/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 13:43:43,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 13:43:43,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 13:43:43,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 13:43:43,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 13:43:43,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 13:43:43,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 13:43:43,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 13:43:43,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 13:43:43,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 13:43:43,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 13:43:43,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 13:43:43,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 13:43:43,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 13:43:43,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 13:43:43,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 13:43:43,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 13:43:43,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 13:43:43,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 13:43:43,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 13:43:43,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 13:43:43,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 13:43:43,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 13:43:43,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 13:43:43,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 13:43:43,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 13:43:43,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 13:43:43,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 13:43:43,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 13:43:43,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 13:43:43,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 13:43:43,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 13:43:43,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 13:43:43,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 13:43:43,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 13:43:43,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 13:43:43,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 13:43:43,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 13:43:43,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 13:43:43,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 13:43:43,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 13:43:43,904 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-After.epf [2022-01-19 13:43:43,917 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 13:43:43,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 13:43:43,918 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 13:43:43,918 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 13:43:43,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 13:43:43,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 13:43:43,918 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 13:43:43,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 13:43:43,918 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 13:43:43,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 13:43:43,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 13:43:43,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 13:43:43,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 13:43:43,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 13:43:43,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 13:43:43,924 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 13:43:43,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 13:43:43,924 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 13:43:43,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 13:43:43,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 13:43:43,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 13:43:43,924 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 13:43:43,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 13:43:43,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 13:43:43,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 13:43:43,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 13:43:43,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 13:43:43,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 13:43:43,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 13:43:43,926 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 13:43:43,926 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 13:43:43,926 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 13:43:43,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 13:43:44,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 13:43:44,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 13:43:44,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 13:43:44,087 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 13:43:44,088 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 13:43:44,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c [2022-01-19 13:43:44,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b301a477/76b6275f785442e1a323b8554a3170fa/FLAGf3c766132 [2022-01-19 13:43:44,440 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 13:43:44,440 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c [2022-01-19 13:43:44,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b301a477/76b6275f785442e1a323b8554a3170fa/FLAGf3c766132 [2022-01-19 13:43:44,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b301a477/76b6275f785442e1a323b8554a3170fa [2022-01-19 13:43:44,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 13:43:44,850 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 13:43:44,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 13:43:44,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 13:43:44,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 13:43:44,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:43:44" (1/1) ... [2022-01-19 13:43:44,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c55ae24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:44, skipping insertion in model container [2022-01-19 13:43:44,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:43:44" (1/1) ... [2022-01-19 13:43:44,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 13:43:44,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 13:43:45,017 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c[3963,3976] [2022-01-19 13:43:45,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 13:43:45,024 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 13:43:45,047 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c[3963,3976] [2022-01-19 13:43:45,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 13:43:45,057 INFO L208 MainTranslator]: Completed translation [2022-01-19 13:43:45,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:45 WrapperNode [2022-01-19 13:43:45,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 13:43:45,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 13:43:45,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 13:43:45,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 13:43:45,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:45" (1/1) ... [2022-01-19 13:43:45,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:45" (1/1) ... [2022-01-19 13:43:45,095 INFO L137 Inliner]: procedures = 24, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 238 [2022-01-19 13:43:45,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 13:43:45,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 13:43:45,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 13:43:45,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 13:43:45,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:45" (1/1) ... [2022-01-19 13:43:45,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:45" (1/1) ... [2022-01-19 13:43:45,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:45" (1/1) ... [2022-01-19 13:43:45,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:45" (1/1) ... [2022-01-19 13:43:45,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:45" (1/1) ... [2022-01-19 13:43:45,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:45" (1/1) ... [2022-01-19 13:43:45,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:45" (1/1) ... [2022-01-19 13:43:45,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 13:43:45,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 13:43:45,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 13:43:45,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 13:43:45,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:45" (1/1) ... [2022-01-19 13:43:45,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 13:43:45,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:43:45,152 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) [2022-01-19 13:43:45,161 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 [2022-01-19 13:43:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 13:43:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 13:43:45,182 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 13:43:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 13:43:45,182 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 13:43:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 13:43:45,182 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 13:43:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-01-19 13:43:45,182 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-01-19 13:43:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 13:43:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-01-19 13:43:45,182 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-01-19 13:43:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 13:43:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 13:43:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 13:43:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 13:43:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 13:43:45,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 13:43:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 13:43:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 13:43:45,184 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 13:43:45,267 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 13:43:45,268 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 13:43:45,517 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 13:43:45,572 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 13:43:45,572 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 13:43:45,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:43:45 BoogieIcfgContainer [2022-01-19 13:43:45,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 13:43:45,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 13:43:45,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 13:43:45,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 13:43:45,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 01:43:44" (1/3) ... [2022-01-19 13:43:45,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f4d6ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:43:45, skipping insertion in model container [2022-01-19 13:43:45,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:45" (2/3) ... [2022-01-19 13:43:45,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f4d6ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:43:45, skipping insertion in model container [2022-01-19 13:43:45,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:43:45" (3/3) ... [2022-01-19 13:43:45,579 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2022-01-19 13:43:45,582 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 13:43:45,582 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 13:43:45,582 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 13:43:45,646 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,646 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,647 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,648 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,649 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,649 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,649 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,649 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,649 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,650 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,650 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,650 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,651 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,651 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,651 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,651 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,651 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,652 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,653 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,653 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,653 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,653 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,654 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,654 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,655 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,655 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,655 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,655 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,656 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,656 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,656 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,656 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,657 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,657 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,657 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,657 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,658 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,658 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,658 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,658 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,663 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,663 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,664 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,664 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,664 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,665 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,665 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,665 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,666 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,666 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,666 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,666 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,667 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,667 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,668 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,668 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,669 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,669 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,669 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,669 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,673 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,673 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,673 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,674 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,674 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,674 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,675 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,675 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,675 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,675 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,675 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,675 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,677 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,677 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,677 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,677 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,678 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,678 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,680 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,681 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,682 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,686 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,686 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,686 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:45,693 INFO L148 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-01-19 13:43:45,725 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 13:43:45,729 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 13:43:45,729 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-19 13:43:45,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 179 places, 165 transitions, 370 flow [2022-01-19 13:43:45,784 INFO L129 PetriNetUnfolder]: 2/160 cut-off events. [2022-01-19 13:43:45,784 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-01-19 13:43:45,786 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 160 events. 2/160 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2022-01-19 13:43:45,786 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 165 transitions, 370 flow [2022-01-19 13:43:45,789 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 145 transitions, 320 flow [2022-01-19 13:43:45,836 INFO L129 PetriNetUnfolder]: 2/144 cut-off events. [2022-01-19 13:43:45,836 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-01-19 13:43:45,837 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:43:45,837 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:43:45,838 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:43:45,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:43:45,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1882316905, now seen corresponding path program 1 times [2022-01-19 13:43:45,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:43:45,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656206465] [2022-01-19 13:43:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:43:45,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:43:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:43:46,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:43:46,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:43:46,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656206465] [2022-01-19 13:43:46,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656206465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:43:46,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:43:46,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-19 13:43:46,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523050852] [2022-01-19 13:43:46,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:43:46,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-19 13:43:46,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:43:46,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-19 13:43:46,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-01-19 13:43:46,606 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 165 [2022-01-19 13:43:46,612 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 145 transitions, 320 flow. Second operand has 12 states, 12 states have (on average 115.08333333333333) internal successors, (1381), 12 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:46,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:43:46,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 165 [2022-01-19 13:43:46,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:43:50,865 INFO L129 PetriNetUnfolder]: 28398/43787 cut-off events. [2022-01-19 13:43:50,866 INFO L130 PetriNetUnfolder]: For 7195/7249 co-relation queries the response was YES. [2022-01-19 13:43:50,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86820 conditions, 43787 events. 28398/43787 cut-off events. For 7195/7249 co-relation queries the response was YES. Maximal size of possible extension queue 1725. Compared 330731 event pairs, 16376 based on Foata normal form. 4/42714 useless extension candidates. Maximal degree in co-relation 68872. Up to 12802 conditions per place. [2022-01-19 13:43:51,122 INFO L132 encePairwiseOnDemand]: 141/165 looper letters, 122 selfloop transitions, 27 changer transitions 26/267 dead transitions. [2022-01-19 13:43:51,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 267 transitions, 1004 flow [2022-01-19 13:43:51,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 13:43:51,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 13:43:51,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1957 transitions. [2022-01-19 13:43:51,134 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7412878787878788 [2022-01-19 13:43:51,135 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1957 transitions. [2022-01-19 13:43:51,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1957 transitions. [2022-01-19 13:43:51,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:43:51,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1957 transitions. [2022-01-19 13:43:51,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 122.3125) internal successors, (1957), 16 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:51,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 165.0) internal successors, (2805), 17 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:51,152 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 165.0) internal successors, (2805), 17 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:51,154 INFO L186 Difference]: Start difference. First operand has 159 places, 145 transitions, 320 flow. Second operand 16 states and 1957 transitions. [2022-01-19 13:43:51,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 267 transitions, 1004 flow [2022-01-19 13:43:51,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 267 transitions, 924 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-01-19 13:43:51,227 INFO L242 Difference]: Finished difference. Result has 174 places, 162 transitions, 479 flow [2022-01-19 13:43:51,228 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=479, PETRI_PLACES=174, PETRI_TRANSITIONS=162} [2022-01-19 13:43:51,231 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 15 predicate places. [2022-01-19 13:43:51,231 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 162 transitions, 479 flow [2022-01-19 13:43:51,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 115.08333333333333) internal successors, (1381), 12 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:51,232 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:43:51,232 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:43:51,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 13:43:51,232 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:43:51,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:43:51,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1644980583, now seen corresponding path program 2 times [2022-01-19 13:43:51,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:43:51,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930822690] [2022-01-19 13:43:51,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:43:51,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:43:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:43:51,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:43:51,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:43:51,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930822690] [2022-01-19 13:43:51,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930822690] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:43:51,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:43:51,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-19 13:43:51,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730976779] [2022-01-19 13:43:51,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:43:51,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-19 13:43:51,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:43:51,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-19 13:43:51,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-01-19 13:43:51,497 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 165 [2022-01-19 13:43:51,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 162 transitions, 479 flow. Second operand has 12 states, 12 states have (on average 115.08333333333333) internal successors, (1381), 12 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:51,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:43:51,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 165 [2022-01-19 13:43:51,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:43:54,981 INFO L129 PetriNetUnfolder]: 25385/42661 cut-off events. [2022-01-19 13:43:54,981 INFO L130 PetriNetUnfolder]: For 34339/34339 co-relation queries the response was YES. [2022-01-19 13:43:55,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108685 conditions, 42661 events. 