/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/unroll-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 01:38:41,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 01:38:41,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 01:38:41,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 01:38:41,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 01:38:41,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 01:38:41,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 01:38:41,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 01:38:41,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 01:38:41,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 01:38:41,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 01:38:41,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 01:38:41,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 01:38:41,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 01:38:41,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 01:38:41,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 01:38:41,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 01:38:41,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 01:38:41,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 01:38:41,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 01:38:41,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 01:38:41,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 01:38:41,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 01:38:41,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 01:38:41,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 01:38:41,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 01:38:41,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 01:38:41,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 01:38:41,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 01:38:41,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 01:38:41,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 01:38:41,877 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 01:38:41,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 01:38:41,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 01:38:41,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 01:38:41,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 01:38:41,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 01:38:41,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 01:38:41,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 01:38:41,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 01:38:41,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 01:38:41,881 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-12 01:38:41,900 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 01:38:41,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 01:38:41,902 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 01:38:41,902 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 01:38:41,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 01:38:41,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 01:38:41,903 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 01:38:41,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 01:38:41,904 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 01:38:41,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 01:38:41,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 01:38:41,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 01:38:41,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 01:38:41,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 01:38:41,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 01:38:41,905 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 01:38:41,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 01:38:41,905 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 01:38:41,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 01:38:41,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 01:38:41,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 01:38:41,905 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 01:38:41,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 01:38:41,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 01:38:41,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 01:38:41,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 01:38:41,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 01:38:41,906 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 01:38:41,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 01:38:41,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 01:38:41,906 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 01:38:41,906 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 01:38:42,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 01:38:42,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 01:38:42,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 01:38:42,219 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 01:38:42,219 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 01:38:42,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-2.wvr.c [2022-12-12 01:38:43,293 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 01:38:43,490 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 01:38:43,491 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-2.wvr.c [2022-12-12 01:38:43,502 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd5859307/93696a53abbb439e80cb00119e1f2d86/FLAG39d07431e [2022-12-12 01:38:43,511 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd5859307/93696a53abbb439e80cb00119e1f2d86 [2022-12-12 01:38:43,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 01:38:43,517 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 01:38:43,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 01:38:43,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 01:38:43,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 01:38:43,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 01:38:43" (1/1) ... [2022-12-12 01:38:43,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6084637e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:38:43, skipping insertion in model container [2022-12-12 01:38:43,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 01:38:43" (1/1) ... [2022-12-12 01:38:43,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 01:38:43,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 01:38:43,679 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-2.wvr.c[2428,2441] [2022-12-12 01:38:43,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 01:38:43,696 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 01:38:43,722 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-2.wvr.c[2428,2441] [2022-12-12 01:38:43,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 01:38:43,736 INFO L208 MainTranslator]: Completed translation [2022-12-12 01:38:43,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:38:43 WrapperNode [2022-12-12 01:38:43,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 01:38:43,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 01:38:43,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 01:38:43,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 01:38:43,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:38:43" (1/1) ... [2022-12-12 01:38:43,754 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:38:43" (1/1) ... [2022-12-12 01:38:43,777 INFO L138 Inliner]: procedures = 24, calls = 32, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 134 [2022-12-12 01:38:43,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 01:38:43,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 01:38:43,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 01:38:43,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 01:38:43,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:38:43" (1/1) ... [2022-12-12 01:38:43,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:38:43" (1/1) ... [2022-12-12 01:38:43,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:38:43" (1/1) ... [2022-12-12 01:38:43,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:38:43" (1/1) ... [2022-12-12 01:38:43,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:38:43" (1/1) ... [2022-12-12 01:38:43,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:38:43" (1/1) ... [2022-12-12 01:38:43,814 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:38:43" (1/1) ... [2022-12-12 01:38:43,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:38:43" (1/1) ... [2022-12-12 01:38:43,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 01:38:43,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 01:38:43,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 01:38:43,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 01:38:43,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:38:43" (1/1) ... [2022-12-12 01:38:43,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 01:38:43,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:38:43,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 01:38:43,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 01:38:43,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 01:38:43,872 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 01:38:43,872 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 01:38:43,872 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 01:38:43,872 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 01:38:43,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 01:38:43,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 01:38:43,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 01:38:43,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 01:38:43,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 01:38:43,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 01:38:43,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 01:38:43,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 01:38:43,873 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 01:38:43,956 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 01:38:43,971 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 01:38:44,221 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 01:38:44,227 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 01:38:44,227 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-12 01:38:44,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 01:38:44 BoogieIcfgContainer [2022-12-12 01:38:44,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 01:38:44,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 01:38:44,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 01:38:44,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 01:38:44,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 01:38:43" (1/3) ... [2022-12-12 01:38:44,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c0aca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 01:38:44, skipping insertion in model container [2022-12-12 01:38:44,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:38:43" (2/3) ... [2022-12-12 01:38:44,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c0aca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 01:38:44, skipping insertion in model container [2022-12-12 01:38:44,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 01:38:44" (3/3) ... [2022-12-12 01:38:44,234 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-2.wvr.c [2022-12-12 01:38:44,249 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 01:38:44,249 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 01:38:44,249 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 01:38:44,334 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 01:38:44,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 154 transitions, 324 flow [2022-12-12 01:38:44,407 INFO L130 PetriNetUnfolder]: 14/152 cut-off events. [2022-12-12 01:38:44,408 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 01:38:44,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 152 events. 14/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 145 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2022-12-12 01:38:44,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 154 transitions, 324 flow [2022-12-12 01:38:44,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 144 transitions, 300 flow [2022-12-12 01:38:44,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 01:38:44,428 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;@3fdc6d80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 01:38:44,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 01:38:44,464 INFO L130 PetriNetUnfolder]: 13/140 cut-off events. [2022-12-12 01:38:44,464 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 01:38:44,464 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:44,465 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:44,466 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:44,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:44,469 INFO L85 PathProgramCache]: Analyzing trace with hash 35436093, now seen corresponding path program 1 times [2022-12-12 01:38:44,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:44,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876176354] [2022-12-12 01:38:44,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:44,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:45,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:45,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:45,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876176354] [2022-12-12 01:38:45,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876176354] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:45,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:45,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 01:38:45,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639312268] [2022-12-12 01:38:45,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:45,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 01:38:45,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:45,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 01:38:45,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-12 01:38:45,066 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 154 [2022-12-12 01:38:45,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 144 transitions, 300 flow. Second operand has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:45,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:45,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 154 [2022-12-12 01:38:45,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:45,236 INFO L130 PetriNetUnfolder]: 16/228 cut-off events. [2022-12-12 01:38:45,236 INFO L131 PetriNetUnfolder]: For 27/28 co-relation queries the response was YES. [2022-12-12 01:38:45,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 228 events. 16/228 cut-off events. For 27/28 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 504 event pairs, 5 based on Foata normal form. 24/229 useless extension candidates. Maximal degree in co-relation 152. Up to 53 conditions per place. [2022-12-12 01:38:45,239 INFO L137 encePairwiseOnDemand]: 135/154 looper letters, 36 selfloop transitions, 7 changer transitions 5/137 dead transitions. [2022-12-12 01:38:45,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 137 transitions, 382 flow [2022-12-12 01:38:45,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 01:38:45,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 01:38:45,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 845 transitions. [2022-12-12 01:38:45,261 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6858766233766234 [2022-12-12 01:38:45,264 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 7 predicate places. [2022-12-12 01:38:45,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 137 transitions, 382 flow [2022-12-12 01:38:45,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 132 transitions, 362 flow [2022-12-12 01:38:45,270 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 132 transitions, 362 flow [2022-12-12 01:38:45,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:45,271 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:45,271 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:45,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 01:38:45,272 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:45,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:45,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1825438348, now seen corresponding path program 1 times [2022-12-12 01:38:45,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:45,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576359425] [2022-12-12 01:38:45,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:45,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:45,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 01:38:45,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:45,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576359425] [2022-12-12 01:38:45,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576359425] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:45,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:45,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 01:38:45,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971597140] [2022-12-12 01:38:45,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:45,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 01:38:45,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:45,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 01:38:45,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-12 01:38:45,479 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 154 [2022-12-12 01:38:45,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 132 transitions, 362 flow. Second operand has 6 states, 6 states have (on average 106.33333333333333) internal successors, (638), 6 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:45,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:45,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 154 [2022-12-12 01:38:45,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:45,597 INFO L130 PetriNetUnfolder]: 73/494 cut-off events. [2022-12-12 01:38:45,598 INFO L131 PetriNetUnfolder]: For 172/184 co-relation queries the response was YES. [2022-12-12 01:38:45,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 819 conditions, 494 events. 