/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 19:59:03,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 19:59:03,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 19:59:03,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 19:59:03,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 19:59:03,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 19:59:03,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 19:59:03,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 19:59:03,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 19:59:03,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 19:59:03,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 19:59:03,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 19:59:03,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 19:59:03,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 19:59:03,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 19:59:03,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 19:59:03,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 19:59:03,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 19:59:03,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 19:59:03,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 19:59:03,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 19:59:03,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 19:59:03,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 19:59:03,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 19:59:03,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 19:59:03,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 19:59:03,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 19:59:03,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 19:59:03,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 19:59:03,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 19:59:03,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 19:59:03,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 19:59:03,902 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 19:59:03,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 19:59:03,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 19:59:03,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 19:59:03,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 19:59:03,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 19:59:03,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 19:59:03,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 19:59:03,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 19:59:03,906 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 19:59:03,931 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 19:59:03,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 19:59:03,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 19:59:03,932 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 19:59:03,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 19:59:03,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 19:59:03,933 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 19:59:03,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 19:59:03,933 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 19:59:03,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 19:59:03,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 19:59:03,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 19:59:03,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 19:59:03,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 19:59:03,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 19:59:03,934 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 19:59:03,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 19:59:03,935 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 19:59:03,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 19:59:03,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 19:59:03,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 19:59:03,935 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 19:59:03,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 19:59:03,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:59:03,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 19:59:03,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 19:59:03,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 19:59:03,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 19:59:03,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 19:59:03,936 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 19:59:03,936 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 19:59:03,936 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 19:59:04,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 19:59:04,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 19:59:04,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 19:59:04,118 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 19:59:04,119 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 19:59:04,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2023-01-27 19:59:05,150 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 19:59:05,307 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 19:59:05,307 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2023-01-27 19:59:05,314 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9e0783de/9a57d2df14ca48088db44efda0524c15/FLAG90655f5cc [2023-01-27 19:59:05,330 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9e0783de/9a57d2df14ca48088db44efda0524c15 [2023-01-27 19:59:05,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 19:59:05,333 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 19:59:05,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 19:59:05,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 19:59:05,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 19:59:05,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:59:05" (1/1) ... [2023-01-27 19:59:05,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c40f727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:05, skipping insertion in model container [2023-01-27 19:59:05,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:59:05" (1/1) ... [2023-01-27 19:59:05,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 19:59:05,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 19:59:05,469 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c[2781,2794] [2023-01-27 19:59:05,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:59:05,483 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 19:59:05,497 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c[2781,2794] [2023-01-27 19:59:05,500 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:59:05,510 INFO L208 MainTranslator]: Completed translation [2023-01-27 19:59:05,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:05 WrapperNode [2023-01-27 19:59:05,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 19:59:05,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 19:59:05,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 19:59:05,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 19:59:05,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:05" (1/1) ... [2023-01-27 19:59:05,522 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:05" (1/1) ... [2023-01-27 19:59:05,539 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 287 [2023-01-27 19:59:05,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 19:59:05,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 19:59:05,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 19:59:05,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 19:59:05,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:05" (1/1) ... [2023-01-27 19:59:05,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:05" (1/1) ... [2023-01-27 19:59:05,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:05" (1/1) ... [2023-01-27 19:59:05,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:05" (1/1) ... [2023-01-27 19:59:05,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:05" (1/1) ... [2023-01-27 19:59:05,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:05" (1/1) ... [2023-01-27 19:59:05,563 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:05" (1/1) ... [2023-01-27 19:59:05,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:05" (1/1) ... [2023-01-27 19:59:05,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 19:59:05,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 19:59:05,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 19:59:05,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 19:59:05,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:05" (1/1) ... [2023-01-27 19:59:05,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:59:05,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:59:05,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 19:59:05,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 19:59:05,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 19:59:05,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 19:59:05,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 19:59:05,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 19:59:05,655 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 19:59:05,655 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 19:59:05,655 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 19:59:05,655 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 19:59:05,655 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 19:59:05,656 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 19:59:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 19:59:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 19:59:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 19:59:05,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 19:59:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 19:59:05,658 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 19:59:05,752 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 19:59:05,753 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 19:59:06,141 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 19:59:06,152 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 19:59:06,152 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-27 19:59:06,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:59:06 BoogieIcfgContainer [2023-01-27 19:59:06,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 19:59:06,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 19:59:06,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 19:59:06,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 19:59:06,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 07:59:05" (1/3) ... [2023-01-27 19:59:06,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35237f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:59:06, skipping insertion in model container [2023-01-27 19:59:06,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:05" (2/3) ... [2023-01-27 19:59:06,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35237f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:59:06, skipping insertion in model container [2023-01-27 19:59:06,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:59:06" (3/3) ... [2023-01-27 19:59:06,160 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2023-01-27 19:59:06,172 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 19:59:06,172 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 19:59:06,172 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 19:59:06,251 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-27 19:59:06,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 324 transitions, 672 flow [2023-01-27 19:59:06,380 INFO L130 PetriNetUnfolder]: 29/321 cut-off events. [2023-01-27 19:59:06,380 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 19:59:06,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 321 events. 29/321 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 505 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 245. Up to 3 conditions per place. [2023-01-27 19:59:06,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 324 transitions, 672 flow [2023-01-27 19:59:06,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 311 transitions, 640 flow [2023-01-27 19:59:06,408 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 19:59:06,419 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 292 places, 311 transitions, 640 flow [2023-01-27 19:59:06,421 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 292 places, 311 transitions, 640 flow [2023-01-27 19:59:06,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 311 transitions, 640 flow [2023-01-27 19:59:06,476 INFO L130 PetriNetUnfolder]: 29/311 cut-off events. [2023-01-27 19:59:06,477 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 19:59:06,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 311 events. 29/311 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 504 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 245. Up to 3 conditions per place. [2023-01-27 19:59:06,487 INFO L119 LiptonReduction]: Number of co-enabled transitions 14784 [2023-01-27 19:59:13,668 INFO L134 LiptonReduction]: Checked pairs total: 16261 [2023-01-27 19:59:13,668 INFO L136 LiptonReduction]: Total number of compositions: 353 [2023-01-27 19:59:13,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 19:59:13,682 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;@517b0fa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 19:59:13,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 19:59:13,693 INFO L130 PetriNetUnfolder]: 8/35 cut-off events. [2023-01-27 19:59:13,693 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 19:59:13,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:13,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:59:13,694 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:59:13,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:13,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1811737217, now seen corresponding path program 1 times [2023-01-27 19:59:13,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:13,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628614757] [2023-01-27 19:59:13,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:13,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:13,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:14,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:14,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:14,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628614757] [2023-01-27 19:59:14,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628614757] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:59:14,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:59:14,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 19:59:14,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979869435] [2023-01-27 19:59:14,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:59:14,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 19:59:14,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:14,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 19:59:14,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-27 19:59:14,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 677 [2023-01-27 19:59:14,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 90 flow. Second operand has 9 states, 9 states have (on average 236.44444444444446) internal successors, (2128), 9 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:14,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:14,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 677 [2023-01-27 19:59:14,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:15,242 INFO L130 PetriNetUnfolder]: 1997/2838 cut-off events. [2023-01-27 19:59:15,243 INFO L131 PetriNetUnfolder]: For 223/223 co-relation queries the response was YES. [2023-01-27 19:59:15,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5910 conditions, 2838 events. 1997/2838 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 11887 event pairs, 166 based on Foata normal form. 1/2235 useless extension candidates. Maximal degree in co-relation 2936. Up to 1149 conditions per place. [2023-01-27 19:59:15,257 INFO L137 encePairwiseOnDemand]: 665/677 looper letters, 118 selfloop transitions, 14 changer transitions 4/136 dead transitions. [2023-01-27 19:59:15,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 136 transitions, 607 flow [2023-01-27 19:59:15,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 19:59:15,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 19:59:15,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2479 transitions. [2023-01-27 19:59:15,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3661742983751846 [2023-01-27 19:59:15,278 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2479 transitions. [2023-01-27 19:59:15,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2479 transitions. [2023-01-27 19:59:15,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:15,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2479 transitions. [2023-01-27 19:59:15,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 247.9) internal successors, (2479), 10 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:15,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:15,303 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:15,304 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 90 flow. Second operand 10 states and 2479 transitions. [2023-01-27 19:59:15,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 136 transitions, 607 flow [2023-01-27 19:59:15,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 136 transitions, 565 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 19:59:15,312 INFO L231 Difference]: Finished difference. Result has 46 places, 49 transitions, 171 flow [2023-01-27 19:59:15,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=171, PETRI_PLACES=46, PETRI_TRANSITIONS=49} [2023-01-27 19:59:15,316 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 8 predicate places. [2023-01-27 19:59:15,316 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 49 transitions, 171 flow [2023-01-27 19:59:15,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 236.44444444444446) internal successors, (2128), 9 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:15,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:15,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:59:15,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 19:59:15,318 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:59:15,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:15,318 INFO L85 PathProgramCache]: Analyzing trace with hash 606335977, now seen corresponding path program 2 times [2023-01-27 19:59:15,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:15,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302044014] [2023-01-27 19:59:15,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:15,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:15,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:15,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:15,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302044014] [2023-01-27 19:59:15,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302044014] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:59:15,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:59:15,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 19:59:15,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345699709] [2023-01-27 19:59:15,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:59:15,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 19:59:15,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:15,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 19:59:15,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-27 19:59:15,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 677 [2023-01-27 19:59:15,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 49 transitions, 171 flow. Second operand has 9 states, 9 states have (on average 236.44444444444446) internal successors, (2128), 9 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:15,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:15,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 677 [2023-01-27 19:59:15,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:16,472 INFO L130 PetriNetUnfolder]: 2067/2969 cut-off events. [2023-01-27 19:59:16,473 INFO L131 PetriNetUnfolder]: For 672/672 co-relation queries the response was YES. [2023-01-27 19:59:16,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6719 conditions, 2969 events. 