,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 764 transitions, 9529 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:25,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:25,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 16:59:25,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:27,375 INFO L130 PetriNetUnfolder]: 2970/6083 cut-off events. [2022-12-06 16:59:27,378 INFO L131 PetriNetUnfolder]: For 25023/25257 co-relation queries the response was YES. [2022-12-06 16:59:27,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37305 conditions, 6083 events. 2970/6083 cut-off events. For 25023/25257 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 46067 event pairs, 155 based on Foata normal form. 6/5601 useless extension candidates. Maximal degree in co-relation 31465. Up to 2754 conditions per place. [2022-12-06 16:59:27,418 INFO L137 encePairwiseOnDemand]: 129/159 looper letters, 499 selfloop transitions, 112 changer transitions 144/839 dead transitions. [2022-12-06 16:59:27,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 839 transitions, 11791 flow [2022-12-06 16:59:27,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-06 16:59:27,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-06 16:59:27,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2970 transitions. [2022-12-06 16:59:27,425 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6025562994522216 [2022-12-06 16:59:27,425 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 201 predicate places. [2022-12-06 16:59:27,426 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 839 transitions, 11791 flow [2022-12-06 16:59:27,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:27,427 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:27,427 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] [2022-12-06 16:59:27,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-06 16:59:27,427 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:59:27,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:27,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1894562987, now seen corresponding path program 3 times [2022-12-06 16:59:27,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:27,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084708739] [2022-12-06 16:59:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:27,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:28,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 16:59:28,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:28,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084708739] [2022-12-06 16:59:28,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084708739] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:28,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:28,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 16:59:28,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167641404] [2022-12-06 16:59:28,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:28,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 16:59:28,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:28,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 16:59:28,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-12-06 16:59:28,061 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 16:59:28,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 839 transitions, 11791 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:28,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:28,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 16:59:28,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:29,439 INFO L130 PetriNetUnfolder]: 3382/6821 cut-off events. [2022-12-06 16:59:29,440 INFO L131 PetriNetUnfolder]: For 30217/30554 co-relation queries the response was YES. [2022-12-06 16:59:29,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47302 conditions, 6821 events. 3382/6821 cut-off events. For 30217/30554 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 52353 event pairs, 147 based on Foata normal form. 11/6267 useless extension candidates. Maximal degree in co-relation 40345. Up to 3268 conditions per place. [2022-12-06 16:59:29,481 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 619 selfloop transitions, 147 changer transitions 149/999 dead transitions. [2022-12-06 16:59:29,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 999 transitions, 15763 flow [2022-12-06 16:59:29,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-06 16:59:29,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-06 16:59:29,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3115 transitions. [2022-12-06 16:59:29,485 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6122248427672956 [2022-12-06 16:59:29,486 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 232 predicate places. [2022-12-06 16:59:29,486 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 999 transitions, 15763 flow [2022-12-06 16:59:29,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:29,486 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:29,486 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] [2022-12-06 16:59:29,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-06 16:59:29,487 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:59:29,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:29,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1920774959, now seen corresponding path program 4 times [2022-12-06 16:59:29,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:29,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180831068] [2022-12-06 16:59:29,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:29,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:30,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 16:59:30,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:30,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180831068] [2022-12-06 16:59:30,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180831068] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:30,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:30,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 16:59:30,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877845481] [2022-12-06 16:59:30,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:30,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 16:59:30,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:30,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 16:59:30,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-12-06 16:59:30,080 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 16:59:30,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 999 transitions, 15763 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:30,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:30,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 16:59:30,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:31,567 INFO L130 PetriNetUnfolder]: 3386/6890 cut-off events. [2022-12-06 16:59:31,567 INFO L131 PetriNetUnfolder]: For 34374/34763 co-relation queries the response was YES. [2022-12-06 16:59:31,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53274 conditions, 6890 events. 3386/6890 cut-off events. For 34374/34763 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 53280 event pairs, 151 based on Foata normal form. 13/6342 useless extension candidates. Maximal degree in co-relation 45637. Up to 3268 conditions per place. [2022-12-06 16:59:31,614 INFO L137 encePairwiseOnDemand]: 126/159 looper letters, 637 selfloop transitions, 127 changer transitions 155/1003 dead transitions. [2022-12-06 16:59:31,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 1003 transitions, 17601 flow [2022-12-06 16:59:31,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-06 16:59:31,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-06 16:59:31,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2520 transitions. [2022-12-06 16:59:31,617 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6095791001451378 [2022-12-06 16:59:31,618 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 257 predicate places. [2022-12-06 16:59:31,618 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 1003 transitions, 17601 flow [2022-12-06 16:59:31,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:31,618 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:31,619 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] [2022-12-06 16:59:31,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-06 16:59:31,619 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:59:31,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:31,619 INFO L85 PathProgramCache]: Analyzing trace with hash -2006375923, now seen corresponding path program 5 times [2022-12-06 16:59:31,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:31,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742456810] [2022-12-06 16:59:31,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:31,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:32,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 16:59:32,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:32,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742456810] [2022-12-06 16:59:32,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742456810] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:32,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:32,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 16:59:32,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111521206] [2022-12-06 16:59:32,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:32,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 16:59:32,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:32,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 16:59:32,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-12-06 16:59:32,174 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 16:59:32,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 1003 transitions, 17601 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:32,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:32,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 16:59:32,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:33,677 INFO L130 PetriNetUnfolder]: 3329/6769 cut-off events. [2022-12-06 16:59:33,678 INFO L131 PetriNetUnfolder]: For 37387/37888 co-relation queries the response was YES. [2022-12-06 16:59:33,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58483 conditions, 6769 events. 3329/6769 cut-off events. For 37387/37888 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 52362 event pairs, 159 based on Foata normal form. 11/6258 useless extension candidates. Maximal degree in co-relation 50207. Up to 3238 conditions per place. [2022-12-06 16:59:33,723 INFO L137 encePairwiseOnDemand]: 126/159 looper letters, 643 selfloop transitions, 135 changer transitions 155/1017 dead transitions. [2022-12-06 16:59:33,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 1017 transitions, 19787 flow [2022-12-06 16:59:33,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-06 16:59:33,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-06 16:59:33,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2617 transitions. [2022-12-06 16:59:33,726 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6095970184020498 [2022-12-06 16:59:33,726 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 283 predicate places. [2022-12-06 16:59:33,726 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 1017 transitions, 19787 flow [2022-12-06 16:59:33,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:33,727 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:33,727 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] [2022-12-06 16:59:33,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-06 16:59:33,727 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:59:33,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:33,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1011251819, now seen corresponding path program 3 times [2022-12-06 16:59:33,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:33,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133208128] [2022-12-06 16:59:33,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:33,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:34,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 16:59:34,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:34,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133208128] [2022-12-06 16:59:34,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133208128] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:34,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:34,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 16:59:34,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294241242] [2022-12-06 16:59:34,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:34,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 16:59:34,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:34,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 16:59:34,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-12-06 16:59:34,317 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 16:59:34,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 1017 transitions, 19787 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:34,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:34,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 16:59:34,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:35,769 INFO L130 PetriNetUnfolder]: 3338/6790 cut-off events. [2022-12-06 16:59:35,769 INFO L131 PetriNetUnfolder]: For 41106/41667 co-relation queries the response was YES. [2022-12-06 16:59:35,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64420 conditions, 6790 events. 3338/6790 cut-off events. For 41106/41667 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 52534 event pairs, 147 based on Foata normal form. 11/6278 useless extension candidates. Maximal degree in co-relation 55429. Up to 3238 conditions per place. [2022-12-06 16:59:35,943 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 663 selfloop transitions, 114 changer transitions 164/1025 dead transitions. [2022-12-06 16:59:35,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 1025 transitions, 21766 flow [2022-12-06 16:59:35,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-06 16:59:35,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-06 16:59:35,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2508 transitions. [2022-12-06 16:59:35,946 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6066763425253991 [2022-12-06 16:59:35,946 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 308 predicate places. [2022-12-06 16:59:35,946 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 1025 transitions, 21766 flow [2022-12-06 16:59:35,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:35,947 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:35,947 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] [2022-12-06 16:59:35,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-06 16:59:35,947 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:59:35,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:35,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1067492127, now seen corresponding path program 4 times [2022-12-06 16:59:35,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:35,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662596871] [2022-12-06 16:59:35,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:35,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:36,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 16:59:36,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:36,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662596871] [2022-12-06 16:59:36,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662596871] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:36,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:36,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 16:59:36,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575608160] [2022-12-06 16:59:36,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:36,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 16:59:36,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:36,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 16:59:36,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-12-06 16:59:36,455 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 16:59:36,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 1025 transitions, 21766 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:36,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:36,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 16:59:36,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:38,204 INFO L130 PetriNetUnfolder]: 3356/6844 cut-off events. [2022-12-06 16:59:38,204 INFO L131 PetriNetUnfolder]: For 46606/47213 co-relation queries the response was YES. [2022-12-06 16:59:38,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70635 conditions, 6844 events. 3356/6844 cut-off events. For 46606/47213 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 53173 event pairs, 155 based on Foata normal form. 11/6333 useless extension candidates. Maximal degree in co-relation 60811. Up to 3238 conditions per place. [2022-12-06 16:59:38,257 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 663 selfloop transitions, 108 changer transitions 185/1040 dead transitions. [2022-12-06 16:59:38,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 1040 transitions, 23959 flow [2022-12-06 16:59:38,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-06 16:59:38,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-06 16:59:38,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2788 transitions. [2022-12-06 16:59:38,260 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6046410756885708 [2022-12-06 16:59:38,260 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 336 predicate places. [2022-12-06 16:59:38,260 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 1040 transitions, 23959 flow [2022-12-06 16:59:38,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:38,261 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:38,261 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] [2022-12-06 16:59:38,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-06 16:59:38,261 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:59:38,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:38,262 INFO L85 PathProgramCache]: Analyzing trace with hash -271893781, now seen corresponding path program 5 times [2022-12-06 16:59:38,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:38,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681429965] [2022-12-06 16:59:38,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:38,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:38,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 16:59:38,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:38,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681429965] [2022-12-06 16:59:38,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681429965] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:38,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:38,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 16:59:38,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433710264] [2022-12-06 16:59:38,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:38,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 16:59:38,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:38,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 16:59:38,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-12-06 16:59:38,912 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 16:59:38,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 1040 transitions, 23959 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:38,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:38,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 16:59:38,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:40,586 INFO L130 PetriNetUnfolder]: 3401/6929 cut-off events. [2022-12-06 16:59:40,587 INFO L131 PetriNetUnfolder]: For 51662/52343 co-relation queries the response was YES. [2022-12-06 16:59:40,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77371 conditions, 6929 events. 3401/6929 cut-off events. For 51662/52343 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 54019 event pairs, 155 based on Foata normal form. 11/6414 useless extension candidates. Maximal degree in co-relation 66860. Up to 3238 conditions per place. [2022-12-06 16:59:40,628 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 673 selfloop transitions, 130 changer transitions 185/1072 dead transitions. [2022-12-06 16:59:40,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 1072 transitions, 26663 flow [2022-12-06 16:59:40,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-06 16:59:40,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-06 16:59:40,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2619 transitions. [2022-12-06 16:59:40,631 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.610062893081761 [2022-12-06 16:59:40,632 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 362 predicate places. [2022-12-06 16:59:40,632 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 1072 transitions, 26663 flow [2022-12-06 16:59:40,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:40,632 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:40,632 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] [2022-12-06 16:59:40,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-06 16:59:40,633 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:59:40,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:40,633 INFO L85 PathProgramCache]: Analyzing trace with hash -963166257, now seen corresponding path program 6 times [2022-12-06 16:59:40,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:40,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099446101] [2022-12-06 16:59:40,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:40,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:41,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 16:59:41,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:41,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099446101] [2022-12-06 16:59:41,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099446101] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:41,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:41,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 16:59:41,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355346582] [2022-12-06 16:59:41,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:41,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 16:59:41,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:41,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 16:59:41,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-06 16:59:41,169 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 16:59:41,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 1072 transitions, 26663 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:41,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:41,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 16:59:41,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:42,911 INFO L130 PetriNetUnfolder]: 3492/7081 cut-off events. [2022-12-06 16:59:42,912 INFO L131 PetriNetUnfolder]: For 56325/57131 co-relation queries the response was YES. [2022-12-06 16:59:42,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85098 conditions, 7081 events. 3492/7081 cut-off events. For 56325/57131 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 55230 event pairs, 155 based on Foata normal form. 6/6541 useless extension candidates. Maximal degree in co-relation 73901. Up to 3238 conditions per place. [2022-12-06 16:59:42,961 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 726 selfloop transitions, 130 changer transitions 207/1147 dead transitions. [2022-12-06 16:59:42,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1147 transitions, 30463 flow [2022-12-06 16:59:42,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-06 16:59:42,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-06 16:59:42,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2790 transitions. [2022-12-06 16:59:42,975 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.605074821080026 [2022-12-06 16:59:42,975 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 390 predicate places. [2022-12-06 16:59:42,976 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 1147 transitions, 30463 flow [2022-12-06 16:59:42,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:42,976 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:42,976 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] [2022-12-06 16:59:42,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-06 16:59:42,976 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:59:42,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:42,977 INFO L85 PathProgramCache]: Analyzing trace with hash 163722957, now seen corresponding path program 7 times [2022-12-06 16:59:42,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:42,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337969008] [2022-12-06 16:59:42,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:42,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:43,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 16:59:43,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:43,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337969008] [2022-12-06 16:59:43,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337969008] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:43,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:43,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 16:59:43,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346803960] [2022-12-06 16:59:43,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:43,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 16:59:43,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:43,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 16:59:43,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-12-06 16:59:43,518 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 16:59:43,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 1147 transitions, 30463 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:43,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:43,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 16:59:43,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:45,314 INFO L130 PetriNetUnfolder]: 3666/7391 cut-off events. [2022-12-06 16:59:45,314 INFO L131 PetriNetUnfolder]: For 65142/66143 co-relation queries the response was YES. [2022-12-06 16:59:45,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95265 conditions, 7391 events. 3666/7391 cut-off events. For 65142/66143 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 58198 event pairs, 155 based on Foata normal form. 8/6835 useless extension candidates. Maximal degree in co-relation 83015. Up to 3452 conditions per place. [2022-12-06 16:59:45,362 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 776 selfloop transitions, 160 changer transitions 207/1227 dead transitions. [2022-12-06 16:59:45,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 1227 transitions, 34991 flow [2022-12-06 16:59:45,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-06 16:59:45,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-06 16:59:45,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2900 transitions. [2022-12-06 16:59:45,365 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6079664570230608 [2022-12-06 16:59:45,365 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 419 predicate places. [2022-12-06 16:59:45,365 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 1227 transitions, 34991 flow [2022-12-06 16:59:45,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:45,366 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:45,366 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] [2022-12-06 16:59:45,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-06 16:59:45,366 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:59:45,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:45,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1059729489, now seen corresponding path program 8 times [2022-12-06 16:59:45,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:45,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851065750] [2022-12-06 16:59:45,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:45,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:45,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 16:59:45,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:45,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851065750] [2022-12-06 16:59:45,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851065750] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:45,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:45,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 16:59:45,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704323804] [2022-12-06 16:59:45,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:45,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 16:59:45,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:45,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 16:59:45,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-06 16:59:45,814 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 16:59:45,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 1227 transitions, 34991 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:45,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:45,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 16:59:45,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:47,740 INFO L130 PetriNetUnfolder]: 3709/7458 cut-off events. [2022-12-06 16:59:47,741 INFO L131 PetriNetUnfolder]: For 67070/68234 co-relation queries the response was YES. [2022-12-06 16:59:47,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102564 conditions, 7458 events. 3709/7458 cut-off events. For 67070/68234 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 58723 event pairs, 259 based on Foata normal form. 6/6890 useless extension candidates. Maximal degree in co-relation 89609. Up to 3452 conditions per place. [2022-12-06 16:59:47,804 INFO L137 encePairwiseOnDemand]: 126/159 looper letters, 813 selfloop transitions, 149 changer transitions 218/1264 dead transitions. [2022-12-06 16:59:47,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 1264 transitions, 38265 flow [2022-12-06 16:59:47,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-06 16:59:47,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-06 16:59:47,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2612 transitions. [2022-12-06 16:59:47,807 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.608432331702772 [2022-12-06 16:59:47,807 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 445 predicate places. [2022-12-06 16:59:47,807 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 1264 transitions, 38265 flow [2022-12-06 16:59:47,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:47,808 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:47,808 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] [2022-12-06 16:59:47,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-06 16:59:47,808 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:59:47,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:47,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1095091079, now seen corresponding path program 9 times [2022-12-06 16:59:47,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:47,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509192798] [2022-12-06 16:59:47,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:47,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:48,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 16:59:48,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:48,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509192798] [2022-12-06 16:59:48,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509192798] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:59:48,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327302135] [2022-12-06 16:59:48,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 16:59:48,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:59:48,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:59:48,350 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) [2022-12-06 16:59:48,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-06 16:59:48,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-06 16:59:48,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 16:59:48,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 52 conjunts are in the unsatisfiable core [2022-12-06 16:59:48,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:59:49,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-06 16:59:49,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 16:59:49,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 16:59:49,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-06 16:59:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 16:59:49,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:59:50,044 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 16:59:50,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 76 [2022-12-06 16:59:50,086 INFO L321 Elim1Store]: treesize reduction 32, result has 62.4 percent of original size [2022-12-06 16:59:50,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1676 treesize of output 1472 [2022-12-06 16:59:50,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-06 16:59:50,104 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-06 16:59:50,118 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 16:59:50,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 1420 treesize of output 1276 [2022-12-06 16:59:50,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-06 16:59:50,132 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-06 16:59:50,149 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 16:59:50,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 1228 treesize of output 892 [2022-12-06 16:59:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 16:59:51,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327302135] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:59:51,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:59:51,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 15] total 47 [2022-12-06 16:59:51,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392621236] [2022-12-06 16:59:51,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:59:51,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-06 16:59:51,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:51,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-06 16:59:51,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=1703, Unknown=35, NotChecked=0, Total=2162 [2022-12-06 16:59:51,854 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 159 [2022-12-06 16:59:51,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 1264 transitions, 38265 flow. Second operand has 47 states, 47 states have (on average 75.38297872340425) internal successors, (3543), 47 states have internal predecessors, (3543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:51,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:51,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 159 [2022-12-06 16:59:51,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:55,413 INFO L130 PetriNetUnfolder]: 4211/8395 cut-off events. [2022-12-06 16:59:55,413 INFO L131 PetriNetUnfolder]: For 86139/87684 co-relation queries the response was YES. [2022-12-06 16:59:55,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122649 conditions, 8395 events. 