73/494 cut-off events. For 172/184 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2427 event pairs, 20 based on Foata normal form. 1/451 useless extension candidates. Maximal degree in co-relation 569. Up to 100 conditions per place. [2022-12-12 01:38:45,601 INFO L137 encePairwiseOnDemand]: 147/154 looper letters, 53 selfloop transitions, 5 changer transitions 4/159 dead transitions. [2022-12-12 01:38:45,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 159 transitions, 589 flow [2022-12-12 01:38:45,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 01:38:45,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 01:38:45,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 675 transitions. [2022-12-12 01:38:45,604 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7305194805194806 [2022-12-12 01:38:45,605 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 7 predicate places. [2022-12-12 01:38:45,606 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 159 transitions, 589 flow [2022-12-12 01:38:45,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 155 transitions, 562 flow [2022-12-12 01:38:45,610 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 155 transitions, 562 flow [2022-12-12 01:38:45,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 106.33333333333333) internal successors, (638), 6 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:45,614 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:45,614 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:45,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 01:38:45,614 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:45,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:45,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1769900810, now seen corresponding path program 1 times [2022-12-12 01:38:45,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:45,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876813002] [2022-12-12 01:38:45,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:45,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:45,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 01:38:45,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:45,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876813002] [2022-12-12 01:38:45,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876813002] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:38:45,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472471584] [2022-12-12 01:38:45,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:45,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:38:45,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:38:45,884 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:38:45,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 01:38:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:46,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 01:38:46,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:38:46,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 01:38:46,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:38:46,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 01:38:46,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472471584] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 01:38:46,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 01:38:46,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2022-12-12 01:38:46,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578643437] [2022-12-12 01:38:46,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:46,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 01:38:46,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:46,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 01:38:46,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-12 01:38:46,242 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 154 [2022-12-12 01:38:46,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 155 transitions, 562 flow. Second operand has 4 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:46,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:46,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 154 [2022-12-12 01:38:46,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:46,343 INFO L130 PetriNetUnfolder]: 140/729 cut-off events. [2022-12-12 01:38:46,343 INFO L131 PetriNetUnfolder]: For 452/460 co-relation queries the response was YES. [2022-12-12 01:38:46,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 729 events. 140/729 cut-off events. For 452/460 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4315 event pairs, 31 based on Foata normal form. 0/644 useless extension candidates. Maximal degree in co-relation 892. Up to 128 conditions per place. [2022-12-12 01:38:46,349 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 27 selfloop transitions, 5 changer transitions 0/167 dead transitions. [2022-12-12 01:38:46,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 167 transitions, 678 flow [2022-12-12 01:38:46,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 01:38:46,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 01:38:46,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 532 transitions. [2022-12-12 01:38:46,351 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8636363636363636 [2022-12-12 01:38:46,352 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 8 predicate places. [2022-12-12 01:38:46,352 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 167 transitions, 678 flow [2022-12-12 01:38:46,354 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 167 transitions, 678 flow [2022-12-12 01:38:46,355 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 167 transitions, 678 flow [2022-12-12 01:38:46,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:46,355 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:46,355 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:46,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-12 01:38:46,562 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 [2022-12-12 01:38:46,563 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:46,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:46,564 INFO L85 PathProgramCache]: Analyzing trace with hash -911036214, now seen corresponding path program 2 times [2022-12-12 01:38:46,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:46,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083555495] [2022-12-12 01:38:46,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:46,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:46,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 01:38:46,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:46,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083555495] [2022-12-12 01:38:46,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083555495] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:46,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:46,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 01:38:46,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416646472] [2022-12-12 01:38:46,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:46,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 01:38:46,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:46,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 01:38:46,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 01:38:46,731 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 154 [2022-12-12 01:38:46,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 167 transitions, 678 flow. Second operand has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:46,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:46,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 154 [2022-12-12 01:38:46,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:46,859 INFO L130 PetriNetUnfolder]: 201/1006 cut-off events. [2022-12-12 01:38:46,860 INFO L131 PetriNetUnfolder]: For 859/887 co-relation queries the response was YES. [2022-12-12 01:38:46,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2132 conditions, 1006 events. 201/1006 cut-off events. For 859/887 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6202 event pairs, 54 based on Foata normal form. 4/902 useless extension candidates. Maximal degree in co-relation 1509. Up to 206 conditions per place. [2022-12-12 01:38:46,864 INFO L137 encePairwiseOnDemand]: 147/154 looper letters, 50 selfloop transitions, 6 changer transitions 6/194 dead transitions. [2022-12-12 01:38:46,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 194 transitions, 954 flow [2022-12-12 01:38:46,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 01:38:46,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 01:38:46,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 777 transitions. [2022-12-12 01:38:46,866 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8409090909090909 [2022-12-12 01:38:46,867 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 13 predicate places. [2022-12-12 01:38:46,868 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 194 transitions, 954 flow [2022-12-12 01:38:46,872 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 188 transitions, 906 flow [2022-12-12 01:38:46,872 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 188 transitions, 906 flow [2022-12-12 01:38:46,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:46,873 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:46,873 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:46,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 01:38:46,874 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:46,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:46,874 INFO L85 PathProgramCache]: Analyzing trace with hash 768084534, now seen corresponding path program 3 times [2022-12-12 01:38:46,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:46,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738832859] [2022-12-12 01:38:46,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:46,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:47,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 01:38:47,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:47,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738832859] [2022-12-12 01:38:47,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738832859] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:38:47,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149362526] [2022-12-12 01:38:47,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 01:38:47,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:38:47,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:38:47,050 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:38:47,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 01:38:47,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 01:38:47,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:38:47,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-12 01:38:47,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:38:47,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 01:38:47,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 01:38:47,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149362526] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:47,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 01:38:47,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2022-12-12 01:38:47,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679193549] [2022-12-12 01:38:47,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:47,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 01:38:47,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:47,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 01:38:47,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-12 01:38:47,280 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 154 [2022-12-12 01:38:47,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 188 transitions, 906 flow. Second operand has 4 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:47,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:47,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 154 [2022-12-12 01:38:47,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:47,375 INFO L130 PetriNetUnfolder]: 199/967 cut-off events. [2022-12-12 01:38:47,375 INFO L131 PetriNetUnfolder]: For 1224/1280 co-relation queries the response was YES. [2022-12-12 01:38:47,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2319 conditions, 967 events. 199/967 cut-off events. For 1224/1280 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 5798 event pairs, 51 based on Foata normal form. 20/888 useless extension candidates. Maximal degree in co-relation 1667. Up to 206 conditions per place. [2022-12-12 01:38:47,380 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 41 selfloop transitions, 7 changer transitions 0/186 dead transitions. [2022-12-12 01:38:47,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 186 transitions, 987 flow [2022-12-12 01:38:47,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 01:38:47,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 01:38:47,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 531 transitions. [2022-12-12 01:38:47,382 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.862012987012987 [2022-12-12 01:38:47,382 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 14 predicate places. [2022-12-12 01:38:47,382 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 186 transitions, 987 flow [2022-12-12 01:38:47,386 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 186 transitions, 987 flow [2022-12-12 01:38:47,386 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 186 transitions, 987 flow [2022-12-12 01:38:47,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:47,387 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:47,387 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:47,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 01:38:47,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:38:47,592 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:47,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:47,593 INFO L85 PathProgramCache]: Analyzing trace with hash 33372500, now seen corresponding path program 1 times [2022-12-12 01:38:47,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:47,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238183628] [2022-12-12 01:38:47,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:47,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:47,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 01:38:47,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:47,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238183628] [2022-12-12 01:38:47,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238183628] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:47,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:47,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 01:38:47,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384507739] [2022-12-12 01:38:47,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:47,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 01:38:47,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:47,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 01:38:47,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 01:38:47,706 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 154 [2022-12-12 01:38:47,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 186 transitions, 987 flow. Second operand has 5 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:47,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:47,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 154 [2022-12-12 01:38:47,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:47,850 INFO L130 PetriNetUnfolder]: 219/1028 cut-off events. [2022-12-12 01:38:47,850 INFO L131 PetriNetUnfolder]: For 2169/2471 co-relation queries the response was YES. [2022-12-12 01:38:47,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2814 conditions, 1028 events. 219/1028 cut-off events. For 2169/2471 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6235 event pairs, 62 based on Foata normal form. 18/941 useless extension candidates. Maximal degree in co-relation 2415. Up to 236 conditions per place. [2022-12-12 01:38:47,855 INFO L137 encePairwiseOnDemand]: 147/154 looper letters, 73 selfloop transitions, 9 changer transitions 7/221 dead transitions. [2022-12-12 01:38:47,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 221 transitions, 1457 flow [2022-12-12 01:38:47,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 01:38:47,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 01:38:47,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 781 transitions. [2022-12-12 01:38:47,857 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8452380952380952 [2022-12-12 01:38:47,858 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 19 predicate places. [2022-12-12 01:38:47,858 INFO L82 GeneralOperation]: Start removeDead. Operand has 156 places, 221 transitions, 1457 flow [2022-12-12 01:38:47,862 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 214 transitions, 1359 flow [2022-12-12 01:38:47,862 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 214 transitions, 1359 flow [2022-12-12 01:38:47,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:47,863 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:47,863 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:47,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 01:38:47,863 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:47,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:47,864 INFO L85 PathProgramCache]: Analyzing trace with hash -252877976, now seen corresponding path program 2 times [2022-12-12 01:38:47,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:47,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107993177] [2022-12-12 01:38:47,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:47,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:47,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 01:38:47,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:47,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107993177] [2022-12-12 01:38:47,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107993177] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:47,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:47,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 01:38:47,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554102255] [2022-12-12 01:38:47,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:47,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 01:38:47,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:47,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 01:38:47,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 01:38:47,945 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 154 [2022-12-12 01:38:47,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 214 transitions, 1359 flow. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:47,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:47,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 154 [2022-12-12 01:38:47,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:48,086 INFO L130 PetriNetUnfolder]: 274/1293 cut-off events. [2022-12-12 01:38:48,086 INFO L131 PetriNetUnfolder]: For 2678/2911 co-relation queries the response was YES. [2022-12-12 01:38:48,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3674 conditions, 1293 events. 274/1293 cut-off events. For 2678/2911 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 8710 event pairs, 66 based on Foata normal form. 4/1169 useless extension candidates. Maximal degree in co-relation 2929. Up to 292 conditions per place. [2022-12-12 01:38:48,093 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 63 selfloop transitions, 8 changer transitions 0/225 dead transitions. [2022-12-12 01:38:48,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 225 transitions, 1587 flow [2022-12-12 01:38:48,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 01:38:48,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 01:38:48,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 536 transitions. [2022-12-12 01:38:48,095 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8701298701298701 [2022-12-12 01:38:48,095 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 21 predicate places. [2022-12-12 01:38:48,095 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 225 transitions, 1587 flow [2022-12-12 01:38:48,100 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 225 transitions, 1587 flow [2022-12-12 01:38:48,101 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 225 transitions, 1587 flow [2022-12-12 01:38:48,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:48,101 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:48,101 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:48,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 01:38:48,101 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:48,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:48,102 INFO L85 PathProgramCache]: Analyzing trace with hash -670345598, now seen corresponding path program 3 times [2022-12-12 01:38:48,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:48,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233565495] [2022-12-12 01:38:48,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:48,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:48,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 01:38:48,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:48,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233565495] [2022-12-12 01:38:48,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233565495] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:38:48,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685397437] [2022-12-12 01:38:48,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 01:38:48,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:38:48,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:38:48,330 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:38:48,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 01:38:48,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 01:38:48,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:38:48,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 01:38:48,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:38:48,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 01:38:48,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 01:38:48,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685397437] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:48,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 01:38:48,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2022-12-12 01:38:48,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076088955] [2022-12-12 01:38:48,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:48,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 01:38:48,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:48,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 01:38:48,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-12-12 01:38:48,512 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 154 [2022-12-12 01:38:48,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 225 transitions, 1587 flow. Second operand has 5 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:48,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:48,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 154 [2022-12-12 01:38:48,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:48,678 INFO L130 PetriNetUnfolder]: 281/1305 cut-off events. [2022-12-12 01:38:48,678 INFO L131 PetriNetUnfolder]: For 2890/3194 co-relation queries the response was YES. [2022-12-12 01:38:48,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4043 conditions, 1305 events. 281/1305 cut-off events. For 2890/3194 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 8524 event pairs, 67 based on Foata normal form. 17/1198 useless extension candidates. Maximal degree in co-relation 3521. Up to 279 conditions per place. [2022-12-12 01:38:48,687 INFO L137 encePairwiseOnDemand]: 147/154 looper letters, 75 selfloop transitions, 21 changer transitions 0/224 dead transitions. [2022-12-12 01:38:48,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 224 transitions, 1744 flow [2022-12-12 01:38:48,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 01:38:48,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 01:38:48,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 787 transitions. [2022-12-12 01:38:48,689 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8517316017316018 [2022-12-12 01:38:48,689 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 25 predicate places. [2022-12-12 01:38:48,690 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 224 transitions, 1744 flow [2022-12-12 01:38:48,695 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 224 transitions, 1744 flow [2022-12-12 01:38:48,695 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 224 transitions, 1744 flow [2022-12-12 01:38:48,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:48,695 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:48,695 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:48,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-12 01:38:48,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:38:48,917 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:48,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:48,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1813098800, now seen corresponding path program 1 times [2022-12-12 01:38:48,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:48,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954335446] [2022-12-12 01:38:48,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:48,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:49,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 01:38:49,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:49,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954335446] [2022-12-12 01:38:49,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954335446] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:38:49,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756675692] [2022-12-12 01:38:49,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:49,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:38:49,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:38:49,121 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:38:49,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 01:38:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:49,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-12 01:38:49,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:38:49,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 01:38:49,752 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 01:38:49,753 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 17 treesize of output 10 [2022-12-12 01:38:49,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:49,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:38:50,086 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-12 01:38:50,087 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 19 treesize of output 11 [2022-12-12 01:38:50,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:50,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756675692] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:38:50,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:38:50,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 23, 18] total 38 [2022-12-12 01:38:50,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800532021] [2022-12-12 01:38:50,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:38:50,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-12 01:38:50,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:50,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-12 01:38:50,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1261, Unknown=0, NotChecked=0, Total=1406 [2022-12-12 01:38:50,698 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 154 [2022-12-12 01:38:50,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 224 transitions, 1744 flow. Second operand has 38 states, 38 states have (on average 59.71052631578947) internal successors, (2269), 38 states have internal predecessors, (2269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:50,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:50,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 154 [2022-12-12 01:38:50,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:59,390 INFO L130 PetriNetUnfolder]: 6697/13834 cut-off events. [2022-12-12 01:38:59,390 INFO L131 PetriNetUnfolder]: For 35815/36437 co-relation queries the response was YES. [2022-12-12 01:38:59,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47305 conditions, 13834 events. 6697/13834 cut-off events. For 35815/36437 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 116035 event pairs, 385 based on Foata normal form. 75/12921 useless extension candidates. Maximal degree in co-relation 36504. Up to 2655 conditions per place. [2022-12-12 01:38:59,487 INFO L137 encePairwiseOnDemand]: 108/154 looper letters, 653 selfloop transitions, 275 changer transitions 458/1450 dead transitions. [2022-12-12 01:38:59,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 1450 transitions, 11797 flow [2022-12-12 01:38:59,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2022-12-12 01:38:59,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2022-12-12 01:38:59,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 10046 transitions. [2022-12-12 01:38:59,506 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3977668672790624 [2022-12-12 01:38:59,507 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 188 predicate places. [2022-12-12 01:38:59,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 1450 transitions, 11797 flow [2022-12-12 01:38:59,546 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 992 transitions, 8145 flow [2022-12-12 01:38:59,547 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 992 transitions, 8145 flow [2022-12-12 01:38:59,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 59.71052631578947) internal successors, (2269), 38 states have internal predecessors, (2269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:59,548 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:59,548 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:59,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-12 01:38:59,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:38:59,754 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:59,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:59,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1599550682, now seen corresponding path program 2 times [2022-12-12 01:38:59,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:59,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959101302] [2022-12-12 01:38:59,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:59,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:01,338 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:01,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:01,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959101302] [2022-12-12 01:39:01,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959101302] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:39:01,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392767655] [2022-12-12 01:39:01,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 01:39:01,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:39:01,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:39:01,340 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:39:01,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 01:39:01,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 01:39:01,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:39:01,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 58 conjunts are in the unsatisfiable core [2022-12-12 01:39:01,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:39:01,853 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 15 treesize of output 11 [2022-12-12 01:39:02,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-12 01:39:02,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-12 01:39:02,812 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-12 01:39:02,813 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 17 [2022-12-12 01:39:02,898 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:02,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:39:06,156 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 01:39:06,156 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 166 treesize of output 106 [2022-12-12 01:39:06,225 INFO L321 Elim1Store]: treesize reduction 5, result has 92.8 percent of original size [2022-12-12 01:39:06,226 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 592 treesize of output 575 [2022-12-12 01:39:06,251 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 01:39:06,273 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 01:39:06,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 304 treesize of output 292 [2022-12-12 01:39:06,329 INFO L321 Elim1Store]: treesize reduction 12, result has 85.9 percent of original size [2022-12-12 01:39:06,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 496 treesize of output 376 [2022-12-12 01:39:07,701 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:07,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392767655] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:39:07,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:39:07,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 30, 28] total 76 [2022-12-12 01:39:07,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662462230] [2022-12-12 01:39:07,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:39:07,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-12-12 01:39:07,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:07,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-12-12 01:39:07,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=712, Invalid=4959, Unknown=29, NotChecked=0, Total=5700 [2022-12-12 01:39:07,707 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 154 [2022-12-12 01:39:07,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 992 transitions, 8145 flow. Second operand has 76 states, 76 states have (on average 59.81578947368421) internal successors, (4546), 76 states have internal predecessors, (4546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:39:07,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:07,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 154 [2022-12-12 01:39:07,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:10,138 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (+ (* c_~x2~0 4) c_~f~0.offset)) (.cse3 (+ (* c_~x1~0 4) c_~f~0.offset))) (and (let ((.cse1 (select |c_#memory_int| c_~f~0.base))) (let ((.cse0 (select .cse1 .cse3))) (or (<= c_~size~0 .cse0) (< .cse0 0) (= (select .cse1 (+ c_~f~0.offset (* .cse0 4))) (select .cse1 (+ (* (select .cse1 .cse2) 4) c_~f~0.offset)))))) (forall ((v_ArrVal_182 (Array Int Int)) (v_ArrVal_181 (Array Int Int))) (let ((.cse4 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_181) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_182) c_~f~0.base))) (let ((.cse5 (select .cse4 .cse3))) (or (= (select .cse4 (+ c_~f~0.offset (* .cse5 4))) (select .cse4 (+ (* 4 (select .cse4 .cse2)) c_~f~0.offset))) (< .cse5 0) (<= c_~size~0 .cse5))))) (forall ((v_ArrVal_182 (Array Int Int))) (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_182) c_~f~0.base))) (let ((.cse6 (select .cse7 .cse3))) (or (< .cse6 0) (= (select .cse7 (+ c_~f~0.offset (* (select .cse7 .cse2) 4))) (select .cse7 (+ (* .cse6 4) c_~f~0.offset))) (<= c_~size~0 .cse6))))) (= c_~x1~0 0))) is different from false [2022-12-12 01:39:29,080 INFO L130 PetriNetUnfolder]: 12474/25817 cut-off events. [2022-12-12 01:39:29,080 INFO L131 PetriNetUnfolder]: For 67526/68575 co-relation queries the response was YES. [2022-12-12 01:39:29,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95783 conditions, 25817 events. 