25385/42661 cut-off events. For 34339/34339 co-relation queries the response was YES. Maximal size of possible extension queue 1845. Compared 370827 event pairs, 6884 based on Foata normal form. 1/42097 useless extension candidates. Maximal degree in co-relation 108666. Up to 22556 conditions per place. [2022-01-19 13:43:55,227 INFO L132 encePairwiseOnDemand]: 146/165 looper letters, 82 selfloop transitions, 29 changer transitions 47/250 dead transitions. [2022-01-19 13:43:55,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 250 transitions, 1152 flow [2022-01-19 13:43:55,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 13:43:55,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 13:43:55,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1472 transitions. [2022-01-19 13:43:55,230 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7434343434343434 [2022-01-19 13:43:55,230 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1472 transitions. [2022-01-19 13:43:55,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1472 transitions. [2022-01-19 13:43:55,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:43:55,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1472 transitions. [2022-01-19 13:43:55,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 122.66666666666667) internal successors, (1472), 12 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:55,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 165.0) internal successors, (2145), 13 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:55,237 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 165.0) internal successors, (2145), 13 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:55,237 INFO L186 Difference]: Start difference. First operand has 174 places, 162 transitions, 479 flow. Second operand 12 states and 1472 transitions. [2022-01-19 13:43:55,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 250 transitions, 1152 flow [2022-01-19 13:43:55,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 250 transitions, 1109 flow, removed 10 selfloop flow, removed 8 redundant places. [2022-01-19 13:43:55,284 INFO L242 Difference]: Finished difference. Result has 175 places, 174 transitions, 627 flow [2022-01-19 13:43:55,284 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=627, PETRI_PLACES=175, PETRI_TRANSITIONS=174} [2022-01-19 13:43:55,285 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 16 predicate places. [2022-01-19 13:43:55,285 INFO L470 AbstractCegarLoop]: Abstraction has has 175 places, 174 transitions, 627 flow [2022-01-19 13:43:55,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 115.08333333333333) internal successors, (1381), 12 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:55,285 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:43:55,286 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:43:55,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 13:43:55,286 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:43:55,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:43:55,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1318499785, now seen corresponding path program 3 times [2022-01-19 13:43:55,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:43:55,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851341378] [2022-01-19 13:43:55,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:43:55,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:43:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:43:55,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:43:55,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:43:55,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851341378] [2022-01-19 13:43:55,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851341378] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:43:55,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:43:55,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:43:55,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666345473] [2022-01-19 13:43:55,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:43:55,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:43:55,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:43:55,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:43:55,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:43:55,466 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:43:55,467 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 174 transitions, 627 flow. Second operand has 10 states, 10 states have (on average 124.9) internal successors, (1249), 10 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:55,467 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:43:55,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:43:55,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:43:57,368 INFO L129 PetriNetUnfolder]: 14040/22867 cut-off events. [2022-01-19 13:43:57,368 INFO L130 PetriNetUnfolder]: For 35779/41832 co-relation queries the response was YES. [2022-01-19 13:43:57,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66682 conditions, 22867 events. 14040/22867 cut-off events. For 35779/41832 co-relation queries the response was YES. Maximal size of possible extension queue 1224. Compared 178398 event pairs, 1545 based on Foata normal form. 201/21583 useless extension candidates. Maximal degree in co-relation 66658. Up to 5638 conditions per place. [2022-01-19 13:43:57,601 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 95 selfloop transitions, 58 changer transitions 1/281 dead transitions. [2022-01-19 13:43:57,601 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 281 transitions, 1286 flow [2022-01-19 13:43:57,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 13:43:57,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 13:43:57,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1347 transitions. [2022-01-19 13:43:57,604 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8163636363636364 [2022-01-19 13:43:57,604 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1347 transitions. [2022-01-19 13:43:57,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1347 transitions. [2022-01-19 13:43:57,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:43:57,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1347 transitions. [2022-01-19 13:43:57,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.7) internal successors, (1347), 10 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:57,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:57,609 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:57,609 INFO L186 Difference]: Start difference. First operand has 175 places, 174 transitions, 627 flow. Second operand 10 states and 1347 transitions. [2022-01-19 13:43:57,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 281 transitions, 1286 flow [2022-01-19 13:43:57,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 281 transitions, 1225 flow, removed 14 selfloop flow, removed 9 redundant places. [2022-01-19 13:43:57,667 INFO L242 Difference]: Finished difference. Result has 172 places, 218 transitions, 831 flow [2022-01-19 13:43:57,667 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=831, PETRI_PLACES=172, PETRI_TRANSITIONS=218} [2022-01-19 13:43:57,668 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 13 predicate places. [2022-01-19 13:43:57,669 INFO L470 AbstractCegarLoop]: Abstraction has has 172 places, 218 transitions, 831 flow [2022-01-19 13:43:57,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 124.9) internal successors, (1249), 10 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:57,669 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:43:57,669 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:43:57,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 13:43:57,670 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:43:57,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:43:57,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1113799159, now seen corresponding path program 4 times [2022-01-19 13:43:57,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:43:57,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760719381] [2022-01-19 13:43:57,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:43:57,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:43:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:43:57,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:43:57,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:43:57,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760719381] [2022-01-19 13:43:57,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760719381] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:43:57,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:43:57,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 13:43:57,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237527423] [2022-01-19 13:43:57,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:43:57,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:43:57,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:43:57,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:43:57,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-19 13:43:57,803 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:43:57,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 218 transitions, 831 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:57,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:43:57,804 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:43:57,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:44:00,831 INFO L129 PetriNetUnfolder]: 20024/38070 cut-off events. [2022-01-19 13:44:00,831 INFO L130 PetriNetUnfolder]: For 42114/46734 co-relation queries the response was YES. [2022-01-19 13:44:01,003 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109720 conditions, 38070 events. 20024/38070 cut-off events. For 42114/46734 co-relation queries the response was YES. Maximal size of possible extension queue 2125. Compared 381409 event pairs, 4107 based on Foata normal form. 1352/37946 useless extension candidates. Maximal degree in co-relation 51763. Up to 8245 conditions per place. [2022-01-19 13:44:01,168 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 128 selfloop transitions, 84 changer transitions 0/339 dead transitions. [2022-01-19 13:44:01,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 339 transitions, 1813 flow [2022-01-19 13:44:01,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:44:01,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:44:01,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 946 transitions. [2022-01-19 13:44:01,170 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.819047619047619 [2022-01-19 13:44:01,171 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 946 transitions. [2022-01-19 13:44:01,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 946 transitions. [2022-01-19 13:44:01,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:44:01,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 946 transitions. [2022-01-19 13:44:01,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:01,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:01,174 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:01,174 INFO L186 Difference]: Start difference. First operand has 172 places, 218 transitions, 831 flow. Second operand 7 states and 946 transitions. [2022-01-19 13:44:01,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 339 transitions, 1813 flow [2022-01-19 13:44:01,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 339 transitions, 1689 flow, removed 57 selfloop flow, removed 3 redundant places. [2022-01-19 13:44:01,217 INFO L242 Difference]: Finished difference. Result has 177 places, 283 transitions, 1388 flow [2022-01-19 13:44:01,217 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1388, PETRI_PLACES=177, PETRI_TRANSITIONS=283} [2022-01-19 13:44:01,217 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 18 predicate places. [2022-01-19 13:44:01,218 INFO L470 AbstractCegarLoop]: Abstraction has has 177 places, 283 transitions, 1388 flow [2022-01-19 13:44:01,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:01,218 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:44:01,218 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:44:01,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 13:44:01,218 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:44:01,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:44:01,219 INFO L85 PathProgramCache]: Analyzing trace with hash -904049683, now seen corresponding path program 5 times [2022-01-19 13:44:01,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:44:01,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445153953] [2022-01-19 13:44:01,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:44:01,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:44:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:44:01,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:44:01,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:44:01,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445153953] [2022-01-19 13:44:01,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445153953] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:44:01,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:44:01,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 13:44:01,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245307046] [2022-01-19 13:44:01,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:44:01,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 13:44:01,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:44:01,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 13:44:01,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-19 13:44:01,328 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:44:01,330 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 283 transitions, 1388 flow. Second operand has 8 states, 8 states have (on average 125.875) internal successors, (1007), 8 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:01,330 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:44:01,330 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:44:01,330 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:44:04,376 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([491] L109-->L112: Formula: (= (ite (= (ite (or (not (= (mod v_~b~0_6 256) 0)) (= v_~x~0_5 1)) 1 0) 0) 0 1) v_~b~0_5) InVars {~b~0=v_~b~0_6, ~x~0=v_~x~0_5} OutVars{~b~0=v_~b~0_5, ~x~0=v_~x~0_5} AuxVars[] AssignedVars[~b~0][199], [83#L160-4true, 44#L93true, 73#L134true, 145#L112true, 286#(<= (+ 2 ~s~0) ~t~0), Black: 263#(and (<= (+ ~s~0 4) ~t~0) (<= (+ ~s~0 4) ~m5~0)), 271#(<= (+ ~s~0 1) ~t~0), 101#L74true, Black: 201#(and (<= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), Black: 227#(= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0), Black: 276#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m4~0)), Black: 191#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 186#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~t~0 ~s~0)), Black: 270#(<= ~s~0 ~t~0), 78#L55true, Black: 226#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~m1~0 ~s~0)), Black: 187#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~m2~0 ~s~0)), Black: 188#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0)), 258#(<= (+ ~s~0 4) ~t~0)]) [2022-01-19 13:44:04,376 INFO L384 tUnfolder$Statistics]: this new event has 103 ancestors and is cut-off event [2022-01-19 13:44:04,376 INFO L387 tUnfolder$Statistics]: existing Event has 103 ancestors and is cut-off event [2022-01-19 13:44:04,376 INFO L387 tUnfolder$Statistics]: existing Event has 103 ancestors and is cut-off event [2022-01-19 13:44:04,376 INFO L387 tUnfolder$Statistics]: existing Event has 103 ancestors and is cut-off event [2022-01-19 13:44:05,540 INFO L129 PetriNetUnfolder]: 25513/47183 cut-off events. [2022-01-19 13:44:05,540 INFO L130 PetriNetUnfolder]: For 89096/98166 co-relation queries the response was YES. [2022-01-19 13:44:05,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158297 conditions, 47183 events. 25513/47183 cut-off events. For 89096/98166 co-relation queries the response was YES. Maximal size of possible extension queue 2703. Compared 473679 event pairs, 4721 based on Foata normal form. 1931/46703 useless extension candidates. Maximal degree in co-relation 57954. Up to 11796 conditions per place. [2022-01-19 13:44:05,955 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 129 selfloop transitions, 166 changer transitions 0/422 dead transitions. [2022-01-19 13:44:05,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 422 transitions, 2718 flow [2022-01-19 13:44:05,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 13:44:05,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 13:44:05,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1094 transitions. [2022-01-19 13:44:05,957 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8287878787878787 [2022-01-19 13:44:05,957 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1094 transitions. [2022-01-19 13:44:05,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1094 transitions. [2022-01-19 13:44:05,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:44:05,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1094 transitions. [2022-01-19 13:44:05,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 136.75) internal successors, (1094), 8 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:05,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:05,961 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:05,961 INFO L186 Difference]: Start difference. First operand has 177 places, 283 transitions, 1388 flow. Second operand 8 states and 1094 transitions. [2022-01-19 13:44:05,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 422 transitions, 2718 flow [2022-01-19 13:44:06,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 422 transitions, 2694 flow, removed 10 selfloop flow, removed 2 redundant places. [2022-01-19 13:44:06,065 INFO L242 Difference]: Finished difference. Result has 184 places, 360 transitions, 2343 flow [2022-01-19 13:44:06,065 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=1374, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2343, PETRI_PLACES=184, PETRI_TRANSITIONS=360} [2022-01-19 13:44:06,065 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 25 predicate places. [2022-01-19 13:44:06,066 INFO L470 AbstractCegarLoop]: Abstraction has has 184 places, 360 transitions, 2343 flow [2022-01-19 13:44:06,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 125.875) internal successors, (1007), 8 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:06,066 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:44:06,066 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:44:06,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 13:44:06,066 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:44:06,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:44:06,067 INFO L85 PathProgramCache]: Analyzing trace with hash -147796337, now seen corresponding path program 6 times [2022-01-19 13:44:06,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:44:06,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527913757] [2022-01-19 13:44:06,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:44:06,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:44:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:44:06,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:44:06,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:44:06,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527913757] [2022-01-19 13:44:06,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527913757] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:44:06,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:44:06,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 13:44:06,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942430101] [2022-01-19 13:44:06,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:44:06,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 13:44:06,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:44:06,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 13:44:06,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-01-19 13:44:06,149 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:44:06,150 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 360 transitions, 2343 flow. Second operand has 9 states, 9 states have (on average 125.33333333333333) internal successors, (1128), 9 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:06,150 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:44:06,150 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:44:06,150 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:44:09,078 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([486] L93-->L96: Formula: (= v_~s~0_79 (+ v_~s~0_80 1)) InVars {~s~0=v_~s~0_80} OutVars{thread3Thread1of1ForFork4_#t~post6#1=|v_thread3Thread1of1ForFork4_#t~post6#1_1|, ~s~0=v_~s~0_79} AuxVars[] AssignedVars[thread3Thread1of1ForFork4_#t~post6#1, ~s~0][197], [42#L115true, 24#L52true, 83#L160-4true, Black: 291#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), Black: 284#(<= ~s~0 ~t~0), 131#L128true, Black: 263#(and (<= (+ ~s~0 4) ~t~0) (<= (+ ~s~0 4) ~m5~0)), 57#L96true, Black: 201#(and (<= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), Black: 227#(= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0), Black: 191#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 276#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m4~0)), Black: 186#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~t~0 ~s~0)), 301#(<= (+ 2 ~s~0) ~t~0), 21#L71true, Black: 187#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~m2~0 ~s~0)), Black: 226#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~m1~0 ~s~0)), 257#(<= (+ 3 ~s~0) ~t~0), Black: 188#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0)), 285#(<= (+ ~s~0 1) ~t~0), 270#(<= ~s~0 ~t~0)]) [2022-01-19 13:44:09,078 INFO L384 tUnfolder$Statistics]: this new event has 101 ancestors and is cut-off event [2022-01-19 13:44:09,078 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-01-19 13:44:09,078 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-01-19 13:44:09,078 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-01-19 13:44:09,078 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([497] L128-->L131: Formula: (= v_~b~0_7 (ite (= (ite (or (= v_~x~0_6 1) (not (= 0 (mod v_~b~0_8 256)))) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_8, ~x~0=v_~x~0_6} OutVars{~b~0=v_~b~0_7, ~x~0=v_~x~0_6} AuxVars[] AssignedVars[~b~0][261], [42#L115true, 24#L52true, 83#L160-4true, Black: 291#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), 44#L93true, Black: 284#(<= ~s~0 ~t~0), 302#(<= (+ 3 ~s~0) ~t~0), 286#(<= (+ 2 ~s~0) ~t~0), Black: 263#(and (<= (+ ~s~0 4) ~t~0) (<= (+ ~s~0 4) ~m5~0)), 271#(<= (+ ~s~0 1) ~t~0), Black: 201#(and (<= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), Black: 227#(= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0), Black: 191#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 276#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m4~0)), Black: 186#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~t~0 ~s~0)), Black: 270#(<= ~s~0 ~t~0), 21#L71true, Black: 187#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~m2~0 ~s~0)), Black: 226#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~m1~0 ~s~0)), Black: 188#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0)), 82#L131true, 258#(<= (+ ~s~0 4) ~t~0)]) [2022-01-19 13:44:09,078 INFO L384 tUnfolder$Statistics]: this new event has 101 ancestors and is cut-off event [2022-01-19 13:44:09,078 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-01-19 13:44:09,078 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-01-19 13:44:09,078 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-01-19 13:44:09,079 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([474] L55-->L58: Formula: (= v_~s~0_59 (+ v_~s~0_60 1)) InVars {~s~0=v_~s~0_60} OutVars{thread1Thread1of1ForFork0_#t~post2#1=|v_thread1Thread1of1ForFork0_#t~post2#1_1|, ~s~0=v_~s~0_59} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post2#1, ~s~0][241], [42#L115true, 83#L160-4true, Black: 291#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), 44#L93true, Black: 284#(<= ~s~0 ~t~0), 131#L128true, Black: 263#(and (<= (+ ~s~0 4) ~t~0) (<= (+ ~s~0 4) ~m5~0)), Black: 201#(and (<= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), Black: 227#(= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0), Black: 191#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 276#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m4~0)), Black: 186#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~t~0 ~s~0)), 301#(<= (+ 2 ~s~0) ~t~0), 21#L71true, Black: 187#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~m2~0 ~s~0)), Black: 226#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~m1~0 ~s~0)), 257#(<= (+ 3 ~s~0) ~t~0), Black: 188#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0)), 127#L58true, 270#(<= ~s~0 ~t~0), 285#(<= (+ ~s~0 1) ~t~0)]) [2022-01-19 13:44:09,079 INFO L384 tUnfolder$Statistics]: this new event has 102 ancestors and is cut-off event [2022-01-19 13:44:09,079 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-01-19 13:44:09,079 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-01-19 13:44:09,079 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-01-19 13:44:09,303 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([497] L128-->L131: Formula: (= v_~b~0_7 (ite (= (ite (or (= v_~x~0_6 1) (not (= 0 (mod v_~b~0_8 256)))) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_8, ~x~0=v_~x~0_6} OutVars{~b~0=v_~b~0_7, ~x~0=v_~x~0_6} AuxVars[] AssignedVars[~b~0][261], [42#L115true, 83#L160-4true, Black: 291#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), 44#L93true, Black: 284#(<= ~s~0 ~t~0), 