4211/8395 cut-off events. For 86139/87684 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 67440 event pairs, 131 based on Foata normal form. 26/7783 useless extension candidates. Maximal degree in co-relation 108048. Up to 4063 conditions per place. [2022-12-06 16:59:55,477 INFO L137 encePairwiseOnDemand]: 121/159 looper letters, 931 selfloop transitions, 297 changer transitions 246/1539 dead transitions. [2022-12-06 16:59:55,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 1539 transitions, 50003 flow [2022-12-06 16:59:55,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-06 16:59:55,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-12-06 16:59:55,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 4294 transitions. [2022-12-06 16:59:55,480 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5001164686699278 [2022-12-06 16:59:55,481 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 498 predicate places. [2022-12-06 16:59:55,481 INFO L495 AbstractCegarLoop]: Abstraction has has 639 places, 1539 transitions, 50003 flow [2022-12-06 16:59:55,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 75.38297872340425) internal successors, (3543), 47 states have internal predecessors, (3543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:55,482 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:55,482 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] [2022-12-06 16:59:55,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-06 16:59:55,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:59:55,687 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:59:55,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:55,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1618765457, now seen corresponding path program 10 times [2022-12-06 16:59:55,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:55,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475636696] [2022-12-06 16:59:55,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:55,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 16:59:56,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:56,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475636696] [2022-12-06 16:59:56,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475636696] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:56,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:56,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 16:59:56,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517172811] [2022-12-06 16:59:56,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:56,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 16:59:56,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:56,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 16:59:56,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-12-06 16:59:56,183 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 16:59:56,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 1539 transitions, 50003 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:56,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:56,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 16:59:56,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:58,688 INFO L130 PetriNetUnfolder]: 4292/8548 cut-off events. [2022-12-06 16:59:58,688 INFO L131 PetriNetUnfolder]: For 94825/96334 co-relation queries the response was YES. [2022-12-06 16:59:58,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132295 conditions, 8548 events. 4292/8548 cut-off events. For 94825/96334 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 68797 event pairs, 119 based on Foata normal form. 15/7920 useless extension candidates. Maximal degree in co-relation 116639. Up to 4201 conditions per place. [2022-12-06 16:59:58,757 INFO L137 encePairwiseOnDemand]: 126/159 looper letters, 1054 selfloop transitions, 189 changer transitions 246/1573 dead transitions. [2022-12-06 16:59:58,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 665 places, 1573 transitions, 54157 flow [2022-12-06 16:59:58,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-06 16:59:58,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-06 16:59:58,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2618 transitions. [2022-12-06 16:59:58,759 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6098299557419055 [2022-12-06 16:59:58,759 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 524 predicate places. [2022-12-06 16:59:58,759 INFO L495 AbstractCegarLoop]: Abstraction has has 665 places, 1573 transitions, 54157 flow [2022-12-06 16:59:58,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:58,760 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:58,760 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] [2022-12-06 16:59:58,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-06 16:59:58,760 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:59:58,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:58,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1801569607, now seen corresponding path program 11 times [2022-12-06 16:59:58,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:58,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286374604] [2022-12-06 16:59:58,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:58,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:59,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 16:59:59,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:59,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286374604] [2022-12-06 16:59:59,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286374604] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:59,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:59,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 16:59:59,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143304557] [2022-12-06 16:59:59,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:59,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 16:59:59,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:59,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 16:59:59,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-12-06 16:59:59,186 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 16:59:59,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 665 places, 1573 transitions, 54157 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:59,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:59,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 16:59:59,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:00:01,862 INFO L130 PetriNetUnfolder]: 4284/8532 cut-off events. [2022-12-06 17:00:01,862 INFO L131 PetriNetUnfolder]: For 102909/104646 co-relation queries the response was YES. [2022-12-06 17:00:01,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139530 conditions, 8532 events. 4284/8532 cut-off events. For 102909/104646 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 68696 event pairs, 127 based on Foata normal form. 14/7911 useless extension candidates. Maximal degree in co-relation 123095. Up to 4201 conditions per place. [2022-12-06 17:00:01,936 INFO L137 encePairwiseOnDemand]: 126/159 looper letters, 1079 selfloop transitions, 156 changer transitions 251/1570 dead transitions. [2022-12-06 17:00:01,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 691 places, 1570 transitions, 56985 flow [2022-12-06 17:00:01,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-06 17:00:01,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-06 17:00:01,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2616 transitions. [2022-12-06 17:00:01,938 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6093640810621943 [2022-12-06 17:00:01,938 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 550 predicate places. [2022-12-06 17:00:01,938 INFO L495 AbstractCegarLoop]: Abstraction has has 691 places, 1570 transitions, 56985 flow [2022-12-06 17:00:01,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:01,939 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:00:01,939 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] [2022-12-06 17:00:01,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-06 17:00:01,939 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:00:01,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:00:01,939 INFO L85 PathProgramCache]: Analyzing trace with hash -385840015, now seen corresponding path program 12 times [2022-12-06 17:00:01,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:00:01,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330441460] [2022-12-06 17:00:01,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:00:01,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:00:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:00:02,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:00:02,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:00:02,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330441460] [2022-12-06 17:00:02,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330441460] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:00:02,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:00:02,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 17:00:02,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528204917] [2022-12-06 17:00:02,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:00:02,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 17:00:02,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:00:02,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 17:00:02,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-12-06 17:00:02,403 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:00:02,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 691 places, 1570 transitions, 56985 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:02,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:00:02,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:00:02,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:00:04,953 INFO L130 PetriNetUnfolder]: 4218/8424 cut-off events. [2022-12-06 17:00:04,953 INFO L131 PetriNetUnfolder]: For 110436/112355 co-relation queries the response was YES. [2022-12-06 17:00:04,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145215 conditions, 8424 events. 4218/8424 cut-off events. For 110436/112355 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 68234 event pairs, 131 based on Foata normal form. 13/7841 useless extension candidates. Maximal degree in co-relation 128077. Up to 4167 conditions per place. [2022-12-06 17:00:05,029 INFO L137 encePairwiseOnDemand]: 126/159 looper letters, 1069 selfloop transitions, 178 changer transitions 251/1582 dead transitions. [2022-12-06 17:00:05,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 718 places, 1582 transitions, 60497 flow [2022-12-06 17:00:05,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-06 17:00:05,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-06 17:00:05,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2713 transitions. [2022-12-06 17:00:05,031 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6093890386343217 [2022-12-06 17:00:05,031 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 577 predicate places. [2022-12-06 17:00:05,031 INFO L495 AbstractCegarLoop]: Abstraction has has 718 places, 1582 transitions, 60497 flow [2022-12-06 17:00:05,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:05,032 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:00:05,032 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] [2022-12-06 17:00:05,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-06 17:00:05,032 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:00:05,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:00:05,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1883673007, now seen corresponding path program 6 times [2022-12-06 17:00:05,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:00:05,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887438304] [2022-12-06 17:00:05,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:00:05,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:00:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:00:05,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:00:05,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:00:05,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887438304] [2022-12-06 17:00:05,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887438304] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:00:05,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:00:05,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 17:00:05,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115837715] [2022-12-06 17:00:05,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:00:05,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 17:00:05,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:00:05,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 17:00:05,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-12-06 17:00:05,484 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:00:05,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 718 places, 1582 transitions, 60497 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:05,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:00:05,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:00:05,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:00:08,135 INFO L130 PetriNetUnfolder]: 4266/8515 cut-off events. [2022-12-06 17:00:08,135 INFO L131 PetriNetUnfolder]: For 119695/121736 co-relation queries the response was YES. [2022-12-06 17:00:08,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154103 conditions, 8515 events. 4266/8515 cut-off events. For 119695/121736 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 68868 event pairs, 131 based on Foata normal form. 9/7924 useless extension candidates. Maximal degree in co-relation 136189. Up to 4167 conditions per place. [2022-12-06 17:00:08,224 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1092 selfloop transitions, 179 changer transitions 251/1606 dead transitions. [2022-12-06 17:00:08,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 745 places, 1606 transitions, 64433 flow [2022-12-06 17:00:08,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-06 17:00:08,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-06 17:00:08,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2709 transitions. [2022-12-06 17:00:08,227 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6084905660377359 [2022-12-06 17:00:08,227 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 604 predicate places. [2022-12-06 17:00:08,227 INFO L495 AbstractCegarLoop]: Abstraction has has 745 places, 1606 transitions, 64433 flow [2022-12-06 17:00:08,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:08,227 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:00:08,227 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] [2022-12-06 17:00:08,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-06 17:00:08,228 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:00:08,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:00:08,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1983130313, now seen corresponding path program 7 times [2022-12-06 17:00:08,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:00:08,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307206168] [2022-12-06 17:00:08,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:00:08,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:00:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:00:08,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:00:08,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:00:08,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307206168] [2022-12-06 17:00:08,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307206168] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:00:08,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:00:08,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 17:00:08,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756729810] [2022-12-06 17:00:08,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:00:08,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 17:00:08,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:00:08,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 17:00:08,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-12-06 17:00:08,963 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:00:08,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 745 places, 1606 transitions, 64433 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:08,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:00:08,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:00:08,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:00:12,094 INFO L130 PetriNetUnfolder]: 4557/8997 cut-off events. [2022-12-06 17:00:12,095 INFO L131 PetriNetUnfolder]: For 130266/132359 co-relation queries the response was YES. [2022-12-06 17:00:12,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171341 conditions, 8997 events. 4557/8997 cut-off events. For 130266/132359 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 73126 event pairs, 127 based on Foata normal form. 7/8350 useless extension candidates. Maximal degree in co-relation 152653. Up to 4167 conditions per place. [2022-12-06 17:00:12,192 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1163 selfloop transitions, 204 changer transitions 251/1702 dead transitions. [2022-12-06 17:00:12,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 776 places, 1702 transitions, 71613 flow [2022-12-06 17:00:12,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-06 17:00:12,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-06 17:00:12,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3102 transitions. [2022-12-06 17:00:12,195 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6096698113207547 [2022-12-06 17:00:12,195 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 635 predicate places. [2022-12-06 17:00:12,195 INFO L495 AbstractCegarLoop]: Abstraction has has 776 places, 1702 transitions, 71613 flow [2022-12-06 17:00:12,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:12,196 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:00:12,196 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] [2022-12-06 17:00:12,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-06 17:00:12,196 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:00:12,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:00:12,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1883097027, now seen corresponding path program 8 times [2022-12-06 17:00:12,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:00:12,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549604869] [2022-12-06 17:00:12,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:00:12,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:00:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:00:12,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:00:12,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:00:12,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549604869] [2022-12-06 17:00:12,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549604869] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:00:12,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:00:12,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:00:12,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092770252] [2022-12-06 17:00:12,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:00:12,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:00:12,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:00:12,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:00:12,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:00:12,678 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:00:12,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 776 places, 1702 transitions, 71613 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:12,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:00:12,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:00:12,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:00:15,672 INFO L130 PetriNetUnfolder]: 4563/9032 cut-off events. [2022-12-06 17:00:15,673 INFO L131 PetriNetUnfolder]: For 141851/144264 co-relation queries the response was YES. [2022-12-06 17:00:15,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179450 conditions, 9032 events. 4563/9032 cut-off events. For 141851/144264 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 73805 event pairs, 131 based on Foata normal form. 9/8387 useless extension candidates. Maximal degree in co-relation 159896. Up to 4167 conditions per place. [2022-12-06 17:00:15,769 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1215 selfloop transitions, 149 changer transitions 259/1707 dead transitions. [2022-12-06 17:00:15,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 801 places, 1707 transitions, 75028 flow [2022-12-06 17:00:15,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-06 17:00:15,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-06 17:00:15,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2507 transitions. [2022-12-06 17:00:15,771 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6064344460570875 [2022-12-06 17:00:15,772 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 660 predicate places. [2022-12-06 17:00:15,772 INFO L495 AbstractCegarLoop]: Abstraction has has 801 places, 1707 transitions, 75028 flow [2022-12-06 17:00:15,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:15,772 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:00:15,772 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] [2022-12-06 17:00:15,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-06 17:00:15,773 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:00:15,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:00:15,773 INFO L85 PathProgramCache]: Analyzing trace with hash -121508445, now seen corresponding path program 9 times [2022-12-06 17:00:15,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:00:15,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239931822] [2022-12-06 17:00:15,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:00:15,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:00:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:00:16,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:00:16,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:00:16,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239931822] [2022-12-06 17:00:16,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239931822] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:00:16,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:00:16,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:00:16,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460594989] [2022-12-06 17:00:16,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:00:16,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:00:16,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:00:16,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:00:16,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:00:16,221 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:00:16,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 801 places, 1707 transitions, 75028 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:16,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:00:16,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:00:16,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:00:19,239 INFO L130 PetriNetUnfolder]: 4572/9061 cut-off events. [2022-12-06 17:00:19,239 INFO L131 PetriNetUnfolder]: For 153533/155916 co-relation queries the response was YES. [2022-12-06 17:00:19,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187682 conditions, 9061 events. 4572/9061 cut-off events. For 153533/155916 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 74034 event pairs, 127 based on Foata normal form. 9/8416 useless extension candidates. Maximal degree in co-relation 167249. Up to 4167 conditions per place. [2022-12-06 17:00:19,539 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1217 selfloop transitions, 146 changer transitions 268/1715 dead transitions. [2022-12-06 17:00:19,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 827 places, 1715 transitions, 78595 flow [2022-12-06 17:00:19,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-06 17:00:19,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-06 17:00:19,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2604 transitions. [2022-12-06 17:00:19,541 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6065688329839273 [2022-12-06 17:00:19,544 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 686 predicate places. [2022-12-06 17:00:19,544 INFO L495 AbstractCegarLoop]: Abstraction has has 827 places, 1715 transitions, 78595 flow [2022-12-06 17:00:19,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:19,554 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:00:19,554 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] [2022-12-06 17:00:19,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-06 17:00:19,554 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:00:19,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:00:19,555 INFO L85 PathProgramCache]: Analyzing trace with hash -120932465, now seen corresponding path program 10 times [2022-12-06 17:00:19,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:00:19,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777498218] [2022-12-06 17:00:19,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:00:19,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:00:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:00:19,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:00:19,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:00:19,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777498218] [2022-12-06 17:00:19,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777498218] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:00:19,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:00:19,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 17:00:19,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968833446] [2022-12-06 17:00:19,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:00:19,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 17:00:19,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:00:19,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 17:00:19,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-12-06 17:00:19,985 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:00:19,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 827 places, 1715 transitions, 78595 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:19,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:00:19,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:00:19,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:00:23,172 INFO L130 PetriNetUnfolder]: 4461/8849 cut-off events. [2022-12-06 17:00:23,172 INFO L131 PetriNetUnfolder]: For 161668/164269 co-relation queries the response was YES. [2022-12-06 17:00:23,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191559 conditions, 8849 events. 4461/8849 cut-off events. For 161668/164269 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 71881 event pairs, 127 based on Foata normal form. 7/8240 useless extension candidates. Maximal degree in co-relation 170344. Up to 4167 conditions per place. [2022-12-06 17:00:23,269 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1167 selfloop transitions, 184 changer transitions 268/1703 dead transitions. [2022-12-06 17:00:23,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 854 places, 1703 transitions, 81241 flow [2022-12-06 17:00:23,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-06 17:00:23,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-06 17:00:23,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2715 transitions. [2022-12-06 17:00:23,272 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6098382749326146 [2022-12-06 17:00:23,273 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 713 predicate places. [2022-12-06 17:00:23,273 INFO L495 AbstractCegarLoop]: Abstraction has has 854 places, 1703 transitions, 81241 flow [2022-12-06 17:00:23,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:23,275 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:00:23,275 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] [2022-12-06 17:00:23,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-06 17:00:23,275 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:00:23,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:00:23,275 INFO L85 PathProgramCache]: Analyzing trace with hash -916530811, now seen corresponding path program 11 times [2022-12-06 17:00:23,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:00:23,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866591198] [2022-12-06 17:00:23,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:00:23,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:00:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:00:23,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:00:23,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:00:23,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866591198] [2022-12-06 17:00:23,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866591198] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:00:23,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:00:23,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:00:23,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385339406] [2022-12-06 17:00:23,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:00:23,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:00:23,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:00:23,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:00:23,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:00:23,733 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:00:23,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 854 places, 1703 transitions, 81241 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:23,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:00:23,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:00:23,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:00:26,913 INFO L130 PetriNetUnfolder]: 4479/8935 cut-off events. [2022-12-06 17:00:26,913 INFO L131 PetriNetUnfolder]: For 180516/183407 co-relation queries the response was YES. [2022-12-06 17:00:26,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200211 conditions, 8935 events. 4479/8935 cut-off events. For 180516/183407 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 73031 event pairs, 123 based on Foata normal form. 13/8331 useless extension candidates. Maximal degree in co-relation 177887. Up to 4167 conditions per place. [2022-12-06 17:00:27,015 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1206 selfloop transitions, 139 changer transitions 289/1718 dead transitions. [2022-12-06 17:00:27,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 882 places, 1718 transitions, 85210 flow [2022-12-06 17:00:27,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-06 17:00:27,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-06 17:00:27,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2786 transitions. [2022-12-06 17:00:27,017 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6042073302971156 [2022-12-06 17:00:27,017 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 741 predicate places. [2022-12-06 17:00:27,017 INFO L495 AbstractCegarLoop]: Abstraction has has 882 places, 1718 transitions, 85210 flow [2022-12-06 17:00:27,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:27,018 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:00:27,018 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] [2022-12-06 17:00:27,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-06 17:00:27,018 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:00:27,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:00:27,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1133229355, now seen corresponding path program 13 times [2022-12-06 17:00:27,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:00:27,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33332091] [2022-12-06 17:00:27,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:00:27,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:00:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:00:27,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:00:27,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:00:27,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33332091] [2022-12-06 17:00:27,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33332091] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:00:27,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:00:27,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:00:27,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481214323] [2022-12-06 17:00:27,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:00:27,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:00:27,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:00:27,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:00:27,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:00:27,725 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:00:27,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 882 places, 1718 transitions, 85210 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:27,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:00:27,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:00:27,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:00:31,123 INFO L130 PetriNetUnfolder]: 4541/9029 cut-off events. [2022-12-06 17:00:31,124 INFO L131 PetriNetUnfolder]: For 187987/190812 co-relation queries the response was YES. [2022-12-06 17:00:31,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210407 conditions, 9029 events. 