2067/2969 cut-off events. For 672/672 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 12863 event pairs, 168 based on Foata normal form. 1/2438 useless extension candidates. Maximal degree in co-relation 6694. Up to 1149 conditions per place. [2023-01-27 19:59:16,485 INFO L137 encePairwiseOnDemand]: 666/677 looper letters, 112 selfloop transitions, 16 changer transitions 8/136 dead transitions. [2023-01-27 19:59:16,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 136 transitions, 643 flow [2023-01-27 19:59:16,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 19:59:16,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 19:59:16,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2476 transitions. [2023-01-27 19:59:16,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3657311669128508 [2023-01-27 19:59:16,490 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2476 transitions. [2023-01-27 19:59:16,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2476 transitions. [2023-01-27 19:59:16,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:16,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2476 transitions. [2023-01-27 19:59:16,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:16,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:16,504 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:16,504 INFO L175 Difference]: Start difference. First operand has 46 places, 49 transitions, 171 flow. Second operand 10 states and 2476 transitions. [2023-01-27 19:59:16,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 136 transitions, 643 flow [2023-01-27 19:59:16,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 136 transitions, 637 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-01-27 19:59:16,511 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 223 flow [2023-01-27 19:59:16,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=223, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2023-01-27 19:59:16,512 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2023-01-27 19:59:16,512 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 223 flow [2023-01-27 19:59:16,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 236.44444444444446) internal successors, (2128), 9 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:16,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:16,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:59:16,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 19:59:16,514 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:59:16,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:16,516 INFO L85 PathProgramCache]: Analyzing trace with hash 235386122, now seen corresponding path program 1 times [2023-01-27 19:59:16,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:16,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112313105] [2023-01-27 19:59:16,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:16,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:16,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:16,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112313105] [2023-01-27 19:59:16,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112313105] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:16,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5340155] [2023-01-27 19:59:16,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:16,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:16,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:59:16,930 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) [2023-01-27 19:59:16,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 19:59:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:17,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 22 conjunts are in the unsatisfiable core [2023-01-27 19:59:17,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:59:17,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:17,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:59:17,635 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:59:17,636 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 185 treesize of output 165 [2023-01-27 19:59:17,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:17,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5340155] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:17,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:59:17,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 19 [2023-01-27 19:59:17,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101565650] [2023-01-27 19:59:17,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:59:17,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 19:59:17,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:17,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 19:59:17,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2023-01-27 19:59:17,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 677 [2023-01-27 19:59:17,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 223 flow. Second operand has 9 states, 9 states have (on average 236.55555555555554) internal successors, (2129), 9 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:17,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:17,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 677 [2023-01-27 19:59:17,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:18,794 INFO L130 PetriNetUnfolder]: 3352/4807 cut-off events. [2023-01-27 19:59:18,794 INFO L131 PetriNetUnfolder]: For 2315/2315 co-relation queries the response was YES. [2023-01-27 19:59:18,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11509 conditions, 4807 events. 3352/4807 cut-off events. For 2315/2315 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 22752 event pairs, 397 based on Foata normal form. 73/4028 useless extension candidates. Maximal degree in co-relation 9978. Up to 1658 conditions per place. [2023-01-27 19:59:18,819 INFO L137 encePairwiseOnDemand]: 665/677 looper letters, 163 selfloop transitions, 17 changer transitions 5/185 dead transitions. [2023-01-27 19:59:18,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 185 transitions, 930 flow [2023-01-27 19:59:18,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 19:59:18,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 19:59:18,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3226 transitions. [2023-01-27 19:59:18,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3665492557663902 [2023-01-27 19:59:18,829 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3226 transitions. [2023-01-27 19:59:18,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3226 transitions. [2023-01-27 19:59:18,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:18,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3226 transitions. [2023-01-27 19:59:18,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 248.15384615384616) internal successors, (3226), 13 states have internal predecessors, (3226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:18,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 677.0) internal successors, (9478), 14 states have internal predecessors, (9478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:18,852 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 677.0) internal successors, (9478), 14 states have internal predecessors, (9478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:18,852 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 223 flow. Second operand 13 states and 3226 transitions. [2023-01-27 19:59:18,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 185 transitions, 930 flow [2023-01-27 19:59:18,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 185 transitions, 909 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-01-27 19:59:18,871 INFO L231 Difference]: Finished difference. Result has 68 places, 59 transitions, 297 flow [2023-01-27 19:59:18,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=297, PETRI_PLACES=68, PETRI_TRANSITIONS=59} [2023-01-27 19:59:18,872 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 30 predicate places. [2023-01-27 19:59:18,872 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 297 flow [2023-01-27 19:59:18,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 236.55555555555554) internal successors, (2129), 9 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:18,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:18,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:59:18,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-27 19:59:19,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:19,081 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:59:19,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:19,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1647439045, now seen corresponding path program 1 times [2023-01-27 19:59:19,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:19,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945056460] [2023-01-27 19:59:19,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:19,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:19,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:19,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:19,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945056460] [2023-01-27 19:59:19,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945056460] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:19,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926009539] [2023-01-27 19:59:19,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:19,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:19,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:59:19,205 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) [2023-01-27 19:59:19,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 19:59:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:19,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 19:59:19,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:59:19,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:19,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:59:19,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:19,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926009539] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:19,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:59:19,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2023-01-27 19:59:19,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450676845] [2023-01-27 19:59:19,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:59:19,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 19:59:19,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:19,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 19:59:19,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-01-27 19:59:19,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 677 [2023-01-27 19:59:19,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 249.28571428571428) internal successors, (1745), 7 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:19,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:19,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 677 [2023-01-27 19:59:19,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:20,139 INFO L130 PetriNetUnfolder]: 5270/7512 cut-off events. [2023-01-27 19:59:20,140 INFO L131 PetriNetUnfolder]: For 6560/6560 co-relation queries the response was YES. [2023-01-27 19:59:20,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19545 conditions, 7512 events. 5270/7512 cut-off events. For 6560/6560 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 37182 event pairs, 3093 based on Foata normal form. 1/6217 useless extension candidates. Maximal degree in co-relation 18023. Up to 4796 conditions per place. [2023-01-27 19:59:20,182 INFO L137 encePairwiseOnDemand]: 668/677 looper letters, 134 selfloop transitions, 11 changer transitions 6/151 dead transitions. [2023-01-27 19:59:20,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 151 transitions, 924 flow [2023-01-27 19:59:20,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 19:59:20,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 19:59:20,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1847 transitions. [2023-01-27 19:59:20,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38974467187170286 [2023-01-27 19:59:20,186 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1847 transitions. [2023-01-27 19:59:20,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1847 transitions. [2023-01-27 19:59:20,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:20,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1847 transitions. [2023-01-27 19:59:20,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 263.85714285714283) internal successors, (1847), 7 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:20,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:20,194 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:20,194 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 297 flow. Second operand 7 states and 1847 transitions. [2023-01-27 19:59:20,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 151 transitions, 924 flow [2023-01-27 19:59:20,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 151 transitions, 873 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-01-27 19:59:20,228 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 330 flow [2023-01-27 19:59:20,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=330, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2023-01-27 19:59:20,229 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 34 predicate places. [2023-01-27 19:59:20,229 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 330 flow [2023-01-27 19:59:20,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 249.28571428571428) internal successors, (1745), 7 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:20,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:20,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:59:20,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 19:59:20,435 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,SelfDestructingSolverStorable3 [2023-01-27 19:59:20,435 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:59:20,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:20,436 INFO L85 PathProgramCache]: Analyzing trace with hash -2003328084, now seen corresponding path program 1 times [2023-01-27 19:59:20,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:20,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045648471] [2023-01-27 19:59:20,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:20,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:20,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:20,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045648471] [2023-01-27 19:59:20,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045648471] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:20,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078399916] [2023-01-27 19:59:20,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:20,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:20,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:59:20,559 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) [2023-01-27 19:59:20,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 19:59:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:20,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 19:59:20,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:59:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:20,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:59:20,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:20,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078399916] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:20,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:59:20,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 10 [2023-01-27 19:59:20,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788416375] [2023-01-27 19:59:20,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:59:20,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 19:59:20,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:20,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 19:59:20,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-01-27 19:59:20,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 677 [2023-01-27 19:59:20,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 249.83333333333334) internal successors, (1499), 6 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:20,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:20,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 677 [2023-01-27 19:59:20,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:21,473 INFO L130 PetriNetUnfolder]: 5428/7763 cut-off events. [2023-01-27 19:59:21,473 INFO L131 PetriNetUnfolder]: For 6141/6141 co-relation queries the response was YES. [2023-01-27 19:59:21,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20447 conditions, 7763 events. 5428/7763 cut-off events. For 6141/6141 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 38922 event pairs, 3239 based on Foata normal form. 1/6442 useless extension candidates. Maximal degree in co-relation 18869. Up to 4536 conditions per place. [2023-01-27 19:59:21,506 INFO L137 encePairwiseOnDemand]: 667/677 looper letters, 127 selfloop transitions, 11 changer transitions 7/145 dead transitions. [2023-01-27 19:59:21,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 145 transitions, 881 flow [2023-01-27 19:59:21,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 19:59:21,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 19:59:21,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1846 transitions. [2023-01-27 19:59:21,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38953365688963915 [2023-01-27 19:59:21,510 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1846 transitions. [2023-01-27 19:59:21,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1846 transitions. [2023-01-27 19:59:21,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:21,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1846 transitions. [2023-01-27 19:59:21,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 263.7142857142857) internal successors, (1846), 7 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:21,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:21,518 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:21,518 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 330 flow. Second operand 7 states and 1846 transitions. [2023-01-27 19:59:21,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 145 transitions, 881 flow [2023-01-27 19:59:21,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 145 transitions, 869 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-27 19:59:21,554 INFO L231 Difference]: Finished difference. Result has 79 places, 66 transitions, 359 flow [2023-01-27 19:59:21,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=359, PETRI_PLACES=79, PETRI_TRANSITIONS=66} [2023-01-27 19:59:21,555 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 41 predicate places. [2023-01-27 19:59:21,556 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 66 transitions, 359 flow [2023-01-27 19:59:21,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 249.83333333333334) internal successors, (1499), 6 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:21,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:21,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:59:21,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 19:59:21,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:21,770 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:59:21,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:21,771 INFO L85 PathProgramCache]: Analyzing trace with hash -105723106, now seen corresponding path program 2 times [2023-01-27 19:59:21,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:21,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137351432] [2023-01-27 19:59:21,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:21,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:22,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:22,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137351432] [2023-01-27 19:59:22,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137351432] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:22,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791723393] [2023-01-27 19:59:22,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 19:59:22,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:22,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:59:22,101 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) [2023-01-27 19:59:22,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 19:59:22,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-27 19:59:22,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:59:22,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-27 19:59:22,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:59:22,460 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:59:22,460 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 126 treesize of output 107 [2023-01-27 19:59:22,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 19:59:22,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 19:59:22,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791723393] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:59:22,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 19:59:22,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 15 [2023-01-27 19:59:22,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884085663] [2023-01-27 19:59:22,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:59:22,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 19:59:22,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:22,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 19:59:22,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-01-27 19:59:22,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 677 [2023-01-27 19:59:22,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 66 transitions, 359 flow. Second operand has 9 states, 9 states have (on average 233.55555555555554) internal successors, (2102), 9 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:22,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:22,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 677 [2023-01-27 19:59:22,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:23,769 INFO L130 PetriNetUnfolder]: 7122/10386 cut-off events. [2023-01-27 19:59:23,770 INFO L131 PetriNetUnfolder]: For 9452/9452 co-relation queries the response was YES. [2023-01-27 19:59:23,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27410 conditions, 10386 events. 