302#(<= (+ 3 ~s~0) ~t~0), 286#(<= (+ 2 ~s~0) ~t~0), Black: 263#(and (<= (+ ~s~0 4) ~t~0) (<= (+ ~s~0 4) ~m5~0)), 271#(<= (+ ~s~0 1) ~t~0), Black: 201#(and (<= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), Black: 227#(= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0), Black: 191#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 276#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m4~0)), 78#L55true, Black: 270#(<= ~s~0 ~t~0), Black: 186#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~t~0 ~s~0)), Black: 226#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~m1~0 ~s~0)), Black: 187#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~m2~0 ~s~0)), 21#L71true, Black: 188#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0)), 82#L131true, 258#(<= (+ ~s~0 4) ~t~0)]) [2022-01-19 13:44:09,304 INFO L384 tUnfolder$Statistics]: this new event has 102 ancestors and is cut-off event [2022-01-19 13:44:09,304 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-01-19 13:44:09,304 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-01-19 13:44:09,304 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-01-19 13:44:09,321 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([497] L128-->L131: Formula: (= v_~b~0_7 (ite (= (ite (or (= v_~x~0_6 1) (not (= 0 (mod v_~b~0_8 256)))) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_8, ~x~0=v_~x~0_6} OutVars{~b~0=v_~b~0_7, ~x~0=v_~x~0_6} AuxVars[] AssignedVars[~b~0][261], [42#L115true, 83#L160-4true, 44#L93true, Black: 291#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), Black: 284#(<= ~s~0 ~t~0), 302#(<= (+ 3 ~s~0) ~t~0), 286#(<= (+ 2 ~s~0) ~t~0), Black: 263#(and (<= (+ ~s~0 4) ~t~0) (<= (+ ~s~0 4) ~m5~0)), 271#(<= (+ ~s~0 1) ~t~0), Black: 201#(and (<= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), Black: 227#(= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0), Black: 191#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 276#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m4~0)), Black: 186#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~t~0 ~s~0)), Black: 270#(<= ~s~0 ~t~0), 78#L55true, 21#L71true, Black: 187#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~m2~0 ~s~0)), Black: 226#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~m1~0 ~s~0)), Black: 188#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0)), 82#L131true, 258#(<= (+ ~s~0 4) ~t~0)]) [2022-01-19 13:44:09,321 INFO L384 tUnfolder$Statistics]: this new event has 102 ancestors and is cut-off event [2022-01-19 13:44:09,321 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-01-19 13:44:09,321 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-01-19 13:44:09,321 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-01-19 13:44:09,321 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-01-19 13:44:09,321 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([474] L55-->L58: Formula: (= v_~s~0_59 (+ v_~s~0_60 1)) InVars {~s~0=v_~s~0_60} OutVars{thread1Thread1of1ForFork0_#t~post2#1=|v_thread1Thread1of1ForFork0_#t~post2#1_1|, ~s~0=v_~s~0_59} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post2#1, ~s~0][241], [42#L115true, 83#L160-4true, 44#L93true, Black: 291#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), Black: 284#(<= ~s~0 ~t~0), 131#L128true, Black: 263#(and (<= (+ ~s~0 4) ~t~0) (<= (+ ~s~0 4) ~m5~0)), Black: 201#(and (<= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), Black: 227#(= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0), Black: 276#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m4~0)), Black: 191#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 186#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~t~0 ~s~0)), 301#(<= (+ 2 ~s~0) ~t~0), 21#L71true, Black: 187#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~m2~0 ~s~0)), 257#(<= (+ 3 ~s~0) ~t~0), Black: 226#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~m1~0 ~s~0)), Black: 188#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0)), 127#L58true, 285#(<= (+ ~s~0 1) ~t~0), 270#(<= ~s~0 ~t~0)]) [2022-01-19 13:44:09,322 INFO L384 tUnfolder$Statistics]: this new event has 102 ancestors and is cut-off event [2022-01-19 13:44:09,322 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-01-19 13:44:09,322 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-01-19 13:44:09,322 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-01-19 13:44:09,322 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-01-19 13:44:10,776 INFO L129 PetriNetUnfolder]: 26530/47127 cut-off events. [2022-01-19 13:44:10,776 INFO L130 PetriNetUnfolder]: For 149341/160102 co-relation queries the response was YES. [2022-01-19 13:44:11,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 185117 conditions, 47127 events. 26530/47127 cut-off events. For 149341/160102 co-relation queries the response was YES. Maximal size of possible extension queue 2587. Compared 453882 event pairs, 3807 based on Foata normal form. 2373/47034 useless extension candidates. Maximal degree in co-relation 127011. Up to 12762 conditions per place. [2022-01-19 13:44:11,245 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 114 selfloop transitions, 218 changer transitions 2/461 dead transitions. [2022-01-19 13:44:11,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 461 transitions, 3576 flow [2022-01-19 13:44:11,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 13:44:11,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 13:44:11,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1230 transitions. [2022-01-19 13:44:11,247 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8282828282828283 [2022-01-19 13:44:11,248 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1230 transitions. [2022-01-19 13:44:11,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1230 transitions. [2022-01-19 13:44:11,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:44:11,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1230 transitions. [2022-01-19 13:44:11,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.66666666666666) internal successors, (1230), 9 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:11,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:11,252 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:11,252 INFO L186 Difference]: Start difference. First operand has 184 places, 360 transitions, 2343 flow. Second operand 9 states and 1230 transitions. [2022-01-19 13:44:11,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 461 transitions, 3576 flow [2022-01-19 13:44:11,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 461 transitions, 3524 flow, removed 24 selfloop flow, removed 2 redundant places. [2022-01-19 13:44:11,919 INFO L242 Difference]: Finished difference. Result has 192 places, 395 transitions, 3138 flow [2022-01-19 13:44:11,919 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=2319, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3138, PETRI_PLACES=192, PETRI_TRANSITIONS=395} [2022-01-19 13:44:11,920 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 33 predicate places. [2022-01-19 13:44:11,920 INFO L470 AbstractCegarLoop]: Abstraction has has 192 places, 395 transitions, 3138 flow [2022-01-19 13:44:11,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 125.33333333333333) internal successors, (1128), 9 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:11,920 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:44:11,920 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:44:11,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 13:44:11,920 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:44:11,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:44:11,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1325641699, now seen corresponding path program 7 times [2022-01-19 13:44:11,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:44:11,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223549098] [2022-01-19 13:44:11,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:44:11,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:44:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:44:12,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:44:12,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:44:12,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223549098] [2022-01-19 13:44:12,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223549098] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:44:12,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:44:12,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 13:44:12,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019517305] [2022-01-19 13:44:12,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:44:12,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:44:12,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:44:12,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:44:12,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-19 13:44:12,006 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:44:12,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 395 transitions, 3138 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:12,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:44:12,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:44:12,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:44:16,926 INFO L129 PetriNetUnfolder]: 25014/47806 cut-off events. [2022-01-19 13:44:16,926 INFO L130 PetriNetUnfolder]: For 192179/199828 co-relation queries the response was YES. [2022-01-19 13:44:17,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200073 conditions, 47806 events. 25014/47806 cut-off events. For 192179/199828 co-relation queries the response was YES. Maximal size of possible extension queue 2716. Compared 498570 event pairs, 5909 based on Foata normal form. 1999/47720 useless extension candidates. Maximal degree in co-relation 105004. Up to 12767 conditions per place. [2022-01-19 13:44:17,632 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 209 selfloop transitions, 137 changer transitions 0/473 dead transitions. [2022-01-19 13:44:17,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 473 transitions, 4409 flow [2022-01-19 13:44:17,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:44:17,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:44:17,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 945 transitions. [2022-01-19 13:44:17,635 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2022-01-19 13:44:17,635 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 945 transitions. [2022-01-19 13:44:17,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 945 transitions. [2022-01-19 13:44:17,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:44:17,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 945 transitions. [2022-01-19 13:44:17,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.0) internal successors, (945), 7 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:17,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:17,638 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:17,638 INFO L186 Difference]: Start difference. First operand has 192 places, 395 transitions, 3138 flow. Second operand 7 states and 945 transitions. [2022-01-19 13:44:17,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 473 transitions, 4409 flow [2022-01-19 13:44:18,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 473 transitions, 4378 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-01-19 13:44:18,485 INFO L242 Difference]: Finished difference. Result has 197 places, 420 transitions, 3801 flow [2022-01-19 13:44:18,485 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=3111, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3801, PETRI_PLACES=197, PETRI_TRANSITIONS=420} [2022-01-19 13:44:18,487 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 38 predicate places. [2022-01-19 13:44:18,487 INFO L470 AbstractCegarLoop]: Abstraction has has 197 places, 420 transitions, 3801 flow [2022-01-19 13:44:18,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:18,488 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:44:18,488 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:44:18,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 13:44:18,488 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:44:18,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:44:18,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1392558915, now seen corresponding path program 8 times [2022-01-19 13:44:18,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:44:18,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964710006] [2022-01-19 13:44:18,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:44:18,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:44:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:44:18,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:44:18,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:44:18,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964710006] [2022-01-19 13:44:18,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964710006] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:44:18,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:44:18,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 13:44:18,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631410883] [2022-01-19 13:44:18,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:44:18,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:44:18,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:44:18,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:44:18,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-19 13:44:18,589 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:44:18,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 420 transitions, 3801 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:18,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:44:18,589 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:44:18,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:44:23,538 INFO L129 PetriNetUnfolder]: 23131/44122 cut-off events. [2022-01-19 13:44:23,539 INFO L130 PetriNetUnfolder]: For 228108/240901 co-relation queries the response was YES. [2022-01-19 13:44:23,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200748 conditions, 44122 events. 23131/44122 cut-off events. For 228108/240901 co-relation queries the response was YES. Maximal size of possible extension queue 2695. Compared 459176 event pairs, 5400 based on Foata normal form. 3096/45038 useless extension candidates. Maximal degree in co-relation 131312. Up to 12823 conditions per place. [2022-01-19 13:44:24,005 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 207 selfloop transitions, 176 changer transitions 1/507 dead transitions. [2022-01-19 13:44:24,006 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 507 transitions, 5416 flow [2022-01-19 13:44:24,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:44:24,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:44:24,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 947 transitions. [2022-01-19 13:44:24,008 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8199134199134199 [2022-01-19 13:44:24,008 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 947 transitions. [2022-01-19 13:44:24,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 947 transitions. [2022-01-19 13:44:24,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:44:24,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 947 transitions. [2022-01-19 13:44:24,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.28571428571428) internal successors, (947), 7 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:24,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:24,012 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:24,012 INFO L186 Difference]: Start difference. First operand has 197 places, 420 transitions, 3801 flow. Second operand 7 states and 947 transitions. [2022-01-19 13:44:24,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 507 transitions, 5416 flow [2022-01-19 13:44:24,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 507 transitions, 5183 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-01-19 13:44:24,432 INFO L242 Difference]: Finished difference. Result has 200 places, 456 transitions, 4660 flow [2022-01-19 13:44:24,432 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=3561, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4660, PETRI_PLACES=200, PETRI_TRANSITIONS=456} [2022-01-19 13:44:24,432 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 41 predicate places. [2022-01-19 13:44:24,432 INFO L470 AbstractCegarLoop]: Abstraction has has 200 places, 456 transitions, 4660 flow [2022-01-19 13:44:24,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:24,433 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:44:24,433 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:44:24,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 13:44:24,433 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:44:24,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:44:24,433 INFO L85 PathProgramCache]: Analyzing trace with hash 62190035, now seen corresponding path program 9 times [2022-01-19 13:44:24,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:44:24,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929056417] [2022-01-19 13:44:24,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:44:24,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:44:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:44:24,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:44:24,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:44:24,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929056417] [2022-01-19 13:44:24,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929056417] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:44:24,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:44:24,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 13:44:24,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320399837] [2022-01-19 13:44:24,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:44:24,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:44:24,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:44:24,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:44:24,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-19 13:44:24,503 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:44:24,504 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 456 transitions, 4660 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:24,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:44:24,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:44:24,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:44:29,222 INFO L129 PetriNetUnfolder]: 21462/42203 cut-off events. [2022-01-19 13:44:29,222 INFO L130 PetriNetUnfolder]: For 257500/266501 co-relation queries the response was YES. [2022-01-19 13:44:29,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196130 conditions, 42203 events. 21462/42203 cut-off events. For 257500/266501 co-relation queries the response was YES. Maximal size of possible extension queue 2633. Compared 448894 event pairs, 5058 based on Foata normal form. 2478/42458 useless extension candidates. Maximal degree in co-relation 59661. Up to 12638 conditions per place. [2022-01-19 13:44:29,842 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 208 selfloop transitions, 207 changer transitions 3/539 dead transitions. [2022-01-19 13:44:29,842 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 539 transitions, 6321 flow [2022-01-19 13:44:29,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:44:29,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:44:29,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 947 transitions. [2022-01-19 13:44:29,844 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8199134199134199 [2022-01-19 13:44:29,844 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 947 transitions. [2022-01-19 13:44:29,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 947 transitions. [2022-01-19 13:44:29,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:44:29,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 947 transitions. [2022-01-19 13:44:29,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.28571428571428) internal successors, (947), 7 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:29,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:29,847 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:29,847 INFO L186 Difference]: Start difference. First operand has 200 places, 456 transitions, 4660 flow. Second operand 7 states and 947 transitions. [2022-01-19 13:44:29,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 539 transitions, 6321 flow [2022-01-19 13:44:30,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 539 transitions, 6098 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 13:44:30,114 INFO L242 Difference]: Finished difference. Result has 204 places, 487 transitions, 5553 flow [2022-01-19 13:44:30,114 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=4425, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5553, PETRI_PLACES=204, PETRI_TRANSITIONS=487} [2022-01-19 13:44:30,115 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 45 predicate places. [2022-01-19 13:44:30,115 INFO L470 AbstractCegarLoop]: Abstraction has has 204 places, 487 transitions, 5553 flow [2022-01-19 13:44:30,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:30,115 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:44:30,115 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:44:30,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 13:44:30,115 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:44:30,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:44:30,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1785034139, now seen corresponding path program 10 times [2022-01-19 13:44:30,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:44:30,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985277828] [2022-01-19 13:44:30,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:44:30,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:44:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:44:30,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:44:30,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:44:30,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985277828] [2022-01-19 13:44:30,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985277828] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:44:30,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:44:30,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 13:44:30,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460356018] [2022-01-19 13:44:30,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:44:30,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:44:30,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:44:30,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:44:30,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-19 13:44:30,200 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:44:30,201 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 487 transitions, 5553 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:30,201 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:44:30,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:44:30,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:44:33,775 INFO L129 PetriNetUnfolder]: 14692/30055 cut-off events. [2022-01-19 13:44:33,775 INFO L130 PetriNetUnfolder]: For 215793/224682 co-relation queries the response was YES. [2022-01-19 13:44:33,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146057 conditions, 30055 events. 