4541/9029 cut-off events. For 187987/190812 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 73905 event pairs, 119 based on Foata normal form. 10/8410 useless extension candidates. Maximal degree in co-relation 187292. Up to 4167 conditions per place. [2022-12-06 17:00:31,224 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1207 selfloop transitions, 180 changer transitions 301/1772 dead transitions. [2022-12-06 17:00:31,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 907 places, 1772 transitions, 91154 flow [2022-12-06 17:00:31,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-06 17:00:31,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-06 17:00:31,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2503 transitions. [2022-12-06 17:00:31,226 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6054668601838413 [2022-12-06 17:00:31,226 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 766 predicate places. [2022-12-06 17:00:31,226 INFO L495 AbstractCegarLoop]: Abstraction has has 907 places, 1772 transitions, 91154 flow [2022-12-06 17:00:31,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:31,227 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:00:31,227 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] [2022-12-06 17:00:31,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-06 17:00:31,227 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:00:31,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:00:31,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1736424083, now seen corresponding path program 14 times [2022-12-06 17:00:31,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:00:31,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224983070] [2022-12-06 17:00:31,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:00:31,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:00:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:00:31,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:00:31,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:00:31,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224983070] [2022-12-06 17:00:31,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224983070] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:00:31,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:00:31,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:00:31,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108432393] [2022-12-06 17:00:31,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:00:31,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:00:31,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:00:31,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:00:31,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:00:31,627 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:00:31,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 907 places, 1772 transitions, 91154 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:31,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:00:31,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:00:31,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:00:34,832 INFO L130 PetriNetUnfolder]: 4545/9037 cut-off events. [2022-12-06 17:00:34,833 INFO L131 PetriNetUnfolder]: For 193123/196267 co-relation queries the response was YES. [2022-12-06 17:00:34,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218471 conditions, 9037 events. 4545/9037 cut-off events. For 193123/196267 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 73994 event pairs, 199 based on Foata normal form. 9/8420 useless extension candidates. Maximal degree in co-relation 194559. Up to 4171 conditions per place. [2022-12-06 17:00:35,217 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1207 selfloop transitions, 179 changer transitions 301/1771 dead transitions. [2022-12-06 17:00:35,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 931 places, 1771 transitions, 94462 flow [2022-12-06 17:00:35,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-06 17:00:35,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-06 17:00:35,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2412 transitions. [2022-12-06 17:00:35,220 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6067924528301887 [2022-12-06 17:00:35,220 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 790 predicate places. [2022-12-06 17:00:35,220 INFO L495 AbstractCegarLoop]: Abstraction has has 931 places, 1771 transitions, 94462 flow [2022-12-06 17:00:35,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:35,221 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:00:35,221 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] [2022-12-06 17:00:35,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-06 17:00:35,221 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:00:35,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:00:35,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1951844587, now seen corresponding path program 15 times [2022-12-06 17:00:35,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:00:35,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798493339] [2022-12-06 17:00:35,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:00:35,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:00:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:00:35,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:00:35,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:00:35,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798493339] [2022-12-06 17:00:35,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798493339] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:00:35,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521572349] [2022-12-06 17:00:35,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 17:00:35,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:00:35,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:00:35,713 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) [2022-12-06 17:00:35,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-06 17:00:35,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-06 17:00:35,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:00:35,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 52 conjunts are in the unsatisfiable core [2022-12-06 17:00:35,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:00:36,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-06 17:00:36,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 17:00:36,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 17:00:36,760 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:00:36,761 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 29 treesize of output 21 [2022-12-06 17:00:36,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:00:36,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:00:37,179 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:00:37,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 76 [2022-12-06 17:00:37,222 INFO L321 Elim1Store]: treesize reduction 32, result has 62.4 percent of original size [2022-12-06 17:00:37,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3372 treesize of output 2912 [2022-12-06 17:00:37,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-06 17:00:37,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-06 17:00:37,266 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:00:37,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 2860 treesize of output 2140 [2022-12-06 17:00:37,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-06 17:00:37,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-06 17:00:37,300 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:00:37,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 2092 treesize of output 1756 [2022-12-06 17:00:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:00:39,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521572349] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:00:39,633 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:00:39,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 15] total 49 [2022-12-06 17:00:39,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015697140] [2022-12-06 17:00:39,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:00:39,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-06 17:00:39,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:00:39,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-06 17:00:39,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=1863, Unknown=45, NotChecked=0, Total=2352 [2022-12-06 17:00:39,635 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 159 [2022-12-06 17:00:39,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 931 places, 1771 transitions, 94462 flow. Second operand has 49 states, 49 states have (on average 75.20408163265306) internal successors, (3685), 49 states have internal predecessors, (3685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:39,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:00:39,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 159 [2022-12-06 17:00:39,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:00:44,795 INFO L130 PetriNetUnfolder]: 4790/9531 cut-off events. [2022-12-06 17:00:44,796 INFO L131 PetriNetUnfolder]: For 226614/229904 co-relation queries the response was YES. [2022-12-06 17:00:44,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238013 conditions, 9531 events. 4790/9531 cut-off events. For 226614/229904 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 78987 event pairs, 123 based on Foata normal form. 46/8924 useless extension candidates. Maximal degree in co-relation 212575. Up to 4480 conditions per place. [2022-12-06 17:00:44,901 INFO L137 encePairwiseOnDemand]: 120/159 looper letters, 1176 selfloop transitions, 335 changer transitions 323/1899 dead transitions. [2022-12-06 17:00:44,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 972 places, 1899 transitions, 105141 flow [2022-12-06 17:00:44,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-06 17:00:44,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-12-06 17:00:44,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 3335 transitions. [2022-12-06 17:00:44,903 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4994010182689428 [2022-12-06 17:00:44,904 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 831 predicate places. [2022-12-06 17:00:44,904 INFO L495 AbstractCegarLoop]: Abstraction has has 972 places, 1899 transitions, 105141 flow [2022-12-06 17:00:44,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 75.20408163265306) internal successors, (3685), 49 states have internal predecessors, (3685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:44,905 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:00:44,905 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] [2022-12-06 17:00:44,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-06 17:00:45,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:00:45,110 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:00:45,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:00:45,110 INFO L85 PathProgramCache]: Analyzing trace with hash -797490933, now seen corresponding path program 16 times [2022-12-06 17:00:45,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:00:45,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790130450] [2022-12-06 17:00:45,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:00:45,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:00:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:00:45,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:00:45,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:00:45,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790130450] [2022-12-06 17:00:45,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790130450] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:00:45,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:00:45,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:00:45,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176444262] [2022-12-06 17:00:45,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:00:45,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:00:45,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:00:45,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:00:45,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:00:45,572 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:00:45,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 972 places, 1899 transitions, 105141 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:45,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:00:45,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:00:45,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:00:49,515 INFO L130 PetriNetUnfolder]: 4753/9477 cut-off events. [2022-12-06 17:00:49,515 INFO L131 PetriNetUnfolder]: For 233583/236563 co-relation queries the response was YES. [2022-12-06 17:00:49,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244645 conditions, 9477 events. 4753/9477 cut-off events. For 233583/236563 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 78521 event pairs, 131 based on Foata normal form. 12/8843 useless extension candidates. Maximal degree in co-relation 218629. Up to 4410 conditions per place. [2022-12-06 17:00:49,629 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 1302 selfloop transitions, 173 changer transitions 343/1902 dead transitions. [2022-12-06 17:00:49,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1000 places, 1902 transitions, 108883 flow [2022-12-06 17:00:49,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-06 17:00:49,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-06 17:00:49,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2775 transitions. [2022-12-06 17:00:49,631 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6018217306441119 [2022-12-06 17:00:49,631 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 859 predicate places. [2022-12-06 17:00:49,631 INFO L495 AbstractCegarLoop]: Abstraction has has 1000 places, 1902 transitions, 108883 flow [2022-12-06 17:00:49,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:49,631 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:00:49,632 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] [2022-12-06 17:00:49,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-06 17:00:49,632 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:00:49,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:00:49,633 INFO L85 PathProgramCache]: Analyzing trace with hash -550257941, now seen corresponding path program 12 times [2022-12-06 17:00:49,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:00:49,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503211527] [2022-12-06 17:00:49,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:00:49,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:00:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:00:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:00:50,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:00:50,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503211527] [2022-12-06 17:00:50,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503211527] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:00:50,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:00:50,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 17:00:50,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705113456] [2022-12-06 17:00:50,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:00:50,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 17:00:50,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:00:50,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 17:00:50,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-12-06 17:00:50,204 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:00:50,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1000 places, 1902 transitions, 108883 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:50,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:00:50,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:00:50,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:00:54,074 INFO L130 PetriNetUnfolder]: 4801/9551 cut-off events. [2022-12-06 17:00:54,074 INFO L131 PetriNetUnfolder]: For 246231/249483 co-relation queries the response was YES. [2022-12-06 17:00:54,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255227 conditions, 9551 events. 4801/9551 cut-off events. For 246231/249483 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 79228 event pairs, 131 based on Foata normal form. 9/8910 useless extension candidates. Maximal degree in co-relation 228400. Up to 4410 conditions per place. [2022-12-06 17:00:54,183 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 1271 selfloop transitions, 228 changer transitions 343/1926 dead transitions. [2022-12-06 17:00:54,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1026 places, 1926 transitions, 113939 flow [2022-12-06 17:00:54,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-06 17:00:54,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-06 17:00:54,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2602 transitions. [2022-12-06 17:00:54,185 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6061029583042161 [2022-12-06 17:00:54,185 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 885 predicate places. [2022-12-06 17:00:54,186 INFO L495 AbstractCegarLoop]: Abstraction has has 1026 places, 1926 transitions, 113939 flow [2022-12-06 17:00:54,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:54,186 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:00:54,186 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] [2022-12-06 17:00:54,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-06 17:00:54,186 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:00:54,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:00:54,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1580154499, now seen corresponding path program 13 times [2022-12-06 17:00:54,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:00:54,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406000867] [2022-12-06 17:00:54,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:00:54,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:00:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:00:54,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:00:54,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:00:54,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406000867] [2022-12-06 17:00:54,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406000867] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:00:54,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:00:54,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:00:54,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033765738] [2022-12-06 17:00:54,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:00:54,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:00:54,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:00:54,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:00:54,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:00:54,719 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:00:54,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1026 places, 1926 transitions, 113939 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:54,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:00:54,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:00:54,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:00:58,711 INFO L130 PetriNetUnfolder]: 4807/9567 cut-off events. [2022-12-06 17:00:58,712 INFO L131 PetriNetUnfolder]: For 263315/266611 co-relation queries the response was YES. [2022-12-06 17:00:58,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263871 conditions, 9567 events. 4807/9567 cut-off events. For 263315/266611 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 79424 event pairs, 127 based on Foata normal form. 11/8928 useless extension candidates. Maximal degree in co-relation 236101. Up to 4410 conditions per place. [2022-12-06 17:00:58,827 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 1345 selfloop transitions, 151 changer transitions 351/1931 dead transitions. [2022-12-06 17:00:58,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1050 places, 1931 transitions, 117892 flow [2022-12-06 17:00:58,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-06 17:00:58,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-06 17:00:58,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2408 transitions. [2022-12-06 17:00:58,829 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6057861635220125 [2022-12-06 17:00:58,829 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 909 predicate places. [2022-12-06 17:00:58,829 INFO L495 AbstractCegarLoop]: Abstraction has has 1050 places, 1931 transitions, 117892 flow [2022-12-06 17:00:58,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:58,829 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:00:58,829 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] [2022-12-06 17:00:58,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-06 17:00:58,830 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:00:58,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:00:58,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1256838905, now seen corresponding path program 14 times [2022-12-06 17:00:58,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:00:58,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898250944] [2022-12-06 17:00:58,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:00:58,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:00:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:00:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:00:59,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:00:59,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898250944] [2022-12-06 17:00:59,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898250944] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:00:59,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:00:59,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 17:00:59,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482271856] [2022-12-06 17:00:59,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:00:59,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 17:00:59,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:00:59,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 17:00:59,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-12-06 17:00:59,346 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:00:59,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1050 places, 1931 transitions, 117892 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:59,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:00:59,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:00:59,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:01:03,447 INFO L130 PetriNetUnfolder]: 4870/9696 cut-off events. [2022-12-06 17:01:03,447 INFO L131 PetriNetUnfolder]: For 280317/283877 co-relation queries the response was YES. [2022-12-06 17:01:03,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275566 conditions, 9696 events. 4870/9696 cut-off events. For 280317/283877 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 80807 event pairs, 198 based on Foata normal form. 5/9045 useless extension candidates. Maximal degree in co-relation 246989. Up to 4410 conditions per place. [2022-12-06 17:01:03,679 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 1292 selfloop transitions, 235 changer transitions 351/1962 dead transitions. [2022-12-06 17:01:03,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1079 places, 1962 transitions, 123576 flow [2022-12-06 17:01:03,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-06 17:01:03,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-06 17:01:03,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2882 transitions. [2022-12-06 17:01:03,681 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6041928721174005 [2022-12-06 17:01:03,682 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 938 predicate places. [2022-12-06 17:01:03,682 INFO L495 AbstractCegarLoop]: Abstraction has has 1079 places, 1962 transitions, 123576 flow [2022-12-06 17:01:03,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:03,682 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:01:03,682 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] [2022-12-06 17:01:03,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-06 17:01:03,682 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:01:03,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:01:03,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1447580555, now seen corresponding path program 15 times [2022-12-06 17:01:03,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:01:03,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68784600] [2022-12-06 17:01:03,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:01:03,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:01:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:01:04,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:01:04,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:01:04,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68784600] [2022-12-06 17:01:04,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68784600] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:01:04,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619796096] [2022-12-06 17:01:04,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 17:01:04,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:01:04,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:01:04,127 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:01:04,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-06 17:01:04,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-06 17:01:04,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:01:04,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-06 17:01:04,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:01:04,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-06 17:01:04,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:01:04,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:01:04,873 INFO L321 Elim1Store]: treesize reduction 32, result has 62.4 percent of original size [2022-12-06 17:01:04,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 60 [2022-12-06 17:01:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:01:04,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619796096] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:01:04,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:01:04,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 28 [2022-12-06 17:01:04,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400385300] [2022-12-06 17:01:04,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:01:04,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-06 17:01:04,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:01:04,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-06 17:01:04,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756 [2022-12-06 17:01:04,983 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:01:04,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1079 places, 1962 transitions, 123576 flow. Second operand has 28 states, 28 states have (on average 92.5) internal successors, (2590), 28 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:04,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:01:04,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:01:04,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:01:10,126 INFO L130 PetriNetUnfolder]: 5215/10369 cut-off events. [2022-12-06 17:01:10,126 INFO L131 PetriNetUnfolder]: For 316174/320634 co-relation queries the response was YES. [2022-12-06 17:01:10,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303823 conditions, 10369 events. 5215/10369 cut-off events. For 316174/320634 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 87460 event pairs, 117 based on Foata normal form. 23/9713 useless extension candidates. Maximal degree in co-relation 272379. Up to 4703 conditions per place. [2022-12-06 17:01:10,253 INFO L137 encePairwiseOnDemand]: 126/159 looper letters, 1405 selfloop transitions, 399 changer transitions 374/2262 dead transitions. [2022-12-06 17:01:10,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1124 places, 2262 transitions, 147484 flow [2022-12-06 17:01:10,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-06 17:01:10,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-12-06 17:01:10,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 4432 transitions. [2022-12-06 17:01:10,255 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6059611703582172 [2022-12-06 17:01:10,256 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 983 predicate places. [2022-12-06 17:01:10,256 INFO L495 AbstractCegarLoop]: Abstraction has has 1124 places, 2262 transitions, 147484 flow [2022-12-06 17:01:10,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 92.5) internal successors, (2590), 28 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:10,256 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:01:10,256 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] [2022-12-06 17:01:10,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-06 17:01:10,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-12-06 17:01:10,461 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:01:10,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:01:10,461 INFO L85 PathProgramCache]: Analyzing trace with hash -2139069577, now seen corresponding path program 17 times [2022-12-06 17:01:10,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:01:10,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845473504] [2022-12-06 17:01:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:01:10,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:01:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:01:10,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:01:10,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:01:10,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845473504] [2022-12-06 17:01:10,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845473504] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:01:10,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:01:10,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:01:10,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502911006] [2022-12-06 17:01:10,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:01:10,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:01:10,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:01:10,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:01:10,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:01:10,996 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:01:10,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1124 places, 2262 transitions, 147484 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:10,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:01:10,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:01:10,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:01:15,905 INFO L130 PetriNetUnfolder]: 5268/10437 cut-off events. [2022-12-06 17:01:15,905 INFO L131 PetriNetUnfolder]: For 331487/335925 co-relation queries the response was YES. [2022-12-06 17:01:15,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315565 conditions, 10437 events. 