7122/10386 cut-off events. For 9452/9452 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 57636 event pairs, 1750 based on Foata normal form. 89/8681 useless extension candidates. Maximal degree in co-relation 24358. Up to 4154 conditions per place. [2023-01-27 19:59:23,811 INFO L137 encePairwiseOnDemand]: 664/677 looper letters, 229 selfloop transitions, 35 changer transitions 11/275 dead transitions. [2023-01-27 19:59:23,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 275 transitions, 1632 flow [2023-01-27 19:59:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-27 19:59:23,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-27 19:59:23,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3714 transitions. [2023-01-27 19:59:23,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3657311669128508 [2023-01-27 19:59:23,818 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3714 transitions. [2023-01-27 19:59:23,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3714 transitions. [2023-01-27 19:59:23,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:23,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3714 transitions. [2023-01-27 19:59:23,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 247.6) internal successors, (3714), 15 states have internal predecessors, (3714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:23,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 677.0) internal successors, (10832), 16 states have internal predecessors, (10832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:23,832 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 677.0) internal successors, (10832), 16 states have internal predecessors, (10832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:23,832 INFO L175 Difference]: Start difference. First operand has 79 places, 66 transitions, 359 flow. Second operand 15 states and 3714 transitions. [2023-01-27 19:59:23,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 275 transitions, 1632 flow [2023-01-27 19:59:23,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 275 transitions, 1616 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-27 19:59:23,867 INFO L231 Difference]: Finished difference. Result has 100 places, 95 transitions, 692 flow [2023-01-27 19:59:23,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=692, PETRI_PLACES=100, PETRI_TRANSITIONS=95} [2023-01-27 19:59:23,868 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 62 predicate places. [2023-01-27 19:59:23,868 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 95 transitions, 692 flow [2023-01-27 19:59:23,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 233.55555555555554) internal successors, (2102), 9 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:23,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:23,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:59:23,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 19:59:24,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:24,074 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:59:24,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:24,074 INFO L85 PathProgramCache]: Analyzing trace with hash -964485474, now seen corresponding path program 3 times [2023-01-27 19:59:24,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:24,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547955367] [2023-01-27 19:59:24,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:24,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:24,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:24,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:24,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547955367] [2023-01-27 19:59:24,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547955367] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:24,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584793639] [2023-01-27 19:59:24,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 19:59:24,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:24,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:59:24,414 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) [2023-01-27 19:59:24,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 19:59:24,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-27 19:59:24,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:59:24,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-27 19:59:24,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:59:24,712 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:59:24,712 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 126 treesize of output 107 [2023-01-27 19:59:24,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 19:59:24,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 19:59:24,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584793639] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:59:24,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 19:59:24,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 15 [2023-01-27 19:59:24,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136348688] [2023-01-27 19:59:24,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:59:24,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 19:59:24,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:24,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 19:59:24,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-01-27 19:59:24,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 677 [2023-01-27 19:59:24,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 95 transitions, 692 flow. Second operand has 9 states, 9 states have (on average 233.55555555555554) internal successors, (2102), 9 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:24,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:24,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 677 [2023-01-27 19:59:24,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:26,216 INFO L130 PetriNetUnfolder]: 7540/11054 cut-off events. [2023-01-27 19:59:26,216 INFO L131 PetriNetUnfolder]: For 19752/19752 co-relation queries the response was YES. [2023-01-27 19:59:26,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31460 conditions, 11054 events. 7540/11054 cut-off events. For 19752/19752 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 62045 event pairs, 1762 based on Foata normal form. 197/9281 useless extension candidates. Maximal degree in co-relation 29815. Up to 4154 conditions per place. [2023-01-27 19:59:26,274 INFO L137 encePairwiseOnDemand]: 664/677 looper letters, 212 selfloop transitions, 43 changer transitions 15/270 dead transitions. [2023-01-27 19:59:26,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 270 transitions, 1755 flow [2023-01-27 19:59:26,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-27 19:59:26,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-27 19:59:26,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3710 transitions. [2023-01-27 19:59:26,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36533727227966517 [2023-01-27 19:59:26,280 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3710 transitions. [2023-01-27 19:59:26,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3710 transitions. [2023-01-27 19:59:26,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:26,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3710 transitions. [2023-01-27 19:59:26,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 247.33333333333334) internal successors, (3710), 15 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:26,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 677.0) internal successors, (10832), 16 states have internal predecessors, (10832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:26,294 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 677.0) internal successors, (10832), 16 states have internal predecessors, (10832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:26,294 INFO L175 Difference]: Start difference. First operand has 100 places, 95 transitions, 692 flow. Second operand 15 states and 3710 transitions. [2023-01-27 19:59:26,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 270 transitions, 1755 flow [2023-01-27 19:59:26,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 270 transitions, 1705 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-01-27 19:59:26,372 INFO L231 Difference]: Finished difference. Result has 118 places, 103 transitions, 869 flow [2023-01-27 19:59:26,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=869, PETRI_PLACES=118, PETRI_TRANSITIONS=103} [2023-01-27 19:59:26,373 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 80 predicate places. [2023-01-27 19:59:26,373 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 103 transitions, 869 flow [2023-01-27 19:59:26,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 233.55555555555554) internal successors, (2102), 9 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:26,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:26,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:59:26,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 19:59:26,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:26,578 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:59:26,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:26,579 INFO L85 PathProgramCache]: Analyzing trace with hash 927259102, now seen corresponding path program 4 times [2023-01-27 19:59:26,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:26,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249118193] [2023-01-27 19:59:26,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:26,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:27,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:27,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:27,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249118193] [2023-01-27 19:59:27,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249118193] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:27,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586273013] [2023-01-27 19:59:27,091 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 19:59:27,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:27,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:59:27,092 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) [2023-01-27 19:59:27,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 19:59:27,179 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 19:59:27,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:59:27,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 19 conjunts are in the unsatisfiable core [2023-01-27 19:59:27,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:59:27,417 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:59:27,418 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 137 treesize of output 134 [2023-01-27 19:59:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:27,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:59:28,256 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:59:28,257 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 185 treesize of output 165 [2023-01-27 19:59:28,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:28,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586273013] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:28,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:59:28,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 22 [2023-01-27 19:59:28,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905915596] [2023-01-27 19:59:28,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:59:28,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 19:59:28,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:28,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 19:59:28,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2023-01-27 19:59:28,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 677 [2023-01-27 19:59:28,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 103 transitions, 869 flow. Second operand has 9 states, 9 states have (on average 226.55555555555554) internal successors, (2039), 9 states have internal predecessors, (2039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:28,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:28,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 677 [2023-01-27 19:59:28,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:31,297 INFO L130 PetriNetUnfolder]: 18154/26002 cut-off events. [2023-01-27 19:59:31,298 INFO L131 PetriNetUnfolder]: For 80076/80076 co-relation queries the response was YES. [2023-01-27 19:59:31,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81060 conditions, 26002 events. 18154/26002 cut-off events. For 80076/80076 co-relation queries the response was YES. Maximal size of possible extension queue 1169. Compared 160797 event pairs, 1836 based on Foata normal form. 2/21398 useless extension candidates. Maximal degree in co-relation 78458. Up to 8287 conditions per place. [2023-01-27 19:59:31,463 INFO L137 encePairwiseOnDemand]: 664/677 looper letters, 221 selfloop transitions, 120 changer transitions 1/342 dead transitions. [2023-01-27 19:59:31,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 342 transitions, 2871 flow [2023-01-27 19:59:31,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 19:59:31,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 19:59:31,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3344 transitions. [2023-01-27 19:59:31,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35281705001055075 [2023-01-27 19:59:31,470 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3344 transitions. [2023-01-27 19:59:31,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3344 transitions. [2023-01-27 19:59:31,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:31,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3344 transitions. [2023-01-27 19:59:31,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 238.85714285714286) internal successors, (3344), 14 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:31,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 677.0) internal successors, (10155), 15 states have internal predecessors, (10155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:31,483 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 677.0) internal successors, (10155), 15 states have internal predecessors, (10155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:31,483 INFO L175 Difference]: Start difference. First operand has 118 places, 103 transitions, 869 flow. Second operand 14 states and 3344 transitions. [2023-01-27 19:59:31,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 342 transitions, 2871 flow [2023-01-27 19:59:32,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 342 transitions, 2738 flow, removed 35 selfloop flow, removed 8 redundant places. [2023-01-27 19:59:32,216 INFO L231 Difference]: Finished difference. Result has 131 places, 211 transitions, 2108 flow [2023-01-27 19:59:32,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2108, PETRI_PLACES=131, PETRI_TRANSITIONS=211} [2023-01-27 19:59:32,217 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 93 predicate places. [2023-01-27 19:59:32,217 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 211 transitions, 2108 flow [2023-01-27 19:59:32,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 226.55555555555554) internal successors, (2039), 9 states have internal predecessors, (2039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:32,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:32,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:59:32,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-01-27 19:59:32,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:32,423 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:59:32,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:32,423 INFO L85 PathProgramCache]: Analyzing trace with hash 158436876, now seen corresponding path program 5 times [2023-01-27 19:59:32,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:32,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907120726] [2023-01-27 19:59:32,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:32,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:32,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:32,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:32,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907120726] [2023-01-27 19:59:32,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907120726] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:32,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207264090] [2023-01-27 19:59:32,723 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 19:59:32,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:32,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:59:32,724 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) [2023-01-27 19:59:32,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 19:59:32,910 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 19:59:32,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:59:32,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-27 19:59:32,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:59:33,235 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:59:33,235 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 160 treesize of output 141 [2023-01-27 19:59:33,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:33,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:59:33,738 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:59:33,738 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 185 treesize of output 165 [2023-01-27 19:59:33,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:33,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207264090] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:33,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:59:33,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 19 [2023-01-27 19:59:33,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451813196] [2023-01-27 19:59:33,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:59:33,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 19:59:33,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:33,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 19:59:33,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-01-27 19:59:33,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 677 [2023-01-27 19:59:33,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 211 transitions, 2108 flow. Second operand has 9 states, 9 states have (on average 236.55555555555554) internal successors, (2129), 9 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:33,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:33,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 677 [2023-01-27 19:59:33,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:36,932 INFO L130 PetriNetUnfolder]: 18154/25999 cut-off events. [2023-01-27 19:59:36,932 INFO L131 PetriNetUnfolder]: For 97010/97010 co-relation queries the response was YES. [2023-01-27 19:59:37,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98170 conditions, 25999 events. 18154/25999 cut-off events. For 97010/97010 co-relation queries the response was YES. Maximal size of possible extension queue 1168. Compared 160461 event pairs, 3176 based on Foata normal form. 3/23918 useless extension candidates. Maximal degree in co-relation 96574. Up to 14851 conditions per place. [2023-01-27 19:59:37,142 INFO L137 encePairwiseOnDemand]: 666/677 looper letters, 298 selfloop transitions, 42 changer transitions 10/350 dead transitions. [2023-01-27 19:59:37,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 350 transitions, 3372 flow [2023-01-27 19:59:37,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 19:59:37,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 19:59:37,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3223 transitions. [2023-01-27 19:59:37,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3662083854107488 [2023-01-27 19:59:37,147 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3223 transitions. [2023-01-27 19:59:37,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3223 transitions. [2023-01-27 19:59:37,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:37,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3223 transitions. [2023-01-27 19:59:37,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 247.92307692307693) internal successors, (3223), 13 states have internal predecessors, (3223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:37,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 677.0) internal successors, (9478), 14 states have internal predecessors, (9478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:37,159 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 677.0) internal successors, (9478), 14 states have internal predecessors, (9478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:37,159 INFO L175 Difference]: Start difference. First operand has 131 places, 211 transitions, 2108 flow. Second operand 13 states and 3223 transitions. [2023-01-27 19:59:37,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 350 transitions, 3372 flow [2023-01-27 19:59:38,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 350 transitions, 3315 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-01-27 19:59:38,180 INFO L231 Difference]: Finished difference. Result has 142 places, 210 transitions, 2136 flow [2023-01-27 19:59:38,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=2053, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2136, PETRI_PLACES=142, PETRI_TRANSITIONS=210} [2023-01-27 19:59:38,181 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 104 predicate places. [2023-01-27 19:59:38,181 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 210 transitions, 2136 flow [2023-01-27 19:59:38,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 236.55555555555554) internal successors, (2129), 9 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:38,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:38,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:59:38,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-27 19:59:38,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:38,382 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:59:38,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:38,383 INFO L85 PathProgramCache]: Analyzing trace with hash -671402008, now seen corresponding path program 1 times [2023-01-27 19:59:38,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:38,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174953271] [2023-01-27 19:59:38,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:38,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 19:59:38,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:38,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174953271] [2023-01-27 19:59:38,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174953271] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:38,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107490349] [2023-01-27 19:59:38,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:38,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:38,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:59:38,485 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) [2023-01-27 19:59:38,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 19:59:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:38,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 19:59:38,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:59:38,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:38,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:59:38,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:38,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107490349] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:38,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:59:38,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 6] total 12 [2023-01-27 19:59:38,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692160716] [2023-01-27 19:59:38,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:59:38,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 19:59:38,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:38,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 19:59:38,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-01-27 19:59:38,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 677 [2023-01-27 19:59:38,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 210 transitions, 2136 flow. Second operand has 7 states, 7 states have (on average 245.42857142857142) internal successors, (1718), 7 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:38,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:38,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 677 [2023-01-27 19:59:38,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:42,071 INFO L130 PetriNetUnfolder]: 19128/27437 cut-off events. [2023-01-27 19:59:42,071 INFO L131 PetriNetUnfolder]: For 109142/109142 co-relation queries the response was YES. [2023-01-27 19:59:42,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102922 conditions, 27437 events. 