12474/25817 cut-off events. For 67526/68575 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 237764 event pairs, 1343 based on Foata normal form. 52/24428 useless extension candidates. Maximal degree in co-relation 71712. Up to 6038 conditions per place. [2022-12-12 01:39:29,217 INFO L137 encePairwiseOnDemand]: 113/154 looper letters, 1022 selfloop transitions, 359 changer transitions 140/2052 dead transitions. [2022-12-12 01:39:29,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 2052 transitions, 17066 flow [2022-12-12 01:39:29,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-12-12 01:39:29,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2022-12-12 01:39:29,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 8545 transitions. [2022-12-12 01:39:29,227 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4079927425515661 [2022-12-12 01:39:29,228 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 254 predicate places. [2022-12-12 01:39:29,228 INFO L82 GeneralOperation]: Start removeDead. Operand has 391 places, 2052 transitions, 17066 flow [2022-12-12 01:39:29,315 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 377 places, 1912 transitions, 15889 flow [2022-12-12 01:39:29,315 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 1912 transitions, 15889 flow [2022-12-12 01:39:29,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 59.81578947368421) internal successors, (4546), 76 states have internal predecessors, (4546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:39:29,317 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:29,318 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:29,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-12 01:39:29,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-12 01:39:29,524 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:29,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:29,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1684559436, now seen corresponding path program 3 times [2022-12-12 01:39:29,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:29,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214119510] [2022-12-12 01:39:29,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:29,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:30,882 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:30,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:30,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214119510] [2022-12-12 01:39:30,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214119510] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:39:30,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914460019] [2022-12-12 01:39:30,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 01:39:30,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:39:30,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:39:30,886 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:39:30,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 01:39:30,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-12 01:39:30,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:39:30,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-12 01:39:30,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:39:31,229 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 15 treesize of output 11 [2022-12-12 01:39:31,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-12 01:39:31,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-12 01:39:32,276 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-12 01:39:32,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-12-12 01:39:32,302 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 01:39:32,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:39:33,226 WARN L837 $PredicateComparison]: unable to prove that (forall ((~x1~0 Int) (~x2~0 Int) (v_ArrVal_210 (Array Int Int))) (or (< ~x1~0 0) (<= c_~size~0 ~x1~0) (< ~x2~0 0) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_210) c_~f~0.base))) (= (select .cse0 (+ (* ~x1~0 4) c_~f~0.offset)) (select .cse0 (+ c_~f~0.offset (* ~x2~0 4))))) (<= c_~size~0 ~x2~0))) is different from false [2022-12-12 01:39:33,285 WARN L837 $PredicateComparison]: unable to prove that (forall ((~x1~0 Int) (~x2~0 Int) (v_ArrVal_209 (Array Int Int)) (v_ArrVal_210 (Array Int Int))) (or (< ~x1~0 0) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_209) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_210) c_~f~0.base))) (= (select .cse0 (+ (* ~x1~0 4) c_~f~0.offset)) (select .cse0 (+ c_~f~0.offset (* ~x2~0 4))))) (<= c_~size~0 ~x1~0) (< ~x2~0 0) (<= c_~size~0 ~x2~0))) is different from false [2022-12-12 01:39:33,517 WARN L837 $PredicateComparison]: unable to prove that (forall ((~x1~0 Int) (~x2~0 Int) (v_ArrVal_209 (Array Int Int)) (v_ArrVal_210 (Array Int Int))) (or (< ~x1~0 0) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_209) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_210) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|))) (= (select .cse0 (+ (* ~x2~0 4) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) (select .cse0 (+ (* ~x1~0 4) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)))) (<= c_~size~0 ~x1~0) (< ~x2~0 0) (<= c_~size~0 ~x2~0))) is different from false [2022-12-12 01:39:33,536 WARN L837 $PredicateComparison]: unable to prove that (forall ((~x1~0 Int) (~x2~0 Int) (v_ArrVal_209 (Array Int Int)) (v_ArrVal_210 (Array Int Int))) (or (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_209) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_210) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (= (select .cse0 (+ (* ~x2~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse0 (+ (* ~x1~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (< ~x1~0 0) (<= c_~size~0 ~x1~0) (< ~x2~0 0) (<= c_~size~0 ~x2~0))) is different from false [2022-12-12 01:39:33,855 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 01:39:33,855 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 55 treesize of output 44 [2022-12-12 01:39:33,865 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-12 01:39:33,865 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 198 treesize of output 173 [2022-12-12 01:39:33,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 01:39:33,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 59 [2022-12-12 01:39:33,886 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-12 01:39:33,887 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 142 treesize of output 94 [2022-12-12 01:39:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 01:39:34,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914460019] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:39:34,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:39:34,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 26] total 72 [2022-12-12 01:39:34,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750820404] [2022-12-12 01:39:34,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:39:34,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-12-12 01:39:34,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:34,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-12-12 01:39:34,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=4114, Unknown=16, NotChecked=540, Total=5112 [2022-12-12 01:39:34,096 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 154 [2022-12-12 01:39:34,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 1912 transitions, 15889 flow. Second operand has 72 states, 72 states have (on average 55.125) internal successors, (3969), 72 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:39:34,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:34,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 154 [2022-12-12 01:39:34,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:12,286 INFO L130 PetriNetUnfolder]: 19642/38586 cut-off events. [2022-12-12 01:40:12,287 INFO L131 PetriNetUnfolder]: For 119595/121663 co-relation queries the response was YES. [2022-12-12 01:40:12,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168713 conditions, 38586 events. 19642/38586 cut-off events. For 119595/121663 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 359264 event pairs, 1345 based on Foata normal form. 192/37117 useless extension candidates. Maximal degree in co-relation 124835. Up to 12025 conditions per place. [2022-12-12 01:40:12,443 INFO L137 encePairwiseOnDemand]: 109/154 looper letters, 418 selfloop transitions, 33 changer transitions 4443/5045 dead transitions. [2022-12-12 01:40:12,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 5045 transitions, 46213 flow [2022-12-12 01:40:12,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2022-12-12 01:40:12,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2022-12-12 01:40:12,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 11551 transitions. [2022-12-12 01:40:12,454 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.36949011579553453 [2022-12-12 01:40:12,455 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 436 predicate places. [2022-12-12 01:40:12,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 573 places, 5045 transitions, 46213 flow [2022-12-12 01:40:12,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 251 places, 602 transitions, 6179 flow [2022-12-12 01:40:12,512 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 602 transitions, 6179 flow [2022-12-12 01:40:12,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 55.125) internal successors, (3969), 72 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:40:12,513 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:12,514 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:12,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-12 01:40:12,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:40:12,719 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:12,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:12,720 INFO L85 PathProgramCache]: Analyzing trace with hash -625463741, now seen corresponding path program 4 times [2022-12-12 01:40:12,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:12,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566704103] [2022-12-12 01:40:12,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:12,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:15,161 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:15,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:15,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566704103] [2022-12-12 01:40:15,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566704103] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:40:15,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571334219] [2022-12-12 01:40:15,162 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 01:40:15,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:40:15,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:40:15,163 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:40:15,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 01:40:15,239 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 01:40:15,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:40:15,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-12 01:40:15,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:40:16,328 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 01:40:16,328 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 28 [2022-12-12 01:40:16,351 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:16,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:40:16,795 INFO L321 Elim1Store]: treesize reduction 10, result has 85.5 percent of original size [2022-12-12 01:40:16,796 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 84 [2022-12-12 01:40:17,331 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:17,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571334219] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:40:17,331 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:40:17,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 25, 24] total 73 [2022-12-12 01:40:17,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083398276] [2022-12-12 01:40:17,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:40:17,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-12-12 01:40:17,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:17,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-12-12 01:40:17,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=732, Invalid=4524, Unknown=0, NotChecked=0, Total=5256 [2022-12-12 01:40:17,336 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 154 [2022-12-12 01:40:17,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 602 transitions, 6179 flow. Second operand has 73 states, 73 states have (on average 50.47945205479452) internal successors, (3685), 73 states have internal predecessors, (3685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:40:17,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:17,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 154 [2022-12-12 01:40:17,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:24,742 INFO L130 PetriNetUnfolder]: 9203/17989 cut-off events. [2022-12-12 01:40:24,743 INFO L131 PetriNetUnfolder]: For 71761/73042 co-relation queries the response was YES. [2022-12-12 01:40:24,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92508 conditions, 17989 events. 9203/17989 cut-off events. For 71761/73042 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 147405 event pairs, 937 based on Foata normal form. 52/17065 useless extension candidates. Maximal degree in co-relation 67176. Up to 9002 conditions per place. [2022-12-12 01:40:24,977 INFO L137 encePairwiseOnDemand]: 117/154 looper letters, 1015 selfloop transitions, 285 changer transitions 35/1481 dead transitions. [2022-12-12 01:40:24,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 1481 transitions, 16849 flow [2022-12-12 01:40:24,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-12-12 01:40:24,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2022-12-12 01:40:24,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 4820 transitions. [2022-12-12 01:40:24,998 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.35167080110900334 [2022-12-12 01:40:24,999 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 202 predicate places. [2022-12-12 01:40:24,999 INFO L82 GeneralOperation]: Start removeDead. Operand has 339 places, 1481 transitions, 16849 flow [2022-12-12 01:40:25,089 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 1446 transitions, 16455 flow [2022-12-12 01:40:25,089 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 1446 transitions, 16455 flow [2022-12-12 01:40:25,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 50.47945205479452) internal successors, (3685), 73 states have internal predecessors, (3685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:40:25,090 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:25,090 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:25,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-12 01:40:25,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:40:25,293 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:25,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:25,293 INFO L85 PathProgramCache]: Analyzing trace with hash -109664235, now seen corresponding path program 5 times [2022-12-12 01:40:25,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:25,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933422294] [2022-12-12 01:40:25,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:25,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:26,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:26,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933422294] [2022-12-12 01:40:26,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933422294] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:40:26,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075758686] [2022-12-12 01:40:26,479 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 01:40:26,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:40:26,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:40:26,497 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:40:26,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 01:40:26,614 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-12 01:40:26,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:40:26,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-12 01:40:26,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:40:27,325 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 01:40:27,325 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 20 [2022-12-12 01:40:27,352 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 01:40:27,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:40:27,562 INFO L321 Elim1Store]: treesize reduction 10, result has 85.5 percent of original size [2022-12-12 01:40:27,562 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 78 [2022-12-12 01:40:27,688 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 01:40:27,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075758686] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:40:27,688 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:40:27,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 21, 13] total 48 [2022-12-12 01:40:27,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799940572] [2022-12-12 01:40:27,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:40:27,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-12 01:40:27,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:27,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-12 01:40:27,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=2028, Unknown=0, NotChecked=0, Total=2256 [2022-12-12 01:40:27,691 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 154 [2022-12-12 01:40:27,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 1446 transitions, 16455 flow. Second operand has 48 states, 48 states have (on average 67.14583333333333) internal successors, (3223), 48 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) [2022-12-12 01:40:27,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:27,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 154 [2022-12-12 01:40:27,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:34,822 INFO L130 PetriNetUnfolder]: 12244/23883 cut-off events. [2022-12-12 01:40:34,823 INFO L131 PetriNetUnfolder]: For 120279/122063 co-relation queries the response was YES. [2022-12-12 01:40:34,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136792 conditions, 23883 events. 12244/23883 cut-off events. For 120279/122063 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 203755 event pairs, 1375 based on Foata normal form. 79/22641 useless extension candidates. Maximal degree in co-relation 102392. Up to 12992 conditions per place. [2022-12-12 01:40:35,004 INFO L137 encePairwiseOnDemand]: 121/154 looper letters, 1412 selfloop transitions, 334 changer transitions 38/2075 dead transitions. [2022-12-12 01:40:35,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 2075 transitions, 27127 flow [2022-12-12 01:40:35,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-12-12 01:40:35,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2022-12-12 01:40:35,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 6601 transitions. [2022-12-12 01:40:35,023 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4464962121212121 [2022-12-12 01:40:35,023 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 287 predicate places. [2022-12-12 01:40:35,023 INFO L82 GeneralOperation]: Start removeDead. Operand has 424 places, 2075 transitions, 27127 flow [2022-12-12 01:40:35,138 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 422 places, 2037 transitions, 26660 flow [2022-12-12 01:40:35,138 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 2037 transitions, 26660 flow [2022-12-12 01:40:35,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 67.14583333333333) internal successors, (3223), 48 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) [2022-12-12 01:40:35,139 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:35,139 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:35,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-12 01:40:35,344 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,SelfDestructingSolverStorable12 [2022-12-12 01:40:35,344 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:35,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:35,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1228741795, now seen corresponding path program 6 times [2022-12-12 01:40:35,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:35,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983338117] [2022-12-12 01:40:35,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:35,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:36,730 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:36,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:36,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983338117] [2022-12-12 01:40:36,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983338117] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:40:36,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720541360] [2022-12-12 01:40:36,731 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 01:40:36,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:40:36,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:40:36,733 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:40:36,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-12 01:40:36,967 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-12 01:40:36,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:40:36,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-12 01:40:36,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:40:37,558 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 01:40:37,558 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 20 [2022-12-12 01:40:37,583 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 01:40:37,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:40:37,778 INFO L321 Elim1Store]: treesize reduction 10, result has 85.5 percent of original size [2022-12-12 01:40:37,779 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 78 [2022-12-12 01:40:37,879 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 01:40:37,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720541360] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:40:37,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:40:37,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 21, 13] total 47 [2022-12-12 01:40:37,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189967601] [2022-12-12 01:40:37,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:40:37,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-12 01:40:37,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:37,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-12 01:40:37,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2022-12-12 01:40:37,882 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 154 [2022-12-12 01:40:37,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 2037 transitions, 26660 flow. Second operand has 47 states, 47 states have (on average 71.23404255319149) internal successors, (3348), 47 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:40:37,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:37,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 154 [2022-12-12 01:40:37,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:46,412 INFO L130 PetriNetUnfolder]: 14394/28090 cut-off events. [2022-12-12 01:40:46,412 INFO L131 PetriNetUnfolder]: For 175097/177543 co-relation queries the response was YES. [2022-12-12 01:40:46,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176767 conditions, 28090 events. 14394/28090 cut-off events. For 175097/177543 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 244032 event pairs, 1830 based on Foata normal form. 94/26565 useless extension candidates. Maximal degree in co-relation 136762. Up to 15875 conditions per place. [2022-12-12 01:40:46,618 INFO L137 encePairwiseOnDemand]: 121/154 looper letters, 1573 selfloop transitions, 328 changer transitions 11/2411 dead transitions. [2022-12-12 01:40:46,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 2411 transitions, 35196 flow [2022-12-12 01:40:46,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-12-12 01:40:46,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2022-12-12 01:40:46,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 6055 transitions. [2022-12-12 01:40:46,622 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.47371303395399783 [2022-12-12 01:40:46,623 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 367 predicate places. [2022-12-12 01:40:46,623 INFO L82 GeneralOperation]: Start removeDead. Operand has 504 places, 2411 transitions, 35196 flow [2022-12-12 01:40:46,766 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 501 places, 2400 transitions, 35027 flow [2022-12-12 01:40:46,766 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 2400 transitions, 35027 flow [2022-12-12 01:40:46,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 71.23404255319149) internal successors, (3348), 47 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:40:46,767 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:46,767 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:46,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-12 01:40:46,973 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 [2022-12-12 01:40:46,973 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:46,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:46,974 INFO L85 PathProgramCache]: Analyzing trace with hash -2024683741, now seen corresponding path program 7 times [2022-12-12 01:40:46,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:46,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505881517] [2022-12-12 01:40:46,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:46,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:48,083 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:48,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:48,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505881517] [2022-12-12 01:40:48,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505881517] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:40:48,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120596605] [2022-12-12 01:40:48,084 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 01:40:48,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:40:48,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:40:48,086 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:40:48,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-12 01:40:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:48,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-12 01:40:48,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:40:49,088 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 01:40:49,089 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 28 [2022-12-12 01:40:49,113 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:49,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:40:49,629 INFO L321 Elim1Store]: treesize reduction 10, result has 85.5 percent of original size [2022-12-12 01:40:49,630 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 90 [2022-12-12 01:40:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:50,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120596605] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:40:50,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:40:50,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 28, 27] total 65 [2022-12-12 01:40:50,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698290505] [2022-12-12 01:40:50,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:40:50,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-12-12 01:40:50,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:50,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-12-12 01:40:50,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=708, Invalid=3452, Unknown=0, NotChecked=0, Total=4160 [2022-12-12 01:40:50,140 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 154 [2022-12-12 01:40:50,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 2400 transitions, 35027 flow. Second operand has 65 states, 65 states have (on average 62.30769230769231) internal successors, (4050), 65 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:40:50,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:50,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 154 [2022-12-12 01:40:50,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:41:04,962 INFO L130 PetriNetUnfolder]: 19444/37953 cut-off events. [2022-12-12 01:41:04,962 INFO L131 PetriNetUnfolder]: For 287503/291297 co-relation queries the response was YES. [2022-12-12 01:41:05,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265629 conditions, 37953 events. 19444/37953 cut-off events. For 287503/291297 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 345257 event pairs, 2517 based on Foata normal form. 141/35724 useless extension candidates. Maximal degree in co-relation 192040. Up to 22356 conditions per place. [2022-12-12 01:41:05,341 INFO L137 encePairwiseOnDemand]: 116/154 looper letters, 2576 selfloop transitions, 554 changer transitions 135/3425 dead transitions. [2022-12-12 01:41:05,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 3425 transitions, 56818 flow [2022-12-12 01:41:05,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-12-12 01:41:05,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2022-12-12 01:41:05,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 6495 transitions. [2022-12-12 01:41:05,349 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.43036045587065996 [2022-12-12 01:41:05,349 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 461 predicate places. [2022-12-12 01:41:05,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 598 places, 3425 transitions, 56818 flow [2022-12-12 01:41:05,551 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 587 places, 3290 transitions, 54572 flow [2022-12-12 01:41:05,551 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 3290 transitions, 54572 flow [2022-12-12 01:41:05,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 62.30769230769231) internal successors, (4050), 65 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:41:05,553 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:41:05,553 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:41:05,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-12 01:41:05,757 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 [2022-12-12 01:41:05,758 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:41:05,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:41:05,758 INFO L85 PathProgramCache]: Analyzing trace with hash 959173231, now seen corresponding path program 8 times [2022-12-12 01:41:05,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:41:05,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774670079] [2022-12-12 01:41:05,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:41:05,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:41:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:41:06,743 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:41:06,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:41:06,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774670079] [2022-12-12 01:41:06,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774670079] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:41:06,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102027161] [2022-12-12 01:41:06,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 01:41:06,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:41:06,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:41:06,745 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:41:06,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-12 01:41:06,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 01:41:06,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:41:06,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 45 conjunts are in the unsatisfiable core [2022-12-12 01:41:06,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:41:07,666 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 01:41:07,666 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 28 [2022-12-12 01:41:07,693 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:41:07,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:41:08,046 INFO L321 Elim1Store]: treesize reduction 10, result has 85.5 percent of original size [2022-12-12 01:41:08,047 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 84 [2022-12-12 01:41:08,562 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:41:08,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102027161] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:41:08,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:41:08,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25, 24] total 60 [2022-12-12 01:41:08,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036928747] [2022-12-12 01:41:08,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:41:08,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-12-12 01:41:08,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:41:08,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-12-12 01:41:08,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=558, Invalid=2982, Unknown=0, NotChecked=0, Total=3540 [2022-12-12 01:41:08,567 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 154 [2022-12-12 01:41:08,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 3290 transitions, 54572 flow. Second operand has 60 states, 60 states have (on average 62.516666666666666) internal successors, (3751), 60 states have internal predecessors, (3751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:41:08,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:41:08,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 154 [2022-12-12 01:41:08,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:41:28,995 INFO L130 PetriNetUnfolder]: 23647/46311 cut-off events. [2022-12-12 01:41:28,996 INFO L131 PetriNetUnfolder]: For 422759/427183 co-relation queries the response was YES. [2022-12-12 01:41:29,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356331 conditions, 46311 events. 23647/46311 cut-off events. For 422759/427183 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 434666 event pairs, 3011 based on Foata normal form. 131/43469 useless extension candidates. Maximal degree in co-relation 253488. Up to 28178 conditions per place. [2022-12-12 01:41:29,431 INFO L137 encePairwiseOnDemand]: 119/154 looper letters, 3256 selfloop transitions, 692 changer transitions 34/4142 dead transitions. [2022-12-12 01:41:29,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 4142 transitions, 76669 flow [2022-12-12 01:41:29,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-12-12 01:41:29,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2022-12-12 01:41:29,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 5682 transitions. [2022-12-12 01:41:29,435 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4290244639081848 [2022-12-12 01:41:29,435 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 535 predicate places. [2022-12-12 01:41:29,435 INFO L82 GeneralOperation]: Start removeDead. Operand has 672 places, 4142 transitions, 76669 flow [2022-12-12 01:41:29,726 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 666 places, 4108 transitions, 76043 flow [2022-12-12 01:41:29,726 INFO L495 AbstractCegarLoop]: Abstraction has has 666 places, 4108 transitions, 76043 flow [2022-12-12 01:41:29,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 62.516666666666666) internal successors, (3751), 60 states have internal predecessors, (3751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:41:29,728 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:41:29,728 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:41:29,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-12 01:41:29,933 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 [2022-12-12 01:41:29,934 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:41:29,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:41:29,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1678059073, now seen corresponding path program 9 times [2022-12-12 01:41:29,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:41:29,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677944751] [2022-12-12 01:41:29,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:41:29,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:41:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:41:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:41:32,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:41:32,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677944751] [2022-12-12 01:41:32,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677944751] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:41:32,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535546950] [2022-12-12 01:41:32,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 01:41:32,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:41:32,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:41:32,080 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:41:32,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-12 01:41:32,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-12 01:41:32,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:41:32,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-12 01:41:32,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:41:32,888 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 01:41:32,888 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 20 [2022-12-12 01:41:32,913 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 01:41:32,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:41:33,121 INFO L321 Elim1Store]: treesize reduction 10, result has 85.5 percent of original size [2022-12-12 01:41:33,121 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 78 [2022-12-12 01:41:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-12 01:41:33,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535546950] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:41:33,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:41:33,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 21, 13] total 53 [2022-12-12 01:41:33,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156623335] [2022-12-12 01:41:33,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:41:33,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-12 01:41:33,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:41:33,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-12 01:41:33,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=2472, Unknown=0, NotChecked=0, Total=2756 [2022-12-12 01:41:33,250 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 154 [2022-12-12 01:41:33,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 666 places, 4108 transitions, 76043 flow. Second operand has 53 states, 53 states have (on average 57.0377358490566) internal successors, (3023), 53 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:41:33,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:41:33,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 154 [2022-12-12 01:41:33,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:41:59,981 INFO L130 PetriNetUnfolder]: 26906/52742 cut-off events. [2022-12-12 01:41:59,981 INFO L131 PetriNetUnfolder]: For 588832/594152 co-relation queries the response was YES. [2022-12-12 01:42:00,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436948 conditions, 52742 events. 26906/52742 cut-off events. For 588832/594152 co-relation queries the response was YES. Maximal size of possible extension queue 904. Compared 503635 event pairs, 3470 based on Foata normal form. 119/49466 useless extension candidates. Maximal degree in co-relation 320502. Up to 32424 conditions per place. [2022-12-12 01:42:00,555 INFO L137 encePairwiseOnDemand]: 120/154 looper letters, 3362 selfloop transitions, 689 changer transitions 24/4660 dead transitions. [2022-12-12 01:42:00,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 750 places, 4660 transitions, 95124 flow [2022-12-12 01:42:00,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-12-12 01:42:00,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2022-12-12 01:42:00,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 5009 transitions. [2022-12-12 01:42:00,560 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3826585179526356 [2022-12-12 01:42:00,566 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 613 predicate places. [2022-12-12 01:42:00,566 INFO L82 GeneralOperation]: Start removeDead. Operand has 750 places, 4660 transitions, 95124 flow [2022-12-12 01:42:00,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 748 places, 4636 transitions, 94594 flow [2022-12-12 01:42:00,946 INFO L495 AbstractCegarLoop]: Abstraction has has 748 places, 4636 transitions, 94594 flow [2022-12-12 01:42:00,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 57.0377358490566) internal successors, (3023), 53 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:42:00,946 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:42:00,946 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:42:00,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-12 01:42:01,153 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 [2022-12-12 01:42:01,154 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:42:01,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:42:01,155 INFO L85 PathProgramCache]: Analyzing trace with hash -2014165387, now seen corresponding path program 10 times [2022-12-12 01:42:01,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:42:01,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633501701] [2022-12-12 01:42:01,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:42:01,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:42:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:42:02,209 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:42:02,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:42:02,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633501701] [2022-12-12 01:42:02,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633501701] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:42:02,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128944722] [2022-12-12 01:42:02,210 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 01:42:02,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:42:02,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:42:02,211 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:42:02,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-12 01:42:02,296 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 01:42:02,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:42:02,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-12 01:42:02,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:42:03,279 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 01:42:03,280 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 28 [2022-12-12 01:42:03,304 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:42:03,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:42:03,711 INFO L321 Elim1Store]: treesize reduction 10, result has 85.5 percent of original size [2022-12-12 01:42:03,711 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 84 [2022-12-12 01:42:04,358 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:42:04,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128944722] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:42:04,359 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:42:04,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25, 24] total 62 [2022-12-12 01:42:04,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852953088] [2022-12-12 01:42:04,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:42:04,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-12-12 01:42:04,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:42:04,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-12-12 01:42:04,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=3340, Unknown=0, NotChecked=0, Total=3782 [2022-12-12 01:42:04,363 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 154 [2022-12-12 01:42:04,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 748 places, 4636 transitions, 94594 flow. Second operand has 62 states, 62 states have (on average 62.46774193548387) internal successors, (3873), 62 states have internal predecessors, (3873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:42:04,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:42:04,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 154 [2022-12-12 01:42:04,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:42:42,434 INFO L130 PetriNetUnfolder]: 29964/58847 cut-off events. [2022-12-12 01:42:42,435 INFO L131 PetriNetUnfolder]: For 776293/782136 co-relation queries the response was YES. [2022-12-12 01:42:42,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527739 conditions, 58847 events. 29964/58847 cut-off events. For 776293/782136 co-relation queries the response was YES. Maximal size of possible extension queue 1026. Compared 573716 event pairs, 3767 based on Foata normal form. 140/55171 useless extension candidates. Maximal degree in co-relation 384721. Up to 36284 conditions per place. [2022-12-12 01:42:43,008 INFO L137 encePairwiseOnDemand]: 119/154 looper letters, 4690 selfloop transitions, 311 changer transitions 25/5186 dead transitions. [2022-12-12 01:42:43,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 825 places, 5186 transitions, 116236 flow [2022-12-12 01:42:43,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-12-12 01:42:43,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2022-12-12 01:42:43,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 5203 transitions. [2022-12-12 01:42:43,015 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.43315018315018317 [2022-12-12 01:42:43,016 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 688 predicate places. [2022-12-12 01:42:43,016 INFO L82 GeneralOperation]: Start removeDead. Operand has 825 places, 5186 transitions, 116236 flow [2022-12-12 01:42:43,429 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 819 places, 5161 transitions, 115703 flow [2022-12-12 01:42:43,429 INFO L495 AbstractCegarLoop]: Abstraction has has 819 places, 5161 transitions, 115703 flow [2022-12-12 01:42:43,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 62.46774193548387) internal successors, (3873), 62 states have internal predecessors, (3873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:42:43,430 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:42:43,431 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:42:43,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-12 01:42:43,635 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 [2022-12-12 01:42:43,636 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:42:43,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:42:43,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1508736143, now seen corresponding path program 11 times [2022-12-12 01:42:43,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:42:43,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718158638] [2022-12-12 01:42:43,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:42:43,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:42:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:42:44,851 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:42:44,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:42:44,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718158638] [2022-12-12 01:42:44,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718158638] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:42:44,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732299115] [2022-12-12 01:42:44,852 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 01:42:44,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:42:44,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:42:44,859 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:42:44,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-12 01:42:45,002 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-12 01:42:45,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:42:45,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-12 01:42:45,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:42:45,677 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 01:42:45,678 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 20 [2022-12-12 01:42:45,700 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 01:42:45,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:42:45,946 INFO L321 Elim1Store]: treesize reduction 10, result has 85.5 percent of original size [2022-12-12 01:42:45,946 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 78 [2022-12-12 01:42:46,063 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-12 01:42:46,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732299115] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:42:46,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:42:46,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 21, 13] total 49 [2022-12-12 01:42:46,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565281425] [2022-12-12 01:42:46,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:42:46,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-12 01:42:46,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:42:46,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-12 01:42:46,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2143, Unknown=0, NotChecked=0, Total=2352 [2022-12-12 01:42:46,066 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 154 [2022-12-12 01:42:46,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 819 places, 5161 transitions, 115703 flow. Second operand has 49 states, 49 states have (on average 67.14285714285714) internal successors, (3290), 49 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:42:46,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:42:46,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 154 [2022-12-12 01:42:46,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:43:28,659 INFO L130 PetriNetUnfolder]: 32344/63717 cut-off events. [2022-12-12 01:43:28,659 INFO L131 PetriNetUnfolder]: For 989126/995765 co-relation queries the response was YES. [2022-12-12 01:43:28,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608315 conditions, 63717 events. 32344/63717 cut-off events. For 989126/995765 co-relation queries the response was YES. Maximal size of possible extension queue 1106. Compared 630101 event pairs, 4368 based on Foata normal form. 95/59721 useless extension candidates. Maximal degree in co-relation 446836. Up to 39476 conditions per place. [2022-12-12 01:43:29,291 INFO L137 encePairwiseOnDemand]: 122/154 looper letters, 4669 selfloop transitions, 356 changer transitions 29/5693 dead transitions. [2022-12-12 01:43:29,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 926 places, 5693 transitions, 138182 flow [2022-12-12 01:43:29,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-12-12 01:43:29,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2022-12-12 01:43:29,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 7449 transitions. [2022-12-12 01:43:29,302 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.44787157287157287 [2022-12-12 01:43:29,304 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 789 predicate places. [2022-12-12 01:43:29,304 INFO L82 GeneralOperation]: Start removeDead. Operand has 926 places, 5693 transitions, 138182 flow [2022-12-12 01:43:29,762 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 924 places, 5664 transitions, 137471 flow [2022-12-12 01:43:29,763 INFO L495 AbstractCegarLoop]: Abstraction has has 924 places, 5664 transitions, 137471 flow [2022-12-12 01:43:29,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 67.14285714285714) internal successors, (3290), 49 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:43:29,763 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:43:29,764 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:43:29,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-12 01:43:29,969 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 [2022-12-12 01:43:29,969 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:43:29,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:43:29,969 INFO L85 PathProgramCache]: Analyzing trace with hash 307506135, now seen corresponding path program 12 times [2022-12-12 01:43:29,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:43:29,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847050795] [2022-12-12 01:43:29,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:43:29,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:43:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:43:31,019 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:43:31,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:43:31,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847050795] [2022-12-12 01:43:31,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847050795] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:43:31,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911356098] [2022-12-12 01:43:31,020 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 01:43:31,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:43:31,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:43:31,021 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:43:31,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-12 01:43:31,242 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-12 01:43:31,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:43:31,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 49 conjunts are in the unsatisfiable core [2022-12-12 01:43:31,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:43:32,068 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 01:43:32,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 46 [2022-12-12 01:43:32,136 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:43:32,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:43:32,390 INFO L321 Elim1Store]: treesize reduction 10, result has 85.5 percent of original size [2022-12-12 01:43:32,391 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 84 [2022-12-12 01:43:32,814 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:43:32,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911356098] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:43:32,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:43:32,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 24] total 57 [2022-12-12 01:43:32,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385966795] [2022-12-12 01:43:32,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:43:32,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-12-12 01:43:32,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:43:32,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-12-12 01:43:32,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=2759, Unknown=0, NotChecked=0, Total=3192 [2022-12-12 01:43:32,817 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 154 [2022-12-12 01:43:32,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 924 places, 5664 transitions, 137471 flow. Second operand has 57 states, 57 states have (on average 69.96491228070175) internal successors, (3988), 57 states have internal predecessors, (3988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:43:32,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:43:32,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 154 [2022-12-12 01:43:32,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:44:27,483 INFO L130 PetriNetUnfolder]: 34031/66944 cut-off events. [2022-12-12 01:44:27,483 INFO L131 PetriNetUnfolder]: For 1205828/1213480 co-relation queries the response was YES. [2022-12-12 01:44:27,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679246 conditions, 66944 events. 34031/66944 cut-off events. For 1205828/1213480 co-relation queries the response was YES. Maximal size of possible extension queue 1175. Compared 666706 event pairs, 4526 based on Foata normal form. 172/62772 useless extension candidates. Maximal degree in co-relation 501484. Up to 41806 conditions per place. [2022-12-12 01:44:28,183 INFO L137 encePairwiseOnDemand]: 119/154 looper letters, 4537 selfloop transitions, 347 changer transitions 14/5901 dead transitions. [2022-12-12 01:44:28,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 991 places, 5901 transitions, 153308 flow [2022-12-12 01:44:28,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-12 01:44:28,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2022-12-12 01:44:28,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 4962 transitions. [2022-12-12 01:44:28,186 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4738349885408709 [2022-12-12 01:44:28,187 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 854 predicate places. [2022-12-12 01:44:28,187 INFO L82 GeneralOperation]: Start removeDead. Operand has 991 places, 5901 transitions, 153308 flow [2022-12-12 01:44:28,673 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 987 places, 5887 transitions, 152945 flow [2022-12-12 01:44:28,673 INFO L495 AbstractCegarLoop]: Abstraction has has 987 places, 5887 transitions, 152945 flow [2022-12-12 01:44:28,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 69.96491228070175) internal successors, (3988), 57 states have internal predecessors, (3988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:44:28,674 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:44:28,674 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:44:28,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-12 01:44:28,876 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 [2022-12-12 01:44:28,876 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:44:28,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:44:28,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1123064313, now seen corresponding path program 13 times [2022-12-12 01:44:28,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:44:28,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738256596] [2022-12-12 01:44:28,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:44:28,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:44:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:44:30,174 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:44:30,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:44:30,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738256596] [2022-12-12 01:44:30,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738256596] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:44:30,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512094689] [2022-12-12 01:44:30,175 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 01:44:30,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:44:30,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:44:30,176 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) [2022-12-12 01:44:30,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-12 01:44:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:44:30,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 54 conjunts are in the unsatisfiable core [2022-12-12 01:44:30,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:44:31,280 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 01:44:31,281 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 26 [2022-12-12 01:44:31,307 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:44:31,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:44:31,787 INFO L321 Elim1Store]: treesize reduction 10, result has 85.5 percent of original size [2022-12-12 01:44:31,787 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 90 [2022-12-12 01:44:32,254 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:44:32,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512094689] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:44:32,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:44:32,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 27] total 65 [2022-12-12 01:44:32,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001738192] [2022-12-12 01:44:32,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:44:32,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-12-12 01:44:32,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:44:32,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-12-12 01:44:32,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=3677, Unknown=0, NotChecked=0, Total=4160 [2022-12-12 01:44:32,258 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 154 [2022-12-12 01:44:32,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 987 places, 5887 transitions, 152945 flow. Second operand has 65 states, 65 states have (on average 61.784615384615385) internal successors, (4016), 65 states have internal predecessors, (4016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:44:32,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:44:32,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 154 [2022-12-12 01:44:32,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:45:41,301 INFO L130 PetriNetUnfolder]: 35195/69253 cut-off events. [2022-12-12 01:45:41,301 INFO L131 PetriNetUnfolder]: For 1409578/1417616 co-relation queries the response was YES. [2022-12-12 01:45:41,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750664 conditions, 69253 events. 35195/69253 cut-off events. For 1409578/1417616 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 694182 event pairs, 4905 based on Foata normal form. 144/64903 useless extension candidates. Maximal degree in co-relation 557809. Up to 43331 conditions per place. [2022-12-12 01:45:42,026 INFO L137 encePairwiseOnDemand]: 116/154 looper letters, 5624 selfloop transitions, 405 changer transitions 6/6195 dead transitions. [2022-12-12 01:45:42,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1061 places, 6195 transitions, 172935 flow [2022-12-12 01:45:42,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-12-12 01:45:42,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2022-12-12 01:45:42,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 4903 transitions. [2022-12-12 01:45:42,030 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4245021645021645 [2022-12-12 01:45:42,031 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 924 predicate places. [2022-12-12 01:45:42,031 INFO L82 GeneralOperation]: Start removeDead. Operand has 1061 places, 6195 transitions, 172935 flow [2022-12-12 01:45:42,544 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1059 places, 6189 transitions, 172744 flow [2022-12-12 01:45:42,544 INFO L495 AbstractCegarLoop]: Abstraction has has 1059 places, 6189 transitions, 172744 flow [2022-12-12 01:45:42,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 61.784615384615385) internal successors, (4016), 65 states have internal predecessors, (4016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:45:42,545 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:45:42,545 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:45:42,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-12 01:45:42,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:45:42,751 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:45:42,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:45:42,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1938903557, now seen corresponding path program 14 times [2022-12-12 01:45:42,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:45:42,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682177052] [2022-12-12 01:45:42,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:45:42,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:45:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:45:43,772 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:45:43,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:45:43,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682177052] [2022-12-12 01:45:43,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682177052] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:45:43,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542157140] [2022-12-12 01:45:43,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 01:45:43,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:45:43,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:45:43,789 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) [2022-12-12 01:45:43,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-12 01:45:44,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 01:45:44,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:45:44,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 45 conjunts are in the unsatisfiable core [2022-12-12 01:45:44,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:45:44,764 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 01:45:44,764 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 28 [2022-12-12 01:45:44,787 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:45:44,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:45:45,119 INFO L321 Elim1Store]: treesize reduction 10, result has 85.5 percent of original size [2022-12-12 01:45:45,119 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 84 [2022-12-12 01:45:45,577 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:45:45,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542157140] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:45:45,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:45:45,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25, 24] total 60 [2022-12-12 01:45:45,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012758284] [2022-12-12 01:45:45,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:45:45,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-12-12 01:45:45,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:45:45,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-12-12 01:45:45,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=426, Invalid=3114, Unknown=0, NotChecked=0, Total=3540 [2022-12-12 01:45:45,581 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 154 [2022-12-12 01:45:45,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1059 places, 6189 transitions, 172744 flow. Second operand has 60 states, 60 states have (on average 62.516666666666666) internal successors, (3751), 60 states have internal predecessors, (3751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:45:45,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:45:45,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 154 [2022-12-12 01:45:45,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:47:07,826 INFO L130 PetriNetUnfolder]: 36456/71851 cut-off events. [2022-12-12 01:47:07,827 INFO L131 PetriNetUnfolder]: For 1651619/1660382 co-relation queries the response was YES. [2022-12-12 01:47:08,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 827447 conditions, 71851 events. 36456/71851 cut-off events. For 1651619/1660382 co-relation queries the response was YES. Maximal size of possible extension queue 1320. Compared 725056 event pairs, 4938 based on Foata normal form. 169/67352 useless extension candidates. Maximal degree in co-relation 614526. Up to 44942 conditions per place. [2022-12-12 01:47:08,651 INFO L137 encePairwiseOnDemand]: 119/154 looper letters, 5888 selfloop transitions, 416 changer transitions 16/6480 dead transitions. [2022-12-12 01:47:08,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1132 places, 6480 transitions, 193338 flow [2022-12-12 01:47:08,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-12-12 01:47:08,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2022-12-12 01:47:08,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 4860 transitions. [2022-12-12 01:47:08,655 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.42646542646542646 [2022-12-12 01:47:08,655 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 995 predicate places. [2022-12-12 01:47:08,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 1132 places, 6480 transitions, 193338 flow [2022-12-12 01:47:09,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1128 places, 6464 transitions, 192859 flow [2022-12-12 01:47:09,366 INFO L495 AbstractCegarLoop]: Abstraction has has 1128 places, 6464 transitions, 192859 flow [2022-12-12 01:47:09,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 62.516666666666666) internal successors, (3751), 60 states have internal predecessors, (3751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:47:09,367 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:47:09,367 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:47:09,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-12 01:47:09,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:47:09,572 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:47:09,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:47:09,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1856350053, now seen corresponding path program 15 times [2022-12-12 01:47:09,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:47:09,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514631781] [2022-12-12 01:47:09,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:47:09,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:47:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:47:11,285 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:47:11,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:47:11,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514631781] [2022-12-12 01:47:11,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514631781] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:47:11,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393701668] [2022-12-12 01:47:11,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 01:47:11,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:47:11,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:47:11,289 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) [2022-12-12 01:47:11,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-12 01:47:11,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-12 01:47:11,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:47:11,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-12 01:47:11,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:47:12,012 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 01:47:12,013 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 20 [2022-12-12 01:47:12,034 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 01:47:12,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:47:12,267 INFO L321 Elim1Store]: treesize reduction 10, result has 85.5 percent of original size [2022-12-12 01:47:12,268 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 78 [2022-12-12 01:47:12,384 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-12 01:47:12,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393701668] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:47:12,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:47:12,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 19, 13] total 55 [2022-12-12 01:47:12,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751628130] [2022-12-12 01:47:12,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:47:12,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-12-12 01:47:12,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:47:12,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-12-12 01:47:12,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=2712, Unknown=0, NotChecked=0, Total=2970 [2022-12-12 01:47:12,387 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 154 [2022-12-12 01:47:12,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1128 places, 6464 transitions, 192859 flow. Second operand has 55 states, 55 states have (on average 64.56363636363636) internal successors, (3551), 55 states have internal predecessors, (3551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:47:12,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:47:12,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 154 [2022-12-12 01:47:12,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:48:49,857 INFO L130 PetriNetUnfolder]: 43186/85062 cut-off events. [2022-12-12 01:48:49,857 INFO L131 PetriNetUnfolder]: For 2241896/2253682 co-relation queries the response was YES. [2022-12-12 01:48:50,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020888 conditions, 85062 events. 43186/85062 cut-off events. For 2241896/2253682 co-relation queries the response was YES. Maximal size of possible extension queue 1591. Compared 884113 event pairs, 6329 based on Foata normal form. 178/79554 useless extension candidates. Maximal degree in co-relation 745566. Up to 53670 conditions per place. [2022-12-12 01:48:50,882 INFO L137 encePairwiseOnDemand]: 116/154 looper letters, 4930 selfloop transitions, 842 changer transitions 36/7472 dead transitions. [2022-12-12 01:48:50,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1207 places, 7472 transitions, 237380 flow [2022-12-12 01:48:50,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-12-12 01:48:50,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-12-12 01:48:50,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 5275 transitions. [2022-12-12 01:48:50,891 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4281655844155844 [2022-12-12 01:48:50,891 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 1070 predicate places. [2022-12-12 01:48:50,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 1207 places, 7472 transitions, 237380 flow [2022-12-12 01:48:51,601 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1205 places, 7436 transitions, 236135 flow [2022-12-12 01:48:51,601 INFO L495 AbstractCegarLoop]: Abstraction has has 1205 places, 7436 transitions, 236135 flow [2022-12-12 01:48:51,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 64.56363636363636) internal successors, (3551), 55 states have internal predecessors, (3551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:48:51,602 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:48:51,602 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:48:51,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-12-12 01:48:51,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:48:51,807 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:48:51,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:48:51,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1237599759, now seen corresponding path program 16 times [2022-12-12 01:48:51,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:48:51,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76394971] [2022-12-12 01:48:51,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:48:51,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:48:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:48:52,946 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:48:52,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:48:52,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76394971] [2022-12-12 01:48:52,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76394971] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:48:52,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064038283] [2022-12-12 01:48:52,946 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 01:48:52,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:48:52,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:48:52,947 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) [2022-12-12 01:48:52,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-12 01:48:53,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 01:48:53,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:48:53,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-12 01:48:53,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:48:53,805 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 01:48:53,805 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 28 [2022-12-12 01:48:53,830 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:48:53,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:48:54,188 INFO L321 Elim1Store]: treesize reduction 10, result has 85.5 percent of original size [2022-12-12 01:48:54,188 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 84 [2022-12-12 01:48:54,706 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:48:54,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064038283] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:48:54,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:48:54,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25, 24] total 60 [2022-12-12 01:48:54,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778675317] [2022-12-12 01:48:54,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:48:54,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-12-12 01:48:54,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:48:54,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-12-12 01:48:54,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=3107, Unknown=0, NotChecked=0, Total=3540 [2022-12-12 01:48:54,710 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 154 [2022-12-12 01:48:54,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1205 places, 7436 transitions, 236135 flow. Second operand has 60 states, 60 states have (on average 70.21666666666667) internal successors, (4213), 60 states have internal predecessors, (4213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:48:54,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:48:54,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 154 [2022-12-12 01:48:54,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:51:14,551 INFO L130 PetriNetUnfolder]: 46836/92203 cut-off events. [2022-12-12 01:51:14,551 INFO L131 PetriNetUnfolder]: For 2727273/2740474 co-relation queries the response was YES. [2022-12-12 01:51:14,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1162059 conditions, 92203 events. 46836/92203 cut-off events. For 2727273/2740474 co-relation queries the response was YES. Maximal size of possible extension queue 1697. Compared 970830 event pairs, 7037 based on Foata normal form. 227/86286 useless extension candidates. Maximal degree in co-relation 856883. Up to 58636 conditions per place. [2022-12-12 01:51:15,607 INFO L137 encePairwiseOnDemand]: 119/154 looper letters, 6414 selfloop transitions, 532 changer transitions 8/8077 dead transitions. [2022-12-12 01:51:15,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1289 places, 8077 transitions, 271414 flow [2022-12-12 01:51:15,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-12-12 01:51:15,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2022-12-12 01:51:15,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 6128 transitions. [2022-12-12 01:51:15,615 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.46814362108479757 [2022-12-12 01:51:15,615 INFO L295 CegarLoopForPetriNet]: 137 programPoint places, 1152 predicate places. [2022-12-12 01:51:15,615 INFO L82 GeneralOperation]: Start removeDead. Operand has 1289 places, 8077 transitions, 271414 flow [2022-12-12 01:51:16,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1286 places, 8069 transitions, 271131 flow [2022-12-12 01:51:16,397 INFO L495 AbstractCegarLoop]: Abstraction has has 1286 places, 8069 transitions, 271131 flow [2022-12-12 01:51:16,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 70.21666666666667) internal successors, (4213), 60 states have internal predecessors, (4213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:51:16,398 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:51:16,398 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:51:16,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-12-12 01:51:16,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:51:16,603 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:51:16,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:51:16,603 INFO L85 PathProgramCache]: Analyzing trace with hash 16229799, now seen corresponding path program 17 times [2022-12-12 01:51:16,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:51:16,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986347518] [2022-12-12 01:51:16,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:51:16,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:51:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:51:18,071 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:51:18,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:51:18,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986347518] [2022-12-12 01:51:18,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986347518] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:51:18,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33608430] [2022-12-12 01:51:18,071 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 01:51:18,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:51:18,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:51:18,073 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:51:18,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-12 01:51:18,161 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-12 01:51:18,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:51:18,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-12 01:51:18,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:51:18,856 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 01:51:18,856 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 20 [2022-12-12 01:51:18,880 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 01:51:18,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:51:19,118 INFO L321 Elim1Store]: treesize reduction 10, result has 85.5 percent of original size [2022-12-12 01:51:19,118 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 78 [2022-12-12 01:51:19,283 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-12 01:51:19,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33608430] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:51:19,284 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:51:19,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 21, 13] total 54 [2022-12-12 01:51:19,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493606573] [2022-12-12 01:51:19,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:51:19,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-12-12 01:51:19,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:51:19,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-12-12 01:51:19,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=2610, Unknown=0, NotChecked=0, Total=2862 [2022-12-12 01:51:19,286 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 154 [2022-12-12 01:51:19,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1286 places, 8069 transitions, 271131 flow. Second operand has 54 states, 54 states have (on average 59.98148148148148) internal successors, (3239), 54 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:51:19,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:51:19,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 154 [2022-12-12 01:51:19,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-12 01:52:15,555 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 01:52:15,605 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 01:52:15,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-12-12 01:52:15,696 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 01:52:15,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-12-12 01:52:15,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-12 01:52:15,901 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (54states, 56/154 universal loopers) in iteration 25,while PetriNetUnfolder was constructing finite prefix that currently has 515814 conditions, 39957 events (19915/39956 cut-off events. For 1412074/1419201 co-relation queries the response was YES. Maximal size of possible extension queue 2179. Compared 438030 event pairs, 2790 based on Foata normal form. 267/39687 useless extension candidates. Maximal degree in co-relation 385208. Up to 23132 conditions per place.). [2022-12-12 01:52:15,902 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 01:52:15,902 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 01:52:15,903 INFO L445 BasicCegarLoop]: Path program histogram: [17, 3, 3, 1, 1] [2022-12-12 01:52:15,914 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 01:52:15,914 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 01:52:15,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 01:52:15 BasicIcfg [2022-12-12 01:52:15,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 01:52:15,933 INFO L158 Benchmark]: Toolchain (without parser) took 812415.91ms. Allocated memory was 179.3MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 156.1MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2022-12-12 01:52:15,933 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 179.3MB. Free memory was 155.3MB in the beginning and 155.2MB in the end (delta: 169.0kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 01:52:15,933 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.11ms. Allocated memory is still 179.3MB. Free memory was 156.1MB in the beginning and 144.7MB in the end (delta: 11.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-12 01:52:15,934 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.61ms. Allocated memory is still 179.3MB. Free memory was 144.7MB in the beginning and 142.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 01:52:15,935 INFO L158 Benchmark]: Boogie Preprocessor took 37.96ms. Allocated memory is still 179.3MB. Free memory was 142.6MB in the beginning and 141.4MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 01:52:15,936 INFO L158 Benchmark]: RCFGBuilder took 412.48ms. Allocated memory is still 179.3MB. Free memory was 141.0MB in the beginning and 125.7MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-12 01:52:15,936 INFO L158 Benchmark]: TraceAbstraction took 811702.21ms. Allocated memory was 179.3MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 124.2MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2022-12-12 01:52:15,937 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 179.3MB. Free memory was 155.3MB in the beginning and 155.2MB in the end (delta: 169.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 219.11ms. Allocated memory is still 179.3MB. Free memory was 156.1MB in the beginning and 144.7MB in the end (delta: 11.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.61ms. Allocated memory is still 179.3MB. Free memory was 144.7MB in the beginning and 142.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.96ms. Allocated memory is still 179.3MB. Free memory was 142.6MB in the beginning and 141.4MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 412.48ms. Allocated memory is still 179.3MB. Free memory was 141.0MB in the beginning and 125.7MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 811702.21ms. Allocated memory was 179.3MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 124.2MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (54states, 56/154 universal loopers) in iteration 25,while PetriNetUnfolder was constructing finite prefix that currently has 515814 conditions, 39957 events (19915/39956 cut-off events. For 1412074/1419201 co-relation queries the response was YES. Maximal size of possible extension queue 2179. Compared 438030 event pairs, 2790 based on Foata normal form. 267/39687 useless extension candidates. Maximal degree in co-relation 385208. Up to 23132 conditions per place.). - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (54states, 56/154 universal loopers) in iteration 25,while PetriNetUnfolder was constructing finite prefix that currently has 515814 conditions, 39957 events (19915/39956 cut-off events. For 1412074/1419201 co-relation queries the response was YES. Maximal size of possible extension queue 2179. Compared 438030 event pairs, 2790 based on Foata normal form. 267/39687 useless extension candidates. Maximal degree in co-relation 385208. Up to 23132 conditions per place.). - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (54states, 56/154 universal loopers) in iteration 25,while PetriNetUnfolder was constructing finite prefix that currently has 515814 conditions, 39957 events (19915/39956 cut-off events. For 1412074/1419201 co-relation queries the response was YES. Maximal size of possible extension queue 2179. Compared 438030 event pairs, 2790 based on Foata normal form. 267/39687 useless extension candidates. Maximal degree in co-relation 385208. Up to 23132 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 189 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 5.5s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 811.5s, OverallIterations: 25, TraceHistogramMax: 2, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.0s, AutomataDifference: 742.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 26 mSolverCounterUnknown, 23829 SdHoareTripleChecker+Valid, 29.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23829 mSDsluCounter, 41959 SdHoareTripleChecker+Invalid, 25.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2138 IncrementalHoareTripleChecker+Unchecked, 39926 mSDsCounter, 1198 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 65380 IncrementalHoareTripleChecker+Invalid, 68742 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1198 mSolverCounterUnsat, 2033 mSDtfsCounter, 65380 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7288 GetRequests, 4774 SyntacticMatches, 36 SemanticMatches, 2478 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 122665 ImplicationChecksByTransitivity, 100.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=271131occurred in iteration=24, InterpolantAutomatonStates: 1652, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.5s AutomataMinimizationTime, 24 MinimizatonAttempts, 53293 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 55.1s InterpolantComputationTime, 5965 NumberOfCodeBlocks, 5902 NumberOfCodeBlocksAsserted, 71 NumberOfCheckSat, 8419 ConstructedInterpolants, 118 QuantifiedInterpolants, 94217 SizeOfPredicates, 491 NumberOfNonLiveVariables, 5566 ConjunctsInSsa, 789 ConjunctsInUnsatCore, 63 InterpolantComputations, 8 PerfectInterpolantSequences, 161/1134 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