5268/10437 cut-off events. For 331487/335925 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 87854 event pairs, 121 based on Foata normal form. 9/9760 useless extension candidates. Maximal degree in co-relation 283245. Up to 4707 conditions per place. [2022-12-06 17:01:16,034 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1641 selfloop transitions, 199 changer transitions 379/2303 dead transitions. [2022-12-06 17:01:16,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1149 places, 2303 transitions, 154530 flow [2022-12-06 17:01:16,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-06 17:01:16,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-06 17:01:16,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2511 transitions. [2022-12-06 17:01:16,036 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6074020319303338 [2022-12-06 17:01:16,037 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1008 predicate places. [2022-12-06 17:01:16,037 INFO L495 AbstractCegarLoop]: Abstraction has has 1149 places, 2303 transitions, 154530 flow [2022-12-06 17:01:16,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:16,037 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:01:16,037 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] [2022-12-06 17:01:16,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-12-06 17:01:16,038 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:01:16,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:01:16,038 INFO L85 PathProgramCache]: Analyzing trace with hash 687892467, now seen corresponding path program 18 times [2022-12-06 17:01:16,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:01:16,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750700979] [2022-12-06 17:01:16,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:01:16,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:01:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:01:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:01:16,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:01:16,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750700979] [2022-12-06 17:01:16,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750700979] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:01:16,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:01:16,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:01:16,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245352603] [2022-12-06 17:01:16,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:01:16,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:01:16,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:01:16,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:01:16,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:01:16,573 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:01:16,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1149 places, 2303 transitions, 154530 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:16,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:01:16,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:01:16,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:01:22,082 INFO L130 PetriNetUnfolder]: 5275/10460 cut-off events. [2022-12-06 17:01:22,082 INFO L131 PetriNetUnfolder]: For 353153/358014 co-relation queries the response was YES. [2022-12-06 17:01:22,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325086 conditions, 10460 events. 5275/10460 cut-off events. For 353153/358014 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 88317 event pairs, 125 based on Foata normal form. 15/9789 useless extension candidates. Maximal degree in co-relation 291889. Up to 4707 conditions per place. [2022-12-06 17:01:22,229 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 1643 selfloop transitions, 190 changer transitions 392/2309 dead transitions. [2022-12-06 17:01:22,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1177 places, 2309 transitions, 159328 flow [2022-12-06 17:01:22,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-06 17:01:22,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-06 17:01:22,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2779 transitions. [2022-12-06 17:01:22,231 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6026892214270223 [2022-12-06 17:01:22,232 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1036 predicate places. [2022-12-06 17:01:22,233 INFO L495 AbstractCegarLoop]: Abstraction has has 1177 places, 2309 transitions, 159328 flow [2022-12-06 17:01:22,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:22,233 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:01:22,233 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] [2022-12-06 17:01:22,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-12-06 17:01:22,233 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:01:22,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:01:22,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1779665483, now seen corresponding path program 19 times [2022-12-06 17:01:22,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:01:22,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209357954] [2022-12-06 17:01:22,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:01:22,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:01:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:01:22,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:01:22,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:01:22,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209357954] [2022-12-06 17:01:22,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209357954] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:01:22,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:01:22,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:01:22,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734986572] [2022-12-06 17:01:22,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:01:22,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:01:22,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:01:22,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:01:22,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:01:22,776 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:01:22,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1177 places, 2309 transitions, 159328 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:22,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:01:22,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:01:22,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:01:28,388 INFO L130 PetriNetUnfolder]: 5263/10464 cut-off events. [2022-12-06 17:01:28,389 INFO L131 PetriNetUnfolder]: For 358797/363802 co-relation queries the response was YES. [2022-12-06 17:01:28,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333612 conditions, 10464 events. 5263/10464 cut-off events. For 358797/363802 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 88256 event pairs, 157 based on Foata normal form. 13/9794 useless extension candidates. Maximal degree in co-relation 299540. Up to 4705 conditions per place. [2022-12-06 17:01:28,528 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1637 selfloop transitions, 183 changer transitions 398/2302 dead transitions. [2022-12-06 17:01:28,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1203 places, 2302 transitions, 163224 flow [2022-12-06 17:01:28,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-06 17:01:28,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-06 17:01:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2598 transitions. [2022-12-06 17:01:28,529 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6051712089447938 [2022-12-06 17:01:28,530 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1062 predicate places. [2022-12-06 17:01:28,530 INFO L495 AbstractCegarLoop]: Abstraction has has 1203 places, 2302 transitions, 163224 flow [2022-12-06 17:01:28,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:28,530 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:01:28,530 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] [2022-12-06 17:01:28,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-12-06 17:01:28,530 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:01:28,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:01:28,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1923649073, now seen corresponding path program 20 times [2022-12-06 17:01:28,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:01:28,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117798651] [2022-12-06 17:01:28,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:01:28,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:01:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:01:28,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:01:28,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:01:28,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117798651] [2022-12-06 17:01:28,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117798651] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:01:28,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889994644] [2022-12-06 17:01:28,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 17:01:28,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:01:28,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:01:28,952 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:01:28,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-06 17:01:29,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 17:01:29,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:01:29,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-06 17:01:29,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:01:29,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-06 17:01:29,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 17:01:29,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 17:01:29,938 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:01:29,938 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 29 treesize of output 25 [2022-12-06 17:01:29,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:01:29,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:01:30,289 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:01:30,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 76 [2022-12-06 17:01:30,324 INFO L321 Elim1Store]: treesize reduction 32, result has 62.4 percent of original size [2022-12-06 17:01:30,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3372 treesize of output 2912 [2022-12-06 17:01:30,348 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-06 17:01:30,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-06 17:01:30,362 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:01:30,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 2860 treesize of output 2140 [2022-12-06 17:01:30,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-06 17:01:30,380 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-06 17:01:30,392 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:01:30,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 2092 treesize of output 1756 [2022-12-06 17:01:31,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:01:31,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889994644] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:01:31,944 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:01:31,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 15] total 50 [2022-12-06 17:01:31,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623678522] [2022-12-06 17:01:31,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:01:31,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-06 17:01:31,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:01:31,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-06 17:01:31,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=456, Invalid=1954, Unknown=40, NotChecked=0, Total=2450 [2022-12-06 17:01:31,947 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 159 [2022-12-06 17:01:31,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1203 places, 2302 transitions, 163224 flow. Second operand has 50 states, 50 states have (on average 75.24) internal successors, (3762), 50 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:31,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:01:31,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 159 [2022-12-06 17:01:31,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:01:38,882 INFO L130 PetriNetUnfolder]: 5358/10620 cut-off events. [2022-12-06 17:01:38,882 INFO L131 PetriNetUnfolder]: For 395198/400555 co-relation queries the response was YES. [2022-12-06 17:01:38,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348745 conditions, 10620 events. 5358/10620 cut-off events. For 395198/400555 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 89853 event pairs, 113 based on Foata normal form. 51/9980 useless extension candidates. Maximal degree in co-relation 313005. Up to 4843 conditions per place. [2022-12-06 17:01:39,149 INFO L137 encePairwiseOnDemand]: 120/159 looper letters, 1499 selfloop transitions, 392 changer transitions 398/2354 dead transitions. [2022-12-06 17:01:39,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1247 places, 2354 transitions, 171637 flow [2022-12-06 17:01:39,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-06 17:01:39,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-06 17:01:39,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3572 transitions. [2022-12-06 17:01:39,167 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4992313067784766 [2022-12-06 17:01:39,168 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1106 predicate places. [2022-12-06 17:01:39,168 INFO L495 AbstractCegarLoop]: Abstraction has has 1247 places, 2354 transitions, 171637 flow [2022-12-06 17:01:39,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 75.24) internal successors, (3762), 50 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:39,169 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:01:39,169 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] [2022-12-06 17:01:39,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-06 17:01:39,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:01:39,374 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:01:39,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:01:39,375 INFO L85 PathProgramCache]: Analyzing trace with hash 337586585, now seen corresponding path program 21 times [2022-12-06 17:01:39,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:01:39,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718097240] [2022-12-06 17:01:39,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:01:39,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:01:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:01:39,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:01:39,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:01:39,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718097240] [2022-12-06 17:01:39,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718097240] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:01:39,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:01:39,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:01:39,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650715226] [2022-12-06 17:01:39,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:01:39,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:01:39,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:01:39,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:01:39,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:01:39,805 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:01:39,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1247 places, 2354 transitions, 171637 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:39,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:01:39,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:01:39,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:01:45,287 INFO L130 PetriNetUnfolder]: 5348/10617 cut-off events. [2022-12-06 17:01:45,287 INFO L131 PetriNetUnfolder]: For 411870/417211 co-relation queries the response was YES. [2022-12-06 17:01:45,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357611 conditions, 10617 events. 5348/10617 cut-off events. For 411870/417211 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 90138 event pairs, 117 based on Foata normal form. 15/9951 useless extension candidates. Maximal degree in co-relation 320981. Up to 4843 conditions per place. [2022-12-06 17:01:45,569 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1673 selfloop transitions, 190 changer transitions 403/2350 dead transitions. [2022-12-06 17:01:45,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1272 places, 2350 transitions, 175833 flow [2022-12-06 17:01:45,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-06 17:01:45,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-06 17:01:45,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2502 transitions. [2022-12-06 17:01:45,571 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6052249637155298 [2022-12-06 17:01:45,573 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1131 predicate places. [2022-12-06 17:01:45,573 INFO L495 AbstractCegarLoop]: Abstraction has has 1272 places, 2350 transitions, 175833 flow [2022-12-06 17:01:45,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:45,573 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:01:45,573 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] [2022-12-06 17:01:45,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-12-06 17:01:45,573 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:01:45,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:01:45,574 INFO L85 PathProgramCache]: Analyzing trace with hash 536908313, now seen corresponding path program 22 times [2022-12-06 17:01:45,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:01:45,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964402344] [2022-12-06 17:01:45,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:01:45,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:01:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:01:46,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:01:46,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:01:46,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964402344] [2022-12-06 17:01:46,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964402344] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:01:46,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:01:46,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 17:01:46,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961028727] [2022-12-06 17:01:46,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:01:46,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 17:01:46,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:01:46,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 17:01:46,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-12-06 17:01:46,022 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:01:46,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1272 places, 2350 transitions, 175833 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:46,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:01:46,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:01:46,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:01:51,823 INFO L130 PetriNetUnfolder]: 5395/10698 cut-off events. [2022-12-06 17:01:51,824 INFO L131 PetriNetUnfolder]: For 433453/438844 co-relation queries the response was YES. [2022-12-06 17:01:51,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370000 conditions, 10698 events. 5395/10698 cut-off events. For 433453/438844 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 90878 event pairs, 125 based on Foata normal form. 18/10034 useless extension candidates. Maximal degree in co-relation 332153. Up to 4906 conditions per place. [2022-12-06 17:01:51,985 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 1663 selfloop transitions, 245 changer transitions 403/2395 dead transitions. [2022-12-06 17:01:51,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1302 places, 2395 transitions, 183941 flow [2022-12-06 17:01:51,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-06 17:01:51,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-06 17:01:51,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3007 transitions. [2022-12-06 17:01:51,987 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.610062893081761 [2022-12-06 17:01:51,988 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1161 predicate places. [2022-12-06 17:01:51,988 INFO L495 AbstractCegarLoop]: Abstraction has has 1302 places, 2395 transitions, 183941 flow [2022-12-06 17:01:51,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:51,988 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:01:51,988 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] [2022-12-06 17:01:51,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-12-06 17:01:51,988 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:01:51,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:01:51,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1894669969, now seen corresponding path program 23 times [2022-12-06 17:01:51,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:01:51,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086450338] [2022-12-06 17:01:51,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:01:51,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:01:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:01:52,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:01:52,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:01:52,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086450338] [2022-12-06 17:01:52,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086450338] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:01:52,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:01:52,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 17:01:52,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986830012] [2022-12-06 17:01:52,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:01:52,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 17:01:52,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:01:52,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 17:01:52,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-12-06 17:01:52,583 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:01:52,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1302 places, 2395 transitions, 183941 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:52,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:01:52,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:01:52,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:01:58,170 INFO L130 PetriNetUnfolder]: 5196/10279 cut-off events. [2022-12-06 17:01:58,171 INFO L131 PetriNetUnfolder]: For 433866/439275 co-relation queries the response was YES. [2022-12-06 17:01:58,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365393 conditions, 10279 events. 5196/10279 cut-off events. For 433866/439275 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 86386 event pairs, 113 based on Foata normal form. 14/9662 useless extension candidates. Maximal degree in co-relation 328169. Up to 4652 conditions per place. [2022-12-06 17:01:58,311 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1664 selfloop transitions, 210 changer transitions 403/2361 dead transitions. [2022-12-06 17:01:58,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1327 places, 2361 transitions, 185781 flow [2022-12-06 17:01:58,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-06 17:01:58,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-06 17:01:58,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2607 transitions. [2022-12-06 17:01:58,312 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6072676450034941 [2022-12-06 17:01:58,313 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1186 predicate places. [2022-12-06 17:01:58,313 INFO L495 AbstractCegarLoop]: Abstraction has has 1327 places, 2361 transitions, 185781 flow [2022-12-06 17:01:58,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:58,313 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:01:58,313 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] [2022-12-06 17:01:58,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-12-06 17:01:58,313 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:01:58,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:01:58,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1152361295, now seen corresponding path program 16 times [2022-12-06 17:01:58,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:01:58,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211088086] [2022-12-06 17:01:58,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:01:58,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:01:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:01:58,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:01:58,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:01:58,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211088086] [2022-12-06 17:01:58,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211088086] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:01:58,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:01:58,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:01:58,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542367459] [2022-12-06 17:01:58,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:01:58,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:01:58,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:01:58,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:01:58,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:01:58,853 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:01:58,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1327 places, 2361 transitions, 185781 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:58,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:01:58,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:01:58,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:02:04,926 INFO L130 PetriNetUnfolder]: 5202/10281 cut-off events. [2022-12-06 17:02:04,926 INFO L131 PetriNetUnfolder]: For 449490/455128 co-relation queries the response was YES. [2022-12-06 17:02:04,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374826 conditions, 10281 events. 5202/10281 cut-off events. For 449490/455128 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 86486 event pairs, 121 based on Foata normal form. 13/9664 useless extension candidates. Maximal degree in co-relation 336569. Up to 4652 conditions per place. [2022-12-06 17:02:05,077 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 1718 selfloop transitions, 153 changer transitions 411/2366 dead transitions. [2022-12-06 17:02:05,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1352 places, 2366 transitions, 190704 flow [2022-12-06 17:02:05,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-06 17:02:05,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-06 17:02:05,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2504 transitions. [2022-12-06 17:02:05,079 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6057087566521528 [2022-12-06 17:02:05,079 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1211 predicate places. [2022-12-06 17:02:05,079 INFO L495 AbstractCegarLoop]: Abstraction has has 1352 places, 2366 transitions, 190704 flow [2022-12-06 17:02:05,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:05,079 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:02:05,079 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] [2022-12-06 17:02:05,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-12-06 17:02:05,080 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:02:05,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:02:05,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2135965757, now seen corresponding path program 17 times [2022-12-06 17:02:05,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:02:05,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772817860] [2022-12-06 17:02:05,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:02:05,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:02:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:05,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:02:05,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:02:05,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772817860] [2022-12-06 17:02:05,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772817860] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:02:05,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:02:05,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:02:05,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479375786] [2022-12-06 17:02:05,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:02:05,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:02:05,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:02:05,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:02:05,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:02:05,514 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:02:05,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1352 places, 2366 transitions, 190704 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:05,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:02:05,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:02:05,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:02:11,427 INFO L130 PetriNetUnfolder]: 5208/10325 cut-off events. [2022-12-06 17:02:11,428 INFO L131 PetriNetUnfolder]: For 487803/493578 co-relation queries the response was YES. [2022-12-06 17:02:11,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384325 conditions, 10325 events. 5208/10325 cut-off events. For 487803/493578 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 86949 event pairs, 113 based on Foata normal form. 21/9715 useless extension candidates. Maximal degree in co-relation 345013. Up to 4652 conditions per place. [2022-12-06 17:02:11,650 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 1713 selfloop transitions, 155 changer transitions 419/2371 dead transitions. [2022-12-06 17:02:11,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1377 places, 2371 transitions, 195647 flow [2022-12-06 17:02:11,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-06 17:02:11,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-06 17:02:11,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2498 transitions. [2022-12-06 17:02:11,651 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6042573778422835 [2022-12-06 17:02:11,652 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1236 predicate places. [2022-12-06 17:02:11,652 INFO L495 AbstractCegarLoop]: Abstraction has has 1377 places, 2371 transitions, 195647 flow [2022-12-06 17:02:11,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:11,652 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:02:11,652 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] [2022-12-06 17:02:11,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-12-06 17:02:11,652 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:02:11,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:02:11,652 INFO L85 PathProgramCache]: Analyzing trace with hash 297379671, now seen corresponding path program 18 times [2022-12-06 17:02:11,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:02:11,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483931186] [2022-12-06 17:02:11,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:02:11,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:02:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:12,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:02:12,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:02:12,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483931186] [2022-12-06 17:02:12,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483931186] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:02:12,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:02:12,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 17:02:12,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959386005] [2022-12-06 17:02:12,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:02:12,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 17:02:12,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:02:12,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 17:02:12,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-12-06 17:02:12,079 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:02:12,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1377 places, 2371 transitions, 195647 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:12,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:02:12,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:02:12,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:02:18,184 INFO L130 PetriNetUnfolder]: 5484/10823 cut-off events. [2022-12-06 17:02:18,184 INFO L131 PetriNetUnfolder]: For 518102/524413 co-relation queries the response was YES. [2022-12-06 17:02:18,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412530 conditions, 10823 events. 5484/10823 cut-off events. For 518102/524413 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 91831 event pairs, 125 based on Foata normal form. 12/10153 useless extension candidates. Maximal degree in co-relation 372348. Up to 4652 conditions per place. [2022-12-06 17:02:18,339 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 1689 selfloop transitions, 282 changer transitions 419/2474 dead transitions. [2022-12-06 17:02:18,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1408 places, 2474 transitions, 209157 flow [2022-12-06 17:02:18,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-06 17:02:18,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-06 17:02:18,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3091 transitions. [2022-12-06 17:02:18,341 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6075078616352201 [2022-12-06 17:02:18,342 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1267 predicate places. [2022-12-06 17:02:18,342 INFO L495 AbstractCegarLoop]: Abstraction has has 1408 places, 2474 transitions, 209157 flow [2022-12-06 17:02:18,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:18,342 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:02:18,342 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] [2022-12-06 17:02:18,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-12-06 17:02:18,342 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:02:18,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:02:18,342 INFO L85 PathProgramCache]: Analyzing trace with hash -130784305, now seen corresponding path program 19 times [2022-12-06 17:02:18,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:02:18,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127932175] [2022-12-06 17:02:18,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:02:18,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:02:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:18,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:02:18,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:02:18,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127932175] [2022-12-06 17:02:18,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127932175] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:02:18,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:02:18,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 17:02:18,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046348255] [2022-12-06 17:02:18,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:02:18,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 17:02:18,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:02:18,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 17:02:18,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-12-06 17:02:18,894 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:02:18,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1408 places, 2474 transitions, 209157 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:18,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:02:18,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:02:18,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:02:25,290 INFO L130 PetriNetUnfolder]: 5529/10902 cut-off events. [2022-12-06 17:02:25,291 INFO L131 PetriNetUnfolder]: For 542787/549108 co-relation queries the response was YES. [2022-12-06 17:02:25,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425258 conditions, 10902 events. 