19128/27437 cut-off events. For 109142/109142 co-relation queries the response was YES. Maximal size of possible extension queue 1203. Compared 173177 event pairs, 4872 based on Foata normal form. 0/25353 useless extension candidates. Maximal degree in co-relation 101271. Up to 8897 conditions per place. [2023-01-27 19:59:42,279 INFO L137 encePairwiseOnDemand]: 667/677 looper letters, 486 selfloop transitions, 24 changer transitions 6/516 dead transitions. [2023-01-27 19:59:42,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 516 transitions, 5474 flow [2023-01-27 19:59:42,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 19:59:42,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 19:59:42,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2588 transitions. [2023-01-27 19:59:42,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.382274741506647 [2023-01-27 19:59:42,283 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2588 transitions. [2023-01-27 19:59:42,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2588 transitions. [2023-01-27 19:59:42,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:42,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2588 transitions. [2023-01-27 19:59:42,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 258.8) internal successors, (2588), 10 states have internal predecessors, (2588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:42,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:42,290 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:42,290 INFO L175 Difference]: Start difference. First operand has 142 places, 210 transitions, 2136 flow. Second operand 10 states and 2588 transitions. [2023-01-27 19:59:42,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 516 transitions, 5474 flow [2023-01-27 19:59:42,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 516 transitions, 5344 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-01-27 19:59:42,878 INFO L231 Difference]: Finished difference. Result has 144 places, 216 transitions, 2157 flow [2023-01-27 19:59:42,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=2068, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2157, PETRI_PLACES=144, PETRI_TRANSITIONS=216} [2023-01-27 19:59:42,879 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 106 predicate places. [2023-01-27 19:59:42,879 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 216 transitions, 2157 flow [2023-01-27 19:59:42,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 245.42857142857142) internal successors, (1718), 7 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:42,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:42,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:59:42,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-27 19:59:43,080 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,SelfDestructingSolverStorable9 [2023-01-27 19:59:43,080 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:59:43,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:43,081 INFO L85 PathProgramCache]: Analyzing trace with hash -143631792, now seen corresponding path program 1 times [2023-01-27 19:59:43,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:43,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965444147] [2023-01-27 19:59:43,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:43,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:43,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:43,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:43,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965444147] [2023-01-27 19:59:43,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965444147] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:59:43,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:59:43,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 19:59:43,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706680381] [2023-01-27 19:59:43,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:59:43,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 19:59:43,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:43,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 19:59:43,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 19:59:43,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 677 [2023-01-27 19:59:43,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 216 transitions, 2157 flow. Second operand has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:43,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:43,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 677 [2023-01-27 19:59:43,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:45,100 INFO L130 PetriNetUnfolder]: 10902/15866 cut-off events. [2023-01-27 19:59:45,100 INFO L131 PetriNetUnfolder]: For 66763/66763 co-relation queries the response was YES. [2023-01-27 19:59:45,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62778 conditions, 15866 events. 10902/15866 cut-off events. For 66763/66763 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 92217 event pairs, 4879 based on Foata normal form. 572/16438 useless extension candidates. Maximal degree in co-relation 62201. Up to 11427 conditions per place. [2023-01-27 19:59:45,182 INFO L137 encePairwiseOnDemand]: 669/677 looper letters, 196 selfloop transitions, 13 changer transitions 54/263 dead transitions. [2023-01-27 19:59:45,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 263 transitions, 2636 flow [2023-01-27 19:59:45,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 19:59:45,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 19:59:45,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1862 transitions. [2023-01-27 19:59:45,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3929098966026588 [2023-01-27 19:59:45,185 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1862 transitions. [2023-01-27 19:59:45,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1862 transitions. [2023-01-27 19:59:45,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:45,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1862 transitions. [2023-01-27 19:59:45,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 266.0) internal successors, (1862), 7 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:45,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:45,191 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:45,191 INFO L175 Difference]: Start difference. First operand has 144 places, 216 transitions, 2157 flow. Second operand 7 states and 1862 transitions. [2023-01-27 19:59:45,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 263 transitions, 2636 flow [2023-01-27 19:59:45,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 263 transitions, 2398 flow, removed 71 selfloop flow, removed 11 redundant places. [2023-01-27 19:59:45,462 INFO L231 Difference]: Finished difference. Result has 143 places, 131 transitions, 1030 flow [2023-01-27 19:59:45,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1030, PETRI_PLACES=143, PETRI_TRANSITIONS=131} [2023-01-27 19:59:45,463 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 105 predicate places. [2023-01-27 19:59:45,463 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 131 transitions, 1030 flow [2023-01-27 19:59:45,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:45,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:45,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:59:45,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 19:59:45,464 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:59:45,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:45,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1576177570, now seen corresponding path program 1 times [2023-01-27 19:59:45,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:45,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776926861] [2023-01-27 19:59:45,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:45,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:45,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 19:59:45,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:45,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776926861] [2023-01-27 19:59:45,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776926861] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:59:45,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:59:45,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 19:59:45,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9271438] [2023-01-27 19:59:45,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:59:45,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 19:59:45,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:45,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 19:59:45,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 19:59:45,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 677 [2023-01-27 19:59:45,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 131 transitions, 1030 flow. Second operand has 5 states, 5 states have (on average 253.2) internal successors, (1266), 5 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:45,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:45,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 677 [2023-01-27 19:59:45,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:46,689 INFO L130 PetriNetUnfolder]: 6934/9959 cut-off events. [2023-01-27 19:59:46,690 INFO L131 PetriNetUnfolder]: For 42926/42926 co-relation queries the response was YES. [2023-01-27 19:59:46,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40103 conditions, 9959 events. 6934/9959 cut-off events. For 42926/42926 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 51881 event pairs, 3324 based on Foata normal form. 192/10151 useless extension candidates. Maximal degree in co-relation 40054. Up to 7795 conditions per place. [2023-01-27 19:59:46,744 INFO L137 encePairwiseOnDemand]: 671/677 looper letters, 106 selfloop transitions, 4 changer transitions 126/236 dead transitions. [2023-01-27 19:59:46,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 236 transitions, 2116 flow [2023-01-27 19:59:46,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 19:59:46,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 19:59:46,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1856 transitions. [2023-01-27 19:59:46,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39164380671027643 [2023-01-27 19:59:46,746 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1856 transitions. [2023-01-27 19:59:46,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1856 transitions. [2023-01-27 19:59:46,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:46,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1856 transitions. [2023-01-27 19:59:46,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 265.14285714285717) internal successors, (1856), 7 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:46,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:46,751 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:46,751 INFO L175 Difference]: Start difference. First operand has 143 places, 131 transitions, 1030 flow. Second operand 7 states and 1856 transitions. [2023-01-27 19:59:46,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 236 transitions, 2116 flow [2023-01-27 19:59:47,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 236 transitions, 1895 flow, removed 83 selfloop flow, removed 19 redundant places. [2023-01-27 19:59:47,316 INFO L231 Difference]: Finished difference. Result has 103 places, 110 transitions, 742 flow [2023-01-27 19:59:47,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=742, PETRI_PLACES=103, PETRI_TRANSITIONS=110} [2023-01-27 19:59:47,316 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 65 predicate places. [2023-01-27 19:59:47,316 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 110 transitions, 742 flow [2023-01-27 19:59:47,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 253.2) internal successors, (1266), 5 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:47,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:47,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:59:47,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 19:59:47,317 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:59:47,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:47,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1200551145, now seen corresponding path program 1 times [2023-01-27 19:59:47,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:47,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800237146] [2023-01-27 19:59:47,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:47,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:47,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 19:59:47,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:47,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800237146] [2023-01-27 19:59:47,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800237146] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:59:47,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:59:47,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 19:59:47,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579850222] [2023-01-27 19:59:47,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:59:47,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 19:59:47,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:47,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 19:59:47,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 19:59:47,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 677 [2023-01-27 19:59:47,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 110 transitions, 742 flow. Second operand has 5 states, 5 states have (on average 253.2) internal successors, (1266), 5 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:47,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:47,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 677 [2023-01-27 19:59:47,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:47,989 INFO L130 PetriNetUnfolder]: 4761/6778 cut-off events. [2023-01-27 19:59:47,989 INFO L131 PetriNetUnfolder]: For 10582/10582 co-relation queries the response was YES. [2023-01-27 19:59:48,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22541 conditions, 6778 events. 4761/6778 cut-off events. For 10582/10582 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 32066 event pairs, 2380 based on Foata normal form. 72/6850 useless extension candidates. Maximal degree in co-relation 22505. Up to 6062 conditions per place. [2023-01-27 19:59:48,034 INFO L137 encePairwiseOnDemand]: 669/677 looper letters, 83 selfloop transitions, 2 changer transitions 80/165 dead transitions. [2023-01-27 19:59:48,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 165 transitions, 1272 flow [2023-01-27 19:59:48,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 19:59:48,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 19:59:48,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1839 transitions. [2023-01-27 19:59:48,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38805655201519307 [2023-01-27 19:59:48,038 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1839 transitions. [2023-01-27 19:59:48,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1839 transitions. [2023-01-27 19:59:48,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:48,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1839 transitions. [2023-01-27 19:59:48,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 262.7142857142857) internal successors, (1839), 7 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:48,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:48,045 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:48,045 INFO L175 Difference]: Start difference. First operand has 103 places, 110 transitions, 742 flow. Second operand 7 states and 1839 transitions. [2023-01-27 19:59:48,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 165 transitions, 1272 flow [2023-01-27 19:59:48,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 165 transitions, 1241 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-01-27 19:59:48,074 INFO L231 Difference]: Finished difference. Result has 96 places, 85 transitions, 497 flow [2023-01-27 19:59:48,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=497, PETRI_PLACES=96, PETRI_TRANSITIONS=85} [2023-01-27 19:59:48,075 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 58 predicate places. [2023-01-27 19:59:48,075 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 85 transitions, 497 flow [2023-01-27 19:59:48,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 253.2) internal successors, (1266), 5 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:48,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:48,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:59:48,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-27 19:59:48,076 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:59:48,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:48,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1872973148, now seen corresponding path program 1 times [2023-01-27 19:59:48,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:48,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116171401] [2023-01-27 19:59:48,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:48,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:48,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 19:59:48,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:48,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116171401] [2023-01-27 19:59:48,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116171401] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:48,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371776809] [2023-01-27 19:59:48,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:48,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:48,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:59:48,376 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) [2023-01-27 19:59:48,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-27 19:59:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:48,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-27 19:59:48,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:59:48,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:48,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:59:48,974 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:59:48,975 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 185 treesize of output 165 [2023-01-27 19:59:49,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:49,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371776809] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:59:49,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 19:59:49,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2023-01-27 19:59:49,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553456690] [2023-01-27 19:59:49,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 19:59:49,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-27 19:59:49,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:49,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-27 19:59:49,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2023-01-27 19:59:49,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 677 [2023-01-27 19:59:49,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 85 transitions, 497 flow. Second operand has 28 states, 28 states have (on average 233.78571428571428) internal successors, (6546), 28 states have internal predecessors, (6546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:49,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:49,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 677 [2023-01-27 19:59:49,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:51,793 INFO L130 PetriNetUnfolder]: 10737/15267 cut-off events. [2023-01-27 19:59:51,793 INFO L131 PetriNetUnfolder]: For 21825/21825 co-relation queries the response was YES. [2023-01-27 19:59:51,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49510 conditions, 15267 events. 