14692/30055 cut-off events. For 215793/224682 co-relation queries the response was YES. Maximal size of possible extension queue 1625. Compared 310966 event pairs, 3012 based on Foata normal form. 2585/31090 useless extension candidates. Maximal degree in co-relation 102978. Up to 9801 conditions per place. [2022-01-19 13:44:34,115 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 200 selfloop transitions, 250 changer transitions 0/561 dead transitions. [2022-01-19 13:44:34,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 561 transitions, 7428 flow [2022-01-19 13:44:34,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:44:34,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:44:34,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 944 transitions. [2022-01-19 13:44:34,117 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8173160173160173 [2022-01-19 13:44:34,117 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 944 transitions. [2022-01-19 13:44:34,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 944 transitions. [2022-01-19 13:44:34,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:44:34,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 944 transitions. [2022-01-19 13:44:34,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 134.85714285714286) internal successors, (944), 7 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:34,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:34,121 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:34,121 INFO L186 Difference]: Start difference. First operand has 204 places, 487 transitions, 5553 flow. Second operand 7 states and 944 transitions. [2022-01-19 13:44:34,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 561 transitions, 7428 flow [2022-01-19 13:44:34,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 561 transitions, 7146 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-01-19 13:44:34,335 INFO L242 Difference]: Finished difference. Result has 205 places, 521 transitions, 6754 flow [2022-01-19 13:44:34,336 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=4829, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6754, PETRI_PLACES=205, PETRI_TRANSITIONS=521} [2022-01-19 13:44:34,336 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 46 predicate places. [2022-01-19 13:44:34,336 INFO L470 AbstractCegarLoop]: Abstraction has has 205 places, 521 transitions, 6754 flow [2022-01-19 13:44:34,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:34,337 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:44:34,337 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:44:34,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 13:44:34,337 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:44:34,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:44:34,337 INFO L85 PathProgramCache]: Analyzing trace with hash 798052969, now seen corresponding path program 11 times [2022-01-19 13:44:34,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:44:34,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081164061] [2022-01-19 13:44:34,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:44:34,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:44:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:44:34,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:44:34,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:44:34,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081164061] [2022-01-19 13:44:34,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081164061] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:44:34,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:44:34,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:44:34,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096047708] [2022-01-19 13:44:34,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:44:34,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:44:34,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:44:34,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:44:34,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:44:34,463 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 165 [2022-01-19 13:44:34,464 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 521 transitions, 6754 flow. Second operand has 10 states, 10 states have (on average 115.9) internal successors, (1159), 10 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:34,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:44:34,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 165 [2022-01-19 13:44:34,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:44:40,107 INFO L129 PetriNetUnfolder]: 26409/43516 cut-off events. [2022-01-19 13:44:40,107 INFO L130 PetriNetUnfolder]: For 355480/355480 co-relation queries the response was YES. [2022-01-19 13:44:40,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 237788 conditions, 43516 events. 26409/43516 cut-off events. For 355480/355480 co-relation queries the response was YES. Maximal size of possible extension queue 1611. Compared 370246 event pairs, 3507 based on Foata normal form. 457/43172 useless extension candidates. Maximal degree in co-relation 82077. Up to 15759 conditions per place. [2022-01-19 13:44:40,544 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 192 selfloop transitions, 405 changer transitions 2/691 dead transitions. [2022-01-19 13:44:40,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 691 transitions, 9467 flow [2022-01-19 13:44:40,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 13:44:40,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 13:44:40,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1296 transitions. [2022-01-19 13:44:40,546 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7854545454545454 [2022-01-19 13:44:40,546 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1296 transitions. [2022-01-19 13:44:40,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1296 transitions. [2022-01-19 13:44:40,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:44:40,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1296 transitions. [2022-01-19 13:44:40,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 129.6) internal successors, (1296), 10 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:40,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:40,550 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:40,551 INFO L186 Difference]: Start difference. First operand has 205 places, 521 transitions, 6754 flow. Second operand 10 states and 1296 transitions. [2022-01-19 13:44:40,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 691 transitions, 9467 flow [2022-01-19 13:44:40,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 691 transitions, 9164 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 13:44:40,863 INFO L242 Difference]: Finished difference. Result has 211 places, 564 transitions, 8216 flow [2022-01-19 13:44:40,863 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=6490, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8216, PETRI_PLACES=211, PETRI_TRANSITIONS=564} [2022-01-19 13:44:40,863 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 52 predicate places. [2022-01-19 13:44:40,864 INFO L470 AbstractCegarLoop]: Abstraction has has 211 places, 564 transitions, 8216 flow [2022-01-19 13:44:40,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 115.9) internal successors, (1159), 10 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:40,864 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:44:40,864 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:44:40,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 13:44:40,864 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:44:40,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:44:40,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1774997625, now seen corresponding path program 12 times [2022-01-19 13:44:40,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:44:40,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815717966] [2022-01-19 13:44:40,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:44:40,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:44:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:44:40,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:44:40,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:44:40,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815717966] [2022-01-19 13:44:40,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815717966] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:44:40,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:44:40,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 13:44:40,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550378180] [2022-01-19 13:44:40,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:44:40,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 13:44:40,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:44:40,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 13:44:40,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-19 13:44:40,974 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 165 [2022-01-19 13:44:40,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 564 transitions, 8216 flow. Second operand has 9 states, 9 states have (on average 116.44444444444444) internal successors, (1048), 9 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:40,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:44:40,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 165 [2022-01-19 13:44:40,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:44:47,159 INFO L129 PetriNetUnfolder]: 26465/47012 cut-off events. [2022-01-19 13:44:47,159 INFO L130 PetriNetUnfolder]: For 435060/435060 co-relation queries the response was YES. [2022-01-19 13:44:47,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 254445 conditions, 47012 events. 26465/47012 cut-off events. For 435060/435060 co-relation queries the response was YES. Maximal size of possible extension queue 1741. Compared 435910 event pairs, 4717 based on Foata normal form. 302/46438 useless extension candidates. Maximal degree in co-relation 81297. Up to 13763 conditions per place. [2022-01-19 13:44:47,819 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 227 selfloop transitions, 392 changer transitions 1/712 dead transitions. [2022-01-19 13:44:47,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 712 transitions, 10720 flow [2022-01-19 13:44:47,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 13:44:47,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 13:44:47,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1163 transitions. [2022-01-19 13:44:47,822 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7831649831649832 [2022-01-19 13:44:47,822 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1163 transitions. [2022-01-19 13:44:47,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1163 transitions. [2022-01-19 13:44:47,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:44:47,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1163 transitions. [2022-01-19 13:44:47,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 129.22222222222223) internal successors, (1163), 9 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:47,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:47,825 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:47,825 INFO L186 Difference]: Start difference. First operand has 211 places, 564 transitions, 8216 flow. Second operand 9 states and 1163 transitions. [2022-01-19 13:44:47,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 712 transitions, 10720 flow [2022-01-19 13:44:48,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 712 transitions, 10253 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-01-19 13:44:48,217 INFO L242 Difference]: Finished difference. Result has 213 places, 594 transitions, 9281 flow [2022-01-19 13:44:48,217 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=7787, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9281, PETRI_PLACES=213, PETRI_TRANSITIONS=594} [2022-01-19 13:44:48,218 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 54 predicate places. [2022-01-19 13:44:48,218 INFO L470 AbstractCegarLoop]: Abstraction has has 213 places, 594 transitions, 9281 flow [2022-01-19 13:44:48,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 116.44444444444444) internal successors, (1048), 9 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:48,218 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:44:48,218 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:44:48,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 13:44:48,218 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:44:48,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:44:48,219 INFO L85 PathProgramCache]: Analyzing trace with hash 480995595, now seen corresponding path program 13 times [2022-01-19 13:44:48,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:44:48,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099713113] [2022-01-19 13:44:48,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:44:48,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:44:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:44:48,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:44:48,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:44:48,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099713113] [2022-01-19 13:44:48,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099713113] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:44:48,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:44:48,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:44:48,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091893492] [2022-01-19 13:44:48,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:44:48,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:44:48,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:44:48,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:44:48,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:44:48,361 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 165 [2022-01-19 13:44:48,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 594 transitions, 9281 flow. Second operand has 10 states, 10 states have (on average 115.9) internal successors, (1159), 10 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:48,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:44:48,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 165 [2022-01-19 13:44:48,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:44:55,072 INFO L129 PetriNetUnfolder]: 27397/48818 cut-off events. [2022-01-19 13:44:55,072 INFO L130 PetriNetUnfolder]: For 500100/500129 co-relation queries the response was YES. [2022-01-19 13:44:55,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 275584 conditions, 48818 events. 27397/48818 cut-off events. For 500100/500129 co-relation queries the response was YES. Maximal size of possible extension queue 1838. Compared 456899 event pairs, 4803 based on Foata normal form. 1293/49104 useless extension candidates. Maximal degree in co-relation 70927. Up to 13911 conditions per place. [2022-01-19 13:44:55,591 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 275 selfloop transitions, 472 changer transitions 1/840 dead transitions. [2022-01-19 13:44:55,591 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 840 transitions, 13432 flow [2022-01-19 13:44:55,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 13:44:55,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 13:44:55,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1429 transitions. [2022-01-19 13:44:55,592 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.78732782369146 [2022-01-19 13:44:55,592 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1429 transitions. [2022-01-19 13:44:55,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1429 transitions. [2022-01-19 13:44:55,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:44:55,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1429 transitions. [2022-01-19 13:44:55,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 129.9090909090909) internal successors, (1429), 11 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:55,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 165.0) internal successors, (1980), 12 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:55,596 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 165.0) internal successors, (1980), 12 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:55,596 INFO L186 Difference]: Start difference. First operand has 213 places, 594 transitions, 9281 flow. Second operand 11 states and 1429 transitions. [2022-01-19 13:44:55,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 840 transitions, 13432 flow [2022-01-19 13:44:56,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 840 transitions, 12585 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-01-19 13:44:56,445 INFO L242 Difference]: Finished difference. Result has 217 places, 674 transitions, 11261 flow [2022-01-19 13:44:56,446 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=8591, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=392, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11261, PETRI_PLACES=217, PETRI_TRANSITIONS=674} [2022-01-19 13:44:56,446 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 58 predicate places. [2022-01-19 13:44:56,446 INFO L470 AbstractCegarLoop]: Abstraction has has 217 places, 674 transitions, 11261 flow [2022-01-19 13:44:56,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 115.9) internal successors, (1159), 10 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:56,447 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:44:56,447 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:44:56,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 13:44:56,447 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:44:56,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:44:56,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1373239683, now seen corresponding path program 14 times [2022-01-19 13:44:56,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:44:56,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891252426] [2022-01-19 13:44:56,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:44:56,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:44:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:44:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:44:56,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:44:56,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891252426] [2022-01-19 13:44:56,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891252426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:44:56,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:44:56,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 13:44:56,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574470997] [2022-01-19 13:44:56,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:44:56,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 13:44:56,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:44:56,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 13:44:56,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-01-19 13:44:56,527 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:44:56,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 674 transitions, 11261 flow. Second operand has 9 states, 9 states have (on average 125.33333333333333) internal successors, (1128), 9 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:44:56,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:44:56,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:44:56,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:45:00,850 INFO L129 PetriNetUnfolder]: 15479/30504 cut-off events. [2022-01-19 13:45:00,850 INFO L130 PetriNetUnfolder]: For 380728/396936 co-relation queries the response was YES. [2022-01-19 13:45:01,039 INFO L84 FinitePrefix]: Finished finitePrefix Result has 173496 conditions, 30504 events. 15479/30504 cut-off events. For 380728/396936 co-relation queries the response was YES. Maximal size of possible extension queue 1511. Compared 307498 event pairs, 2037 based on Foata normal form. 4530/33345 useless extension candidates. Maximal degree in co-relation 59822. Up to 8008 conditions per place. [2022-01-19 13:45:01,206 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 113 selfloop transitions, 569 changer transitions 2/795 dead transitions. [2022-01-19 13:45:01,206 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 795 transitions, 14273 flow [2022-01-19 13:45:01,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 13:45:01,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 13:45:01,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1230 transitions. [2022-01-19 13:45:01,207 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8282828282828283 [2022-01-19 13:45:01,207 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1230 transitions. [2022-01-19 13:45:01,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1230 transitions. [2022-01-19 13:45:01,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:45:01,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1230 transitions. [2022-01-19 13:45:01,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.66666666666666) internal successors, (1230), 9 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:01,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:01,210 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:01,210 INFO L186 Difference]: Start difference. First operand has 217 places, 674 transitions, 11261 flow. Second operand 9 states and 1230 transitions. [2022-01-19 13:45:01,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 795 transitions, 14273 flow [2022-01-19 13:45:01,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 795 transitions, 13582 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-01-19 13:45:01,631 INFO L242 Difference]: Finished difference. Result has 219 places, 728 transitions, 13091 flow [2022-01-19 13:45:01,632 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=10637, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=514, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13091, PETRI_PLACES=219, PETRI_TRANSITIONS=728} [2022-01-19 13:45:01,632 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 60 predicate places. [2022-01-19 13:45:01,632 INFO L470 AbstractCegarLoop]: Abstraction has has 219 places, 728 transitions, 13091 flow [2022-01-19 13:45:01,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 125.33333333333333) internal successors, (1128), 9 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:01,633 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:45:01,633 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:45:01,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 13:45:01,633 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:45:01,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:45:01,633 INFO L85 PathProgramCache]: Analyzing trace with hash -607118811, now seen corresponding path program 15 times [2022-01-19 13:45:01,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:45:01,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819195900] [2022-01-19 13:45:01,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:45:01,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:45:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:45:01,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:45:01,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:45:01,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819195900] [2022-01-19 13:45:01,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819195900] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:45:01,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:45:01,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 13:45:01,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37853997] [2022-01-19 13:45:01,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:45:01,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 13:45:01,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:45:01,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 13:45:01,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-19 13:45:01,716 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:45:01,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 728 transitions, 13091 flow. Second operand has 8 states, 8 states have (on average 125.875) internal successors, (1007), 8 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:01,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:45:01,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:45:01,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:45:06,416 INFO L129 PetriNetUnfolder]: 15027/31282 cut-off events. [2022-01-19 13:45:06,417 INFO L130 PetriNetUnfolder]: For 403358/418218 co-relation queries the response was YES. [2022-01-19 13:45:06,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177232 conditions, 31282 events. 