5529/10902 cut-off events. For 542787/549108 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 92642 event pairs, 121 based on Foata normal form. 10/10226 useless extension candidates. Maximal degree in co-relation 384199. Up to 4652 conditions per place. [2022-12-06 17:02:25,578 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 1724 selfloop transitions, 270 changer transitions 419/2497 dead transitions. [2022-12-06 17:02:25,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1435 places, 2497 transitions, 215943 flow [2022-12-06 17:02:25,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-06 17:02:25,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-06 17:02:25,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2698 transitions. [2022-12-06 17:02:25,580 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6060197663971248 [2022-12-06 17:02:25,580 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1294 predicate places. [2022-12-06 17:02:25,581 INFO L495 AbstractCegarLoop]: Abstraction has has 1435 places, 2497 transitions, 215943 flow [2022-12-06 17:02:25,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:25,581 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:02:25,581 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] [2022-12-06 17:02:25,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-12-06 17:02:25,581 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:02:25,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:02:25,581 INFO L85 PathProgramCache]: Analyzing trace with hash -2135389777, now seen corresponding path program 20 times [2022-12-06 17:02:25,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:02:25,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305019261] [2022-12-06 17:02:25,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:02:25,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:02:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:25,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:02:25,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:02:25,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305019261] [2022-12-06 17:02:25,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305019261] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:02:25,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:02:25,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 17:02:25,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502643186] [2022-12-06 17:02:25,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:02:25,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 17:02:25,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:02:25,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 17:02:25,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-12-06 17:02:25,982 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:02:25,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1435 places, 2497 transitions, 215943 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:25,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:02:25,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:02:25,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:02:32,838 INFO L130 PetriNetUnfolder]: 5388/10661 cut-off events. [2022-12-06 17:02:32,838 INFO L131 PetriNetUnfolder]: For 554493/561153 co-relation queries the response was YES. [2022-12-06 17:02:32,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425066 conditions, 10661 events. 5388/10661 cut-off events. For 554493/561153 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 90456 event pairs, 125 based on Foata normal form. 9/10026 useless extension candidates. Maximal degree in co-relation 383134. Up to 4652 conditions per place. [2022-12-06 17:02:33,049 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 1690 selfloop transitions, 271 changer transitions 419/2464 dead transitions. [2022-12-06 17:02:33,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1461 places, 2464 transitions, 217733 flow [2022-12-06 17:02:33,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-06 17:02:33,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-06 17:02:33,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2601 transitions. [2022-12-06 17:02:33,051 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6058700209643606 [2022-12-06 17:02:33,051 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1320 predicate places. [2022-12-06 17:02:33,051 INFO L495 AbstractCegarLoop]: Abstraction has has 1461 places, 2464 transitions, 217733 flow [2022-12-06 17:02:33,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:33,052 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:02:33,052 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] [2022-12-06 17:02:33,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-12-06 17:02:33,052 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:02:33,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:02:33,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1363979173, now seen corresponding path program 21 times [2022-12-06 17:02:33,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:02:33,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765709242] [2022-12-06 17:02:33,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:02:33,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:02:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:33,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:02:33,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:02:33,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765709242] [2022-12-06 17:02:33,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765709242] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:02:33,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:02:33,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:02:33,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158275511] [2022-12-06 17:02:33,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:02:33,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:02:33,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:02:33,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:02:33,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:02:33,465 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-06 17:02:33,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1461 places, 2464 transitions, 217733 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:33,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:02:33,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-06 17:02:33,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:02:39,903 INFO L130 PetriNetUnfolder]: 5358/10602 cut-off events. [2022-12-06 17:02:39,907 INFO L131 PetriNetUnfolder]: For 578246/585347 co-relation queries the response was YES. [2022-12-06 17:02:39,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431834 conditions, 10602 events. 5358/10602 cut-off events. For 578246/585347 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 89764 event pairs, 125 based on Foata normal form. 21/9985 useless extension candidates. Maximal degree in co-relation 389886. Up to 4652 conditions per place. [2022-12-06 17:02:40,067 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 1784 selfloop transitions, 149 changer transitions 434/2451 dead transitions. [2022-12-06 17:02:40,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1488 places, 2451 transitions, 221225 flow [2022-12-06 17:02:40,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-06 17:02:40,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-06 17:02:40,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2680 transitions. [2022-12-06 17:02:40,069 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6019766397124887 [2022-12-06 17:02:40,069 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1347 predicate places. [2022-12-06 17:02:40,069 INFO L495 AbstractCegarLoop]: Abstraction has has 1488 places, 2451 transitions, 221225 flow [2022-12-06 17:02:40,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:40,070 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:02:40,070 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] [2022-12-06 17:02:40,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-12-06 17:02:40,070 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:02:40,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:02:40,070 INFO L85 PathProgramCache]: Analyzing trace with hash 603034495, now seen corresponding path program 22 times [2022-12-06 17:02:40,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:02:40,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604277288] [2022-12-06 17:02:40,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:02:40,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:02:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:41,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:02:41,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:02:41,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604277288] [2022-12-06 17:02:41,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604277288] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:02:41,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:02:41,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-06 17:02:41,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670499599] [2022-12-06 17:02:41,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:02:41,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-06 17:02:41,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:02:41,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-06 17:02:41,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2022-12-06 17:02:41,024 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 159 [2022-12-06 17:02:41,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1488 places, 2451 transitions, 221225 flow. Second operand has 22 states, 22 states have (on average 82.5909090909091) internal successors, (1817), 22 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:41,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:02:41,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 159 [2022-12-06 17:02:41,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:02:48,023 INFO L130 PetriNetUnfolder]: 5377/10668 cut-off events. [2022-12-06 17:02:48,023 INFO L131 PetriNetUnfolder]: For 611411/618710 co-relation queries the response was YES. [2022-12-06 17:02:48,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443036 conditions, 10668 events. 5377/10668 cut-off events. For 611411/618710 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 90805 event pairs, 118 based on Foata normal form. 35/10069 useless extension candidates. Maximal degree in co-relation 399445. Up to 4656 conditions per place. [2022-12-06 17:02:48,321 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 1788 selfloop transitions, 170 changer transitions 491/2527 dead transitions. [2022-12-06 17:02:48,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1519 places, 2527 transitions, 233180 flow [2022-12-06 17:02:48,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-06 17:02:48,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-06 17:02:48,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2783 transitions. [2022-12-06 17:02:48,323 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5469732704402516 [2022-12-06 17:02:48,323 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1378 predicate places. [2022-12-06 17:02:48,323 INFO L495 AbstractCegarLoop]: Abstraction has has 1519 places, 2527 transitions, 233180 flow [2022-12-06 17:02:48,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 82.5909090909091) internal successors, (1817), 22 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:48,324 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:02:48,324 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] [2022-12-06 17:02:48,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-12-06 17:02:48,324 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:02:48,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:02:48,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1631337599, now seen corresponding path program 24 times [2022-12-06 17:02:48,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:02:48,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630888177] [2022-12-06 17:02:48,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:02:48,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:02:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:49,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:02:49,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:02:49,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630888177] [2022-12-06 17:02:49,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630888177] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:02:49,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:02:49,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-06 17:02:49,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775979256] [2022-12-06 17:02:49,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:02:49,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-06 17:02:49,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:02:49,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-06 17:02:49,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2022-12-06 17:02:49,057 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 159 [2022-12-06 17:02:49,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1519 places, 2527 transitions, 233180 flow. Second operand has 22 states, 22 states have (on average 82.5909090909091) internal successors, (1817), 22 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:49,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:02:49,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 159 [2022-12-06 17:02:49,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:02:57,574 INFO L130 PetriNetUnfolder]: 6126/12103 cut-off events. [2022-12-06 17:02:57,574 INFO L131 PetriNetUnfolder]: For 723024/731796 co-relation queries the response was YES. [2022-12-06 17:02:57,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514987 conditions, 12103 events. 6126/12103 cut-off events. For 723024/731796 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 105274 event pairs, 241 based on Foata normal form. 68/11428 useless extension candidates. Maximal degree in co-relation 463671. Up to 5883 conditions per place. [2022-12-06 17:02:57,761 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1804 selfloop transitions, 399 changer transitions 496/2777 dead transitions. [2022-12-06 17:02:57,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1554 places, 2777 transitions, 262670 flow [2022-12-06 17:02:57,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-06 17:02:57,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-06 17:02:57,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3177 transitions. [2022-12-06 17:02:57,763 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5550314465408805 [2022-12-06 17:02:57,764 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1413 predicate places. [2022-12-06 17:02:57,764 INFO L495 AbstractCegarLoop]: Abstraction has has 1554 places, 2777 transitions, 262670 flow [2022-12-06 17:02:57,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 82.5909090909091) internal successors, (1817), 22 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:57,764 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:02:57,764 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] [2022-12-06 17:02:57,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-12-06 17:02:57,764 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:02:57,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:02:57,765 INFO L85 PathProgramCache]: Analyzing trace with hash -2137953041, now seen corresponding path program 25 times [2022-12-06 17:02:57,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:02:57,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100649988] [2022-12-06 17:02:57,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:02:57,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:02:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:58,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:02:58,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:02:58,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100649988] [2022-12-06 17:02:58,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100649988] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:02:58,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937391458] [2022-12-06 17:02:58,629 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-06 17:02:58,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:02:58,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:02:58,631 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:02:58,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-06 17:02:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:58,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-06 17:02:58,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:02:59,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 17:02:59,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 17:02:59,601 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-06 17:02:59,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2022-12-06 17:02:59,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-06 17:02:59,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:02:59,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:02:59,880 INFO L321 Elim1Store]: treesize reduction 15, result has 82.4 percent of original size [2022-12-06 17:02:59,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 139 [2022-12-06 17:02:59,889 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:02:59,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 66 treesize of output 50 [2022-12-06 17:03:00,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:03:00,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937391458] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:03:00,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:03:00,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 55 [2022-12-06 17:03:00,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366189430] [2022-12-06 17:03:00,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:03:00,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-12-06 17:03:00,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:03:00,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-12-06 17:03:00,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=2678, Unknown=2, NotChecked=0, Total=2970 [2022-12-06 17:03:00,467 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 159 [2022-12-06 17:03:00,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1554 places, 2777 transitions, 262670 flow. Second operand has 55 states, 55 states have (on average 82.49090909090908) internal successors, (4537), 55 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:03:00,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:03:00,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 159 [2022-12-06 17:03:00,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:03:10,517 INFO L130 PetriNetUnfolder]: 5990/11787 cut-off events. [2022-12-06 17:03:10,517 INFO L131 PetriNetUnfolder]: For 726140/734362 co-relation queries the response was YES. [2022-12-06 17:03:10,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513724 conditions, 11787 events. 5990/11787 cut-off events. For 726140/734362 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 101694 event pairs, 173 based on Foata normal form. 69/11161 useless extension candidates. Maximal degree in co-relation 463447. Up to 5600 conditions per place. [2022-12-06 17:03:10,701 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1814 selfloop transitions, 493 changer transitions 496/2881 dead transitions. [2022-12-06 17:03:10,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1595 places, 2881 transitions, 278163 flow [2022-12-06 17:03:10,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-06 17:03:10,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-12-06 17:03:10,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 3715 transitions. [2022-12-06 17:03:10,703 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.556304282719377 [2022-12-06 17:03:10,703 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1454 predicate places. [2022-12-06 17:03:10,703 INFO L495 AbstractCegarLoop]: Abstraction has has 1595 places, 2881 transitions, 278163 flow [2022-12-06 17:03:10,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 82.49090909090908) internal successors, (4537), 55 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:03:10,704 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:03:10,704 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] [2022-12-06 17:03:10,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-06 17:03:10,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:03:10,908 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:03:10,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:03:10,909 INFO L85 PathProgramCache]: Analyzing trace with hash -266197373, now seen corresponding path program 26 times [2022-12-06 17:03:10,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:03:10,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021779810] [2022-12-06 17:03:10,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:03:10,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:03:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:03:11,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:03:11,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:03:11,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021779810] [2022-12-06 17:03:11,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021779810] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:03:11,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:03:11,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-06 17:03:11,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304267627] [2022-12-06 17:03:11,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:03:11,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-06 17:03:11,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:03:11,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-06 17:03:11,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-12-06 17:03:11,716 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 159 [2022-12-06 17:03:11,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1595 places, 2881 transitions, 278163 flow. Second operand has 21 states, 21 states have (on average 82.71428571428571) internal successors, (1737), 21 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:03:11,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:03:11,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 159 [2022-12-06 17:03:11,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:03:21,813 INFO L130 PetriNetUnfolder]: 6050/11869 cut-off events. [2022-12-06 17:03:21,813 INFO L131 PetriNetUnfolder]: For 737466/745920 co-relation queries the response was YES. [2022-12-06 17:03:21,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528757 conditions, 11869 events. 6050/11869 cut-off events. For 737466/745920 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 102249 event pairs, 171 based on Foata normal form. 21/11183 useless extension candidates. Maximal degree in co-relation 477515. Up to 5600 conditions per place. [2022-12-06 17:03:22,087 INFO L137 encePairwiseOnDemand]: 126/159 looper letters, 2144 selfloop transitions, 201 changer transitions 511/2934 dead transitions. [2022-12-06 17:03:22,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1620 places, 2934 transitions, 288939 flow [2022-12-06 17:03:22,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-06 17:03:22,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-06 17:03:22,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2274 transitions. [2022-12-06 17:03:22,089 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5500725689404935 [2022-12-06 17:03:22,089 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1479 predicate places. [2022-12-06 17:03:22,089 INFO L495 AbstractCegarLoop]: Abstraction has has 1620 places, 2934 transitions, 288939 flow [2022-12-06 17:03:22,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 82.71428571428571) internal successors, (1737), 21 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:03:22,090 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:03:22,090 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] [2022-12-06 17:03:22,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-12-06 17:03:22,090 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:03:22,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:03:22,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1519497539, now seen corresponding path program 27 times [2022-12-06 17:03:22,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:03:22,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129970366] [2022-12-06 17:03:22,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:03:22,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:03:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:03:22,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:03:22,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:03:22,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129970366] [2022-12-06 17:03:22,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129970366] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:03:22,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:03:22,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-06 17:03:22,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522227731] [2022-12-06 17:03:22,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:03:22,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-06 17:03:22,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:03:22,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-06 17:03:22,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2022-12-06 17:03:22,744 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 159 [2022-12-06 17:03:22,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1620 places, 2934 transitions, 288939 flow. Second operand has 22 states, 22 states have (on average 82.5909090909091) internal successors, (1817), 22 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:03:22,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:03:22,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 159 [2022-12-06 17:03:22,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:03:34,073 INFO L130 PetriNetUnfolder]: 6439/12521 cut-off events. [2022-12-06 17:03:34,073 INFO L131 PetriNetUnfolder]: For 786134/795368 co-relation queries the response was YES. [2022-12-06 17:03:34,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571825 conditions, 12521 events. 6439/12521 cut-off events. For 786134/795368 co-relation queries the response was YES. Maximal size of possible extension queue 775. Compared 108448 event pairs, 238 based on Foata normal form. 23/11773 useless extension candidates. Maximal degree in co-relation 516267. Up to 6148 conditions per place. [2022-12-06 17:03:34,282 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 2173 selfloop transitions, 331 changer transitions 511/3093 dead transitions. [2022-12-06 17:03:34,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1652 places, 3093 transitions, 311134 flow [2022-12-06 17:03:34,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-06 17:03:34,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-06 17:03:34,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2903 transitions. [2022-12-06 17:03:34,284 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5532685344006099 [2022-12-06 17:03:34,284 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1511 predicate places. [2022-12-06 17:03:34,285 INFO L495 AbstractCegarLoop]: Abstraction has has 1652 places, 3093 transitions, 311134 flow [2022-12-06 17:03:34,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 82.5909090909091) internal successors, (1817), 22 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:03:34,285 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:03:34,285 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] [2022-12-06 17:03:34,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-12-06 17:03:34,285 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:03:34,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:03:34,285 INFO L85 PathProgramCache]: Analyzing trace with hash 193220283, now seen corresponding path program 28 times [2022-12-06 17:03:34,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:03:34,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859788729] [2022-12-06 17:03:34,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:03:34,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:03:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:03:35,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:03:35,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:03:35,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859788729] [2022-12-06 17:03:35,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859788729] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:03:35,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:03:35,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-06 17:03:35,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762415727] [2022-12-06 17:03:35,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:03:35,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-06 17:03:35,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:03:35,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-06 17:03:35,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2022-12-06 17:03:35,042 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 159 [2022-12-06 17:03:35,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1652 places, 3093 transitions, 311134 flow. Second operand has 22 states, 22 states have (on average 82.5909090909091) internal successors, (1817), 22 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:03:35,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:03:35,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 159 [2022-12-06 17:03:35,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:03:46,038 INFO L130 PetriNetUnfolder]: 6318/12367 cut-off events. [2022-12-06 17:03:46,038 INFO L131 PetriNetUnfolder]: For 846938/856236 co-relation queries the response was YES. [2022-12-06 17:03:46,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573541 conditions, 12367 events. 6318/12367 cut-off events. For 846938/856236 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 107395 event pairs, 175 based on Foata normal form. 19/11659 useless extension candidates. Maximal degree in co-relation 517771. Up to 6021 conditions per place. [2022-12-06 17:03:46,247 INFO L137 encePairwiseOnDemand]: 126/159 looper letters, 2187 selfloop transitions, 299 changer transitions 511/3075 dead transitions. [2022-12-06 17:03:46,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1679 places, 3075 transitions, 315309 flow [2022-12-06 17:03:46,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-06 17:03:46,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-06 17:03:46,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2450 transitions. [2022-12-06 17:03:46,255 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.550314465408805 [2022-12-06 17:03:46,255 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1538 predicate places. [2022-12-06 17:03:46,255 INFO L495 AbstractCegarLoop]: Abstraction has has 1679 places, 3075 transitions, 315309 flow [2022-12-06 17:03:46,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 82.5909090909091) internal successors, (1817), 22 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:03:46,255 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:03:46,256 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] [2022-12-06 17:03:46,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-12-06 17:03:46,256 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:03:46,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:03:46,256 INFO L85 PathProgramCache]: Analyzing trace with hash 850545383, now seen corresponding path program 23 times [2022-12-06 17:03:46,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:03:46,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105310085] [2022-12-06 17:03:46,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:03:46,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:03:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:03:46,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:03:46,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:03:46,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105310085] [2022-12-06 17:03:46,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105310085] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:03:46,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:03:46,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-06 17:03:46,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489694095] [2022-12-06 17:03:46,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:03:46,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-06 17:03:46,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:03:46,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-06 17:03:46,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-12-06 17:03:46,929 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 159 [2022-12-06 17:03:46,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1679 places, 3075 transitions, 315309 flow. Second operand has 21 states, 21 states have (on average 86.57142857142857) internal successors, (1818), 21 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:03:46,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:03:46,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 159 [2022-12-06 17:03:46,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:03:57,812 INFO L130 PetriNetUnfolder]: 6360/12443 cut-off events. [2022-12-06 17:03:57,812 INFO L131 PetriNetUnfolder]: For 858812/868726 co-relation queries the response was YES. [2022-12-06 17:03:57,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588535 conditions, 12443 events. 