10737/15267 cut-off events. For 21825/21825 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 84455 event pairs, 1064 based on Foata normal form. 447/15714 useless extension candidates. Maximal degree in co-relation 49477. Up to 3520 conditions per place. [2023-01-27 19:59:51,893 INFO L137 encePairwiseOnDemand]: 663/677 looper letters, 393 selfloop transitions, 93 changer transitions 20/506 dead transitions. [2023-01-27 19:59:51,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 506 transitions, 3365 flow [2023-01-27 19:59:51,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-01-27 19:59:51,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-01-27 19:59:51,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 7566 transitions. [2023-01-27 19:59:51,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36050888645351886 [2023-01-27 19:59:51,899 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 7566 transitions. [2023-01-27 19:59:51,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 7566 transitions. [2023-01-27 19:59:51,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:51,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 7566 transitions. [2023-01-27 19:59:51,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 244.06451612903226) internal successors, (7566), 31 states have internal predecessors, (7566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:51,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 677.0) internal successors, (21664), 32 states have internal predecessors, (21664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:51,916 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 677.0) internal successors, (21664), 32 states have internal predecessors, (21664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:51,916 INFO L175 Difference]: Start difference. First operand has 96 places, 85 transitions, 497 flow. Second operand 31 states and 7566 transitions. [2023-01-27 19:59:51,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 506 transitions, 3365 flow [2023-01-27 19:59:52,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 506 transitions, 3237 flow, removed 57 selfloop flow, removed 12 redundant places. [2023-01-27 19:59:52,065 INFO L231 Difference]: Finished difference. Result has 116 places, 160 transitions, 1324 flow [2023-01-27 19:59:52,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1324, PETRI_PLACES=116, PETRI_TRANSITIONS=160} [2023-01-27 19:59:52,066 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 78 predicate places. [2023-01-27 19:59:52,066 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 160 transitions, 1324 flow [2023-01-27 19:59:52,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 233.78571428571428) internal successors, (6546), 28 states have internal predecessors, (6546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:52,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:52,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:59:52,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-27 19:59:52,271 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,SelfDestructingSolverStorable13 [2023-01-27 19:59:52,271 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:59:52,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:52,271 INFO L85 PathProgramCache]: Analyzing trace with hash 691585832, now seen corresponding path program 2 times [2023-01-27 19:59:52,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:52,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070985434] [2023-01-27 19:59:52,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:52,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:59:52,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:52,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070985434] [2023-01-27 19:59:52,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070985434] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:52,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482981797] [2023-01-27 19:59:52,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 19:59:52,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:52,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:59:52,584 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) [2023-01-27 19:59:52,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-27 19:59:52,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-27 19:59:52,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:59:52,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 22 conjunts are in the unsatisfiable core [2023-01-27 19:59:52,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:59:52,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 19:59:52,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 19:59:52,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482981797] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:59:52,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 19:59:52,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 15 [2023-01-27 19:59:52,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203778380] [2023-01-27 19:59:52,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:59:52,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 19:59:52,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:52,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 19:59:52,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-01-27 19:59:52,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 677 [2023-01-27 19:59:52,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 160 transitions, 1324 flow. Second operand has 9 states, 9 states have (on average 233.88888888888889) internal successors, (2105), 9 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:52,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:52,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 677 [2023-01-27 19:59:52,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:54,655 INFO L130 PetriNetUnfolder]: 12239/17496 cut-off events. [2023-01-27 19:59:54,656 INFO L131 PetriNetUnfolder]: For 57955/57955 co-relation queries the response was YES. [2023-01-27 19:59:54,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64748 conditions, 17496 events. 12239/17496 cut-off events. For 57955/57955 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 100856 event pairs, 2508 based on Foata normal form. 206/17702 useless extension candidates. Maximal degree in co-relation 64710. Up to 7214 conditions per place. [2023-01-27 19:59:54,758 INFO L137 encePairwiseOnDemand]: 666/677 looper letters, 203 selfloop transitions, 63 changer transitions 4/270 dead transitions. [2023-01-27 19:59:54,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 270 transitions, 2410 flow [2023-01-27 19:59:54,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 19:59:54,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 19:59:54,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2457 transitions. [2023-01-27 19:59:54,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36292466765140324 [2023-01-27 19:59:54,760 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2457 transitions. [2023-01-27 19:59:54,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2457 transitions. [2023-01-27 19:59:54,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:54,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2457 transitions. [2023-01-27 19:59:54,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 245.7) internal successors, (2457), 10 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:54,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:54,766 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:54,766 INFO L175 Difference]: Start difference. First operand has 116 places, 160 transitions, 1324 flow. Second operand 10 states and 2457 transitions. [2023-01-27 19:59:54,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 270 transitions, 2410 flow [2023-01-27 19:59:55,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 270 transitions, 2307 flow, removed 41 selfloop flow, removed 5 redundant places. [2023-01-27 19:59:55,102 INFO L231 Difference]: Finished difference. Result has 123 places, 175 transitions, 1578 flow [2023-01-27 19:59:55,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1578, PETRI_PLACES=123, PETRI_TRANSITIONS=175} [2023-01-27 19:59:55,103 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 85 predicate places. [2023-01-27 19:59:55,103 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 175 transitions, 1578 flow [2023-01-27 19:59:55,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 233.88888888888889) internal successors, (2105), 9 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:55,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:55,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:59:55,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-27 19:59:55,307 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,SelfDestructingSolverStorable14 [2023-01-27 19:59:55,308 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:59:55,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:55,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1361462932, now seen corresponding path program 3 times [2023-01-27 19:59:55,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:55,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461064863] [2023-01-27 19:59:55,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:55,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:55,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 19:59:55,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:55,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461064863] [2023-01-27 19:59:55,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461064863] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:55,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683229241] [2023-01-27 19:59:55,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 19:59:55,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:55,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:59:55,790 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) [2023-01-27 19:59:55,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-27 19:59:55,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-27 19:59:55,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:59:55,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 22 conjunts are in the unsatisfiable core [2023-01-27 19:59:55,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:59:56,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 19:59:56,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 19:59:56,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683229241] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:59:56,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 19:59:56,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 16 [2023-01-27 19:59:56,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418438951] [2023-01-27 19:59:56,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:59:56,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 19:59:56,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:56,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 19:59:56,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-01-27 19:59:56,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 677 [2023-01-27 19:59:56,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 175 transitions, 1578 flow. Second operand has 9 states, 9 states have (on average 233.88888888888889) internal successors, (2105), 9 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:56,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:56,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 677 [2023-01-27 19:59:56,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:57,854 INFO L130 PetriNetUnfolder]: 12635/18266 cut-off events. [2023-01-27 19:59:57,855 INFO L131 PetriNetUnfolder]: For 82008/82008 co-relation queries the response was YES. [2023-01-27 19:59:57,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67964 conditions, 18266 events. 12635/18266 cut-off events. For 82008/82008 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 108682 event pairs, 2664 based on Foata normal form. 550/18816 useless extension candidates. Maximal degree in co-relation 67924. Up to 7214 conditions per place. [2023-01-27 19:59:57,963 INFO L137 encePairwiseOnDemand]: 666/677 looper letters, 226 selfloop transitions, 62 changer transitions 5/293 dead transitions. [2023-01-27 19:59:57,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 293 transitions, 2880 flow [2023-01-27 19:59:57,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 19:59:57,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 19:59:57,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2455 transitions. [2023-01-27 19:59:57,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362629246676514 [2023-01-27 19:59:57,965 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2455 transitions. [2023-01-27 19:59:57,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2455 transitions. [2023-01-27 19:59:57,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:57,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2455 transitions. [2023-01-27 19:59:57,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 245.5) internal successors, (2455), 10 states have internal predecessors, (2455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:57,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:57,970 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:57,970 INFO L175 Difference]: Start difference. First operand has 123 places, 175 transitions, 1578 flow. Second operand 10 states and 2455 transitions. [2023-01-27 19:59:57,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 293 transitions, 2880 flow [2023-01-27 19:59:58,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 293 transitions, 2749 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-01-27 19:59:58,448 INFO L231 Difference]: Finished difference. Result has 130 places, 195 transitions, 1969 flow [2023-01-27 19:59:58,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=1487, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1969, PETRI_PLACES=130, PETRI_TRANSITIONS=195} [2023-01-27 19:59:58,448 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 92 predicate places. [2023-01-27 19:59:58,448 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 195 transitions, 1969 flow [2023-01-27 19:59:58,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 233.88888888888889) internal successors, (2105), 9 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:58,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:58,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:59:58,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-27 19:59:58,653 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,SelfDestructingSolverStorable15 [2023-01-27 19:59:58,653 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:59:58,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:58,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1069219752, now seen corresponding path program 4 times [2023-01-27 19:59:58,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:58,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035893343] [2023-01-27 19:59:58,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:58,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:58,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:59:58,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:58,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035893343] [2023-01-27 19:59:58,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035893343] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:58,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460010243] [2023-01-27 19:59:58,935 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 19:59:58,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:58,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:59:58,936 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) [2023-01-27 19:59:58,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-27 19:59:59,042 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 19:59:59,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:59:59,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-27 19:59:59,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:59:59,173 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:59:59,173 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 160 treesize of output 141 [2023-01-27 19:59:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:59:59,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:00:00,103 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:00:00,104 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 182 treesize of output 162 [2023-01-27 20:00:00,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:00:00,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460010243] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 20:00:00,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 20:00:00,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 21 [2023-01-27 20:00:00,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67865879] [2023-01-27 20:00:00,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:00:00,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:00:00,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:00:00,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:00:00,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2023-01-27 20:00:00,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 677 [2023-01-27 20:00:00,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 195 transitions, 1969 flow. Second operand has 8 states, 8 states have (on average 253.25) internal successors, (2026), 8 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:00,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:00:00,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 677 [2023-01-27 20:00:00,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:00:03,132 INFO L130 PetriNetUnfolder]: 15077/22280 cut-off events. [2023-01-27 20:00:03,132 INFO L131 PetriNetUnfolder]: For 109947/109947 co-relation queries the response was YES. [2023-01-27 20:00:03,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85603 conditions, 22280 events. 15077/22280 cut-off events. For 109947/109947 co-relation queries the response was YES. Maximal size of possible extension queue 1084. Compared 142753 event pairs, 592 based on Foata normal form. 2/22282 useless extension candidates. Maximal degree in co-relation 85560. Up to 8452 conditions per place. [2023-01-27 20:00:03,274 INFO L137 encePairwiseOnDemand]: 664/677 looper letters, 261 selfloop transitions, 187 changer transitions 1/449 dead transitions. [2023-01-27 20:00:03,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 449 transitions, 4776 flow [2023-01-27 20:00:03,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 20:00:03,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 20:00:03,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3454 transitions. [2023-01-27 20:00:03,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924554027951369 [2023-01-27 20:00:03,277 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3454 transitions. [2023-01-27 20:00:03,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3454 transitions. [2023-01-27 20:00:03,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:00:03,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3454 transitions. [2023-01-27 20:00:03,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 265.6923076923077) internal successors, (3454), 13 states have internal predecessors, (3454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:03,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 677.0) internal successors, (9478), 14 states have internal predecessors, (9478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:03,285 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 677.0) internal successors, (9478), 14 states have internal predecessors, (9478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:03,285 INFO L175 Difference]: Start difference. First operand has 130 places, 195 transitions, 1969 flow. Second operand 13 states and 3454 transitions. [2023-01-27 20:00:03,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 449 transitions, 4776 flow [2023-01-27 20:00:03,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 449 transitions, 4681 flow, removed 35 selfloop flow, removed 4 redundant places. [2023-01-27 20:00:04,000 INFO L231 Difference]: Finished difference. Result has 144 places, 296 transitions, 3466 flow [2023-01-27 20:00:04,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3466, PETRI_PLACES=144, PETRI_TRANSITIONS=296} [2023-01-27 20:00:04,001 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 106 predicate places. [2023-01-27 20:00:04,001 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 296 transitions, 3466 flow [2023-01-27 20:00:04,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 253.25) internal successors, (2026), 8 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:04,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:00:04,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:00:04,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-27 20:00:04,205 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,SelfDestructingSolverStorable16 [2023-01-27 20:00:04,206 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:00:04,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:00:04,206 INFO L85 PathProgramCache]: Analyzing trace with hash 755674220, now seen corresponding path program 5 times [2023-01-27 20:00:04,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:00:04,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70894507] [2023-01-27 20:00:04,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:00:04,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:00:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:00:04,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:00:04,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:00:04,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70894507] [2023-01-27 20:00:04,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70894507] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:00:04,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148696654] [2023-01-27 20:00:04,485 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:00:04,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:00:04,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:00:04,486 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) [2023-01-27 20:00:04,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-27 20:00:04,590 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:00:04,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:00:04,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 23 conjunts are in the unsatisfiable core [2023-01-27 20:00:04,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:00:04,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:00:04,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:00:05,258 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:00:05,259 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 185 treesize of output 165 [2023-01-27 20:00:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:00:05,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148696654] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 20:00:05,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 20:00:05,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 10] total 26 [2023-01-27 20:00:05,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239852920] [2023-01-27 20:00:05,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:00:05,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:00:05,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:00:05,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:00:05,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2023-01-27 20:00:05,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 677 [2023-01-27 20:00:05,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 296 transitions, 3466 flow. Second operand has 9 states, 9 states have (on average 229.88888888888889) internal successors, (2069), 9 states have internal predecessors, (2069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:05,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:00:05,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 677 [2023-01-27 20:00:05,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:00:08,803 INFO L130 PetriNetUnfolder]: 16719/25038 cut-off events. [2023-01-27 20:00:08,803 INFO L131 PetriNetUnfolder]: For 146334/146334 co-relation queries the response was YES. [2023-01-27 20:00:09,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108517 conditions, 25038 events. 16719/25038 cut-off events. For 146334/146334 co-relation queries the response was YES. Maximal size of possible extension queue 1211. Compared 165811 event pairs, 2106 based on Foata normal form. 4/25042 useless extension candidates. Maximal degree in co-relation 108468. Up to 7556 conditions per place. [2023-01-27 20:00:09,169 INFO L137 encePairwiseOnDemand]: 664/677 looper letters, 426 selfloop transitions, 161 changer transitions 3/590 dead transitions. [2023-01-27 20:00:09,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 590 transitions, 6874 flow [2023-01-27 20:00:09,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-27 20:00:09,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-27 20:00:09,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3878 transitions. [2023-01-27 20:00:09,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35801329394387 [2023-01-27 20:00:09,173 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3878 transitions. [2023-01-27 20:00:09,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3878 transitions. [2023-01-27 20:00:09,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:00:09,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3878 transitions. [2023-01-27 20:00:09,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 242.375) internal successors, (3878), 16 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:09,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 677.0) internal successors, (11509), 17 states have internal predecessors, (11509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:09,181 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 677.0) internal successors, (11509), 17 states have internal predecessors, (11509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:09,181 INFO L175 Difference]: Start difference. First operand has 144 places, 296 transitions, 3466 flow. Second operand 16 states and 3878 transitions. [2023-01-27 20:00:09,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 590 transitions, 6874 flow [2023-01-27 20:00:10,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 590 transitions, 6830 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-01-27 20:00:10,540 INFO L231 Difference]: Finished difference. Result has 164 places, 375 transitions, 4951 flow [2023-01-27 20:00:10,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=3430, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4951, PETRI_PLACES=164, PETRI_TRANSITIONS=375} [2023-01-27 20:00:10,540 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 126 predicate places. [2023-01-27 20:00:10,540 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 375 transitions, 4951 flow [2023-01-27 20:00:10,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 229.88888888888889) internal successors, (2069), 9 states have internal predecessors, (2069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:10,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:00:10,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:00:10,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-27 20:00:10,741 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,SelfDestructingSolverStorable17 [2023-01-27 20:00:10,741 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:00:10,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:00:10,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1054811520, now seen corresponding path program 6 times [2023-01-27 20:00:10,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:00:10,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886278797] [2023-01-27 20:00:10,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:00:10,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:00:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:00:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:00:11,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:00:11,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886278797] [2023-01-27 20:00:11,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886278797] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:00:11,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095241036] [2023-01-27 20:00:11,026 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:00:11,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:00:11,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:00:11,039 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) [2023-01-27 20:00:11,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-27 20:00:11,167 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-27 20:00:11,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:00:11,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 25 conjunts are in the unsatisfiable core [2023-01-27 20:00:11,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:00:11,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:00:11,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:00:11,779 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:00:11,780 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 185 treesize of output 165 [2023-01-27 20:00:11,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:00:11,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095241036] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:00:11,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:00:11,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 26 [2023-01-27 20:00:11,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008490185] [2023-01-27 20:00:11,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:00:11,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-27 20:00:11,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:00:11,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-27 20:00:11,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2023-01-27 20:00:11,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 677 [2023-01-27 20:00:11,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 375 transitions, 4951 flow. Second operand has 28 states, 28 states have (on average 233.78571428571428) internal successors, (6546), 28 states have internal predecessors, (6546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:11,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:00:11,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 677 [2023-01-27 20:00:11,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:00:15,834 INFO L130 PetriNetUnfolder]: 16865/25290 cut-off events. [2023-01-27 20:00:15,835 INFO L131 PetriNetUnfolder]: For 177584/177584 co-relation queries the response was YES. [2023-01-27 20:00:16,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118529 conditions, 25290 events. 16865/25290 cut-off events. For 177584/177584 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 168895 event pairs, 3256 based on Foata normal form. 10/25300 useless extension candidates. Maximal degree in co-relation 118474. Up to 8146 conditions per place. [2023-01-27 20:00:16,263 INFO L137 encePairwiseOnDemand]: 664/677 looper letters, 353 selfloop transitions, 140 changer transitions 14/507 dead transitions. [2023-01-27 20:00:16,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 507 transitions, 6820 flow [2023-01-27 20:00:16,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-27 20:00:16,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-27 20:00:16,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3861 transitions. [2023-01-27 20:00:16,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35644387001477107 [2023-01-27 20:00:16,266 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3861 transitions. [2023-01-27 20:00:16,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3861 transitions. [2023-01-27 20:00:16,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:00:16,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3861 transitions. [2023-01-27 20:00:16,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 241.3125) internal successors, (3861), 16 states have internal predecessors, (3861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:16,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 677.0) internal successors, (11509), 17 states have internal predecessors, (11509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:16,274 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 677.0) internal successors, (11509), 17 states have internal predecessors, (11509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:16,274 INFO L175 Difference]: Start difference. First operand has 164 places, 375 transitions, 4951 flow. Second operand 16 states and 3861 transitions. [2023-01-27 20:00:16,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 507 transitions, 6820 flow [2023-01-27 20:00:17,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 507 transitions, 6776 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-01-27 20:00:17,771 INFO L231 Difference]: Finished difference. Result has 182 places, 376 transitions, 5478 flow [2023-01-27 20:00:17,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=4907, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5478, PETRI_PLACES=182, PETRI_TRANSITIONS=376} [2023-01-27 20:00:17,771 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 144 predicate places. [2023-01-27 20:00:17,771 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 376 transitions, 5478 flow [2023-01-27 20:00:17,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 233.78571428571428) internal successors, (6546), 28 states have internal predecessors, (6546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:17,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:00:17,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:00:17,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-27 20:00:17,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:00:17,973 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:00:17,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:00:17,973 INFO L85 PathProgramCache]: Analyzing trace with hash -499241063, now seen corresponding path program 1 times [2023-01-27 20:00:17,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:00:17,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977607841] [2023-01-27 20:00:17,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:00:17,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:00:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:00:18,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:00:18,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:00:18,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977607841] [2023-01-27 20:00:18,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977607841] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:00:18,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053901281] [2023-01-27 20:00:18,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:00:18,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:00:18,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:00:18,089 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) [2023-01-27 20:00:18,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-27 20:00:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:00:18,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 20:00:18,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:00:18,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:00:18,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:00:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:00:18,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053901281] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 20:00:18,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 20:00:18,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2023-01-27 20:00:18,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624751538] [2023-01-27 20:00:18,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:00:18,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:00:18,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:00:18,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:00:18,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-01-27 20:00:18,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 677 [2023-01-27 20:00:18,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 376 transitions, 5478 flow. Second operand has 7 states, 7 states have (on average 245.85714285714286) internal successors, (1721), 7 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:18,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:00:18,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 677 [2023-01-27 20:00:18,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:00:22,549 INFO L130 PetriNetUnfolder]: 17237/25926 cut-off events. [2023-01-27 20:00:22,549 INFO L131 PetriNetUnfolder]: For 207930/207930 co-relation queries the response was YES. [2023-01-27 20:00:22,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124287 conditions, 25926 events. 17237/25926 cut-off events. For 207930/207930 co-relation queries the response was YES. Maximal size of possible extension queue 1221. Compared 175085 event pairs, 4358 based on Foata normal form. 328/26254 useless extension candidates. Maximal degree in co-relation 124227. Up to 11214 conditions per place. [2023-01-27 20:00:22,748 INFO L137 encePairwiseOnDemand]: 669/677 looper letters, 446 selfloop transitions, 41 changer transitions 0/487 dead transitions. [2023-01-27 20:00:22,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 487 transitions, 7583 flow [2023-01-27 20:00:22,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 20:00:22,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 20:00:22,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2042 transitions. [2023-01-27 20:00:22,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37703101920236337 [2023-01-27 20:00:22,751 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2042 transitions. [2023-01-27 20:00:22,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2042 transitions. [2023-01-27 20:00:22,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:00:22,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2042 transitions. [2023-01-27 20:00:22,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 255.25) internal successors, (2042), 8 states have internal predecessors, (2042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:22,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 677.0) internal successors, (6093), 9 states have internal predecessors, (6093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:22,755 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 677.0) internal successors, (6093), 9 states have internal predecessors, (6093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:22,755 INFO L175 Difference]: Start difference. First operand has 182 places, 376 transitions, 5478 flow. Second operand 8 states and 2042 transitions. [2023-01-27 20:00:22,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 487 transitions, 7583 flow [2023-01-27 20:00:24,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 487 transitions, 7407 flow, removed 37 selfloop flow, removed 11 redundant places. [2023-01-27 20:00:24,377 INFO L231 Difference]: Finished difference. Result has 178 places, 373 transitions, 5430 flow [2023-01-27 20:00:24,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=5225, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5430, PETRI_PLACES=178, PETRI_TRANSITIONS=373} [2023-01-27 20:00:24,377 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 140 predicate places. [2023-01-27 20:00:24,377 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 373 transitions, 5430 flow [2023-01-27 20:00:24,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 245.85714285714286) internal successors, (1721), 7 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:24,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:00:24,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:00:24,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-01-27 20:00:24,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:00:24,578 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:00:24,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:00:24,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1944526485, now seen corresponding path program 1 times [2023-01-27 20:00:24,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:00:24,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134359625] [2023-01-27 20:00:24,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:00:24,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:00:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:00:24,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:00:24,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:00:24,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134359625] [2023-01-27 20:00:24,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134359625] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:00:24,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:00:24,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:00:24,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713772655] [2023-01-27 20:00:24,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:00:24,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:00:24,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:00:24,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:00:24,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:00:24,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 677 [2023-01-27 20:00:24,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 373 transitions, 5430 flow. Second operand has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:24,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:00:24,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 677 [2023-01-27 20:00:24,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:00:29,907 INFO L130 PetriNetUnfolder]: 23265/35014 cut-off events. [2023-01-27 20:00:29,908 INFO L131 PetriNetUnfolder]: For 290514/290514 co-relation queries the response was YES. [2023-01-27 20:00:30,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169720 conditions, 35014 events. 23265/35014 cut-off events. For 290514/290514 co-relation queries the response was YES. Maximal size of possible extension queue 1646. Compared 249355 event pairs, 6592 based on Foata normal form. 18/35032 useless extension candidates. Maximal degree in co-relation 169661. Up to 18984 conditions per place. [2023-01-27 20:00:30,265 INFO L137 encePairwiseOnDemand]: 667/677 looper letters, 460 selfloop transitions, 19 changer transitions 362/841 dead transitions. [2023-01-27 20:00:30,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 841 transitions, 13269 flow [2023-01-27 20:00:30,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:00:30,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:00:30,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2305 transitions. [2023-01-27 20:00:30,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3783029706220253 [2023-01-27 20:00:30,267 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2305 transitions. [2023-01-27 20:00:30,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2305 transitions. [2023-01-27 20:00:30,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:00:30,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2305 transitions. [2023-01-27 20:00:30,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 256.1111111111111) internal successors, (2305), 9 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:30,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 677.0) internal successors, (6770), 10 states have internal predecessors, (6770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:30,272 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 677.0) internal successors, (6770), 10 states have internal predecessors, (6770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:30,272 INFO L175 Difference]: Start difference. First operand has 178 places, 373 transitions, 5430 flow. Second operand 9 states and 2305 transitions. [2023-01-27 20:00:30,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 841 transitions, 13269 flow [2023-01-27 20:00:32,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 841 transitions, 13263 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 20:00:32,460 INFO L231 Difference]: Finished difference. Result has 188 places, 333 transitions, 4695 flow [2023-01-27 20:00:32,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=5424, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4695, PETRI_PLACES=188, PETRI_TRANSITIONS=333} [2023-01-27 20:00:32,460 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 150 predicate places. [2023-01-27 20:00:32,460 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 333 transitions, 4695 flow [2023-01-27 20:00:32,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:32,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:00:32,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:00:32,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-27 20:00:32,461 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:00:32,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:00:32,461 INFO L85 PathProgramCache]: Analyzing trace with hash 935700835, now seen corresponding path program 2 times [2023-01-27 20:00:32,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:00:32,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975208572] [2023-01-27 20:00:32,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:00:32,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:00:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:00:32,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:00:32,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:00:32,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975208572] [2023-01-27 20:00:32,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975208572] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:00:32,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:00:32,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:00:32,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694056979] [2023-01-27 20:00:32,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:00:32,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 20:00:32,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:00:32,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 20:00:32,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-01-27 20:00:32,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 677 [2023-01-27 20:00:32,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 333 transitions, 4695 flow. Second operand has 10 states, 10 states have (on average 238.7) internal successors, (2387), 10 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:32,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:00:32,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 677 [2023-01-27 20:00:32,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:00:38,129 INFO L130 PetriNetUnfolder]: 23699/35438 cut-off events. [2023-01-27 20:00:38,129 INFO L131 PetriNetUnfolder]: For 302948/302948 co-relation queries the response was YES. [2023-01-27 20:00:38,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181610 conditions, 35438 events. 23699/35438 cut-off events. For 302948/302948 co-relation queries the response was YES. Maximal size of possible extension queue 1769. Compared 251148 event pairs, 8552 based on Foata normal form. 8/35446 useless extension candidates. Maximal degree in co-relation 181546. Up to 23316 conditions per place. [2023-01-27 20:00:38,479 INFO L137 encePairwiseOnDemand]: 668/677 looper letters, 441 selfloop transitions, 16 changer transitions 328/785 dead transitions. [2023-01-27 20:00:38,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 785 transitions, 12455 flow [2023-01-27 20:00:38,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 20:00:38,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 20:00:38,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2003 transitions. [2023-01-27 20:00:38,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3698301329394387 [2023-01-27 20:00:38,485 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2003 transitions. [2023-01-27 20:00:38,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2003 transitions. [2023-01-27 20:00:38,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:00:38,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2003 transitions. [2023-01-27 20:00:38,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 250.375) internal successors, (2003), 8 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:38,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 677.0) internal successors, (6093), 9 states have internal predecessors, (6093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:38,497 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 677.0) internal successors, (6093), 9 states have internal predecessors, (6093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:38,497 INFO L175 Difference]: Start difference. First operand has 188 places, 333 transitions, 4695 flow. Second operand 8 states and 2003 transitions. [2023-01-27 20:00:38,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 785 transitions, 12455 flow [2023-01-27 20:00:41,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 785 transitions, 12355 flow, removed 48 selfloop flow, removed 4 redundant places. [2023-01-27 20:00:41,233 INFO L231 Difference]: Finished difference. Result has 192 places, 334 transitions, 4743 flow [2023-01-27 20:00:41,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=4633, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4743, PETRI_PLACES=192, PETRI_TRANSITIONS=334} [2023-01-27 20:00:41,234 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 154 predicate places. [2023-01-27 20:00:41,234 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 334 transitions, 4743 flow [2023-01-27 20:00:41,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 238.7) internal successors, (2387), 10 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:41,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:00:41,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:00:41,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-27 20:00:41,234 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:00:41,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:00:41,235 INFO L85 PathProgramCache]: Analyzing trace with hash 726820333, now seen corresponding path program 3 times [2023-01-27 20:00:41,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:00:41,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867591236] [2023-01-27 20:00:41,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:00:41,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:00:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:00:41,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:00:41,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:00:41,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867591236] [2023-01-27 20:00:41,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867591236] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:00:41,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904510127] [2023-01-27 20:00:41,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:00:41,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:00:41,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:00:41,553 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:00:41,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-27 20:00:41,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-27 20:00:41,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:00:41,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-27 20:00:41,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:00:41,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:00:41,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:00:41,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904510127] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:00:41,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:00:41,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 17 [2023-01-27 20:00:41,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664252591] [2023-01-27 20:00:41,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:00:41,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:00:41,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:00:41,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:00:41,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-01-27 20:00:41,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 677 [2023-01-27 20:00:41,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 334 transitions, 4743 flow. Second operand has 9 states, 9 states have (on average 230.0) internal successors, (2070), 9 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:41,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:00:41,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 677 [2023-01-27 20:00:41,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:00:46,525 INFO L130 PetriNetUnfolder]: 21697/32558 cut-off events. [2023-01-27 20:00:46,525 INFO L131 PetriNetUnfolder]: For 284515/284515 co-relation queries the response was YES. [2023-01-27 20:00:46,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174013 conditions, 32558 events. 21697/32558 cut-off events. For 284515/284515 co-relation queries the response was YES. Maximal size of possible extension queue 1673. Compared 228746 event pairs, 4950 based on Foata normal form. 2/32560 useless extension candidates. Maximal degree in co-relation 173948. Up to 12346 conditions per place. [2023-01-27 20:00:46,959 INFO L137 encePairwiseOnDemand]: 668/677 looper letters, 448 selfloop transitions, 71 changer transitions 12/531 dead transitions. [2023-01-27 20:00:46,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 531 transitions, 8046 flow [2023-01-27 20:00:46,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 20:00:46,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 20:00:46,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1952 transitions. [2023-01-27 20:00:46,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3604135893648449 [2023-01-27 20:00:46,961 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1952 transitions. [2023-01-27 20:00:46,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1952 transitions. [2023-01-27 20:00:46,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:00:46,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1952 transitions. [2023-01-27 20:00:46,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:46,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 677.0) internal successors, (6093), 9 states have internal predecessors, (6093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:46,966 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 677.0) internal successors, (6093), 9 states have internal predecessors, (6093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:46,966 INFO L175 Difference]: Start difference. First operand has 192 places, 334 transitions, 4743 flow. Second operand 8 states and 1952 transitions. [2023-01-27 20:00:46,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 531 transitions, 8046 flow [2023-01-27 20:00:49,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 531 transitions, 7935 flow, removed 32 selfloop flow, removed 6 redundant places. [2023-01-27 20:00:49,322 INFO L231 Difference]: Finished difference. Result has 195 places, 363 transitions, 5602 flow [2023-01-27 20:00:49,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=4644, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5602, PETRI_PLACES=195, PETRI_TRANSITIONS=363} [2023-01-27 20:00:49,323 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 157 predicate places. [2023-01-27 20:00:49,323 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 363 transitions, 5602 flow [2023-01-27 20:00:49,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 230.0) internal successors, (2070), 9 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:49,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:00:49,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:00:49,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-27 20:00:49,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-01-27 20:00:49,528 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:00:49,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:00:49,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1155113705, now seen corresponding path program 1 times [2023-01-27 20:00:49,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:00:49,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846521721] [2023-01-27 20:00:49,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:00:49,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:00:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:00:49,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:00:49,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:00:49,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846521721] [2023-01-27 20:00:49,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846521721] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:00:49,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:00:49,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 20:00:49,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756428670] [2023-01-27 20:00:49,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:00:49,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:00:49,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:00:49,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:00:49,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:00:49,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 677 [2023-01-27 20:00:49,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 363 transitions, 5602 flow. Second operand has 5 states, 5 states have (on average 253.8) internal successors, (1269), 5 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:49,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:00:49,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 677 [2023-01-27 20:00:49,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:00:52,104 INFO L130 PetriNetUnfolder]: 11143/16972 cut-off events. [2023-01-27 20:00:52,105 INFO L131 PetriNetUnfolder]: For 175871/175871 co-relation queries the response was YES. [2023-01-27 20:00:52,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92018 conditions, 16972 events. 11143/16972 cut-off events. For 175871/175871 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 109636 event pairs, 4528 based on Foata normal form. 880/17852 useless extension candidates. Maximal degree in co-relation 91951. Up to 11715 conditions per place. [2023-01-27 20:00:52,254 INFO L137 encePairwiseOnDemand]: 672/677 looper letters, 129 selfloop transitions, 4 changer transitions 135/268 dead transitions. [2023-01-27 20:00:52,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 268 transitions, 3695 flow [2023-01-27 20:00:52,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:00:52,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:00:52,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1315 transitions. [2023-01-27 20:00:52,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38847858197932056 [2023-01-27 20:00:52,256 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1315 transitions. [2023-01-27 20:00:52,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1315 transitions. [2023-01-27 20:00:52,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:00:52,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1315 transitions. [2023-01-27 20:00:52,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 263.0) internal successors, (1315), 5 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:52,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 677.0) internal successors, (4062), 6 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:52,259 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 677.0) internal successors, (4062), 6 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:52,259 INFO L175 Difference]: Start difference. First operand has 195 places, 363 transitions, 5602 flow. Second operand 5 states and 1315 transitions. [2023-01-27 20:00:52,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 268 transitions, 3695 flow [2023-01-27 20:00:53,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 268 transitions, 3310 flow, removed 35 selfloop flow, removed 20 redundant places. [2023-01-27 20:00:53,460 INFO L231 Difference]: Finished difference. Result has 175 places, 133 transitions, 1278 flow [2023-01-27 20:00:53,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=2457, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1278, PETRI_PLACES=175, PETRI_TRANSITIONS=133} [2023-01-27 20:00:53,460 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 137 predicate places. [2023-01-27 20:00:53,460 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 133 transitions, 1278 flow [2023-01-27 20:00:53,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 253.8) internal successors, (1269), 5 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:53,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:00:53,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:00:53,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-01-27 20:00:53,461 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:00:53,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:00:53,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1367699374, now seen corresponding path program 1 times [2023-01-27 20:00:53,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:00:53,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620590954] [2023-01-27 20:00:53,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:00:53,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:00:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:00:54,086 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:00:54,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:00:54,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620590954] [2023-01-27 20:00:54,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620590954] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:00:54,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831751741] [2023-01-27 20:00:54,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:00:54,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:00:54,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:00:54,092 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:00:54,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-27 20:00:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:00:54,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 55 conjunts are in the unsatisfiable core [2023-01-27 20:00:54,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:00:54,438 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 [2023-01-27 20:00:54,510 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 [2023-01-27 20:00:54,594 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 [2023-01-27 20:00:54,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:00:54,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:00:54,803 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 20:00:54,803 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 [2023-01-27 20:00:55,165 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:00:55,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:00:56,240 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:00:56,241 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 266 treesize of output 158 [2023-01-27 20:00:56,298 INFO L321 Elim1Store]: treesize reduction 15, result has 55.9 percent of original size [2023-01-27 20:00:56,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33916 treesize of output 32110 [2023-01-27 20:00:56,974 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:00:56,975 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 4764 treesize of output 4500 [2023-01-27 20:00:57,059 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:00:57,060 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 4476 treesize of output 4356 [2023-01-27 20:00:57,154 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:00:57,155 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 4118 treesize of output 3630 [2023-01-27 20:09:11,178 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:09:11,178 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 103 treesize of output 67 [2023-01-27 20:09:11,226 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:09:11,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 2653 treesize of output 2526 [2023-01-27 20:09:11,364 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:09:11,365 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 1373 treesize of output 1301 [2023-01-27 20:09:11,406 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:09:11,407 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 1046 treesize of output 927 [2023-01-27 20:09:11,455 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:09:11,456 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 1149 treesize of output 1125 [2023-01-27 20:09:36,741 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:09:36,741 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 103 treesize of output 67 [2023-01-27 20:09:36,805 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:09:36,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 38477 treesize of output 36398 [2023-01-27 20:09:37,049 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:09:37,049 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 1373 treesize of output 1349 [2023-01-27 20:09:37,107 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:09:37,107 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 1325 treesize of output 1253 [2023-01-27 20:09:37,164 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:09:37,164 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 1014 treesize of output 895 [2023-01-27 20:09:53,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:09:53,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831751741] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:09:53,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:09:53,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 46 [2023-01-27 20:09:53,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860865649] [2023-01-27 20:09:53,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:09:53,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-01-27 20:09:53,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:09:53,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-01-27 20:09:53,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1955, Unknown=40, NotChecked=0, Total=2162 [2023-01-27 20:09:53,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 677 [2023-01-27 20:09:53,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 133 transitions, 1278 flow. Second operand has 47 states, 47 states have (on average 184.68085106382978) internal successors, (8680), 47 states have internal predecessors, (8680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:09:53,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:09:53,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 677 [2023-01-27 20:09:53,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:09:59,606 INFO L130 PetriNetUnfolder]: 22283/32058 cut-off events. [2023-01-27 20:09:59,607 INFO L131 PetriNetUnfolder]: For 287780/287780 co-relation queries the response was YES. [2023-01-27 20:10:00,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169764 conditions, 32058 events. 22283/32058 cut-off events. For 287780/287780 co-relation queries the response was YES. Maximal size of possible extension queue 1263. Compared 201679 event pairs, 1870 based on Foata normal form. 576/32634 useless extension candidates. Maximal degree in co-relation 169709. Up to 8390 conditions per place. [2023-01-27 20:10:00,182 INFO L137 encePairwiseOnDemand]: 657/677 looper letters, 502 selfloop transitions, 88 changer transitions 15/605 dead transitions. [2023-01-27 20:10:00,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 605 transitions, 6544 flow [2023-01-27 20:10:00,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-27 20:10:00,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-27 20:10:00,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4291 transitions. [2023-01-27 20:10:00,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28810259164764335 [2023-01-27 20:10:00,186 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4291 transitions. [2023-01-27 20:10:00,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4291 transitions. [2023-01-27 20:10:00,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:10:00,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4291 transitions. [2023-01-27 20:10:00,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 195.04545454545453) internal successors, (4291), 22 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:10:00,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 677.0) internal successors, (15571), 23 states have internal predecessors, (15571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:10:00,194 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 677.0) internal successors, (15571), 23 states have internal predecessors, (15571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:10:00,194 INFO L175 Difference]: Start difference. First operand has 175 places, 133 transitions, 1278 flow. Second operand 22 states and 4291 transitions. [2023-01-27 20:10:00,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 605 transitions, 6544 flow [2023-01-27 20:10:09,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 605 transitions, 6003 flow, removed 225 selfloop flow, removed 18 redundant places. [2023-01-27 20:10:09,573 INFO L231 Difference]: Finished difference. Result has 147 places, 198 transitions, 2110 flow [2023-01-27 20:10:09,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2110, PETRI_PLACES=147, PETRI_TRANSITIONS=198} [2023-01-27 20:10:09,573 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 109 predicate places. [2023-01-27 20:10:09,573 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 198 transitions, 2110 flow [2023-01-27 20:10:09,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 184.68085106382978) internal successors, (8680), 47 states have internal predecessors, (8680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:10:09,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:10:09,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:10:09,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-27 20:10:09,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:10:09,775 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:10:09,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:10:09,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1522311406, now seen corresponding path program 2 times [2023-01-27 20:10:09,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:10:09,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47115651] [2023-01-27 20:10:09,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:10:09,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:10:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:10:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:10:10,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:10:10,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47115651] [2023-01-27 20:10:10,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47115651] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:10:10,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850978580] [2023-01-27 20:10:10,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:10:10,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:10:10,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:10:10,244 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:10:10,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-27 20:10:10,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:10:10,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:10:10,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-27 20:10:10,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:10:10,833 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:10:10,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:10:11,379 INFO L321 Elim1Store]: treesize reduction 22, result has 75.0 percent of original size [2023-01-27 20:10:11,380 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 41 treesize of output 74 [2023-01-27 20:10:11,427 INFO L321 Elim1Store]: treesize reduction 22, result has 75.0 percent of original size [2023-01-27 20:10:11,428 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 41 treesize of output 74 [2023-01-27 20:10:11,558 INFO L321 Elim1Store]: treesize reduction 26, result has 87.3 percent of original size [2023-01-27 20:10:11,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 78 treesize of output 200 [2023-01-27 20:10:12,673 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:10:12,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850978580] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:10:12,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:10:12,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 11] total 37 [2023-01-27 20:10:12,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928684779] [2023-01-27 20:10:12,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:10:12,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-01-27 20:10:12,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:10:12,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-01-27 20:10:12,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2023-01-27 20:10:12,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 677 [2023-01-27 20:10:12,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 198 transitions, 2110 flow. Second operand has 37 states, 37 states have (on average 196.1891891891892) internal successors, (7259), 37 states have internal predecessors, (7259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:10:12,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:10:12,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 677 [2023-01-27 20:10:12,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:10:20,189 INFO L130 PetriNetUnfolder]: 33841/48436 cut-off events. [2023-01-27 20:10:20,189 INFO L131 PetriNetUnfolder]: For 262866/262866 co-relation queries the response was YES. [2023-01-27 20:10:20,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248537 conditions, 48436 events. 33841/48436 cut-off events. For 262866/262866 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 317935 event pairs, 9536 based on Foata normal form. 316/48752 useless extension candidates. Maximal degree in co-relation 248486. Up to 25574 conditions per place. [2023-01-27 20:10:20,719 INFO L137 encePairwiseOnDemand]: 659/677 looper letters, 474 selfloop transitions, 93 changer transitions 7/574 dead transitions. [2023-01-27 20:10:20,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 574 transitions, 6731 flow [2023-01-27 20:10:20,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-27 20:10:20,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-27 20:10:20,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3717 transitions. [2023-01-27 20:10:20,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3050221565731167 [2023-01-27 20:10:20,722 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3717 transitions. [2023-01-27 20:10:20,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3717 transitions. [2023-01-27 20:10:20,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:10:20,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3717 transitions. [2023-01-27 20:10:20,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 206.5) internal successors, (3717), 18 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:10:20,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 677.0) internal successors, (12863), 19 states have internal predecessors, (12863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:10:20,730 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 677.0) internal successors, (12863), 19 states have internal predecessors, (12863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:10:20,730 INFO L175 Difference]: Start difference. First operand has 147 places, 198 transitions, 2110 flow. Second operand 18 states and 3717 transitions. [2023-01-27 20:10:20,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 574 transitions, 6731 flow [2023-01-27 20:10:26,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 574 transitions, 6584 flow, removed 27 selfloop flow, removed 11 redundant places. [2023-01-27 20:10:26,180 INFO L231 Difference]: Finished difference. Result has 162 places, 271 transitions, 3185 flow [2023-01-27 20:10:26,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=2020, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3185, PETRI_PLACES=162, PETRI_TRANSITIONS=271} [2023-01-27 20:10:26,181 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 124 predicate places. [2023-01-27 20:10:26,181 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 271 transitions, 3185 flow [2023-01-27 20:10:26,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 196.1891891891892) internal successors, (7259), 37 states have internal predecessors, (7259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:10:26,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:10:26,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:10:26,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-01-27 20:10:26,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:10:26,386 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:10:26,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:10:26,387 INFO L85 PathProgramCache]: Analyzing trace with hash 31784872, now seen corresponding path program 3 times [2023-01-27 20:10:26,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:10:26,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670669825] [2023-01-27 20:10:26,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:10:26,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:10:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:10:27,083 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:10:27,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:10:27,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670669825] [2023-01-27 20:10:27,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670669825] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:10:27,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199949176] [2023-01-27 20:10:27,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:10:27,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:10:27,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:10:27,085 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:10:27,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-27 20:10:27,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 20:10:27,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:10:27,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 48 conjunts are in the unsatisfiable core [2023-01-27 20:10:27,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:10:27,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:10:27,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:10:27,641 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 20:10:27,642 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 [2023-01-27 20:10:27,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:10:27,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:10:27,709 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 20:10:27,709 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 [2023-01-27 20:10:27,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:10:27,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:10:28,982 INFO L321 Elim1Store]: treesize reduction 11, result has 95.6 percent of original size [2023-01-27 20:10:28,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 3328 treesize of output 3197 [2023-01-27 20:10:29,179 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:10:29,180 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 1595 treesize of output 1492 [2023-01-27 20:10:29,241 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:10:29,241 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 1467 treesize of output 1428 [2023-01-27 20:10:29,294 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:10:29,295 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 1403 treesize of output 1380 [2023-01-27 20:10:29,347 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:10:29,347 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 1371 treesize of output 1364 [2023-01-27 20:10:29,404 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:10:29,404 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 1355 treesize of output 1348 [2023-01-27 20:10:29,459 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:10:29,460 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 1339 treesize of output 1316 Received shutdown request... [2023-01-27 20:12:52,668 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 [2023-01-27 20:12:52,669 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-27 20:12:52,669 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 20:12:52,673 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 20:12:52,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-27 20:12:52,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:12:52,881 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 75ms.. [2023-01-27 20:12:52,882 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 20:12:52,882 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 20:12:52,882 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 20:12:52,883 INFO L445 BasicCegarLoop]: Path program histogram: [6, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:12:52,885 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 20:12:52,886 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 20:12:52,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 08:12:52 BasicIcfg [2023-01-27 20:12:52,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 20:12:52,888 INFO L158 Benchmark]: Toolchain (without parser) took 827554.57ms. Allocated memory was 440.4MB in the beginning and 10.3GB in the end (delta: 9.9GB). Free memory was 391.5MB in the beginning and 2.0GB in the end (delta: -1.6GB). Peak memory consumption was 9.0GB. Max. memory is 16.0GB. [2023-01-27 20:12:52,888 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 341.8MB. Free memory is still 291.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 20:12:52,888 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.18ms. Allocated memory is still 440.4MB. Free memory was 391.5MB in the beginning and 379.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 20:12:52,888 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.92ms. Allocated memory is still 440.4MB. Free memory was 379.3MB in the beginning and 376.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 20:12:52,888 INFO L158 Benchmark]: Boogie Preprocessor took 26.23ms. Allocated memory is still 440.4MB. Free memory was 376.9MB in the beginning and 374.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 20:12:52,888 INFO L158 Benchmark]: RCFGBuilder took 588.33ms. Allocated memory is still 440.4MB. Free memory was 374.4MB in the beginning and 349.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-27 20:12:52,888 INFO L158 Benchmark]: TraceAbstraction took 826731.02ms. Allocated memory was 440.4MB in the beginning and 10.3GB in the end (delta: 9.9GB). Free memory was 348.8MB in the beginning and 2.0GB in the end (delta: -1.6GB). Peak memory consumption was 9.0GB. Max. memory is 16.0GB. [2023-01-27 20:12:52,889 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 341.8MB. Free memory is still 291.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 176.18ms. Allocated memory is still 440.4MB. Free memory was 391.5MB in the beginning and 379.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 27.92ms. Allocated memory is still 440.4MB. Free memory was 379.3MB in the beginning and 376.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.23ms. Allocated memory is still 440.4MB. Free memory was 376.9MB in the beginning and 374.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 588.33ms. Allocated memory is still 440.4MB. Free memory was 374.4MB in the beginning and 349.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 826731.02ms. Allocated memory was 440.4MB in the beginning and 10.3GB in the end (delta: 9.9GB). Free memory was 348.8MB in the beginning and 2.0GB in the end (delta: -1.6GB). Peak memory consumption was 9.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.2s, 292 PlacesBefore, 38 PlacesAfterwards, 311 TransitionsBefore, 36 TransitionsAfterwards, 14784 CoEnabledTransitionPairs, 7 FixpointIterations, 140 TrivialSequentialCompositions, 119 ConcurrentSequentialCompositions, 36 TrivialYvCompositions, 37 ConcurrentYvCompositions, 21 ChoiceCompositions, 353 TotalNumberOfCompositions, 16261 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13526, independent: 13400, independent conditional: 0, independent unconditional: 13400, dependent: 126, dependent conditional: 0, dependent unconditional: 126, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8611, independent: 8571, independent conditional: 0, independent unconditional: 8571, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13526, independent: 4829, independent conditional: 0, independent unconditional: 4829, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 8611, unknown conditional: 0, unknown unconditional: 8611] , Statistics on independence cache: Total cache size (in pairs): 132, Positive cache size: 122, Positive conditional cache size: 0, Positive unconditional cache size: 122, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 75ms.. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 75ms.. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 75ms.. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 75ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 419 locations, 4 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: 826.6s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 109.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7287 SdHoareTripleChecker+Valid, 8.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7287 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 6.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 180 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15860 IncrementalHoareTripleChecker+Invalid, 16040 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 180 mSolverCounterUnsat, 0 mSDtfsCounter, 15860 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1156 GetRequests, 547 SyntacticMatches, 11 SemanticMatches, 598 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3682 ImplicationChecksByTransitivity, 11.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5602occurred in iteration=23, InterpolantAutomatonStates: 309, 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, 1.5s SatisfiabilityAnalysisTime, 556.6s InterpolantComputationTime, 1110 NumberOfCodeBlocks, 1098 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 1381 ConstructedInterpolants, 20 QuantifiedInterpolants, 17334 SizeOfPredicates, 425 NumberOfNonLiveVariables, 5156 ConjunctsInSsa, 399 ConjunctsInUnsatCore, 57 InterpolantComputations, 22 PerfectInterpolantSequences, 70/128 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