15027/31282 cut-off events. For 403358/418218 co-relation queries the response was YES. Maximal size of possible extension queue 1606. Compared 330068 event pairs, 2122 based on Foata normal form. 4131/33816 useless extension candidates. Maximal degree in co-relation 57623. Up to 7362 conditions per place. [2022-01-19 13:45:06,765 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 156 selfloop transitions, 554 changer transitions 3/824 dead transitions. [2022-01-19 13:45:06,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 824 transitions, 15613 flow [2022-01-19 13:45:06,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 13:45:06,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 13:45:06,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1093 transitions. [2022-01-19 13:45:06,766 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.828030303030303 [2022-01-19 13:45:06,766 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1093 transitions. [2022-01-19 13:45:06,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1093 transitions. [2022-01-19 13:45:06,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:45:06,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1093 transitions. [2022-01-19 13:45:06,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 136.625) internal successors, (1093), 8 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:06,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:06,769 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:06,769 INFO L186 Difference]: Start difference. First operand has 219 places, 728 transitions, 13091 flow. Second operand 8 states and 1093 transitions. [2022-01-19 13:45:06,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 824 transitions, 15613 flow [2022-01-19 13:45:07,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 824 transitions, 14827 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 13:45:07,146 INFO L242 Difference]: Finished difference. Result has 221 places, 756 transitions, 14219 flow [2022-01-19 13:45:07,147 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=12327, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=524, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14219, PETRI_PLACES=221, PETRI_TRANSITIONS=756} [2022-01-19 13:45:07,147 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 62 predicate places. [2022-01-19 13:45:07,147 INFO L470 AbstractCegarLoop]: Abstraction has has 221 places, 756 transitions, 14219 flow [2022-01-19 13:45:07,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 125.875) internal successors, (1007), 8 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:07,147 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:45:07,148 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:45:07,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 13:45:07,148 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:45:07,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:45:07,148 INFO L85 PathProgramCache]: Analyzing trace with hash 477228837, now seen corresponding path program 16 times [2022-01-19 13:45:07,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:45:07,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007845178] [2022-01-19 13:45:07,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:45:07,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:45:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:45:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:45:07,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:45:07,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007845178] [2022-01-19 13:45:07,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007845178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:45:07,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:45:07,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 13:45:07,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592724469] [2022-01-19 13:45:07,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:45:07,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 13:45:07,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:45:07,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 13:45:07,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-01-19 13:45:07,248 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:45:07,249 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 756 transitions, 14219 flow. Second operand has 9 states, 9 states have (on average 125.33333333333333) internal successors, (1128), 9 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:07,249 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:45:07,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:45:07,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:45:12,120 INFO L129 PetriNetUnfolder]: 14582/30749 cut-off events. [2022-01-19 13:45:12,121 INFO L130 PetriNetUnfolder]: For 429130/443928 co-relation queries the response was YES. [2022-01-19 13:45:12,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177544 conditions, 30749 events. 14582/30749 cut-off events. For 429130/443928 co-relation queries the response was YES. Maximal size of possible extension queue 1541. Compared 328445 event pairs, 1991 based on Foata normal form. 4231/33535 useless extension candidates. Maximal degree in co-relation 101100. Up to 6722 conditions per place. [2022-01-19 13:45:12,474 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 181 selfloop transitions, 617 changer transitions 5/914 dead transitions. [2022-01-19 13:45:12,474 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 914 transitions, 17974 flow [2022-01-19 13:45:12,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 13:45:12,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 13:45:12,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1367 transitions. [2022-01-19 13:45:12,475 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8284848484848485 [2022-01-19 13:45:12,475 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1367 transitions. [2022-01-19 13:45:12,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1367 transitions. [2022-01-19 13:45:12,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:45:12,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1367 transitions. [2022-01-19 13:45:12,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 136.7) internal successors, (1367), 10 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:12,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:12,478 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:12,478 INFO L186 Difference]: Start difference. First operand has 221 places, 756 transitions, 14219 flow. Second operand 10 states and 1367 transitions. [2022-01-19 13:45:12,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 914 transitions, 17974 flow [2022-01-19 13:45:12,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 914 transitions, 17002 flow, removed 8 selfloop flow, removed 7 redundant places. [2022-01-19 13:45:12,846 INFO L242 Difference]: Finished difference. Result has 225 places, 819 transitions, 16178 flow [2022-01-19 13:45:12,847 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=13344, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=756, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=552, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16178, PETRI_PLACES=225, PETRI_TRANSITIONS=819} [2022-01-19 13:45:12,847 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 66 predicate places. [2022-01-19 13:45:12,847 INFO L470 AbstractCegarLoop]: Abstraction has has 225 places, 819 transitions, 16178 flow [2022-01-19 13:45:12,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 125.33333333333333) internal successors, (1128), 9 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:12,847 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:45:12,847 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:45:12,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 13:45:12,848 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:45:12,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:45:12,848 INFO L85 PathProgramCache]: Analyzing trace with hash 149891473, now seen corresponding path program 17 times [2022-01-19 13:45:12,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:45:12,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382865370] [2022-01-19 13:45:12,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:45:12,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:45:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:45:12,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:45:12,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:45:12,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382865370] [2022-01-19 13:45:12,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382865370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:45:12,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:45:12,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 13:45:12,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357585868] [2022-01-19 13:45:12,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:45:12,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 13:45:12,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:45:12,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 13:45:12,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-01-19 13:45:12,930 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:45:12,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 819 transitions, 16178 flow. Second operand has 9 states, 9 states have (on average 125.33333333333333) internal successors, (1128), 9 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:12,931 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:45:12,931 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:45:12,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:45:17,968 INFO L129 PetriNetUnfolder]: 13644/29622 cut-off events. [2022-01-19 13:45:17,968 INFO L130 PetriNetUnfolder]: For 430811/442925 co-relation queries the response was YES. [2022-01-19 13:45:18,130 INFO L84 FinitePrefix]: Finished finitePrefix Result has 172092 conditions, 29622 events. 13644/29622 cut-off events. For 430811/442925 co-relation queries the response was YES. Maximal size of possible extension queue 1532. Compared 321492 event pairs, 1995 based on Foata normal form. 3362/31557 useless extension candidates. Maximal degree in co-relation 66242. Up to 6385 conditions per place. [2022-01-19 13:45:18,275 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 177 selfloop transitions, 667 changer transitions 13/968 dead transitions. [2022-01-19 13:45:18,276 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 968 transitions, 19921 flow [2022-01-19 13:45:18,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 13:45:18,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 13:45:18,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1364 transitions. [2022-01-19 13:45:18,277 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8266666666666667 [2022-01-19 13:45:18,277 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1364 transitions. [2022-01-19 13:45:18,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1364 transitions. [2022-01-19 13:45:18,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:45:18,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1364 transitions. [2022-01-19 13:45:18,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 136.4) internal successors, (1364), 10 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:18,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:18,280 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:18,280 INFO L186 Difference]: Start difference. First operand has 225 places, 819 transitions, 16178 flow. Second operand 10 states and 1364 transitions. [2022-01-19 13:45:18,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 968 transitions, 19921 flow [2022-01-19 13:45:18,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 968 transitions, 19793 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 13:45:18,668 INFO L242 Difference]: Finished difference. Result has 232 places, 869 transitions, 18793 flow [2022-01-19 13:45:18,669 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=15990, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=816, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=606, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18793, PETRI_PLACES=232, PETRI_TRANSITIONS=869} [2022-01-19 13:45:18,669 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 73 predicate places. [2022-01-19 13:45:18,669 INFO L470 AbstractCegarLoop]: Abstraction has has 232 places, 869 transitions, 18793 flow [2022-01-19 13:45:18,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 125.33333333333333) internal successors, (1128), 9 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:18,669 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:45:18,670 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:45:18,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 13:45:18,670 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:45:18,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:45:18,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1012830015, now seen corresponding path program 18 times [2022-01-19 13:45:18,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:45:18,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822729900] [2022-01-19 13:45:18,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:45:18,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:45:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:45:18,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:45:18,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:45:18,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822729900] [2022-01-19 13:45:18,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822729900] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:45:18,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:45:18,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:45:18,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156963100] [2022-01-19 13:45:18,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:45:18,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:45:18,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:45:18,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:45:18,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:45:18,782 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 165 [2022-01-19 13:45:18,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 869 transitions, 18793 flow. Second operand has 10 states, 10 states have (on average 115.9) internal successors, (1159), 10 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:18,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:45:18,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 165 [2022-01-19 13:45:18,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:45:27,247 INFO L129 PetriNetUnfolder]: 23301/42640 cut-off events. [2022-01-19 13:45:27,247 INFO L130 PetriNetUnfolder]: For 644544/644544 co-relation queries the response was YES. [2022-01-19 13:45:27,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 278365 conditions, 42640 events. 23301/42640 cut-off events. For 644544/644544 co-relation queries the response was YES. Maximal size of possible extension queue 1766. Compared 413297 event pairs, 2775 based on Foata normal form. 249/42095 useless extension candidates. Maximal degree in co-relation 100418. Up to 13889 conditions per place. [2022-01-19 13:45:27,753 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 211 selfloop transitions, 741 changer transitions 5/1049 dead transitions. [2022-01-19 13:45:27,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 1049 transitions, 22120 flow [2022-01-19 13:45:27,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 13:45:27,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 13:45:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1428 transitions. [2022-01-19 13:45:27,755 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7867768595041322 [2022-01-19 13:45:27,755 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1428 transitions. [2022-01-19 13:45:27,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1428 transitions. [2022-01-19 13:45:27,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:45:27,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1428 transitions. [2022-01-19 13:45:27,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 129.8181818181818) internal successors, (1428), 11 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:27,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 165.0) internal successors, (1980), 12 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:27,758 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 165.0) internal successors, (1980), 12 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:27,758 INFO L186 Difference]: Start difference. First operand has 232 places, 869 transitions, 18793 flow. Second operand 11 states and 1428 transitions. [2022-01-19 13:45:27,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 1049 transitions, 22120 flow [2022-01-19 13:45:29,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 1049 transitions, 21984 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 13:45:29,045 INFO L242 Difference]: Finished difference. Result has 240 places, 900 transitions, 20926 flow [2022-01-19 13:45:29,045 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=18665, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=869, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=710, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=20926, PETRI_PLACES=240, PETRI_TRANSITIONS=900} [2022-01-19 13:45:29,045 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 81 predicate places. [2022-01-19 13:45:29,046 INFO L470 AbstractCegarLoop]: Abstraction has has 240 places, 900 transitions, 20926 flow [2022-01-19 13:45:29,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 115.9) internal successors, (1159), 10 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:29,046 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:45:29,046 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:45:29,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-19 13:45:29,046 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:45:29,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:45:29,046 INFO L85 PathProgramCache]: Analyzing trace with hash 687054829, now seen corresponding path program 19 times [2022-01-19 13:45:29,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:45:29,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397640659] [2022-01-19 13:45:29,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:45:29,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:45:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:45:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:45:29,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:45:29,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397640659] [2022-01-19 13:45:29,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397640659] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:45:29,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:45:29,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:45:29,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998243906] [2022-01-19 13:45:29,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:45:29,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:45:29,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:45:29,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:45:29,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:45:29,159 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 165 [2022-01-19 13:45:29,160 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 900 transitions, 20926 flow. Second operand has 10 states, 10 states have (on average 115.9) internal successors, (1159), 10 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:29,160 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:45:29,160 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 165 [2022-01-19 13:45:29,160 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:45:34,950 INFO L129 PetriNetUnfolder]: 14114/28108 cut-off events. [2022-01-19 13:45:34,951 INFO L130 PetriNetUnfolder]: For 446043/446057 co-relation queries the response was YES. [2022-01-19 13:45:35,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193679 conditions, 28108 events. 14114/28108 cut-off events. For 446043/446057 co-relation queries the response was YES. Maximal size of possible extension queue 1334. Compared 277297 event pairs, 2090 based on Foata normal form. 1479/28910 useless extension candidates. Maximal degree in co-relation 113960. Up to 6832 conditions per place. [2022-01-19 13:45:35,273 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 252 selfloop transitions, 742 changer transitions 56/1142 dead transitions. [2022-01-19 13:45:35,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 1142 transitions, 26811 flow [2022-01-19 13:45:35,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 13:45:35,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 13:45:35,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1421 transitions. [2022-01-19 13:45:35,274 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7829201101928375 [2022-01-19 13:45:35,274 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1421 transitions. [2022-01-19 13:45:35,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1421 transitions. [2022-01-19 13:45:35,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:45:35,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1421 transitions. [2022-01-19 13:45:35,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 129.1818181818182) internal successors, (1421), 11 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:35,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 165.0) internal successors, (1980), 12 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:35,277 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 165.0) internal successors, (1980), 12 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:35,277 INFO L186 Difference]: Start difference. First operand has 240 places, 900 transitions, 20926 flow. Second operand 11 states and 1421 transitions. [2022-01-19 13:45:35,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 1142 transitions, 26811 flow [2022-01-19 13:45:36,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 1142 transitions, 25287 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-01-19 13:45:36,311 INFO L242 Difference]: Finished difference. Result has 245 places, 950 transitions, 22998 flow [2022-01-19 13:45:36,311 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=18826, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=870, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=644, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=22998, PETRI_PLACES=245, PETRI_TRANSITIONS=950} [2022-01-19 13:45:36,312 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 86 predicate places. [2022-01-19 13:45:36,312 INFO L470 AbstractCegarLoop]: Abstraction has has 245 places, 950 transitions, 22998 flow [2022-01-19 13:45:36,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 115.9) internal successors, (1159), 10 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:36,312 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:45:36,312 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:45:36,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 13:45:36,312 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:45:36,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:45:36,312 INFO L85 PathProgramCache]: Analyzing trace with hash 674938377, now seen corresponding path program 20 times [2022-01-19 13:45:36,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:45:36,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747730839] [2022-01-19 13:45:36,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:45:36,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:45:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:45:36,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:45:36,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:45:36,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747730839] [2022-01-19 13:45:36,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747730839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:45:36,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:45:36,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:45:36,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517737040] [2022-01-19 13:45:36,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:45:36,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:45:36,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:45:36,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:45:36,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:45:36,396 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:45:36,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 950 transitions, 22998 flow. Second operand has 10 states, 10 states have (on average 124.9) internal successors, (1249), 10 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:36,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:45:36,397 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:45:36,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:45:40,642 INFO L129 PetriNetUnfolder]: 8623/20282 cut-off events. [2022-01-19 13:45:40,643 INFO L130 PetriNetUnfolder]: For 362594/369465 co-relation queries the response was YES. [2022-01-19 13:45:40,777 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137246 conditions, 20282 events. 8623/20282 cut-off events. For 362594/369465 co-relation queries the response was YES. Maximal size of possible extension queue 1106. Compared 218908 event pairs, 964 based on Foata normal form. 2455/21922 useless extension candidates. Maximal degree in co-relation 59589. Up to 4193 conditions per place. [2022-01-19 13:45:40,869 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 125 selfloop transitions, 863 changer transitions 39/1138 dead transitions. [2022-01-19 13:45:40,869 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 1138 transitions, 28351 flow [2022-01-19 13:45:40,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 13:45:40,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 13:45:40,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1498 transitions. [2022-01-19 13:45:40,870 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8253443526170798 [2022-01-19 13:45:40,870 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1498 transitions. [2022-01-19 13:45:40,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1498 transitions. [2022-01-19 13:45:40,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:45:40,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1498 transitions. [2022-01-19 13:45:40,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 136.1818181818182) internal successors, (1498), 11 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:40,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 165.0) internal successors, (1980), 12 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:40,873 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 165.0) internal successors, (1980), 12 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:40,873 INFO L186 Difference]: Start difference. First operand has 245 places, 950 transitions, 22998 flow. Second operand 11 states and 1498 transitions. [2022-01-19 13:45:40,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 1138 transitions, 28351 flow [2022-01-19 13:45:41,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 1138 transitions, 28020 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-01-19 13:45:41,700 INFO L242 Difference]: Finished difference. Result has 251 places, 1022 transitions, 26649 flow [2022-01-19 13:45:41,701 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=22700, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=950, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=767, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=26649, PETRI_PLACES=251, PETRI_TRANSITIONS=1022} [2022-01-19 13:45:41,701 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 92 predicate places. [2022-01-19 13:45:41,701 INFO L470 AbstractCegarLoop]: Abstraction has has 251 places, 1022 transitions, 26649 flow [2022-01-19 13:45:41,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 124.9) internal successors, (1249), 10 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:41,701 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:45:41,702 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:45:41,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-19 13:45:41,702 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:45:41,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:45:41,702 INFO L85 PathProgramCache]: Analyzing trace with hash -2131165535, now seen corresponding path program 21 times [2022-01-19 13:45:41,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:45:41,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845836970] [2022-01-19 13:45:41,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:45:41,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:45:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:45:41,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:45:41,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:45:41,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845836970] [2022-01-19 13:45:41,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845836970] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:45:41,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:45:41,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 13:45:41,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903886948] [2022-01-19 13:45:41,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:45:41,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 13:45:41,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:45:41,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 13:45:41,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-19 13:45:41,788 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:45:41,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 1022 transitions, 26649 flow. Second operand has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:41,789 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:45:41,789 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:45:41,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:45:46,659 INFO L129 PetriNetUnfolder]: 8579/21312 cut-off events. [2022-01-19 13:45:46,659 INFO L130 PetriNetUnfolder]: For 442446/450043 co-relation queries the response was YES. [2022-01-19 13:45:46,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148542 conditions, 21312 events. 8579/21312 cut-off events. For 442446/450043 co-relation queries the response was YES. Maximal size of possible extension queue 1216. Compared 239704 event pairs, 1093 based on Foata normal form. 2411/22916 useless extension candidates. Maximal degree in co-relation 64724. Up to 4338 conditions per place. [2022-01-19 13:45:46,918 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 160 selfloop transitions, 979 changer transitions 34/1284 dead transitions. [2022-01-19 13:45:46,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 1284 transitions, 34068 flow [2022-01-19 13:45:46,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-19 13:45:46,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-01-19 13:45:46,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1908 transitions. [2022-01-19 13:45:46,919 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.825974025974026 [2022-01-19 13:45:46,919 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1908 transitions. [2022-01-19 13:45:46,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1908 transitions. [2022-01-19 13:45:46,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:45:46,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1908 transitions. [2022-01-19 13:45:46,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 136.28571428571428) internal successors, (1908), 14 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:46,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 165.0) internal successors, (2475), 15 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:46,923 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 165.0) internal successors, (2475), 15 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:46,923 INFO L186 Difference]: Start difference. First operand has 251 places, 1022 transitions, 26649 flow. Second operand 14 states and 1908 transitions. [2022-01-19 13:45:46,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 1284 transitions, 34068 flow [2022-01-19 13:45:48,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 1284 transitions, 33443 flow, removed 11 selfloop flow, removed 6 redundant places. [2022-01-19 13:45:48,182 INFO L242 Difference]: Finished difference. Result has 261 places, 1138 transitions, 31502 flow [2022-01-19 13:45:48,183 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=26034, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1018, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=838, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=31502, PETRI_PLACES=261, PETRI_TRANSITIONS=1138} [2022-01-19 13:45:48,183 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 102 predicate places. [2022-01-19 13:45:48,183 INFO L470 AbstractCegarLoop]: Abstraction has has 261 places, 1138 transitions, 31502 flow [2022-01-19 13:45:48,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:48,184 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:45:48,184 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:45:48,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 13:45:48,184 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:45:48,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:45:48,184 INFO L85 PathProgramCache]: Analyzing trace with hash 449738703, now seen corresponding path program 22 times [2022-01-19 13:45:48,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:45:48,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563054650] [2022-01-19 13:45:48,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:45:48,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:45:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:45:48,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:45:48,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:45:48,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563054650] [2022-01-19 13:45:48,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563054650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:45:48,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:45:48,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 13:45:48,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236439294] [2022-01-19 13:45:48,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:45:48,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 13:45:48,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:45:48,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 13:45:48,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-19 13:45:48,279 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:45:48,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 1138 transitions, 31502 flow. Second operand has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:48,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:45:48,280 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:45:48,280 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:45:53,619 INFO L129 PetriNetUnfolder]: 8582/21892 cut-off events. [2022-01-19 13:45:53,620 INFO L130 PetriNetUnfolder]: For 500025/507571 co-relation queries the response was YES. [2022-01-19 13:45:53,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157580 conditions, 21892 events. 8582/21892 cut-off events. For 500025/507571 co-relation queries the response was YES. Maximal size of possible extension queue 1269. Compared 252427 event pairs, 976 based on Foata normal form. 2078/23177 useless extension candidates. Maximal degree in co-relation 95043. Up to 4433 conditions per place. [2022-01-19 13:45:54,087 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 154 selfloop transitions, 1023 changer transitions 52/1340 dead transitions. [2022-01-19 13:45:54,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 1340 transitions, 37317 flow [2022-01-19 13:45:54,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-19 13:45:54,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-01-19 13:45:54,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1902 transitions. [2022-01-19 13:45:54,088 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8233766233766234 [2022-01-19 13:45:54,088 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1902 transitions. [2022-01-19 13:45:54,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1902 transitions. [2022-01-19 13:45:54,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:45:54,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1902 transitions. [2022-01-19 13:45:54,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 135.85714285714286) internal successors, (1902), 14 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:54,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 165.0) internal successors, (2475), 15 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:54,092 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 165.0) internal successors, (2475), 15 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:54,092 INFO L186 Difference]: Start difference. First operand has 261 places, 1138 transitions, 31502 flow. Second operand 14 states and 1902 transitions. [2022-01-19 13:45:54,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 1340 transitions, 37317 flow [2022-01-19 13:45:55,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 1340 transitions, 36477 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-01-19 13:45:55,320 INFO L242 Difference]: Finished difference. Result has 271 places, 1182 transitions, 33729 flow [2022-01-19 13:45:55,321 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=30754, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=937, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=33729, PETRI_PLACES=271, PETRI_TRANSITIONS=1182} [2022-01-19 13:45:55,321 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 112 predicate places. [2022-01-19 13:45:55,321 INFO L470 AbstractCegarLoop]: Abstraction has has 271 places, 1182 transitions, 33729 flow [2022-01-19 13:45:55,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:55,321 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:45:55,321 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:45:55,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-19 13:45:55,322 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:45:55,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:45:55,322 INFO L85 PathProgramCache]: Analyzing trace with hash -560873309, now seen corresponding path program 23 times [2022-01-19 13:45:55,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:45:55,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97590196] [2022-01-19 13:45:55,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:45:55,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:45:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:45:55,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:45:55,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:45:55,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97590196] [2022-01-19 13:45:55,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97590196] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:45:55,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:45:55,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 13:45:55,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298917860] [2022-01-19 13:45:55,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:45:55,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 13:45:55,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:45:55,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 13:45:55,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-19 13:45:55,422 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:45:55,423 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 1182 transitions, 33729 flow. Second operand has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:45:55,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:45:55,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:45:55,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:46:01,248 INFO L129 PetriNetUnfolder]: 8382/21715 cut-off events. [2022-01-19 13:46:01,248 INFO L130 PetriNetUnfolder]: For 555200/561610 co-relation queries the response was YES. [2022-01-19 13:46:01,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163554 conditions, 21715 events. 8382/21715 cut-off events. For 555200/561610 co-relation queries the response was YES. Maximal size of possible extension queue 1308. Compared 253808 event pairs, 1083 based on Foata normal form. 1902/22811 useless extension candidates. Maximal degree in co-relation 81573. Up to 4467 conditions per place. [2022-01-19 13:46:01,520 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 144 selfloop transitions, 1043 changer transitions 94/1392 dead transitions. [2022-01-19 13:46:01,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 1392 transitions, 40567 flow [2022-01-19 13:46:01,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-19 13:46:01,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-01-19 13:46:01,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1900 transitions. [2022-01-19 13:46:01,521 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8225108225108225 [2022-01-19 13:46:01,522 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1900 transitions. [2022-01-19 13:46:01,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1900 transitions. [2022-01-19 13:46:01,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:46:01,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1900 transitions. [2022-01-19 13:46:01,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 135.71428571428572) internal successors, (1900), 14 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:01,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 165.0) internal successors, (2475), 15 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:01,525 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 165.0) internal successors, (2475), 15 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:01,525 INFO L186 Difference]: Start difference. First operand has 271 places, 1182 transitions, 33729 flow. Second operand 14 states and 1900 transitions. [2022-01-19 13:46:01,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 1392 transitions, 40567 flow [2022-01-19 13:46:03,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 1392 transitions, 39142 flow, removed 22 selfloop flow, removed 8 redundant places. [2022-01-19 13:46:03,268 INFO L242 Difference]: Finished difference. Result has 278 places, 1202 transitions, 34772 flow [2022-01-19 13:46:03,269 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=32457, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=945, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=34772, PETRI_PLACES=278, PETRI_TRANSITIONS=1202} [2022-01-19 13:46:03,270 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 119 predicate places. [2022-01-19 13:46:03,270 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 1202 transitions, 34772 flow [2022-01-19 13:46:03,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:03,270 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:46:03,270 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:46:03,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-19 13:46:03,270 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:46:03,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:46:03,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1307665657, now seen corresponding path program 24 times [2022-01-19 13:46:03,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:46:03,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46919180] [2022-01-19 13:46:03,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:46:03,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:46:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:46:03,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:46:03,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:46:03,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46919180] [2022-01-19 13:46:03,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46919180] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:46:03,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:46:03,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 13:46:03,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438513908] [2022-01-19 13:46:03,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:46:03,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 13:46:03,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:46:03,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 13:46:03,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-19 13:46:03,389 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:46:03,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 1202 transitions, 34772 flow. Second operand has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:03,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:46:03,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:46:03,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:46:08,936 INFO L129 PetriNetUnfolder]: 7191/19649 cut-off events. [2022-01-19 13:46:08,937 INFO L130 PetriNetUnfolder]: For 523832/529639 co-relation queries the response was YES. [2022-01-19 13:46:09,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152703 conditions, 19649 events. 7191/19649 cut-off events. For 523832/529639 co-relation queries the response was YES. Maximal size of possible extension queue 1262. Compared 233728 event pairs, 814 based on Foata normal form. 2021/20974 useless extension candidates. Maximal degree in co-relation 105532. Up to 4128 conditions per place. [2022-01-19 13:46:09,150 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 156 selfloop transitions, 1048 changer transitions 112/1427 dead transitions. [2022-01-19 13:46:09,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 1427 transitions, 41730 flow [2022-01-19 13:46:09,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-19 13:46:09,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-01-19 13:46:09,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1907 transitions. [2022-01-19 13:46:09,152 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8255411255411256 [2022-01-19 13:46:09,152 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1907 transitions. [2022-01-19 13:46:09,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1907 transitions. [2022-01-19 13:46:09,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:46:09,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1907 transitions. [2022-01-19 13:46:09,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 136.21428571428572) internal successors, (1907), 14 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:09,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 165.0) internal successors, (2475), 15 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:09,155 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 165.0) internal successors, (2475), 15 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:09,155 INFO L186 Difference]: Start difference. First operand has 278 places, 1202 transitions, 34772 flow. Second operand 14 states and 1907 transitions. [2022-01-19 13:46:09,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 1427 transitions, 41730 flow [2022-01-19 13:46:10,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 1427 transitions, 41605 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-01-19 13:46:10,686 INFO L242 Difference]: Finished difference. Result has 290 places, 1205 transitions, 36379 flow [2022-01-19 13:46:10,687 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=34446, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=939, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=36379, PETRI_PLACES=290, PETRI_TRANSITIONS=1205} [2022-01-19 13:46:10,687 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 131 predicate places. [2022-01-19 13:46:10,687 INFO L470 AbstractCegarLoop]: Abstraction has has 290 places, 1205 transitions, 36379 flow [2022-01-19 13:46:10,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:10,688 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:46:10,688 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:46:10,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-19 13:46:10,688 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:46:10,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:46:10,688 INFO L85 PathProgramCache]: Analyzing trace with hash -2145194715, now seen corresponding path program 25 times [2022-01-19 13:46:10,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:46:10,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208161567] [2022-01-19 13:46:10,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:46:10,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:46:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:46:10,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:46:10,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:46:10,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208161567] [2022-01-19 13:46:10,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208161567] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:46:10,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:46:10,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:46:10,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384061874] [2022-01-19 13:46:10,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:46:10,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:46:10,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:46:10,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:46:10,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:46:10,771 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:46:10,772 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 1205 transitions, 36379 flow. Second operand has 10 states, 10 states have (on average 124.9) internal successors, (1249), 10 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:10,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:46:10,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:46:10,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:46:15,345 INFO L129 PetriNetUnfolder]: 6096/16699 cut-off events. [2022-01-19 13:46:15,345 INFO L130 PetriNetUnfolder]: For 479629/484041 co-relation queries the response was YES. [2022-01-19 13:46:15,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131979 conditions, 16699 events. 6096/16699 cut-off events. For 479629/484041 co-relation queries the response was YES. Maximal size of possible extension queue 1048. Compared 193442 event pairs, 810 based on Foata normal form. 1258/17290 useless extension candidates. Maximal degree in co-relation 67277. Up to 3543 conditions per place. [2022-01-19 13:46:15,703 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 99 selfloop transitions, 1071 changer transitions 2/1283 dead transitions. [2022-01-19 13:46:15,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 1283 transitions, 39438 flow [2022-01-19 13:46:15,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 13:46:15,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 13:46:15,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1617 transitions. [2022-01-19 13:46:15,705 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-01-19 13:46:15,705 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1617 transitions. [2022-01-19 13:46:15,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1617 transitions. [2022-01-19 13:46:15,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:46:15,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1617 transitions. [2022-01-19 13:46:15,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 134.75) internal successors, (1617), 12 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:15,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 165.0) internal successors, (2145), 13 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:15,708 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 165.0) internal successors, (2145), 13 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:15,708 INFO L186 Difference]: Start difference. First operand has 290 places, 1205 transitions, 36379 flow. Second operand 12 states and 1617 transitions. [2022-01-19 13:46:15,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 1283 transitions, 39438 flow [2022-01-19 13:46:16,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 1283 transitions, 39318 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-01-19 13:46:16,829 INFO L242 Difference]: Finished difference. Result has 298 places, 1213 transitions, 38546 flow [2022-01-19 13:46:16,830 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=36263, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1063, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=38546, PETRI_PLACES=298, PETRI_TRANSITIONS=1213} [2022-01-19 13:46:16,830 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 139 predicate places. [2022-01-19 13:46:16,830 INFO L470 AbstractCegarLoop]: Abstraction has has 298 places, 1213 transitions, 38546 flow [2022-01-19 13:46:16,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 124.9) internal successors, (1249), 10 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:16,830 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:46:16,831 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:46:16,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-19 13:46:16,831 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:46:16,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:46:16,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1450747203, now seen corresponding path program 26 times [2022-01-19 13:46:16,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:46:16,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425692096] [2022-01-19 13:46:16,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:46:16,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:46:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:46:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:46:16,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:46:16,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425692096] [2022-01-19 13:46:16,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425692096] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:46:16,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:46:16,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-19 13:46:16,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952725802] [2022-01-19 13:46:16,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:46:16,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-19 13:46:16,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:46:16,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-19 13:46:16,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-01-19 13:46:16,929 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:46:16,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 1213 transitions, 38546 flow. Second operand has 13 states, 13 states have (on average 124.0) internal successors, (1612), 13 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:16,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:46:16,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:46:16,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:46:22,075 INFO L129 PetriNetUnfolder]: 6214/17589 cut-off events. [2022-01-19 13:46:22,076 INFO L130 PetriNetUnfolder]: For 558862/562642 co-relation queries the response was YES. [2022-01-19 13:46:22,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142061 conditions, 17589 events. 6214/17589 cut-off events. For 558862/562642 co-relation queries the response was YES. Maximal size of possible extension queue 1110. Compared 207421 event pairs, 759 based on Foata normal form. 1158/18097 useless extension candidates. Maximal degree in co-relation 72409. Up to 3345 conditions per place. [2022-01-19 13:46:22,291 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 112 selfloop transitions, 971 changer transitions 219/1413 dead transitions. [2022-01-19 13:46:22,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 1413 transitions, 44724 flow [2022-01-19 13:46:22,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 13:46:22,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 13:46:22,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2532 transitions. [2022-01-19 13:46:22,293 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8076555023923445 [2022-01-19 13:46:22,293 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2532 transitions. [2022-01-19 13:46:22,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2532 transitions. [2022-01-19 13:46:22,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:46:22,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2532 transitions. [2022-01-19 13:46:22,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.26315789473685) internal successors, (2532), 19 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:22,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 165.0) internal successors, (3300), 20 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:22,298 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 165.0) internal successors, (3300), 20 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:22,298 INFO L186 Difference]: Start difference. First operand has 298 places, 1213 transitions, 38546 flow. Second operand 19 states and 2532 transitions. [2022-01-19 13:46:22,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 1413 transitions, 44724 flow [2022-01-19 13:46:23,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 1413 transitions, 42788 flow, removed 7 selfloop flow, removed 7 redundant places. [2022-01-19 13:46:23,628 INFO L242 Difference]: Finished difference. Result has 311 places, 1113 transitions, 34759 flow [2022-01-19 13:46:23,629 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=36768, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=959, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=34759, PETRI_PLACES=311, PETRI_TRANSITIONS=1113} [2022-01-19 13:46:23,629 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 152 predicate places. [2022-01-19 13:46:23,629 INFO L470 AbstractCegarLoop]: Abstraction has has 311 places, 1113 transitions, 34759 flow [2022-01-19 13:46:23,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 124.0) internal successors, (1612), 13 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:23,629 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:46:23,629 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:46:23,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-19 13:46:23,630 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:46:23,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:46:23,630 INFO L85 PathProgramCache]: Analyzing trace with hash 622859459, now seen corresponding path program 27 times [2022-01-19 13:46:23,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:46:23,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977969479] [2022-01-19 13:46:23,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:46:23,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:46:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:46:23,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:46:23,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:46:23,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977969479] [2022-01-19 13:46:23,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977969479] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:46:23,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:46:23,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-19 13:46:23,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638520529] [2022-01-19 13:46:23,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:46:23,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-19 13:46:23,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:46:23,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-19 13:46:23,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-01-19 13:46:23,727 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:46:23,728 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 1113 transitions, 34759 flow. Second operand has 13 states, 13 states have (on average 124.0) internal successors, (1612), 13 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:23,728 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:46:23,728 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:46:23,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:46:28,237 INFO L129 PetriNetUnfolder]: 5742/16330 cut-off events. [2022-01-19 13:46:28,238 INFO L130 PetriNetUnfolder]: For 532886/536208 co-relation queries the response was YES. [2022-01-19 13:46:28,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132989 conditions, 16330 events. 5742/16330 cut-off events. For 532886/536208 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 191409 event pairs, 770 based on Foata normal form. 1114/16806 useless extension candidates. Maximal degree in co-relation 66601. Up to 2976 conditions per place. [2022-01-19 13:46:28,414 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 144 selfloop transitions, 994 changer transitions 45/1294 dead transitions. [2022-01-19 13:46:28,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 1294 transitions, 39783 flow [2022-01-19 13:46:28,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 13:46:28,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 13:46:28,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2537 transitions. [2022-01-19 13:46:28,416 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8092503987240829 [2022-01-19 13:46:28,416 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2537 transitions. [2022-01-19 13:46:28,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2537 transitions. [2022-01-19 13:46:28,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:46:28,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2537 transitions. [2022-01-19 13:46:28,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.52631578947367) internal successors, (2537), 19 states have internal predecessors, (2537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:28,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 165.0) internal successors, (3300), 20 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:28,421 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 165.0) internal successors, (3300), 20 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:28,421 INFO L186 Difference]: Start difference. First operand has 311 places, 1113 transitions, 34759 flow. Second operand 19 states and 2537 transitions. [2022-01-19 13:46:28,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 1294 transitions, 39783 flow [2022-01-19 13:46:29,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 1294 transitions, 39295 flow, removed 28 selfloop flow, removed 8 redundant places. [2022-01-19 13:46:29,657 INFO L242 Difference]: Finished difference. Result has 319 places, 1135 transitions, 36397 flow [2022-01-19 13:46:29,658 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=34351, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=933, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=36397, PETRI_PLACES=319, PETRI_TRANSITIONS=1135} [2022-01-19 13:46:29,658 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 160 predicate places. [2022-01-19 13:46:29,658 INFO L470 AbstractCegarLoop]: Abstraction has has 319 places, 1135 transitions, 36397 flow [2022-01-19 13:46:29,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 124.0) internal successors, (1612), 13 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:29,658 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:46:29,658 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:46:29,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-19 13:46:29,659 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:46:29,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:46:29,659 INFO L85 PathProgramCache]: Analyzing trace with hash 962210639, now seen corresponding path program 28 times [2022-01-19 13:46:29,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:46:29,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490659934] [2022-01-19 13:46:29,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:46:29,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:46:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:46:29,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:46:29,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:46:29,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490659934] [2022-01-19 13:46:29,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490659934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:46:29,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:46:29,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-19 13:46:29,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890446676] [2022-01-19 13:46:29,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:46:29,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-19 13:46:29,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:46:29,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-19 13:46:29,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-01-19 13:46:29,774 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:46:29,774 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 1135 transitions, 36397 flow. Second operand has 13 states, 13 states have (on average 124.0) internal successors, (1612), 13 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:29,774 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:46:29,774 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:46:29,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:46:34,367 INFO L129 PetriNetUnfolder]: 5786/16206 cut-off events. [2022-01-19 13:46:34,368 INFO L130 PetriNetUnfolder]: For 548467/552119 co-relation queries the response was YES. [2022-01-19 13:46:34,471 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136598 conditions, 16206 events. 5786/16206 cut-off events. For 548467/552119 co-relation queries the response was YES. Maximal size of possible extension queue 997. Compared 189833 event pairs, 786 based on Foata normal form. 1136/16693 useless extension candidates. Maximal degree in co-relation 65594. Up to 3040 conditions per place. [2022-01-19 13:46:34,540 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 138 selfloop transitions, 984 changer transitions 49/1282 dead transitions. [2022-01-19 13:46:34,540 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 1282 transitions, 40669 flow [2022-01-19 13:46:34,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 13:46:34,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 13:46:34,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2531 transitions. [2022-01-19 13:46:34,542 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8073365231259968 [2022-01-19 13:46:34,542 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2531 transitions. [2022-01-19 13:46:34,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2531 transitions. [2022-01-19 13:46:34,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:46:34,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2531 transitions. [2022-01-19 13:46:34,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.21052631578948) internal successors, (2531), 19 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:34,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 165.0) internal successors, (3300), 20 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:34,546 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 165.0) internal successors, (3300), 20 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:34,546 INFO L186 Difference]: Start difference. First operand has 319 places, 1135 transitions, 36397 flow. Second operand 19 states and 2531 transitions. [2022-01-19 13:46:34,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 1282 transitions, 40669 flow [2022-01-19 13:46:35,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 1282 transitions, 40317 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-01-19 13:46:35,796 INFO L242 Difference]: Finished difference. Result has 334 places, 1125 transitions, 37225 flow [2022-01-19 13:46:35,796 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=36063, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=952, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=37225, PETRI_PLACES=334, PETRI_TRANSITIONS=1125} [2022-01-19 13:46:35,797 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 175 predicate places. [2022-01-19 13:46:35,797 INFO L470 AbstractCegarLoop]: Abstraction has has 334 places, 1125 transitions, 37225 flow [2022-01-19 13:46:35,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 124.0) internal successors, (1612), 13 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:35,797 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:46:35,797 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:46:35,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-19 13:46:35,797 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:46:35,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:46:35,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1434264761, now seen corresponding path program 29 times [2022-01-19 13:46:35,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:46:35,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280597572] [2022-01-19 13:46:35,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:46:35,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:46:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:46:35,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:46:35,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:46:35,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280597572] [2022-01-19 13:46:35,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280597572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:46:35,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:46:35,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-19 13:46:35,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554760443] [2022-01-19 13:46:35,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:46:35,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-19 13:46:35,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:46:35,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-19 13:46:35,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-01-19 13:46:35,886 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:46:35,887 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 1125 transitions, 37225 flow. Second operand has 13 states, 13 states have (on average 124.0) internal successors, (1612), 13 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:35,887 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:46:35,887 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:46:35,887 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:46:40,604 INFO L129 PetriNetUnfolder]: 5682/16228 cut-off events. [2022-01-19 13:46:40,604 INFO L130 PetriNetUnfolder]: For 605615/609008 co-relation queries the response was YES. [2022-01-19 13:46:40,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139606 conditions, 16228 events. 5682/16228 cut-off events. For 605615/609008 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 191741 event pairs, 814 based on Foata normal form. 1152/16741 useless extension candidates. Maximal degree in co-relation 68633. Up to 3014 conditions per place. [2022-01-19 13:46:40,843 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 141 selfloop transitions, 979 changer transitions 62/1292 dead transitions. [2022-01-19 13:46:40,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 1292 transitions, 42275 flow [2022-01-19 13:46:40,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 13:46:40,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 13:46:40,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2538 transitions. [2022-01-19 13:46:40,845 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8095693779904306 [2022-01-19 13:46:40,845 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2538 transitions. [2022-01-19 13:46:40,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2538 transitions. [2022-01-19 13:46:40,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:46:40,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2538 transitions. [2022-01-19 13:46:40,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.57894736842104) internal successors, (2538), 19 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:40,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 165.0) internal successors, (3300), 20 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:40,849 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 165.0) internal successors, (3300), 20 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:40,849 INFO L186 Difference]: Start difference. First operand has 334 places, 1125 transitions, 37225 flow. Second operand 19 states and 2538 transitions. [2022-01-19 13:46:40,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 1292 transitions, 42275 flow [2022-01-19 13:46:42,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 1292 transitions, 42114 flow, removed 20 selfloop flow, removed 6 redundant places. [2022-01-19 13:46:42,401 INFO L242 Difference]: Finished difference. Result has 348 places, 1119 transitions, 38611 flow [2022-01-19 13:46:42,402 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=37083, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=937, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=38611, PETRI_PLACES=348, PETRI_TRANSITIONS=1119} [2022-01-19 13:46:42,402 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 189 predicate places. [2022-01-19 13:46:42,402 INFO L470 AbstractCegarLoop]: Abstraction has has 348 places, 1119 transitions, 38611 flow [2022-01-19 13:46:42,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 124.0) internal successors, (1612), 13 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:42,402 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:46:42,403 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:46:42,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-19 13:46:42,403 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:46:42,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:46:42,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1176036927, now seen corresponding path program 30 times [2022-01-19 13:46:42,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:46:42,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395561225] [2022-01-19 13:46:42,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:46:42,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:46:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:46:42,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:46:42,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:46:42,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395561225] [2022-01-19 13:46:42,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395561225] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:46:42,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:46:42,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 13:46:42,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875855991] [2022-01-19 13:46:42,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:46:42,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 13:46:42,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:46:42,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 13:46:42,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-01-19 13:46:42,492 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:46:42,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 1119 transitions, 38611 flow. Second operand has 9 states, 9 states have (on average 125.33333333333333) internal successors, (1128), 9 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:42,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:46:42,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:46:42,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:46:44,246 INFO L129 PetriNetUnfolder]: 1438/5154 cut-off events. [2022-01-19 13:46:44,246 INFO L130 PetriNetUnfolder]: For 194662/196008 co-relation queries the response was YES. [2022-01-19 13:46:44,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49310 conditions, 5154 events. 1438/5154 cut-off events. For 194662/196008 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 53079 event pairs, 184 based on Foata normal form. 1091/6102 useless extension candidates. Maximal degree in co-relation 26704. Up to 1013 conditions per place. [2022-01-19 13:46:44,297 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 139 selfloop transitions, 318 changer transitions 201/768 dead transitions. [2022-01-19 13:46:44,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 768 transitions, 24727 flow [2022-01-19 13:46:44,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 13:46:44,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 13:46:44,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1343 transitions. [2022-01-19 13:46:44,298 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.813939393939394 [2022-01-19 13:46:44,298 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1343 transitions. [2022-01-19 13:46:44,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1343 transitions. [2022-01-19 13:46:44,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:46:44,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1343 transitions. [2022-01-19 13:46:44,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.3) internal successors, (1343), 10 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:44,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:44,301 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:44,301 INFO L186 Difference]: Start difference. First operand has 348 places, 1119 transitions, 38611 flow. Second operand 10 states and 1343 transitions. [2022-01-19 13:46:44,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 768 transitions, 24727 flow [2022-01-19 13:46:44,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 768 transitions, 24647 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-01-19 13:46:44,685 INFO L242 Difference]: Finished difference. Result has 354 places, 528 transitions, 15048 flow [2022-01-19 13:46:44,686 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=22145, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15048, PETRI_PLACES=354, PETRI_TRANSITIONS=528} [2022-01-19 13:46:44,686 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 195 predicate places. [2022-01-19 13:46:44,686 INFO L470 AbstractCegarLoop]: Abstraction has has 354 places, 528 transitions, 15048 flow [2022-01-19 13:46:44,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 125.33333333333333) internal successors, (1128), 9 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:44,687 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:46:44,687 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:46:44,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-19 13:46:44,687 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:46:44,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:46:44,687 INFO L85 PathProgramCache]: Analyzing trace with hash -603983289, now seen corresponding path program 31 times [2022-01-19 13:46:44,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:46:44,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596096563] [2022-01-19 13:46:44,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:46:44,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:46:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:46:44,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:46:44,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:46:44,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596096563] [2022-01-19 13:46:44,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596096563] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:46:44,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:46:44,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:46:44,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161816005] [2022-01-19 13:46:44,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:46:44,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:46:44,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:46:44,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:46:44,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:46:44,760 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:46:44,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 528 transitions, 15048 flow. Second operand has 10 states, 10 states have (on average 124.9) internal successors, (1249), 10 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:44,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:46:44,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:46:44,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:46:45,406 INFO L129 PetriNetUnfolder]: 597/2459 cut-off events. [2022-01-19 13:46:45,406 INFO L130 PetriNetUnfolder]: For 86856/87018 co-relation queries the response was YES. [2022-01-19 13:46:45,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21661 conditions, 2459 events. 597/2459 cut-off events. For 86856/87018 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 21639 event pairs, 87 based on Foata normal form. 199/2599 useless extension candidates. Maximal degree in co-relation 13741. Up to 389 conditions per place. [2022-01-19 13:46:45,426 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 92 selfloop transitions, 206 changer transitions 97/505 dead transitions. [2022-01-19 13:46:45,427 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 505 transitions, 14304 flow [2022-01-19 13:46:45,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 13:46:45,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 13:46:45,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1463 transitions. [2022-01-19 13:46:45,428 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.806060606060606 [2022-01-19 13:46:45,428 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1463 transitions. [2022-01-19 13:46:45,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1463 transitions. [2022-01-19 13:46:45,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:46:45,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1463 transitions. [2022-01-19 13:46:45,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 133.0) internal successors, (1463), 11 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:45,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 165.0) internal successors, (1980), 12 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:45,431 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 165.0) internal successors, (1980), 12 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:45,431 INFO L186 Difference]: Start difference. First operand has 354 places, 528 transitions, 15048 flow. Second operand 11 states and 1463 transitions. [2022-01-19 13:46:45,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 505 transitions, 14304 flow [2022-01-19 13:46:45,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 505 transitions, 13174 flow, removed 54 selfloop flow, removed 20 redundant places. [2022-01-19 13:46:45,595 INFO L242 Difference]: Finished difference. Result has 345 places, 369 transitions, 8565 flow [2022-01-19 13:46:45,595 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=11894, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8565, PETRI_PLACES=345, PETRI_TRANSITIONS=369} [2022-01-19 13:46:45,596 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 186 predicate places. [2022-01-19 13:46:45,596 INFO L470 AbstractCegarLoop]: Abstraction has has 345 places, 369 transitions, 8565 flow [2022-01-19 13:46:45,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 124.9) internal successors, (1249), 10 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:45,596 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:46:45,596 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:46:45,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-19 13:46:45,596 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:46:45,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:46:45,596 INFO L85 PathProgramCache]: Analyzing trace with hash 297615239, now seen corresponding path program 32 times [2022-01-19 13:46:45,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:46:45,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850742683] [2022-01-19 13:46:45,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:46:45,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:46:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:46:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:46:45,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:46:45,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850742683] [2022-01-19 13:46:45,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850742683] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:46:45,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:46:45,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 13:46:45,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645092401] [2022-01-19 13:46:45,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:46:45,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 13:46:45,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:46:45,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 13:46:45,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-19 13:46:45,679 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:46:45,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 369 transitions, 8565 flow. Second operand has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:45,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:46:45,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:46:45,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:46:46,027 INFO L129 PetriNetUnfolder]: 236/1180 cut-off events. [2022-01-19 13:46:46,027 INFO L130 PetriNetUnfolder]: For 47014/47083 co-relation queries the response was YES. [2022-01-19 13:46:46,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10926 conditions, 1180 events. 236/1180 cut-off events. For 47014/47083 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 8996 event pairs, 14 based on Foata normal form. 82/1245 useless extension candidates. Maximal degree in co-relation 9878. Up to 213 conditions per place. [2022-01-19 13:46:46,036 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 63 selfloop transitions, 69 changer transitions 107/346 dead transitions. [2022-01-19 13:46:46,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 346 transitions, 8307 flow [2022-01-19 13:46:46,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 13:46:46,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 13:46:46,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1695 transitions. [2022-01-19 13:46:46,037 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7902097902097902 [2022-01-19 13:46:46,037 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1695 transitions. [2022-01-19 13:46:46,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1695 transitions. [2022-01-19 13:46:46,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:46:46,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1695 transitions. [2022-01-19 13:46:46,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 130.3846153846154) internal successors, (1695), 13 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:46,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 165.0) internal successors, (2310), 14 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:46,040 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 165.0) internal successors, (2310), 14 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:46,040 INFO L186 Difference]: Start difference. First operand has 345 places, 369 transitions, 8565 flow. Second operand 13 states and 1695 transitions. [2022-01-19 13:46:46,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 346 transitions, 8307 flow [2022-01-19 13:46:46,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 346 transitions, 7214 flow, removed 41 selfloop flow, removed 30 redundant places. [2022-01-19 13:46:46,130 INFO L242 Difference]: Finished difference. Result has 326 places, 211 transitions, 2810 flow [2022-01-19 13:46:46,130 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=6296, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2810, PETRI_PLACES=326, PETRI_TRANSITIONS=211} [2022-01-19 13:46:46,130 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 167 predicate places. [2022-01-19 13:46:46,130 INFO L470 AbstractCegarLoop]: Abstraction has has 326 places, 211 transitions, 2810 flow [2022-01-19 13:46:46,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:46,131 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:46:46,131 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:46:46,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-19 13:46:46,131 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:46:46,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:46:46,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1031786507, now seen corresponding path program 33 times [2022-01-19 13:46:46,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:46:46,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125294466] [2022-01-19 13:46:46,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:46:46,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:46:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:46:46,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:46:46,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:46:46,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125294466] [2022-01-19 13:46:46,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125294466] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:46:46,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:46:46,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 13:46:46,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585871603] [2022-01-19 13:46:46,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:46:46,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 13:46:46,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:46:46,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 13:46:46,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-19 13:46:46,209 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-01-19 13:46:46,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 211 transitions, 2810 flow. Second operand has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:46,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:46:46,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-01-19 13:46:46,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:46:46,404 INFO L129 PetriNetUnfolder]: 73/480 cut-off events. [2022-01-19 13:46:46,404 INFO L130 PetriNetUnfolder]: For 13265/13286 co-relation queries the response was YES. [2022-01-19 13:46:46,406 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3230 conditions, 480 events. 73/480 cut-off events. For 13265/13286 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1966 event pairs, 5 based on Foata normal form. 25/499 useless extension candidates. Maximal degree in co-relation 3073. Up to 54 conditions per place. [2022-01-19 13:46:46,407 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 58 selfloop transitions, 61 changer transitions 19/245 dead transitions. [2022-01-19 13:46:46,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 245 transitions, 3410 flow [2022-01-19 13:46:46,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 13:46:46,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 13:46:46,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1676 transitions. [2022-01-19 13:46:46,408 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7813519813519814 [2022-01-19 13:46:46,408 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1676 transitions. [2022-01-19 13:46:46,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1676 transitions. [2022-01-19 13:46:46,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:46:46,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1676 transitions. [2022-01-19 13:46:46,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 128.92307692307693) internal successors, (1676), 13 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:46,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 165.0) internal successors, (2310), 14 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:46,411 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 165.0) internal successors, (2310), 14 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:46,411 INFO L186 Difference]: Start difference. First operand has 326 places, 211 transitions, 2810 flow. Second operand 13 states and 1676 transitions. [2022-01-19 13:46:46,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 245 transitions, 3410 flow [2022-01-19 13:46:46,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 245 transitions, 2026 flow, removed 81 selfloop flow, removed 79 redundant places. [2022-01-19 13:46:46,431 INFO L242 Difference]: Finished difference. Result has 238 places, 195 transitions, 1439 flow [2022-01-19 13:46:46,431 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1439, PETRI_PLACES=238, PETRI_TRANSITIONS=195} [2022-01-19 13:46:46,432 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 79 predicate places. [2022-01-19 13:46:46,432 INFO L470 AbstractCegarLoop]: Abstraction has has 238 places, 195 transitions, 1439 flow [2022-01-19 13:46:46,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:46,432 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:46:46,432 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:46:46,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-19 13:46:46,432 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-19 13:46:46,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:46:46,433 INFO L85 PathProgramCache]: Analyzing trace with hash -2026899825, now seen corresponding path program 34 times [2022-01-19 13:46:46,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:46:46,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721999803] [2022-01-19 13:46:46,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:46:46,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:46:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:46:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:46:46,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:46:46,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721999803] [2022-01-19 13:46:46,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721999803] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:46:46,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:46:46,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-19 13:46:46,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029015806] [2022-01-19 13:46:46,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:46:46,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-19 13:46:46,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:46:46,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-19 13:46:46,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-01-19 13:46:46,556 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 165 [2022-01-19 13:46:46,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 195 transitions, 1439 flow. Second operand has 13 states, 13 states have (on average 114.76923076923077) internal successors, (1492), 13 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:46,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:46:46,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 165 [2022-01-19 13:46:46,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:46:46,782 INFO L129 PetriNetUnfolder]: 89/410 cut-off events. [2022-01-19 13:46:46,782 INFO L130 PetriNetUnfolder]: For 3240/3240 co-relation queries the response was YES. [2022-01-19 13:46:46,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2011 conditions, 410 events. 89/410 cut-off events. For 3240/3240 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1818 event pairs, 0 based on Foata normal form. 6/404 useless extension candidates. Maximal degree in co-relation 1983. Up to 57 conditions per place. [2022-01-19 13:46:46,784 INFO L132 encePairwiseOnDemand]: 153/165 looper letters, 0 selfloop transitions, 0 changer transitions 211/211 dead transitions. [2022-01-19 13:46:46,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 211 transitions, 1919 flow [2022-01-19 13:46:46,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 13:46:46,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 13:46:46,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1888 transitions. [2022-01-19 13:46:46,785 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7151515151515152 [2022-01-19 13:46:46,786 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1888 transitions. [2022-01-19 13:46:46,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1888 transitions. [2022-01-19 13:46:46,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:46:46,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1888 transitions. [2022-01-19 13:46:46,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 118.0) internal successors, (1888), 16 states have internal predecessors, (1888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:46,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 165.0) internal successors, (2805), 17 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:46,789 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 165.0) internal successors, (2805), 17 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:46,789 INFO L186 Difference]: Start difference. First operand has 238 places, 195 transitions, 1439 flow. Second operand 16 states and 1888 transitions. [2022-01-19 13:46:46,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 211 transitions, 1919 flow [2022-01-19 13:46:46,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 211 transitions, 1609 flow, removed 1 selfloop flow, removed 27 redundant places. [2022-01-19 13:46:46,797 INFO L242 Difference]: Finished difference. Result has 193 places, 0 transitions, 0 flow [2022-01-19 13:46:46,797 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=193, PETRI_TRANSITIONS=0} [2022-01-19 13:46:46,797 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 34 predicate places. [2022-01-19 13:46:46,797 INFO L470 AbstractCegarLoop]: Abstraction has has 193 places, 0 transitions, 0 flow [2022-01-19 13:46:46,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 114.76923076923077) internal successors, (1492), 13 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:46:46,799 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-01-19 13:46:46,800 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 6 remaining) [2022-01-19 13:46:46,800 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 6 remaining) [2022-01-19 13:46:46,800 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (2 of 6 remaining) [2022-01-19 13:46:46,800 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION (1 of 6 remaining) [2022-01-19 13:46:46,800 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATION (0 of 6 remaining) [2022-01-19 13:46:46,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-19 13:46:46,802 INFO L732 BasicCegarLoop]: Path program histogram: [34] [2022-01-19 13:46:46,804 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 13:46:46,804 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 13:46:46,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 01:46:46 BasicIcfg [2022-01-19 13:46:46,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 13:46:46,806 INFO L158 Benchmark]: Toolchain (without parser) took 181955.86ms. Allocated memory was 367.0MB in the beginning and 15.5GB in the end (delta: 15.1GB). Free memory was 312.6MB in the beginning and 10.7GB in the end (delta: -10.4GB). Peak memory consumption was 4.8GB. Max. memory is 16.0GB. [2022-01-19 13:46:46,806 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 367.0MB. Free memory was 329.1MB in the beginning and 329.0MB in the end (delta: 69.4kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 13:46:46,806 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.83ms. Allocated memory was 367.0MB in the beginning and 440.4MB in the end (delta: 73.4MB). Free memory was 312.5MB in the beginning and 413.0MB in the end (delta: -100.5MB). Peak memory consumption was 8.6MB. Max. memory is 16.0GB. [2022-01-19 13:46:46,806 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.65ms. Allocated memory is still 440.4MB. Free memory was 413.0MB in the beginning and 410.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 13:46:46,806 INFO L158 Benchmark]: Boogie Preprocessor took 24.72ms. Allocated memory is still 440.4MB. Free memory was 410.9MB in the beginning and 409.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 13:46:46,807 INFO L158 Benchmark]: RCFGBuilder took 453.22ms. Allocated memory is still 440.4MB. Free memory was 409.9MB in the beginning and 384.7MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2022-01-19 13:46:46,807 INFO L158 Benchmark]: TraceAbstraction took 181230.79ms. Allocated memory was 440.4MB in the beginning and 15.5GB in the end (delta: 15.1GB). Free memory was 384.7MB in the beginning and 10.7GB in the end (delta: -10.3GB). Peak memory consumption was 4.8GB. Max. memory is 16.0GB. [2022-01-19 13:46:46,808 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 367.0MB. Free memory was 329.1MB in the beginning and 329.0MB in the end (delta: 69.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 206.83ms. Allocated memory was 367.0MB in the beginning and 440.4MB in the end (delta: 73.4MB). Free memory was 312.5MB in the beginning and 413.0MB in the end (delta: -100.5MB). Peak memory consumption was 8.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 36.65ms. Allocated memory is still 440.4MB. Free memory was 413.0MB in the beginning and 410.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.72ms. Allocated memory is still 440.4MB. Free memory was 410.9MB in the beginning and 409.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 453.22ms. Allocated memory is still 440.4MB. Free memory was 409.9MB in the beginning and 384.7MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 181230.79ms. Allocated memory was 440.4MB in the beginning and 15.5GB in the end (delta: 15.1GB). Free memory was 384.7MB in the beginning and 10.7GB in the end (delta: -10.3GB). Peak memory consumption was 4.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 168]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 11 procedures, 205 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 181.1s, OverallIterations: 34, TraceHistogramMax: 1, PathProgramHistogramMax: 34, EmptinessCheckTime: 0.0s, AutomataDifference: 176.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3420 SdHoareTripleChecker+Valid, 6.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3420 mSDsluCounter, 2093 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4292 mSDsCounter, 1925 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13416 IncrementalHoareTripleChecker+Invalid, 15341 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1925 mSolverCounterUnsat, 628 mSDtfsCounter, 13416 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 567 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 435 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38611occurred in iteration=29, InterpolantAutomatonStates: 397, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 4794 NumberOfCodeBlocks, 4794 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 4760 ConstructedInterpolants, 0 QuantifiedInterpolants, 13460 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-19 13:46:46,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...