6360/12443 cut-off events. For 858812/868726 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 108425 event pairs, 236 based on Foata normal form. 32/11740 useless extension candidates. Maximal degree in co-relation 530349. Up to 6021 conditions per place. [2022-12-06 17:03:58,062 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 2292 selfloop transitions, 195 changer transitions 538/3106 dead transitions. [2022-12-06 17:03:58,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1708 places, 3106 transitions, 324583 flow [2022-12-06 17:03:58,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-06 17:03:58,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-06 17:03:58,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2722 transitions. [2022-12-06 17:03:58,064 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5706498951781971 [2022-12-06 17:03:58,064 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1567 predicate places. [2022-12-06 17:03:58,064 INFO L495 AbstractCegarLoop]: Abstraction has has 1708 places, 3106 transitions, 324583 flow [2022-12-06 17:03:58,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 86.57142857142857) internal successors, (1818), 21 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:03:58,064 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:03:58,065 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] [2022-12-06 17:03:58,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-12-06 17:03:58,065 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:03:58,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:03:58,065 INFO L85 PathProgramCache]: Analyzing trace with hash 316774041, now seen corresponding path program 24 times [2022-12-06 17:03:58,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:03:58,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115418048] [2022-12-06 17:03:58,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:03:58,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:03:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:03:59,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:03:59,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:03:59,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115418048] [2022-12-06 17:03:59,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115418048] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:03:59,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:03:59,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-06 17:03:59,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6288257] [2022-12-06 17:03:59,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:03:59,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-06 17:03:59,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:03:59,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-06 17:03:59,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2022-12-06 17:03:59,192 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 159 [2022-12-06 17:03:59,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1708 places, 3106 transitions, 324583 flow. Second operand has 22 states, 22 states have (on average 82.5909090909091) internal successors, (1817), 22 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:03:59,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:03:59,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 159 [2022-12-06 17:03:59,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:04:10,656 INFO L130 PetriNetUnfolder]: 6405/12563 cut-off events. [2022-12-06 17:04:10,656 INFO L131 PetriNetUnfolder]: For 928562/938484 co-relation queries the response was YES. [2022-12-06 17:04:10,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603580 conditions, 12563 events. 6405/12563 cut-off events. For 928562/938484 co-relation queries the response was YES. Maximal size of possible extension queue 775. Compared 109717 event pairs, 175 based on Foata normal form. 19/11845 useless extension candidates. Maximal degree in co-relation 544332. Up to 6021 conditions per place. [2022-12-06 17:04:10,873 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 2233 selfloop transitions, 280 changer transitions 538/3129 dead transitions. [2022-12-06 17:04:10,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1734 places, 3129 transitions, 333105 flow [2022-12-06 17:04:10,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-06 17:04:10,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-06 17:04:10,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2364 transitions. [2022-12-06 17:04:10,875 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5506638714185884 [2022-12-06 17:04:10,875 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1593 predicate places. [2022-12-06 17:04:10,875 INFO L495 AbstractCegarLoop]: Abstraction has has 1734 places, 3129 transitions, 333105 flow [2022-12-06 17:04:10,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 82.5909090909091) internal successors, (1817), 22 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:04:10,875 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:04:10,875 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] [2022-12-06 17:04:10,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-12-06 17:04:10,875 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:04:10,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:04:10,876 INFO L85 PathProgramCache]: Analyzing trace with hash 316198061, now seen corresponding path program 25 times [2022-12-06 17:04:10,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:04:10,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922584200] [2022-12-06 17:04:10,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:04:10,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:04:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:04:11,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:04:11,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:04:11,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922584200] [2022-12-06 17:04:11,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922584200] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:04:11,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:04:11,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-06 17:04:11,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806149641] [2022-12-06 17:04:11,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:04:11,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-06 17:04:11,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:04:11,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-06 17:04:11,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-12-06 17:04:11,610 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 159 [2022-12-06 17:04:11,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1734 places, 3129 transitions, 333105 flow. Second operand has 21 states, 21 states have (on average 82.71428571428571) internal successors, (1737), 21 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:04:11,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:04:11,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 159 [2022-12-06 17:04:11,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:04:23,143 INFO L130 PetriNetUnfolder]: 6393/12501 cut-off events. [2022-12-06 17:04:23,144 INFO L131 PetriNetUnfolder]: For 939627/950104 co-relation queries the response was YES. [2022-12-06 17:04:23,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613580 conditions, 12501 events. 6393/12501 cut-off events. For 939627/950104 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 108879 event pairs, 236 based on Foata normal form. 33/11801 useless extension candidates. Maximal degree in co-relation 553617. Up to 6021 conditions per place. [2022-12-06 17:04:23,381 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 2301 selfloop transitions, 199 changer transitions 545/3123 dead transitions. [2022-12-06 17:04:23,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1760 places, 3123 transitions, 338494 flow [2022-12-06 17:04:23,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-06 17:04:23,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-06 17:04:23,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2350 transitions. [2022-12-06 17:04:23,383 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5474027486606103 [2022-12-06 17:04:23,384 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1619 predicate places. [2022-12-06 17:04:23,384 INFO L495 AbstractCegarLoop]: Abstraction has has 1760 places, 3123 transitions, 338494 flow [2022-12-06 17:04:23,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 82.71428571428571) internal successors, (1737), 21 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:04:23,384 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:04:23,385 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] [2022-12-06 17:04:23,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-12-06 17:04:23,385 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:04:23,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:04:23,385 INFO L85 PathProgramCache]: Analyzing trace with hash 25361291, now seen corresponding path program 29 times [2022-12-06 17:04:23,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:04:23,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819649184] [2022-12-06 17:04:23,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:04:23,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:04:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:04:24,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:04:24,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:04:24,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819649184] [2022-12-06 17:04:24,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819649184] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:04:24,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:04:24,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-06 17:04:24,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887779035] [2022-12-06 17:04:24,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:04:24,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-06 17:04:24,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:04:24,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-06 17:04:24,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-12-06 17:04:24,059 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-06 17:04:24,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1760 places, 3123 transitions, 338494 flow. Second operand has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:04:24,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:04:24,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-06 17:04:24,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:04:35,625 INFO L130 PetriNetUnfolder]: 6400/12525 cut-off events. [2022-12-06 17:04:35,625 INFO L131 PetriNetUnfolder]: For 956432/967076 co-relation queries the response was YES. [2022-12-06 17:04:35,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 625311 conditions, 12525 events. 6400/12525 cut-off events. For 956432/967076 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 109382 event pairs, 244 based on Foata normal form. 19/11809 useless extension candidates. Maximal degree in co-relation 564313. Up to 6021 conditions per place. [2022-12-06 17:04:35,846 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 2295 selfloop transitions, 197 changer transitions 558/3129 dead transitions. [2022-12-06 17:04:35,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1788 places, 3129 transitions, 345194 flow [2022-12-06 17:04:35,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-06 17:04:35,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-06 17:04:35,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2543 transitions. [2022-12-06 17:04:35,848 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5515072652353069 [2022-12-06 17:04:35,848 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1647 predicate places. [2022-12-06 17:04:35,848 INFO L495 AbstractCegarLoop]: Abstraction has has 1788 places, 3129 transitions, 345194 flow [2022-12-06 17:04:35,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:04:35,848 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:04:35,848 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] [2022-12-06 17:04:35,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-12-06 17:04:35,849 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:04:35,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:04:35,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1140690189, now seen corresponding path program 30 times [2022-12-06 17:04:35,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:04:35,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835438151] [2022-12-06 17:04:35,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:04:35,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:04:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:04:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:04:36,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:04:36,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835438151] [2022-12-06 17:04:36,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835438151] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:04:36,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:04:36,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 17:04:36,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126104702] [2022-12-06 17:04:36,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:04:36,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 17:04:36,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:04:36,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 17:04:36,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-12-06 17:04:36,427 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-06 17:04:36,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1788 places, 3129 transitions, 345194 flow. Second operand has 20 states, 20 states have (on average 83.8) internal successors, (1676), 20 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:04:36,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:04:36,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-06 17:04:36,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:04:47,977 INFO L130 PetriNetUnfolder]: 6461/12672 cut-off events. [2022-12-06 17:04:47,977 INFO L131 PetriNetUnfolder]: For 1037509/1048023 co-relation queries the response was YES. [2022-12-06 17:04:47,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641733 conditions, 12672 events. 6461/12672 cut-off events. For 1037509/1048023 co-relation queries the response was YES. Maximal size of possible extension queue 775. Compared 110685 event pairs, 173 based on Foata normal form. 20/11953 useless extension candidates. Maximal degree in co-relation 579681. Up to 6025 conditions per place. [2022-12-06 17:04:48,197 INFO L137 encePairwiseOnDemand]: 126/159 looper letters, 2253 selfloop transitions, 282 changer transitions 563/3177 dead transitions. [2022-12-06 17:04:48,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1815 places, 3177 transitions, 356654 flow [2022-12-06 17:04:48,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-06 17:04:48,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-06 17:04:48,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2469 transitions. [2022-12-06 17:04:48,199 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5545822102425876 [2022-12-06 17:04:48,199 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1674 predicate places. [2022-12-06 17:04:48,199 INFO L495 AbstractCegarLoop]: Abstraction has has 1815 places, 3177 transitions, 356654 flow [2022-12-06 17:04:48,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 83.8) internal successors, (1676), 20 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:04:48,199 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:04:48,199 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] [2022-12-06 17:04:48,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-12-06 17:04:48,200 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:04:48,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:04:48,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1861962699, now seen corresponding path program 31 times [2022-12-06 17:04:48,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:04:48,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768981699] [2022-12-06 17:04:48,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:04:48,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:04:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:04:48,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:04:48,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:04:48,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768981699] [2022-12-06 17:04:48,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768981699] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:04:48,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:04:48,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-06 17:04:48,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486693447] [2022-12-06 17:04:48,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:04:48,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-06 17:04:48,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:04:48,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-06 17:04:48,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-12-06 17:04:48,800 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-06 17:04:48,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1815 places, 3177 transitions, 356654 flow. Second operand has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:04:48,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:04:48,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-06 17:04:48,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:05:01,518 INFO L130 PetriNetUnfolder]: 6481/12651 cut-off events. [2022-12-06 17:05:01,518 INFO L131 PetriNetUnfolder]: For 1025290/1036532 co-relation queries the response was YES. [2022-12-06 17:05:01,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654873 conditions, 12651 events. 6481/12651 cut-off events. For 1025290/1036532 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 110247 event pairs, 238 based on Foata normal form. 24/11936 useless extension candidates. Maximal degree in co-relation 591792. Up to 6029 conditions per place. [2022-12-06 17:05:01,744 INFO L137 encePairwiseOnDemand]: 126/159 looper letters, 2253 selfloop transitions, 296 changer transitions 563/3191 dead transitions. [2022-12-06 17:05:01,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1841 places, 3191 transitions, 364430 flow [2022-12-06 17:05:01,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-06 17:05:01,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-06 17:05:01,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2379 transitions. [2022-12-06 17:05:01,746 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5541579315164221 [2022-12-06 17:05:01,746 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1700 predicate places. [2022-12-06 17:05:01,746 INFO L495 AbstractCegarLoop]: Abstraction has has 1841 places, 3191 transitions, 364430 flow [2022-12-06 17:05:01,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:05:01,746 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:05:01,746 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] [2022-12-06 17:05:01,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-12-06 17:05:01,747 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:05:01,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:05:01,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1223319377, now seen corresponding path program 32 times [2022-12-06 17:05:01,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:05:01,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797982233] [2022-12-06 17:05:01,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:05:01,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:05:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:05:02,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:05:02,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:05:02,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797982233] [2022-12-06 17:05:02,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797982233] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:05:02,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:05:02,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-06 17:05:02,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242474162] [2022-12-06 17:05:02,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:05:02,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-06 17:05:02,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:05:02,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-06 17:05:02,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-12-06 17:05:02,380 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-06 17:05:02,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1841 places, 3191 transitions, 364430 flow. Second operand has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:05:02,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:05:02,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-06 17:05:02,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:05:14,528 INFO L130 PetriNetUnfolder]: 6469/12631 cut-off events. [2022-12-06 17:05:14,528 INFO L131 PetriNetUnfolder]: For 1049804/1061350 co-relation queries the response was YES. [2022-12-06 17:05:14,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665074 conditions, 12631 events. 6469/12631 cut-off events. For 1049804/1061350 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 110082 event pairs, 240 based on Foata normal form. 18/11912 useless extension candidates. Maximal degree in co-relation 600951. Up to 6027 conditions per place. [2022-12-06 17:05:14,867 INFO L137 encePairwiseOnDemand]: 126/159 looper letters, 2320 selfloop transitions, 216 changer transitions 569/3184 dead transitions. [2022-12-06 17:05:14,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1867 places, 3184 transitions, 369778 flow [2022-12-06 17:05:14,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-06 17:05:14,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-06 17:05:14,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2378 transitions. [2022-12-06 17:05:14,869 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5539249941765665 [2022-12-06 17:05:14,871 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1726 predicate places. [2022-12-06 17:05:14,871 INFO L495 AbstractCegarLoop]: Abstraction has has 1867 places, 3184 transitions, 369778 flow [2022-12-06 17:05:14,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:05:14,871 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:05:14,871 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] [2022-12-06 17:05:14,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-12-06 17:05:14,872 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:05:14,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:05:14,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1152250505, now seen corresponding path program 33 times [2022-12-06 17:05:14,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:05:14,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001846318] [2022-12-06 17:05:14,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:05:14,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:05:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:05:15,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:05:15,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:05:15,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001846318] [2022-12-06 17:05:15,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001846318] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:05:15,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:05:15,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-06 17:05:15,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453856059] [2022-12-06 17:05:15,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:05:15,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-06 17:05:15,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:05:15,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-06 17:05:15,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2022-12-06 17:05:15,512 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-06 17:05:15,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1867 places, 3184 transitions, 369778 flow. Second operand has 22 states, 22 states have (on average 83.54545454545455) internal successors, (1838), 22 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:05:15,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:05:15,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-06 17:05:15,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:05:28,144 INFO L130 PetriNetUnfolder]: 6520/12751 cut-off events. [2022-12-06 17:05:28,144 INFO L131 PetriNetUnfolder]: For 1121936/1133864 co-relation queries the response was YES. [2022-12-06 17:05:28,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681841 conditions, 12751 events. 6520/12751 cut-off events. For 1121936/1133864 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 111678 event pairs, 244 based on Foata normal form. 18/12032 useless extension candidates. Maximal degree in co-relation 615693. Up to 6159 conditions per place. [2022-12-06 17:05:28,376 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 2253 selfloop transitions, 310 changer transitions 569/3211 dead transitions. [2022-12-06 17:05:28,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1897 places, 3211 transitions, 379282 flow [2022-12-06 17:05:28,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-06 17:05:28,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-06 17:05:28,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2731 transitions. [2022-12-06 17:05:28,378 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5540677622235748 [2022-12-06 17:05:28,378 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1756 predicate places. [2022-12-06 17:05:28,378 INFO L495 AbstractCegarLoop]: Abstraction has has 1897 places, 3211 transitions, 379282 flow [2022-12-06 17:05:28,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 83.54545454545455) internal successors, (1838), 22 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:05:28,378 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:05:28,378 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] [2022-12-06 17:05:28,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-12-06 17:05:28,379 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:05:28,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:05:28,379 INFO L85 PathProgramCache]: Analyzing trace with hash -781286095, now seen corresponding path program 34 times [2022-12-06 17:05:28,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:05:28,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254210920] [2022-12-06 17:05:28,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:05:28,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:05:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:05:28,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:05:28,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:05:28,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254210920] [2022-12-06 17:05:28,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254210920] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:05:28,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:05:28,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-06 17:05:28,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84267236] [2022-12-06 17:05:28,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:05:28,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-06 17:05:28,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:05:28,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-06 17:05:28,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-12-06 17:05:28,991 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-06 17:05:28,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1897 places, 3211 transitions, 379282 flow. Second operand has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:05:28,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:05:28,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-06 17:05:28,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:05:42,102 INFO L130 PetriNetUnfolder]: 6470/12671 cut-off events. [2022-12-06 17:05:42,103 INFO L131 PetriNetUnfolder]: For 1127554/1140310 co-relation queries the response was YES. [2022-12-06 17:05:42,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 688085 conditions, 12671 events. 6470/12671 cut-off events. For 1127554/1140310 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 110772 event pairs, 284 based on Foata normal form. 19/11962 useless extension candidates. Maximal degree in co-relation 620879. Up to 6153 conditions per place. [2022-12-06 17:05:42,440 INFO L137 encePairwiseOnDemand]: 126/159 looper letters, 2334 selfloop transitions, 196 changer transitions 574/3183 dead transitions. [2022-12-06 17:05:42,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1921 places, 3183 transitions, 382090 flow [2022-12-06 17:05:42,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-06 17:05:42,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-06 17:05:42,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2382 transitions. [2022-12-06 17:05:42,442 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5548567435359888 [2022-12-06 17:05:42,442 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1780 predicate places. [2022-12-06 17:05:42,442 INFO L495 AbstractCegarLoop]: Abstraction has has 1921 places, 3183 transitions, 382090 flow [2022-12-06 17:05:42,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:05:42,442 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:05:42,443 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] [2022-12-06 17:05:42,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-12-06 17:05:42,443 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:05:42,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:05:42,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1079335787, now seen corresponding path program 35 times [2022-12-06 17:05:42,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:05:42,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884787968] [2022-12-06 17:05:42,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:05:42,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:05:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:05:43,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:05:43,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:05:43,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884787968] [2022-12-06 17:05:43,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884787968] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:05:43,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941541815] [2022-12-06 17:05:43,018 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-06 17:05:43,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:05:43,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:05:43,021 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:05:43,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-06 17:05:43,162 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 17:05:43,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:05:43,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 76 conjunts are in the unsatisfiable core [2022-12-06 17:05:43,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:05:43,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 17:05:43,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-06 17:05:43,737 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-06 17:05:43,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-12-06 17:05:43,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-06 17:05:44,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 17:05:44,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 17:05:44,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-06 17:05:44,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2022-12-06 17:05:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:05:44,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:05:45,399 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1204 (Array Int Int)) (v_ArrVal_1203 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_int_array_#t~malloc17#1.base_52| Int) (|ULTIMATE.start_create_fresh_int_array_#t~nondet19#1| Int)) (let ((.cse4 (store (store |c_#memory_int| |v_ULTIMATE.start_create_fresh_int_array_#t~malloc17#1.base_52| (store (select |c_#memory_int| |v_ULTIMATE.start_create_fresh_int_array_#t~malloc17#1.base_52|) 0 |ULTIMATE.start_create_fresh_int_array_#t~nondet19#1|)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1203))) (let ((.cse0 (store .cse4 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1204))) (let ((.cse2 (select .cse0 |v_ULTIMATE.start_create_fresh_int_array_#t~malloc17#1.base_52|))) (or (let ((.cse1 (* c_~i_BA~0 4))) (= (select (select .cse0 |c_ULTIMATE.start_main_#t~ret9#1.base|) (+ .cse1 |c_ULTIMATE.start_main_#t~ret9#1.offset|)) (select .cse2 .cse1))) (not (< |v_ULTIMATE.start_create_fresh_int_array_#t~malloc17#1.base_52| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_#t~malloc17#1.base_52|) 0)) (not (let ((.cse3 (* c_~i_AB~0 4))) (= (select .cse2 .cse3) (select (select .cse4 |c_ULTIMATE.start_main_#t~ret9#1.base|) (+ |c_ULTIMATE.start_main_#t~ret9#1.offset| .cse3)))))))))) is different from false [2022-12-06 17:05:45,484 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1204 (Array Int Int)) (v_ArrVal_1203 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_int_array_#t~malloc17#1.base_52| Int) (|ULTIMATE.start_create_fresh_int_array_#t~nondet19#1| Int)) (let ((.cse2 (store (store |c_#memory_int| |v_ULTIMATE.start_create_fresh_int_array_#t~malloc17#1.base_52| (store (select |c_#memory_int| |v_ULTIMATE.start_create_fresh_int_array_#t~malloc17#1.base_52|) 0 |ULTIMATE.start_create_fresh_int_array_#t~nondet19#1|)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1203))) (let ((.cse3 (store .cse2 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1204))) (let ((.cse0 (select .cse3 |v_ULTIMATE.start_create_fresh_int_array_#t~malloc17#1.base_52|))) (or (not (< |v_ULTIMATE.start_create_fresh_int_array_#t~malloc17#1.base_52| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_#t~malloc17#1.base_52|) 0)) (not (let ((.cse1 (* c_~i_AB~0 4))) (= (select .cse0 .cse1) (select (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) (let ((.cse4 (* c_~i_BA~0 4))) (= (select (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse0 .cse4)))))))) is different from false [2022-12-06 17:05:45,543 INFO L321 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2022-12-06 17:05:45,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 185 treesize of output 91 [2022-12-06 17:05:45,604 INFO L321 Elim1Store]: treesize reduction 15, result has 89.2 percent of original size [2022-12-06 17:05:45,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1950 treesize of output 1753 [2022-12-06 17:05:45,647 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:05:45,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1612 treesize of output 1294 [2022-12-06 17:05:45,699 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:05:45,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1260 treesize of output 1104 [2022-12-06 17:05:49,196 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-06 17:05:49,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-06 17:05:49,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-06 17:05:49,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941541815] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:05:49,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:05:49,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25, 25] total 63 [2022-12-06 17:05:49,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809843527] [2022-12-06 17:05:49,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:05:49,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-12-06 17:05:49,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:05:49,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-12-06 17:05:49,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=488, Invalid=3108, Unknown=72, NotChecked=238, Total=3906 [2022-12-06 17:05:49,324 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 159 [2022-12-06 17:05:49,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1921 places, 3183 transitions, 382090 flow. Second operand has 63 states, 63 states have (on average 71.61904761904762) internal successors, (4512), 63 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:05:49,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:05:49,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 159 [2022-12-06 17:05:49,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:06:06,936 INFO L130 PetriNetUnfolder]: 6685/13109 cut-off events. [2022-12-06 17:06:06,937 INFO L131 PetriNetUnfolder]: For 1249584/1262491 co-relation queries the response was YES. [2022-12-06 17:06:06,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 721891 conditions, 13109 events. 6685/13109 cut-off events. For 1249584/1262491 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 115306 event pairs, 219 based on Foata normal form. 82/12459 useless extension candidates. Maximal degree in co-relation 652572. Up to 6319 conditions per place. [2022-12-06 17:06:07,290 INFO L137 encePairwiseOnDemand]: 118/159 looper letters, 2060 selfloop transitions, 580 changer transitions 579/3281 dead transitions. [2022-12-06 17:06:07,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1971 places, 3281 transitions, 400642 flow [2022-12-06 17:06:07,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-06 17:06:07,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-06 17:06:07,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 3853 transitions. [2022-12-06 17:06:07,292 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.47515106671599455 [2022-12-06 17:06:07,293 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1830 predicate places. [2022-12-06 17:06:07,293 INFO L495 AbstractCegarLoop]: Abstraction has has 1971 places, 3281 transitions, 400642 flow [2022-12-06 17:06:07,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 71.61904761904762) internal successors, (4512), 63 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:06:07,293 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:06:07,293 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] [2022-12-06 17:06:07,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-06 17:06:07,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-12-06 17:06:07,498 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:06:07,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:06:07,498 INFO L85 PathProgramCache]: Analyzing trace with hash -925269685, now seen corresponding path program 36 times [2022-12-06 17:06:07,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:06:07,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357439468] [2022-12-06 17:06:07,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:06:07,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:06:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:06:08,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:06:08,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:06:08,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357439468] [2022-12-06 17:06:08,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357439468] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:06:08,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312834836] [2022-12-06 17:06:08,174 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-06 17:06:08,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:06:08,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:06:08,175 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:06:08,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-06 17:06:08,279 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-06 17:06:08,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:06:08,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 53 conjunts are in the unsatisfiable core [2022-12-06 17:06:08,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:06:08,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-06 17:06:09,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 17:06:09,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 17:06:09,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-06 17:06:09,344 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:06:09,344 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 29 treesize of output 25 [2022-12-06 17:06:09,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:06:09,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:06:09,750 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:06:09,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 73 [2022-12-06 17:06:09,794 INFO L321 Elim1Store]: treesize reduction 15, result has 82.4 percent of original size [2022-12-06 17:06:09,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1032 treesize of output 925 [2022-12-06 17:06:09,815 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:06:09,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 856 treesize of output 676 [2022-12-06 17:06:09,849 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:06:09,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 640 treesize of output 580 [2022-12-06 17:06:12,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:06:12,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312834836] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:06:12,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:06:12,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24, 21] total 59 [2022-12-06 17:06:12,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667258876] [2022-12-06 17:06:12,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:06:12,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-12-06 17:06:12,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:06:12,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-12-06 17:06:12,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=2990, Unknown=27, NotChecked=0, Total=3422 [2022-12-06 17:06:12,032 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 159 [2022-12-06 17:06:12,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1971 places, 3281 transitions, 400642 flow. Second operand has 59 states, 59 states have (on average 71.79661016949153) internal successors, (4236), 59 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:06:12,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:06:12,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 159 [2022-12-06 17:06:12,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:06:31,946 INFO L130 PetriNetUnfolder]: 6909/13429 cut-off events. [2022-12-06 17:06:31,946 INFO L131 PetriNetUnfolder]: For 1223517/1235647 co-relation queries the response was YES. [2022-12-06 17:06:31,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757280 conditions, 13429 events. 6909/13429 cut-off events. For 1223517/1235647 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 118246 event pairs, 322 based on Foata normal form. 78/12762 useless extension candidates. Maximal degree in co-relation 685851. Up to 6487 conditions per place. [2022-12-06 17:06:32,359 INFO L137 encePairwiseOnDemand]: 118/159 looper letters, 2067 selfloop transitions, 693 changer transitions 579/3401 dead transitions. [2022-12-06 17:06:32,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2023 places, 3401 transitions, 422314 flow [2022-12-06 17:06:32,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-12-06 17:06:32,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-12-06 17:06:32,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 4026 transitions. [2022-12-06 17:06:32,362 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.477750088999644 [2022-12-06 17:06:32,362 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1882 predicate places. [2022-12-06 17:06:32,362 INFO L495 AbstractCegarLoop]: Abstraction has has 2023 places, 3401 transitions, 422314 flow [2022-12-06 17:06:32,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 71.79661016949153) internal successors, (4236), 59 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:06:32,363 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:06:32,363 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] [2022-12-06 17:06:32,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-06 17:06:32,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-12-06 17:06:32,567 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:06:32,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:06:32,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1771234037, now seen corresponding path program 37 times [2022-12-06 17:06:32,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:06:32,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889556659] [2022-12-06 17:06:32,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:06:32,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:06:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:06:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:06:33,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:06:33,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889556659] [2022-12-06 17:06:33,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889556659] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:06:33,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542129829] [2022-12-06 17:06:33,266 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-06 17:06:33,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:06:33,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:06:33,267 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:06:33,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-06 17:06:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:06:33,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 49 conjunts are in the unsatisfiable core [2022-12-06 17:06:33,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:06:33,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 17:06:33,480 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-06 17:06:33,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-12-06 17:06:33,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-06 17:06:33,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-06 17:06:34,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:06:34,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:06:34,112 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1274 (Array Int Int)) (~B~0.base Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1274))) (let ((.cse2 (select .cse0 ~B~0.base))) (or (let ((.cse1 (* c_~i_BA~0 4))) (= (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse1)) (select .cse2 (+ .cse1 c_~B~0.offset)))) (not (= (select .cse2 (+ c_~B~0.offset (* c_~i_AB~0 4))) |c_thread1Thread1of1ForFork1_#t~mem1|)))))) is different from false [2022-12-06 17:06:34,152 INFO L321 Elim1Store]: treesize reduction 15, result has 82.4 percent of original size [2022-12-06 17:06:34,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 146 treesize of output 159 [2022-12-06 17:06:34,166 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:06:34,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 96 [2022-12-06 17:06:34,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:06:34,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542129829] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:06:34,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:06:34,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 39 [2022-12-06 17:06:34,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340083264] [2022-12-06 17:06:34,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:06:34,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-06 17:06:34,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:06:34,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-06 17:06:34,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1218, Unknown=1, NotChecked=72, Total=1482 [2022-12-06 17:06:34,739 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 159 [2022-12-06 17:06:34,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2023 places, 3401 transitions, 422314 flow. Second operand has 39 states, 39 states have (on average 83.07692307692308) internal successors, (3240), 39 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:06:34,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:06:34,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 159 [2022-12-06 17:06:34,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:06:50,059 INFO L130 PetriNetUnfolder]: 6724/13080 cut-off events. [2022-12-06 17:06:50,059 INFO L131 PetriNetUnfolder]: For 1291194/1302378 co-relation queries the response was YES. [2022-12-06 17:06:50,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748545 conditions, 13080 events. 6724/13080 cut-off events. For 1291194/1302378 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 114710 event pairs, 187 based on Foata normal form. 82/12470 useless extension candidates. Maximal degree in co-relation 678661. Up to 6166 conditions per place. [2022-12-06 17:06:50,317 INFO L137 encePairwiseOnDemand]: 124/159 looper letters, 2106 selfloop transitions, 628 changer transitions 579/3391 dead transitions. [2022-12-06 17:06:50,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2064 places, 3391 transitions, 427651 flow [2022-12-06 17:06:50,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-06 17:06:50,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-12-06 17:06:50,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 3692 transitions. [2022-12-06 17:06:50,319 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5528601377657981 [2022-12-06 17:06:50,320 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1923 predicate places. [2022-12-06 17:06:50,320 INFO L495 AbstractCegarLoop]: Abstraction has has 2064 places, 3391 transitions, 427651 flow [2022-12-06 17:06:50,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 83.07692307692308) internal successors, (3240), 39 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:06:50,320 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:06:50,320 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] [2022-12-06 17:06:50,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-06 17:06:50,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-12-06 17:06:50,525 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:06:50,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:06:50,526 INFO L85 PathProgramCache]: Analyzing trace with hash -2129347705, now seen corresponding path program 26 times [2022-12-06 17:06:50,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:06:50,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625864043] [2022-12-06 17:06:50,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:06:50,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:06:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:06:51,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:06:51,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:06:51,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625864043] [2022-12-06 17:06:51,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625864043] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:06:51,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:06:51,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-06 17:06:51,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281995237] [2022-12-06 17:06:51,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:06:51,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-06 17:06:51,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:06:51,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-06 17:06:51,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-12-06 17:06:51,179 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-06 17:06:51,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2064 places, 3391 transitions, 427651 flow. Second operand has 22 states, 22 states have (on average 83.54545454545455) internal successors, (1838), 22 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:06:51,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:06:51,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-06 17:06:51,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:07:05,920 INFO L130 PetriNetUnfolder]: 6808/13210 cut-off events. [2022-12-06 17:07:05,921 INFO L131 PetriNetUnfolder]: For 1305163/1316096 co-relation queries the response was YES. [2022-12-06 17:07:05,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 769191 conditions, 13210 events. 6808/13210 cut-off events. For 1305163/1316096 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 116026 event pairs, 179 based on Foata normal form. 15/12526 useless extension candidates. Maximal degree in co-relation 698265. Up to 6166 conditions per place. [2022-12-06 17:07:06,178 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 2438 selfloop transitions, 339 changer transitions 579/3435 dead transitions. [2022-12-06 17:07:06,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2093 places, 3435 transitions, 439995 flow [2022-12-06 17:07:06,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-06 17:07:06,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-06 17:07:06,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2637 transitions. [2022-12-06 17:07:06,180 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5528301886792453 [2022-12-06 17:07:06,180 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1952 predicate places. [2022-12-06 17:07:06,180 INFO L495 AbstractCegarLoop]: Abstraction has has 2093 places, 3435 transitions, 439995 flow [2022-12-06 17:07:06,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 83.54545454545455) internal successors, (1838), 22 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:07:06,181 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:07:06,181 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] [2022-12-06 17:07:06,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-12-06 17:07:06,181 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:07:06,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:07:06,181 INFO L85 PathProgramCache]: Analyzing trace with hash -139621141, now seen corresponding path program 27 times [2022-12-06 17:07:06,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:07:06,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349476987] [2022-12-06 17:07:06,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:07:06,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:07:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:07:06,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:07:06,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:07:06,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349476987] [2022-12-06 17:07:06,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349476987] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:07:06,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:07:06,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-06 17:07:06,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657324572] [2022-12-06 17:07:06,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:07:06,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-06 17:07:06,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:07:06,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-06 17:07:06,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-12-06 17:07:06,808 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-06 17:07:06,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2093 places, 3435 transitions, 439995 flow. Second operand has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:07:06,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:07:06,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-06 17:07:06,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:07:21,800 INFO L130 PetriNetUnfolder]: 6814/13167 cut-off events. [2022-12-06 17:07:21,801 INFO L131 PetriNetUnfolder]: For 1299845/1311718 co-relation queries the response was YES. [2022-12-06 17:07:21,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 781624 conditions, 13167 events. 6814/13167 cut-off events. For 1299845/1311718 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 115164 event pairs, 248 based on Foata normal form. 28/12492 useless extension candidates. Maximal degree in co-relation 709387. Up to 6166 conditions per place. [2022-12-06 17:07:22,116 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 2551 selfloop transitions, 223 changer transitions 587/3440 dead transitions. [2022-12-06 17:07:22,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2119 places, 3440 transitions, 447326 flow [2022-12-06 17:07:22,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-06 17:07:22,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-06 17:07:22,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2370 transitions. [2022-12-06 17:07:22,118 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5520614954577219 [2022-12-06 17:07:22,119 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 1978 predicate places. [2022-12-06 17:07:22,119 INFO L495 AbstractCegarLoop]: Abstraction has has 2119 places, 3440 transitions, 447326 flow [2022-12-06 17:07:22,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:07:22,119 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:07:22,119 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] [2022-12-06 17:07:22,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-12-06 17:07:22,119 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:07:22,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:07:22,120 INFO L85 PathProgramCache]: Analyzing trace with hash -770156071, now seen corresponding path program 28 times [2022-12-06 17:07:22,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:07:22,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861725259] [2022-12-06 17:07:22,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:07:22,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:07:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:07:22,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:07:22,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:07:22,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861725259] [2022-12-06 17:07:22,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861725259] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:07:22,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:07:22,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-06 17:07:22,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38885142] [2022-12-06 17:07:22,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:07:22,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-06 17:07:22,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:07:22,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-06 17:07:22,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-12-06 17:07:22,720 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-06 17:07:22,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2119 places, 3440 transitions, 447326 flow. Second operand has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:07:22,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:07:22,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-06 17:07:22,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:07:39,441 INFO L130 PetriNetUnfolder]: 6820/13254 cut-off events. [2022-12-06 17:07:39,441 INFO L131 PetriNetUnfolder]: For 1407158/1418653 co-relation queries the response was YES. [2022-12-06 17:07:39,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794211 conditions, 13254 events. 6820/13254 cut-off events. For 1407158/1418653 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 116546 event pairs, 199 based on Foata normal form. 34/12589 useless extension candidates. Maximal degree in co-relation 720637. Up to 6166 conditions per place. [2022-12-06 17:07:39,797 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 2551 selfloop transitions, 212 changer transitions 603/3445 dead transitions. [2022-12-06 17:07:39,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2148 places, 3445 transitions, 454677 flow [2022-12-06 17:07:39,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-06 17:07:39,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-06 17:07:39,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2627 transitions. [2022-12-06 17:07:39,798 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.550733752620545 [2022-12-06 17:07:39,799 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 2007 predicate places. [2022-12-06 17:07:39,799 INFO L495 AbstractCegarLoop]: Abstraction has has 2148 places, 3445 transitions, 454677 flow [2022-12-06 17:07:39,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:07:39,799 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:07:39,799 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] [2022-12-06 17:07:39,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-12-06 17:07:39,799 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:07:39,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:07:39,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1422766741, now seen corresponding path program 29 times [2022-12-06 17:07:39,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:07:39,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810205233] [2022-12-06 17:07:39,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:07:39,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:07:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:07:40,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:07:40,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:07:40,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810205233] [2022-12-06 17:07:40,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810205233] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:07:40,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:07:40,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-06 17:07:40,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910119744] [2022-12-06 17:07:40,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:07:40,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-06 17:07:40,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:07:40,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-06 17:07:40,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-12-06 17:07:40,403 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-06 17:07:40,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2148 places, 3445 transitions, 454677 flow. Second operand has 22 states, 22 states have (on average 83.54545454545455) internal successors, (1838), 22 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:07:40,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:07:40,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-06 17:07:40,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:07:56,743 INFO L130 PetriNetUnfolder]: 6865/13313 cut-off events. [2022-12-06 17:07:56,743 INFO L131 PetriNetUnfolder]: For 1417689/1430321 co-relation queries the response was YES. [2022-12-06 17:07:56,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811020 conditions, 13313 events. 6865/13313 cut-off events. For 1417689/1430321 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 117263 event pairs, 304 based on Foata normal form. 15/12619 useless extension candidates. Maximal degree in co-relation 736396. Up to 6166 conditions per place. [2022-12-06 17:07:57,005 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 2454 selfloop transitions, 332 changer transitions 603/3468 dead transitions. [2022-12-06 17:07:57,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2175 places, 3468 transitions, 464519 flow [2022-12-06 17:07:57,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-06 17:07:57,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-06 17:07:57,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2469 transitions. [2022-12-06 17:07:57,007 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5545822102425876 [2022-12-06 17:07:57,007 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 2034 predicate places. [2022-12-06 17:07:57,007 INFO L495 AbstractCegarLoop]: Abstraction has has 2175 places, 3468 transitions, 464519 flow [2022-12-06 17:07:57,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 83.54545454545455) internal successors, (1838), 22 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:07:57,007 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:07:57,007 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] [2022-12-06 17:07:57,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-12-06 17:07:57,008 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:07:57,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:07:57,008 INFO L85 PathProgramCache]: Analyzing trace with hash 575071755, now seen corresponding path program 30 times [2022-12-06 17:07:57,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:07:57,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818383778] [2022-12-06 17:07:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:07:57,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:07:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:07:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:07:57,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:07:57,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818383778] [2022-12-06 17:07:57,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818383778] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:07:57,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489770483] [2022-12-06 17:07:57,665 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-06 17:07:57,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:07:57,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:07:57,668 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:07:57,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-06 17:07:57,883 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-06 17:07:57,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:07:57,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-06 17:07:57,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:07:58,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 17:07:58,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-06 17:07:58,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-06 17:07:58,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:07:58,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:07:58,758 WARN L837 $PredicateComparison]: unable to prove that (forall ((~B~0.base Int) (v_ArrVal_1371 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1371))) (let ((.cse0 (select .cse2 ~B~0.base))) (or (not (let ((.cse1 (* c_~i_BA~0 4))) (= (select .cse0 (+ .cse1 c_~B~0.offset)) (select (select .cse2 c_~A~0.base) (+ c_~A~0.offset .cse1))))) (= |c_thread1Thread1of1ForFork1_#t~mem1| (select .cse0 (+ c_~B~0.offset (* c_~i_AB~0 4)))))))) is different from false [2022-12-06 17:07:58,792 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:07:58,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 148 treesize of output 176 [2022-12-06 17:07:58,804 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:07:58,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 90 [2022-12-06 17:07:59,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:07:59,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489770483] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:07:59,318 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:07:59,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 48 [2022-12-06 17:07:59,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613034368] [2022-12-06 17:07:59,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:07:59,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-06 17:07:59,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:07:59,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-06 17:07:59,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=1902, Unknown=1, NotChecked=90, Total=2256 [2022-12-06 17:07:59,321 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 159 [2022-12-06 17:07:59,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2175 places, 3468 transitions, 464519 flow. Second operand has 48 states, 48 states have (on average 82.72916666666667) internal successors, (3971), 48 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:07:59,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:07:59,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 159 [2022-12-06 17:07:59,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:08:15,573 INFO L130 PetriNetUnfolder]: 6924/13386 cut-off events. [2022-12-06 17:08:15,573 INFO L131 PetriNetUnfolder]: For 1435927/1448625 co-relation queries the response was YES. [2022-12-06 17:08:15,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829468 conditions, 13386 events. 6924/13386 cut-off events. For 1435927/1448625 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 117859 event pairs, 248 based on Foata normal form. 40/12713 useless extension candidates. Maximal degree in co-relation 753787. Up to 6188 conditions per place. [2022-12-06 17:08:15,894 INFO L137 encePairwiseOnDemand]: 126/159 looper letters, 2317 selfloop transitions, 523 changer transitions 603/3521 dead transitions. [2022-12-06 17:08:15,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2213 places, 3521 transitions, 478595 flow [2022-12-06 17:08:15,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-06 17:08:15,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-06 17:08:15,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3416 transitions. [2022-12-06 17:08:15,896 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.550878890501532 [2022-12-06 17:08:15,897 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 2072 predicate places. [2022-12-06 17:08:15,897 INFO L495 AbstractCegarLoop]: Abstraction has has 2213 places, 3521 transitions, 478595 flow [2022-12-06 17:08:15,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 82.72916666666667) internal successors, (3971), 48 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:08:15,897 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:08:15,897 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] [2022-12-06 17:08:15,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-06 17:08:16,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2022-12-06 17:08:16,102 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:08:16,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:08:16,102 INFO L85 PathProgramCache]: Analyzing trace with hash 867595083, now seen corresponding path program 31 times [2022-12-06 17:08:16,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:08:16,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705528990] [2022-12-06 17:08:16,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:08:16,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:08:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:08:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:08:16,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:08:16,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705528990] [2022-12-06 17:08:16,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705528990] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:08:16,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:08:16,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-06 17:08:16,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230013361] [2022-12-06 17:08:16,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:08:16,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-06 17:08:16,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:08:16,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-06 17:08:16,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-12-06 17:08:16,669 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-06 17:08:16,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2213 places, 3521 transitions, 478595 flow. Second operand has 22 states, 22 states have (on average 83.54545454545455) internal successors, (1838), 22 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:08:16,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:08:16,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-06 17:08:16,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:08:32,894 INFO L130 PetriNetUnfolder]: 6750/13083 cut-off events. [2022-12-06 17:08:32,895 INFO L131 PetriNetUnfolder]: For 1444724/1456887 co-relation queries the response was YES. [2022-12-06 17:08:32,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 822329 conditions, 13083 events. 6750/13083 cut-off events. For 1444724/1456887 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 114620 event pairs, 244 based on Foata normal form. 19/12435 useless extension candidates. Maximal degree in co-relation 745875. Up to 6188 conditions per place. [2022-12-06 17:08:33,247 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 2467 selfloop transitions, 319 changer transitions 603/3468 dead transitions. [2022-12-06 17:08:33,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2227 places, 3468 transitions, 477992 flow [2022-12-06 17:08:33,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-06 17:08:33,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-06 17:08:33,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2473 transitions. [2022-12-06 17:08:33,248 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5554806828391734 [2022-12-06 17:08:33,249 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 2086 predicate places. [2022-12-06 17:08:33,249 INFO L495 AbstractCegarLoop]: Abstraction has has 2227 places, 3468 transitions, 477992 flow [2022-12-06 17:08:33,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 83.54545454545455) internal successors, (1838), 22 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:08:33,249 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:08:33,249 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] [2022-12-06 17:08:33,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-12-06 17:08:33,249 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:08:33,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:08:33,249 INFO L85 PathProgramCache]: Analyzing trace with hash -266429045, now seen corresponding path program 32 times [2022-12-06 17:08:33,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:08:33,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330744503] [2022-12-06 17:08:33,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:08:33,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:08:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:08:33,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:08:33,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:08:33,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330744503] [2022-12-06 17:08:33,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330744503] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:08:33,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:08:33,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-06 17:08:33,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568375941] [2022-12-06 17:08:33,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:08:33,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-06 17:08:33,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:08:33,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-06 17:08:33,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-12-06 17:08:33,846 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-06 17:08:33,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2227 places, 3468 transitions, 477992 flow. Second operand has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:08:33,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:08:33,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-06 17:08:33,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:08:51,870 INFO L130 PetriNetUnfolder]: 6648/12832 cut-off events. [2022-12-06 17:08:51,870 INFO L131 PetriNetUnfolder]: For 1451070/1463558 co-relation queries the response was YES. [2022-12-06 17:08:51,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 819370 conditions, 12832 events. 6648/12832 cut-off events. For 1451070/1463558 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 111848 event pairs, 252 based on Foata normal form. 32/12217 useless extension candidates. Maximal degree in co-relation 747029. Up to 6188 conditions per place. [2022-12-06 17:08:52,141 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 2543 selfloop transitions, 209 changer transitions 609/3437 dead transitions. [2022-12-06 17:08:52,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2253 places, 3437 transitions, 480746 flow [2022-12-06 17:08:52,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-06 17:08:52,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-06 17:08:52,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2452 transitions. [2022-12-06 17:08:52,143 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.550763701707098 [2022-12-06 17:08:52,143 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 2112 predicate places. [2022-12-06 17:08:52,143 INFO L495 AbstractCegarLoop]: Abstraction has has 2253 places, 3437 transitions, 480746 flow [2022-12-06 17:08:52,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:08:52,144 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:08:52,144 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] [2022-12-06 17:08:52,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-12-06 17:08:52,144 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:08:52,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:08:52,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1626557955, now seen corresponding path program 1 times [2022-12-06 17:08:52,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:08:52,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922520936] [2022-12-06 17:08:52,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:08:52,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:08:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:08:52,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:08:52,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:08:52,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922520936] [2022-12-06 17:08:52,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922520936] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:08:52,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273762027] [2022-12-06 17:08:52,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:08:52,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:08:52,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:08:52,364 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:08:52,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-06 17:08:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:08:52,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-06 17:08:52,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:08:52,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:08:52,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:08:52,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-06 17:08:52,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273762027] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:08:52,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:08:52,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 14 [2022-12-06 17:08:52,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242171327] [2022-12-06 17:08:52,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:08:52,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 17:08:52,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:08:52,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 17:08:52,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-12-06 17:08:53,000 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 159 [2022-12-06 17:08:53,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2253 places, 3437 transitions, 480746 flow. Second operand has 14 states, 14 states have (on average 109.5) internal successors, (1533), 14 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:08:53,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:08:53,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 159 [2022-12-06 17:08:53,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:09:24,448 INFO L130 PetriNetUnfolder]: 11813/22785 cut-off events. [2022-12-06 17:09:24,448 INFO L131 PetriNetUnfolder]: For 3575953/3603308 co-relation queries the response was YES. [2022-12-06 17:09:24,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448290 conditions, 22785 events. 11813/22785 cut-off events. For 3575953/3603308 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 205034 event pairs, 549 based on Foata normal form. 68/21511 useless extension candidates. Maximal degree in co-relation 1308251. Up to 14792 conditions per place. [2022-12-06 17:09:25,112 INFO L137 encePairwiseOnDemand]: 143/159 looper letters, 1617 selfloop transitions, 325 changer transitions 644/4335 dead transitions. [2022-12-06 17:09:25,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2282 places, 4335 transitions, 617111 flow [2022-12-06 17:09:25,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-06 17:09:25,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-06 17:09:25,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3346 transitions. [2022-12-06 17:09:25,114 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7014675052410901 [2022-12-06 17:09:25,114 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 2141 predicate places. [2022-12-06 17:09:25,114 INFO L495 AbstractCegarLoop]: Abstraction has has 2282 places, 4335 transitions, 617111 flow [2022-12-06 17:09:25,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 109.5) internal successors, (1533), 14 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:09:25,115 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:09:25,115 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] [2022-12-06 17:09:25,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-06 17:09:25,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-12-06 17:09:25,320 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:09:25,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:09:25,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1492157245, now seen corresponding path program 2 times [2022-12-06 17:09:25,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:09:25,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094095131] [2022-12-06 17:09:25,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:09:25,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:09:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:09:25,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:09:25,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:09:25,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094095131] [2022-12-06 17:09:25,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094095131] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:09:25,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285158531] [2022-12-06 17:09:25,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 17:09:25,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:09:25,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:09:25,520 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:09:25,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-06 17:09:25,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 17:09:25,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:09:25,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-06 17:09:25,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:09:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:09:26,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:09:26,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-06 17:09:26,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285158531] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:09:26,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:09:26,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 14 [2022-12-06 17:09:26,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937295836] [2022-12-06 17:09:26,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:09:26,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 17:09:26,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:09:26,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 17:09:26,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-12-06 17:09:26,304 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 159 [2022-12-06 17:09:26,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2282 places, 4335 transitions, 617111 flow. Second operand has 14 states, 14 states have (on average 109.5) internal successors, (1533), 14 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:09:26,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:09:26,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 159 [2022-12-06 17:09:26,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:10:26,354 INFO L130 PetriNetUnfolder]: 13408/25922 cut-off events. [2022-12-06 17:10:26,354 INFO L131 PetriNetUnfolder]: For 4178817/4207967 co-relation queries the response was YES. [2022-12-06 17:10:26,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1647666 conditions, 25922 events. 13408/25922 cut-off events. For 4178817/4207967 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 236380 event pairs, 635 based on Foata normal form. 116/24426 useless extension candidates. Maximal degree in co-relation 1487532. Up to 17381 conditions per place. [2022-12-06 17:10:27,171 INFO L137 encePairwiseOnDemand]: 143/159 looper letters, 1903 selfloop transitions, 289 changer transitions 678/4619 dead transitions. [2022-12-06 17:10:27,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2320 places, 4619 transitions, 660705 flow [2022-12-06 17:10:27,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-06 17:10:27,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-06 17:10:27,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 4274 transitions. [2022-12-06 17:10:27,174 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6892436703757459 [2022-12-06 17:10:27,174 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 2179 predicate places. [2022-12-06 17:10:27,174 INFO L495 AbstractCegarLoop]: Abstraction has has 2320 places, 4619 transitions, 660705 flow [2022-12-06 17:10:27,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 109.5) internal successors, (1533), 14 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:10:27,174 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:10:27,175 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] [2022-12-06 17:10:27,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-06 17:10:27,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-12-06 17:10:27,380 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:10:27,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:10:27,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1471763487, now seen corresponding path program 3 times [2022-12-06 17:10:27,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:10:27,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927583587] [2022-12-06 17:10:27,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:10:27,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:10:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:10:27,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:10:27,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:10:27,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927583587] [2022-12-06 17:10:27,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927583587] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:10:27,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402464142] [2022-12-06 17:10:27,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 17:10:27,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:10:27,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:10:27,508 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:10:27,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-06 17:10:27,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-06 17:10:27,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:10:27,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-06 17:10:27,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:10:27,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:10:27,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:10:28,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-06 17:10:28,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402464142] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:10:28,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:10:28,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 14 [2022-12-06 17:10:28,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762200168] [2022-12-06 17:10:28,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:10:28,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 17:10:28,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:10:28,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 17:10:28,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-12-06 17:10:28,153 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 159 [2022-12-06 17:10:28,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2320 places, 4619 transitions, 660705 flow. Second operand has 14 states, 14 states have (on average 109.5) internal successors, (1533), 14 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:10:28,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:10:28,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 159 [2022-12-06 17:10:28,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:11:49,418 INFO L130 PetriNetUnfolder]: 14811/28623 cut-off events. [2022-12-06 17:11:49,418 INFO L131 PetriNetUnfolder]: For 4514544/4543174 co-relation queries the response was YES. [2022-12-06 17:11:49,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1828516 conditions, 28623 events. 14811/28623 cut-off events. For 4514544/4543174 co-relation queries the response was YES. Maximal size of possible extension queue 1006. Compared 264217 event pairs, 822 based on Foata normal form. 89/26838 useless extension candidates. Maximal degree in co-relation 1649267. Up to 19690 conditions per place. [2022-12-06 17:11:50,196 INFO L137 encePairwiseOnDemand]: 143/159 looper letters, 2104 selfloop transitions, 273 changer transitions 710/4836 dead transitions. [2022-12-06 17:11:50,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2353 places, 4836 transitions, 696719 flow [2022-12-06 17:11:50,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-06 17:11:50,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-06 17:11:50,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3744 transitions. [2022-12-06 17:11:50,197 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6925638179800222 [2022-12-06 17:11:50,198 INFO L294 CegarLoopForPetriNet]: 141 programPoint places, 2212 predicate places. [2022-12-06 17:11:50,198 INFO L495 AbstractCegarLoop]: Abstraction has has 2353 places, 4836 transitions, 696719 flow [2022-12-06 17:11:50,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 109.5) internal successors, (1533), 14 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:11:50,198 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:11:50,198 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] [2022-12-06 17:11:50,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-06 17:11:50,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:11:50,403 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:11:50,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:11:50,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1600735351, now seen corresponding path program 4 times [2022-12-06 17:11:50,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:11:50,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925491726] [2022-12-06 17:11:50,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:11:50,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:11:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:11:50,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:11:50,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:11:50,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925491726] [2022-12-06 17:11:50,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925491726] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:11:50,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516315132] [2022-12-06 17:11:50,520 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-06 17:11:50,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:11:50,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:11:50,521 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:11:50,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-06 17:11:50,631 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-06 17:11:50,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:11:50,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-06 17:11:50,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:11:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:11:50,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:11:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-06 17:11:51,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516315132] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:11:51,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:11:51,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 14 [2022-12-06 17:11:51,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051878436] [2022-12-06 17:11:51,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:11:51,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 17:11:51,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:11:51,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 17:11:51,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-12-06 17:11:51,174 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 159 [2022-12-06 17:11:51,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2353 places, 4836 transitions, 696719 flow. Second operand has 14 states, 14 states have (on average 109.5) internal successors, (1533), 14 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:11:51,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:11:51,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 159 [2022-12-06 17:11:51,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-06 17:12:32,961 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 17:12:32,968 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 17:12:33,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-06 17:12:33,004 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-06 17:12:33,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-06 17:12:33,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:12:33,209 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (14states, 104/159 universal loopers) in iteration 80,while PetriNetUnfolder was constructing finite prefix that currently has 1002686 conditions, 15553 events (7982/15552 cut-off events. For 2676990/2696692 co-relation queries the response was YES. Maximal size of possible extension queue 996. Compared 148847 event pairs, 224 based on Foata normal form. 20/15465 useless extension candidates. Maximal degree in co-relation 943091. Up to 8211 conditions per place.). [2022-12-06 17:12:33,217 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-06 17:12:33,217 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-06 17:12:33,218 INFO L458 BasicCegarLoop]: Path program histogram: [37, 32, 4, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:12:33,221 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 17:12:33,221 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 17:12:33,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:12:33 BasicIcfg [2022-12-06 17:12:33,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 17:12:33,224 INFO L158 Benchmark]: Toolchain (without parser) took 800449.34ms. Allocated memory was 242.2MB in the beginning and 4.9GB in the end (delta: 4.6GB). Free memory was 217.4MB in the beginning and 2.5GB in the end (delta: -2.3GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. [2022-12-06 17:12:33,224 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 242.2MB. Free memory was 219.0MB in the beginning and 218.9MB in the end (delta: 88.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 17:12:33,224 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.00ms. Allocated memory is still 242.2MB. Free memory was 216.9MB in the beginning and 205.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-12-06 17:12:33,224 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.26ms. Allocated memory is still 242.2MB. Free memory was 205.9MB in the beginning and 203.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 17:12:33,224 INFO L158 Benchmark]: Boogie Preprocessor took 32.03ms. Allocated memory is still 242.2MB. Free memory was 203.8MB in the beginning and 202.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 17:12:33,224 INFO L158 Benchmark]: RCFGBuilder took 366.01ms. Allocated memory is still 242.2MB. Free memory was 202.2MB in the beginning and 185.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-12-06 17:12:33,225 INFO L158 Benchmark]: TraceAbstraction took 799766.49ms. Allocated memory was 242.2MB in the beginning and 4.9GB in the end (delta: 4.6GB). Free memory was 184.9MB in the beginning and 2.5GB in the end (delta: -2.3GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2022-12-06 17:12:33,227 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 242.2MB. Free memory was 219.0MB in the beginning and 218.9MB in the end (delta: 88.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 240.00ms. Allocated memory is still 242.2MB. Free memory was 216.9MB in the beginning and 205.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.26ms. Allocated memory is still 242.2MB. Free memory was 205.9MB in the beginning and 203.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.03ms. Allocated memory is still 242.2MB. Free memory was 203.8MB in the beginning and 202.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 366.01ms. Allocated memory is still 242.2MB. Free memory was 202.2MB in the beginning and 185.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 799766.49ms. Allocated memory was 242.2MB in the beginning and 4.9GB in the end (delta: 4.6GB). Free memory was 184.9MB in the beginning and 2.5GB in the end (delta: -2.3GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (14states, 104/159 universal loopers) in iteration 80,while PetriNetUnfolder was constructing finite prefix that currently has 1002686 conditions, 15553 events (7982/15552 cut-off events. For 2676990/2696692 co-relation queries the response was YES. Maximal size of possible extension queue 996. Compared 148847 event pairs, 224 based on Foata normal form. 20/15465 useless extension candidates. Maximal degree in co-relation 943091. Up to 8211 conditions per place.). - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (14states, 104/159 universal loopers) in iteration 80,while PetriNetUnfolder was constructing finite prefix that currently has 1002686 conditions, 15553 events (7982/15552 cut-off events. For 2676990/2696692 co-relation queries the response was YES. Maximal size of possible extension queue 996. Compared 148847 event pairs, 224 based on Foata normal form. 20/15465 useless extension candidates. Maximal degree in co-relation 943091. Up to 8211 conditions per place.). - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (14states, 104/159 universal loopers) in iteration 80,while PetriNetUnfolder was constructing finite prefix that currently has 1002686 conditions, 15553 events (7982/15552 cut-off events. For 2676990/2696692 co-relation queries the response was YES. Maximal size of possible extension queue 996. Compared 148847 event pairs, 224 based on Foata normal form. 20/15465 useless extension candidates. Maximal degree in co-relation 943091. Up to 8211 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 175 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 799.7s, OverallIterations: 80, TraceHistogramMax: 1, PathProgramHistogramMax: 37, EmptinessCheckTime: 0.0s, AutomataDifference: 722.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29501 SdHoareTripleChecker+Valid, 27.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29501 mSDsluCounter, 40623 SdHoareTripleChecker+Invalid, 22.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 717 IncrementalHoareTripleChecker+Unchecked, 36179 mSDsCounter, 860 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 71626 IncrementalHoareTripleChecker+Invalid, 73203 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 860 mSolverCounterUnsat, 4444 mSDtfsCounter, 71626 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7002 GetRequests, 3676 SyntacticMatches, 34 SemanticMatches, 3292 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 31767 ImplicationChecksByTransitivity, 50.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=696719occurred in iteration=79, InterpolantAutomatonStates: 2308, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 69.7s InterpolantComputationTime, 11797 NumberOfCodeBlocks, 11785 NumberOfCodeBlocksAsserted, 105 NumberOfCheckSat, 13568 ConstructedInterpolants, 212 QuantifiedInterpolants, 140067 SizeOfPredicates, 296 NumberOfNonLiveVariables, 4340 ConjunctsInSsa, 546 ConjunctsInUnsatCore, 110 InterpolantComputations, 67 PerfectInterpolantSequences, 266/333 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown