./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:11:05,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:11:05,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:11:05,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:11:05,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:11:05,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:11:05,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:11:05,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:11:05,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:11:05,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:11:05,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:11:05,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:11:05,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:11:05,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:11:05,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:11:05,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:11:05,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:11:05,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:11:05,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:11:05,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:11:05,883 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:11:05,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:11:05,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:11:05,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:11:05,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:11:05,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:11:05,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:11:05,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:11:05,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:11:05,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:11:05,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:11:05,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:11:05,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:11:05,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:11:05,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:11:05,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:11:05,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:11:05,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:11:05,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:11:05,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:11:05,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:11:05,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:11:05,900 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:11:05,925 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:11:05,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:11:05,925 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:11:05,926 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:11:05,926 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:11:05,926 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:11:05,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:11:05,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:11:05,927 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:11:05,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:11:05,928 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:11:05,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:11:05,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:11:05,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:11:05,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:11:05,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:11:05,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:11:05,929 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:11:05,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:11:05,929 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:11:05,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:11:05,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:11:05,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:11:05,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:11:05,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:11:05,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:11:05,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:11:05,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:11:05,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:11:05,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:11:05,931 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:11:05,931 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:11:05,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:11:05,931 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 [2022-07-12 10:11:06,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:11:06,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:11:06,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:11:06,139 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:11:06,139 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:11:06,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2022-07-12 10:11:06,197 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7ca7b95b/69b8ae003f9a44648a5f8cf03bd7fb52/FLAGdeb22a5d8 [2022-07-12 10:11:06,653 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:11:06,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2022-07-12 10:11:06,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7ca7b95b/69b8ae003f9a44648a5f8cf03bd7fb52/FLAGdeb22a5d8 [2022-07-12 10:11:06,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7ca7b95b/69b8ae003f9a44648a5f8cf03bd7fb52 [2022-07-12 10:11:06,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:11:06,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:11:06,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:11:06,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:11:06,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:11:06,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:11:06" (1/1) ... [2022-07-12 10:11:06,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@649438c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:11:06, skipping insertion in model container [2022-07-12 10:11:06,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:11:06" (1/1) ... [2022-07-12 10:11:06,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:11:06,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:11:07,144 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i[76084,76097] [2022-07-12 10:11:07,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:11:07,185 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:11:07,213 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i[76084,76097] [2022-07-12 10:11:07,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:11:07,313 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:11:07,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:11:07 WrapperNode [2022-07-12 10:11:07,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:11:07,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:11:07,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:11:07,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:11:07,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:11:07" (1/1) ... [2022-07-12 10:11:07,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:11:07" (1/1) ... [2022-07-12 10:11:07,362 INFO L137 Inliner]: procedures = 482, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2022-07-12 10:11:07,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:11:07,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:11:07,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:11:07,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:11:07,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:11:07" (1/1) ... [2022-07-12 10:11:07,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:11:07" (1/1) ... [2022-07-12 10:11:07,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:11:07" (1/1) ... [2022-07-12 10:11:07,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:11:07" (1/1) ... [2022-07-12 10:11:07,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:11:07" (1/1) ... [2022-07-12 10:11:07,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:11:07" (1/1) ... [2022-07-12 10:11:07,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:11:07" (1/1) ... [2022-07-12 10:11:07,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:11:07,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:11:07,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:11:07,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:11:07,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:11:07" (1/1) ... [2022-07-12 10:11:07,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:11:07,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:11:07,429 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) [2022-07-12 10:11:07,432 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 [2022-07-12 10:11:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:11:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:11:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-12 10:11:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:11:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 10:11:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:11:07,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:11:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-07-12 10:11:07,463 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-07-12 10:11:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:11:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:11:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:11:07,464 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:11:07,675 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:11:07,676 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:11:07,834 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:11:07,841 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:11:07,841 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:11:07,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:11:07 BoogieIcfgContainer [2022-07-12 10:11:07,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:11:07,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:11:07,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:11:07,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:11:07,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:11:06" (1/3) ... [2022-07-12 10:11:07,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fbb864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:11:07, skipping insertion in model container [2022-07-12 10:11:07,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:11:07" (2/3) ... [2022-07-12 10:11:07,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fbb864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:11:07, skipping insertion in model container [2022-07-12 10:11:07,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:11:07" (3/3) ... [2022-07-12 10:11:07,847 INFO L111 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2022-07-12 10:11:07,851 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:11:07,857 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:11:07,857 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-12 10:11:07,857 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:11:07,896 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-12 10:11:07,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 192 places, 194 transitions, 404 flow [2022-07-12 10:11:07,964 INFO L129 PetriNetUnfolder]: 10/239 cut-off events. [2022-07-12 10:11:07,964 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:11:07,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 239 events. 10/239 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 390 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 141. Up to 4 conditions per place. [2022-07-12 10:11:07,968 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 194 transitions, 404 flow [2022-07-12 10:11:07,971 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 180 transitions, 372 flow [2022-07-12 10:11:07,990 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:11:07,994 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@427b0fc9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3f0a985a [2022-07-12 10:11:07,995 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-07-12 10:11:08,000 INFO L129 PetriNetUnfolder]: 0/45 cut-off events. [2022-07-12 10:11:08,000 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:11:08,000 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:11:08,001 INFO L200 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] [2022-07-12 10:11:08,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:11:08,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:11:08,006 INFO L85 PathProgramCache]: Analyzing trace with hash -974822883, now seen corresponding path program 1 times [2022-07-12 10:11:08,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:11:08,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019070397] [2022-07-12 10:11:08,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:11:08,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:11:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:11:08,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:11:08,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:11:08,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019070397] [2022-07-12 10:11:08,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019070397] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:11:08,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:11:08,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:11:08,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245670747] [2022-07-12 10:11:08,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:11:08,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:11:08,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:11:08,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:11:08,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:11:08,368 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 194 [2022-07-12 10:11:08,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 180 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:08,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:11:08,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 194 [2022-07-12 10:11:08,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:11:08,659 INFO L129 PetriNetUnfolder]: 361/1044 cut-off events. [2022-07-12 10:11:08,660 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-07-12 10:11:08,664 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 1044 events. 361/1044 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6091 event pairs, 216 based on Foata normal form. 20/1009 useless extension candidates. Maximal degree in co-relation 1486. Up to 397 conditions per place. [2022-07-12 10:11:08,670 INFO L132 encePairwiseOnDemand]: 172/194 looper letters, 53 selfloop transitions, 17 changer transitions 1/176 dead transitions. [2022-07-12 10:11:08,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 176 transitions, 506 flow [2022-07-12 10:11:08,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:11:08,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:11:08,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1129 transitions. [2022-07-12 10:11:08,687 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6466208476517755 [2022-07-12 10:11:08,687 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1129 transitions. [2022-07-12 10:11:08,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1129 transitions. [2022-07-12 10:11:08,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:11:08,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1129 transitions. [2022-07-12 10:11:08,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 125.44444444444444) internal successors, (1129), 9 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:08,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 194.0) internal successors, (1940), 10 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:08,704 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 194.0) internal successors, (1940), 10 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:08,705 INFO L186 Difference]: Start difference. First operand has 180 places, 180 transitions, 372 flow. Second operand 9 states and 1129 transitions. [2022-07-12 10:11:08,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 176 transitions, 506 flow [2022-07-12 10:11:08,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 176 transitions, 498 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:11:08,714 INFO L242 Difference]: Finished difference. Result has 178 places, 169 transitions, 383 flow [2022-07-12 10:11:08,716 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=383, PETRI_PLACES=178, PETRI_TRANSITIONS=169} [2022-07-12 10:11:08,724 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, -2 predicate places. [2022-07-12 10:11:08,724 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 169 transitions, 383 flow [2022-07-12 10:11:08,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:08,725 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:11:08,725 INFO L200 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] [2022-07-12 10:11:08,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:11:08,725 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:11:08,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:11:08,726 INFO L85 PathProgramCache]: Analyzing trace with hash 2102646053, now seen corresponding path program 1 times [2022-07-12 10:11:08,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:11:08,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114441007] [2022-07-12 10:11:08,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:11:08,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:11:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:11:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:11:08,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:11:08,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114441007] [2022-07-12 10:11:08,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114441007] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:11:08,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:11:08,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:11:08,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743345463] [2022-07-12 10:11:08,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:11:08,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:11:08,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:11:08,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:11:08,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:11:08,849 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 194 [2022-07-12 10:11:08,850 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 169 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:08,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:11:08,850 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 194 [2022-07-12 10:11:08,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:11:09,052 INFO L129 PetriNetUnfolder]: 361/1014 cut-off events. [2022-07-12 10:11:09,053 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-07-12 10:11:09,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1782 conditions, 1014 events. 361/1014 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5751 event pairs, 120 based on Foata normal form. 1/980 useless extension candidates. Maximal degree in co-relation 881. Up to 261 conditions per place. [2022-07-12 10:11:09,057 INFO L132 encePairwiseOnDemand]: 175/194 looper letters, 61 selfloop transitions, 18 changer transitions 1/184 dead transitions. [2022-07-12 10:11:09,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 184 transitions, 575 flow [2022-07-12 10:11:09,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:11:09,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:11:09,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1251 transitions. [2022-07-12 10:11:09,060 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6448453608247423 [2022-07-12 10:11:09,060 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1251 transitions. [2022-07-12 10:11:09,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1251 transitions. [2022-07-12 10:11:09,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:11:09,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1251 transitions. [2022-07-12 10:11:09,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:09,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 194.0) internal successors, (2134), 11 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:09,067 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 194.0) internal successors, (2134), 11 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:09,067 INFO L186 Difference]: Start difference. First operand has 178 places, 169 transitions, 383 flow. Second operand 10 states and 1251 transitions. [2022-07-12 10:11:09,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 184 transitions, 575 flow [2022-07-12 10:11:09,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 184 transitions, 546 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-07-12 10:11:09,071 INFO L242 Difference]: Finished difference. Result has 179 places, 168 transitions, 394 flow [2022-07-12 10:11:09,071 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=394, PETRI_PLACES=179, PETRI_TRANSITIONS=168} [2022-07-12 10:11:09,072 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, -1 predicate places. [2022-07-12 10:11:09,072 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 168 transitions, 394 flow [2022-07-12 10:11:09,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:09,073 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:11:09,073 INFO L200 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] [2022-07-12 10:11:09,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:11:09,073 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:11:09,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:11:09,074 INFO L85 PathProgramCache]: Analyzing trace with hash 2061215173, now seen corresponding path program 1 times [2022-07-12 10:11:09,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:11:09,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428594621] [2022-07-12 10:11:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:11:09,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:11:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:11:09,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:11:09,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:11:09,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428594621] [2022-07-12 10:11:09,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428594621] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:11:09,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:11:09,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:11:09,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422143181] [2022-07-12 10:11:09,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:11:09,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:11:09,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:11:09,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:11:09,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:11:09,161 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 194 [2022-07-12 10:11:09,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 168 transitions, 394 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:09,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:11:09,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 194 [2022-07-12 10:11:09,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:11:09,506 INFO L129 PetriNetUnfolder]: 832/2091 cut-off events. [2022-07-12 10:11:09,507 INFO L130 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2022-07-12 10:11:09,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3834 conditions, 2091 events. 832/2091 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14002 event pairs, 169 based on Foata normal form. 32/2090 useless extension candidates. Maximal degree in co-relation 1026. Up to 499 conditions per place. [2022-07-12 10:11:09,519 INFO L132 encePairwiseOnDemand]: 173/194 looper letters, 100 selfloop transitions, 49 changer transitions 0/253 dead transitions. [2022-07-12 10:11:09,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 253 transitions, 878 flow [2022-07-12 10:11:09,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:11:09,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:11:09,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1644 transitions. [2022-07-12 10:11:09,523 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6518636003172086 [2022-07-12 10:11:09,523 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1644 transitions. [2022-07-12 10:11:09,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1644 transitions. [2022-07-12 10:11:09,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:11:09,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1644 transitions. [2022-07-12 10:11:09,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 126.46153846153847) internal successors, (1644), 13 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:09,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 194.0) internal successors, (2716), 14 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:09,531 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 194.0) internal successors, (2716), 14 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:09,532 INFO L186 Difference]: Start difference. First operand has 179 places, 168 transitions, 394 flow. Second operand 13 states and 1644 transitions. [2022-07-12 10:11:09,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 253 transitions, 878 flow [2022-07-12 10:11:09,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 253 transitions, 832 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-12 10:11:09,540 INFO L242 Difference]: Finished difference. Result has 191 places, 205 transitions, 664 flow [2022-07-12 10:11:09,540 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=664, PETRI_PLACES=191, PETRI_TRANSITIONS=205} [2022-07-12 10:11:09,542 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 11 predicate places. [2022-07-12 10:11:09,542 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 205 transitions, 664 flow [2022-07-12 10:11:09,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:09,543 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:11:09,543 INFO L200 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] [2022-07-12 10:11:09,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:11:09,543 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:11:09,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:11:09,544 INFO L85 PathProgramCache]: Analyzing trace with hash 856568329, now seen corresponding path program 1 times [2022-07-12 10:11:09,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:11:09,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866654507] [2022-07-12 10:11:09,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:11:09,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:11:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:11:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:11:09,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:11:09,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866654507] [2022-07-12 10:11:09,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866654507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:11:09,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:11:09,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:11:09,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456055647] [2022-07-12 10:11:09,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:11:09,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:11:09,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:11:09,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:11:09,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:11:09,681 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 194 [2022-07-12 10:11:09,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 205 transitions, 664 flow. Second operand has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:09,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:11:09,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 194 [2022-07-12 10:11:09,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:11:10,115 INFO L129 PetriNetUnfolder]: 1084/2665 cut-off events. [2022-07-12 10:11:10,116 INFO L130 PetriNetUnfolder]: For 10877/10958 co-relation queries the response was YES. [2022-07-12 10:11:10,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9159 conditions, 2665 events. 1084/2665 cut-off events. For 10877/10958 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 19180 event pairs, 218 based on Foata normal form. 47/2679 useless extension candidates. Maximal degree in co-relation 7850. Up to 732 conditions per place. [2022-07-12 10:11:10,132 INFO L132 encePairwiseOnDemand]: 175/194 looper letters, 74 selfloop transitions, 48 changer transitions 69/294 dead transitions. [2022-07-12 10:11:10,133 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 294 transitions, 1748 flow [2022-07-12 10:11:10,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:11:10,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:11:10,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1395 transitions. [2022-07-12 10:11:10,136 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6537019681349578 [2022-07-12 10:11:10,136 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1395 transitions. [2022-07-12 10:11:10,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1395 transitions. [2022-07-12 10:11:10,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:11:10,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1395 transitions. [2022-07-12 10:11:10,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 126.81818181818181) internal successors, (1395), 11 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:10,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:10,142 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:10,142 INFO L186 Difference]: Start difference. First operand has 191 places, 205 transitions, 664 flow. Second operand 11 states and 1395 transitions. [2022-07-12 10:11:10,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 294 transitions, 1748 flow [2022-07-12 10:11:10,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 294 transitions, 1748 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:11:10,156 INFO L242 Difference]: Finished difference. Result has 209 places, 211 transitions, 977 flow [2022-07-12 10:11:10,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=977, PETRI_PLACES=209, PETRI_TRANSITIONS=211} [2022-07-12 10:11:10,157 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 29 predicate places. [2022-07-12 10:11:10,157 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 211 transitions, 977 flow [2022-07-12 10:11:10,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:10,158 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:11:10,158 INFO L200 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] [2022-07-12 10:11:10,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:11:10,159 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:11:10,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:11:10,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1190557847, now seen corresponding path program 1 times [2022-07-12 10:11:10,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:11:10,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632255114] [2022-07-12 10:11:10,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:11:10,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:11:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:11:10,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:11:10,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:11:10,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632255114] [2022-07-12 10:11:10,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632255114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:11:10,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:11:10,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:11:10,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423881027] [2022-07-12 10:11:10,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:11:10,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:11:10,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:11:10,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:11:10,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:11:10,232 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 194 [2022-07-12 10:11:10,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 211 transitions, 977 flow. Second operand has 5 states, 5 states have (on average 169.2) internal successors, (846), 5 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:10,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:11:10,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 194 [2022-07-12 10:11:10,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:11:10,275 INFO L129 PetriNetUnfolder]: 4/167 cut-off events. [2022-07-12 10:11:10,275 INFO L130 PetriNetUnfolder]: For 459/531 co-relation queries the response was YES. [2022-07-12 10:11:10,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 167 events. 4/167 cut-off events. For 459/531 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 188 event pairs, 4 based on Foata normal form. 8/173 useless extension candidates. Maximal degree in co-relation 336. Up to 13 conditions per place. [2022-07-12 10:11:10,276 INFO L132 encePairwiseOnDemand]: 189/194 looper letters, 9 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2022-07-12 10:11:10,276 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 139 transitions, 436 flow [2022-07-12 10:11:10,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:11:10,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-12 10:11:10,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1016 transitions. [2022-07-12 10:11:10,279 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.872852233676976 [2022-07-12 10:11:10,279 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1016 transitions. [2022-07-12 10:11:10,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1016 transitions. [2022-07-12 10:11:10,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:11:10,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1016 transitions. [2022-07-12 10:11:10,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:10,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 194.0) internal successors, (1358), 7 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:10,283 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 194.0) internal successors, (1358), 7 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:10,283 INFO L186 Difference]: Start difference. First operand has 209 places, 211 transitions, 977 flow. Second operand 6 states and 1016 transitions. [2022-07-12 10:11:10,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 139 transitions, 436 flow [2022-07-12 10:11:10,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 139 transitions, 316 flow, removed 40 selfloop flow, removed 19 redundant places. [2022-07-12 10:11:10,286 INFO L242 Difference]: Finished difference. Result has 152 places, 139 transitions, 298 flow [2022-07-12 10:11:10,286 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=152, PETRI_TRANSITIONS=139} [2022-07-12 10:11:10,287 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, -28 predicate places. [2022-07-12 10:11:10,287 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 139 transitions, 298 flow [2022-07-12 10:11:10,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.2) internal successors, (846), 5 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:10,287 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:11:10,287 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:11:10,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:11:10,288 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:11:10,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:11:10,288 INFO L85 PathProgramCache]: Analyzing trace with hash 241276256, now seen corresponding path program 1 times [2022-07-12 10:11:10,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:11:10,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255621855] [2022-07-12 10:11:10,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:11:10,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:11:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:11:10,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:11:10,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:11:10,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255621855] [2022-07-12 10:11:10,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255621855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:11:10,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:11:10,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-12 10:11:10,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584892522] [2022-07-12 10:11:10,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:11:10,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 10:11:10,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:11:10,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 10:11:10,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:11:10,770 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-07-12 10:11:10,772 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 139 transitions, 298 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:10,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:11:10,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-07-12 10:11:10,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:11:11,505 INFO L129 PetriNetUnfolder]: 460/1290 cut-off events. [2022-07-12 10:11:11,505 INFO L130 PetriNetUnfolder]: For 162/165 co-relation queries the response was YES. [2022-07-12 10:11:11,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2416 conditions, 1290 events. 460/1290 cut-off events. For 162/165 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 7487 event pairs, 200 based on Foata normal form. 0/1241 useless extension candidates. Maximal degree in co-relation 2408. Up to 363 conditions per place. [2022-07-12 10:11:11,511 INFO L132 encePairwiseOnDemand]: 172/194 looper letters, 104 selfloop transitions, 25 changer transitions 0/200 dead transitions. [2022-07-12 10:11:11,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 200 transitions, 708 flow [2022-07-12 10:11:11,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:11:11,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:11:11,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1840 transitions. [2022-07-12 10:11:11,514 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5269186712485682 [2022-07-12 10:11:11,514 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1840 transitions. [2022-07-12 10:11:11,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1840 transitions. [2022-07-12 10:11:11,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:11:11,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1840 transitions. [2022-07-12 10:11:11,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 102.22222222222223) internal successors, (1840), 18 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:11,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 194.0) internal successors, (3686), 19 states have internal predecessors, (3686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:11,523 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 194.0) internal successors, (3686), 19 states have internal predecessors, (3686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:11,523 INFO L186 Difference]: Start difference. First operand has 152 places, 139 transitions, 298 flow. Second operand 18 states and 1840 transitions. [2022-07-12 10:11:11,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 200 transitions, 708 flow [2022-07-12 10:11:11,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 200 transitions, 701 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:11:11,526 INFO L242 Difference]: Finished difference. Result has 175 places, 153 transitions, 424 flow [2022-07-12 10:11:11,526 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=424, PETRI_PLACES=175, PETRI_TRANSITIONS=153} [2022-07-12 10:11:11,527 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, -5 predicate places. [2022-07-12 10:11:11,527 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 153 transitions, 424 flow [2022-07-12 10:11:11,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:11,528 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:11:11,528 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:11:11,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:11:11,528 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:11:11,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:11:11,529 INFO L85 PathProgramCache]: Analyzing trace with hash 462011866, now seen corresponding path program 2 times [2022-07-12 10:11:11,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:11:11,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103853237] [2022-07-12 10:11:11,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:11:11,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:11:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:11:12,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:11:12,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:11:12,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103853237] [2022-07-12 10:11:12,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103853237] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:11:12,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:11:12,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-12 10:11:12,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246345678] [2022-07-12 10:11:12,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:11:12,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 10:11:12,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:11:12,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 10:11:12,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:11:12,039 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-07-12 10:11:12,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 153 transitions, 424 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:12,041 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:11:12,042 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-07-12 10:11:12,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:11:12,779 INFO L129 PetriNetUnfolder]: 608/1723 cut-off events. [2022-07-12 10:11:12,779 INFO L130 PetriNetUnfolder]: For 838/848 co-relation queries the response was YES. [2022-07-12 10:11:12,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3635 conditions, 1723 events. 608/1723 cut-off events. For 838/848 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 11540 event pairs, 106 based on Foata normal form. 11/1705 useless extension candidates. Maximal degree in co-relation 3617. Up to 354 conditions per place. [2022-07-12 10:11:12,787 INFO L132 encePairwiseOnDemand]: 169/194 looper letters, 124 selfloop transitions, 30 changer transitions 0/226 dead transitions. [2022-07-12 10:11:12,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 226 transitions, 1005 flow [2022-07-12 10:11:12,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:11:12,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:11:12,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1748 transitions. [2022-07-12 10:11:12,791 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.530018192844148 [2022-07-12 10:11:12,791 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1748 transitions. [2022-07-12 10:11:12,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1748 transitions. [2022-07-12 10:11:12,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:11:12,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1748 transitions. [2022-07-12 10:11:12,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 102.82352941176471) internal successors, (1748), 17 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:12,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 194.0) internal successors, (3492), 18 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:12,798 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 194.0) internal successors, (3492), 18 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:12,798 INFO L186 Difference]: Start difference. First operand has 175 places, 153 transitions, 424 flow. Second operand 17 states and 1748 transitions. [2022-07-12 10:11:12,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 226 transitions, 1005 flow [2022-07-12 10:11:12,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 226 transitions, 992 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-12 10:11:12,806 INFO L242 Difference]: Finished difference. Result has 194 places, 168 transitions, 594 flow [2022-07-12 10:11:12,806 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=594, PETRI_PLACES=194, PETRI_TRANSITIONS=168} [2022-07-12 10:11:12,807 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 14 predicate places. [2022-07-12 10:11:12,807 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 168 transitions, 594 flow [2022-07-12 10:11:12,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:12,808 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:11:12,808 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:11:12,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:11:12,809 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:11:12,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:11:12,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1335065666, now seen corresponding path program 3 times [2022-07-12 10:11:12,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:11:12,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050340492] [2022-07-12 10:11:12,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:11:12,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:11:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:11:13,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:11:13,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:11:13,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050340492] [2022-07-12 10:11:13,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050340492] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:11:13,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:11:13,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-12 10:11:13,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058955815] [2022-07-12 10:11:13,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:11:13,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 10:11:13,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:11:13,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 10:11:13,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:11:13,184 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-07-12 10:11:13,186 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 168 transitions, 594 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:13,186 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:11:13,186 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-07-12 10:11:13,186 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:11:13,946 INFO L129 PetriNetUnfolder]: 830/2448 cut-off events. [2022-07-12 10:11:13,946 INFO L130 PetriNetUnfolder]: For 2364/2392 co-relation queries the response was YES. [2022-07-12 10:11:13,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5827 conditions, 2448 events. 830/2448 cut-off events. For 2364/2392 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 18325 event pairs, 355 based on Foata normal form. 21/2422 useless extension candidates. Maximal degree in co-relation 5802. Up to 758 conditions per place. [2022-07-12 10:11:13,961 INFO L132 encePairwiseOnDemand]: 172/194 looper letters, 131 selfloop transitions, 38 changer transitions 0/241 dead transitions. [2022-07-12 10:11:13,962 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 241 transitions, 1283 flow [2022-07-12 10:11:13,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:11:13,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:11:13,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1843 transitions. [2022-07-12 10:11:13,965 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2022-07-12 10:11:13,965 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1843 transitions. [2022-07-12 10:11:13,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1843 transitions. [2022-07-12 10:11:13,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:11:13,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1843 transitions. [2022-07-12 10:11:13,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 102.38888888888889) internal successors, (1843), 18 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:13,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 194.0) internal successors, (3686), 19 states have internal predecessors, (3686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:13,993 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 194.0) internal successors, (3686), 19 states have internal predecessors, (3686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:13,993 INFO L186 Difference]: Start difference. First operand has 194 places, 168 transitions, 594 flow. Second operand 18 states and 1843 transitions. [2022-07-12 10:11:13,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 241 transitions, 1283 flow [2022-07-12 10:11:13,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 241 transitions, 1253 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-07-12 10:11:14,001 INFO L242 Difference]: Finished difference. Result has 215 places, 185 transitions, 815 flow [2022-07-12 10:11:14,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=815, PETRI_PLACES=215, PETRI_TRANSITIONS=185} [2022-07-12 10:11:14,002 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 35 predicate places. [2022-07-12 10:11:14,002 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 185 transitions, 815 flow [2022-07-12 10:11:14,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:14,003 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:11:14,003 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:11:14,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:11:14,003 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:11:14,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:11:14,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1985637228, now seen corresponding path program 4 times [2022-07-12 10:11:14,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:11:14,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024533994] [2022-07-12 10:11:14,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:11:14,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:11:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:11:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:11:14,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:11:14,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024533994] [2022-07-12 10:11:14,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024533994] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:11:14,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:11:14,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-12 10:11:14,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445096421] [2022-07-12 10:11:14,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:11:14,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 10:11:14,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:11:14,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 10:11:14,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:11:14,273 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-07-12 10:11:14,274 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 185 transitions, 815 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:14,274 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:11:14,274 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-07-12 10:11:14,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:11:15,192 INFO L129 PetriNetUnfolder]: 1021/3123 cut-off events. [2022-07-12 10:11:15,193 INFO L130 PetriNetUnfolder]: For 4418/4460 co-relation queries the response was YES. [2022-07-12 10:11:15,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7868 conditions, 3123 events. 1021/3123 cut-off events. For 4418/4460 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 25535 event pairs, 138 based on Foata normal form. 29/3117 useless extension candidates. Maximal degree in co-relation 7832. Up to 576 conditions per place. [2022-07-12 10:11:15,216 INFO L132 encePairwiseOnDemand]: 169/194 looper letters, 168 selfloop transitions, 58 changer transitions 0/298 dead transitions. [2022-07-12 10:11:15,216 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 298 transitions, 1885 flow [2022-07-12 10:11:15,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:11:15,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:11:15,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1967 transitions. [2022-07-12 10:11:15,220 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5336408030385241 [2022-07-12 10:11:15,220 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1967 transitions. [2022-07-12 10:11:15,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1967 transitions. [2022-07-12 10:11:15,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:11:15,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1967 transitions. [2022-07-12 10:11:15,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 103.52631578947368) internal successors, (1967), 19 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:15,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:15,228 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:15,228 INFO L186 Difference]: Start difference. First operand has 215 places, 185 transitions, 815 flow. Second operand 19 states and 1967 transitions. [2022-07-12 10:11:15,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 298 transitions, 1885 flow [2022-07-12 10:11:15,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 298 transitions, 1850 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-07-12 10:11:15,242 INFO L242 Difference]: Finished difference. Result has 235 places, 210 transitions, 1217 flow [2022-07-12 10:11:15,243 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1217, PETRI_PLACES=235, PETRI_TRANSITIONS=210} [2022-07-12 10:11:15,243 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 55 predicate places. [2022-07-12 10:11:15,243 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 210 transitions, 1217 flow [2022-07-12 10:11:15,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:15,244 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:11:15,244 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:11:15,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:11:15,245 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:11:15,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:11:15,245 INFO L85 PathProgramCache]: Analyzing trace with hash 260541270, now seen corresponding path program 5 times [2022-07-12 10:11:15,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:11:15,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442191837] [2022-07-12 10:11:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:11:15,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:11:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:11:15,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:11:15,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:11:15,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442191837] [2022-07-12 10:11:15,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442191837] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:11:15,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:11:15,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-12 10:11:15,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342435588] [2022-07-12 10:11:15,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:11:15,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 10:11:15,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:11:15,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 10:11:15,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:11:15,512 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-07-12 10:11:15,514 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 210 transitions, 1217 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:15,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:11:15,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-07-12 10:11:15,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:11:16,382 INFO L129 PetriNetUnfolder]: 1024/3251 cut-off events. [2022-07-12 10:11:16,383 INFO L130 PetriNetUnfolder]: For 7394/7430 co-relation queries the response was YES. [2022-07-12 10:11:16,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8832 conditions, 3251 events. 1024/3251 cut-off events. For 7394/7430 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 26703 event pairs, 376 based on Foata normal form. 29/3226 useless extension candidates. Maximal degree in co-relation 8789. Up to 817 conditions per place. [2022-07-12 10:11:16,408 INFO L132 encePairwiseOnDemand]: 171/194 looper letters, 175 selfloop transitions, 61 changer transitions 0/308 dead transitions. [2022-07-12 10:11:16,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 308 transitions, 2304 flow [2022-07-12 10:11:16,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:11:16,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:11:16,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1958 transitions. [2022-07-12 10:11:16,411 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5311991318502441 [2022-07-12 10:11:16,411 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1958 transitions. [2022-07-12 10:11:16,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1958 transitions. [2022-07-12 10:11:16,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:11:16,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1958 transitions. [2022-07-12 10:11:16,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 103.05263157894737) internal successors, (1958), 19 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:16,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:16,419 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:16,419 INFO L186 Difference]: Start difference. First operand has 235 places, 210 transitions, 1217 flow. Second operand 19 states and 1958 transitions. [2022-07-12 10:11:16,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 308 transitions, 2304 flow [2022-07-12 10:11:16,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 308 transitions, 2232 flow, removed 26 selfloop flow, removed 6 redundant places. [2022-07-12 10:11:16,442 INFO L242 Difference]: Finished difference. Result has 256 places, 231 transitions, 1615 flow [2022-07-12 10:11:16,443 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1615, PETRI_PLACES=256, PETRI_TRANSITIONS=231} [2022-07-12 10:11:16,444 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 76 predicate places. [2022-07-12 10:11:16,444 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 231 transitions, 1615 flow [2022-07-12 10:11:16,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:16,444 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:11:16,445 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:11:16,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:11:16,445 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:11:16,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:11:16,445 INFO L85 PathProgramCache]: Analyzing trace with hash -947966482, now seen corresponding path program 6 times [2022-07-12 10:11:16,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:11:16,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362030996] [2022-07-12 10:11:16,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:11:16,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:11:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:11:16,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:11:16,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:11:16,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362030996] [2022-07-12 10:11:16,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362030996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:11:16,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:11:16,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-12 10:11:16,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222247232] [2022-07-12 10:11:16,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:11:16,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-12 10:11:16,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:11:16,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-12 10:11:16,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-07-12 10:11:16,854 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 194 [2022-07-12 10:11:16,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 231 transitions, 1615 flow. Second operand has 19 states, 19 states have (on average 94.42105263157895) internal successors, (1794), 19 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:16,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:11:16,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 194 [2022-07-12 10:11:16,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:11:18,715 INFO L129 PetriNetUnfolder]: 2707/7011 cut-off events. [2022-07-12 10:11:18,715 INFO L130 PetriNetUnfolder]: For 19541/19541 co-relation queries the response was YES. [2022-07-12 10:11:18,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19568 conditions, 7011 events. 2707/7011 cut-off events. For 19541/19541 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 63931 event pairs, 563 based on Foata normal form. 1/6930 useless extension candidates. Maximal degree in co-relation 19515. Up to 2726 conditions per place. [2022-07-12 10:11:18,771 INFO L132 encePairwiseOnDemand]: 168/194 looper letters, 236 selfloop transitions, 80 changer transitions 0/383 dead transitions. [2022-07-12 10:11:18,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 383 transitions, 3414 flow [2022-07-12 10:11:18,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:11:18,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:11:18,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1907 transitions. [2022-07-12 10:11:18,780 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5173629951166576 [2022-07-12 10:11:18,780 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1907 transitions. [2022-07-12 10:11:18,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1907 transitions. [2022-07-12 10:11:18,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:11:18,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1907 transitions. [2022-07-12 10:11:18,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 100.36842105263158) internal successors, (1907), 19 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) [2022-07-12 10:11:18,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:18,790 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:18,790 INFO L186 Difference]: Start difference. First operand has 256 places, 231 transitions, 1615 flow. Second operand 19 states and 1907 transitions. [2022-07-12 10:11:18,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 383 transitions, 3414 flow [2022-07-12 10:11:18,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 383 transitions, 3322 flow, removed 28 selfloop flow, removed 6 redundant places. [2022-07-12 10:11:18,856 INFO L242 Difference]: Finished difference. Result has 278 places, 270 transitions, 2334 flow [2022-07-12 10:11:18,856 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2334, PETRI_PLACES=278, PETRI_TRANSITIONS=270} [2022-07-12 10:11:18,857 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 98 predicate places. [2022-07-12 10:11:18,857 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 270 transitions, 2334 flow [2022-07-12 10:11:18,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 94.42105263157895) internal successors, (1794), 19 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:18,857 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:11:18,857 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:11:18,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:11:18,858 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:11:18,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:11:18,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1947432884, now seen corresponding path program 7 times [2022-07-12 10:11:18,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:11:18,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706875125] [2022-07-12 10:11:18,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:11:18,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:11:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:11:19,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:11:19,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:11:19,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706875125] [2022-07-12 10:11:19,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706875125] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:11:19,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:11:19,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-12 10:11:19,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386179831] [2022-07-12 10:11:19,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:11:19,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 10:11:19,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:11:19,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 10:11:19,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:11:19,221 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-07-12 10:11:19,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 270 transitions, 2334 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:19,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:11:19,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-07-12 10:11:19,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:11:20,500 INFO L129 PetriNetUnfolder]: 2209/6724 cut-off events. [2022-07-12 10:11:20,501 INFO L130 PetriNetUnfolder]: For 27627/27846 co-relation queries the response was YES. [2022-07-12 10:11:20,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20265 conditions, 6724 events. 2209/6724 cut-off events. For 27627/27846 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 65818 event pairs, 625 based on Foata normal form. 135/6737 useless extension candidates. Maximal degree in co-relation 20203. Up to 2089 conditions per place. [2022-07-12 10:11:20,546 INFO L132 encePairwiseOnDemand]: 169/194 looper letters, 224 selfloop transitions, 90 changer transitions 0/390 dead transitions. [2022-07-12 10:11:20,546 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 390 transitions, 4301 flow [2022-07-12 10:11:20,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:11:20,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:11:20,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1745 transitions. [2022-07-12 10:11:20,549 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5291085506367496 [2022-07-12 10:11:20,549 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1745 transitions. [2022-07-12 10:11:20,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1745 transitions. [2022-07-12 10:11:20,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:11:20,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1745 transitions. [2022-07-12 10:11:20,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 102.6470588235294) internal successors, (1745), 17 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:20,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 194.0) internal successors, (3492), 18 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:20,555 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 194.0) internal successors, (3492), 18 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:20,555 INFO L186 Difference]: Start difference. First operand has 278 places, 270 transitions, 2334 flow. Second operand 17 states and 1745 transitions. [2022-07-12 10:11:20,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 390 transitions, 4301 flow [2022-07-12 10:11:20,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 390 transitions, 4218 flow, removed 32 selfloop flow, removed 6 redundant places. [2022-07-12 10:11:20,621 INFO L242 Difference]: Finished difference. Result has 296 places, 306 transitions, 3122 flow [2022-07-12 10:11:20,622 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=2283, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3122, PETRI_PLACES=296, PETRI_TRANSITIONS=306} [2022-07-12 10:11:20,622 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 116 predicate places. [2022-07-12 10:11:20,622 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 306 transitions, 3122 flow [2022-07-12 10:11:20,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:20,623 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:11:20,623 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:11:20,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 10:11:20,623 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:11:20,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:11:20,623 INFO L85 PathProgramCache]: Analyzing trace with hash 986122276, now seen corresponding path program 8 times [2022-07-12 10:11:20,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:11:20,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107787791] [2022-07-12 10:11:20,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:11:20,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:11:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:11:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:11:21,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:11:21,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107787791] [2022-07-12 10:11:21,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107787791] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:11:21,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:11:21,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 10:11:21,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632759592] [2022-07-12 10:11:21,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:11:21,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:11:21,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:11:21,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:11:21,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:11:21,014 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 194 [2022-07-12 10:11:21,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 306 transitions, 3122 flow. Second operand has 13 states, 13 states have (on average 137.15384615384616) internal successors, (1783), 13 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:21,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:11:21,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 194 [2022-07-12 10:11:21,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:11:22,239 INFO L129 PetriNetUnfolder]: 1439/5287 cut-off events. [2022-07-12 10:11:22,239 INFO L130 PetriNetUnfolder]: For 29626/29691 co-relation queries the response was YES. [2022-07-12 10:11:22,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17512 conditions, 5287 events. 1439/5287 cut-off events. For 29626/29691 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 54141 event pairs, 345 based on Foata normal form. 62/5223 useless extension candidates. Maximal degree in co-relation 17442. Up to 1538 conditions per place. [2022-07-12 10:11:22,278 INFO L132 encePairwiseOnDemand]: 180/194 looper letters, 173 selfloop transitions, 30 changer transitions 0/410 dead transitions. [2022-07-12 10:11:22,278 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 410 transitions, 4801 flow [2022-07-12 10:11:22,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:11:22,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:11:22,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1835 transitions. [2022-07-12 10:11:22,280 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7275971451229183 [2022-07-12 10:11:22,280 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1835 transitions. [2022-07-12 10:11:22,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1835 transitions. [2022-07-12 10:11:22,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:11:22,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1835 transitions. [2022-07-12 10:11:22,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 141.15384615384616) internal successors, (1835), 13 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:22,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 194.0) internal successors, (2716), 14 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:22,285 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 194.0) internal successors, (2716), 14 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:22,285 INFO L186 Difference]: Start difference. First operand has 296 places, 306 transitions, 3122 flow. Second operand 13 states and 1835 transitions. [2022-07-12 10:11:22,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 410 transitions, 4801 flow [2022-07-12 10:11:22,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 410 transitions, 4732 flow, removed 25 selfloop flow, removed 6 redundant places. [2022-07-12 10:11:22,364 INFO L242 Difference]: Finished difference. Result has 305 places, 315 transitions, 3218 flow [2022-07-12 10:11:22,364 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=3055, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3218, PETRI_PLACES=305, PETRI_TRANSITIONS=315} [2022-07-12 10:11:22,365 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 125 predicate places. [2022-07-12 10:11:22,365 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 315 transitions, 3218 flow [2022-07-12 10:11:22,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 137.15384615384616) internal successors, (1783), 13 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:22,365 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:11:22,365 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:11:22,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 10:11:22,366 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:11:22,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:11:22,366 INFO L85 PathProgramCache]: Analyzing trace with hash -2016136358, now seen corresponding path program 9 times [2022-07-12 10:11:22,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:11:22,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448495109] [2022-07-12 10:11:22,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:11:22,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:11:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:11:22,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:11:22,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:11:22,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448495109] [2022-07-12 10:11:22,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448495109] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:11:22,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:11:22,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:11:22,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434190168] [2022-07-12 10:11:22,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:11:22,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:11:22,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:11:22,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:11:22,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:11:22,721 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 194 [2022-07-12 10:11:22,722 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 315 transitions, 3218 flow. Second operand has 18 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:22,722 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:11:22,723 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 194 [2022-07-12 10:11:22,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:11:26,681 INFO L129 PetriNetUnfolder]: 5704/15331 cut-off events. [2022-07-12 10:11:26,682 INFO L130 PetriNetUnfolder]: For 70903/70972 co-relation queries the response was YES. [2022-07-12 10:11:26,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52988 conditions, 15331 events. 5704/15331 cut-off events. For 70903/70972 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 164920 event pairs, 1363 based on Foata normal form. 27/15222 useless extension candidates. Maximal degree in co-relation 52914. Up to 3092 conditions per place. [2022-07-12 10:11:26,800 INFO L132 encePairwiseOnDemand]: 169/194 looper letters, 500 selfloop transitions, 221 changer transitions 0/788 dead transitions. [2022-07-12 10:11:26,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 788 transitions, 9938 flow [2022-07-12 10:11:26,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-12 10:11:26,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-12 10:11:26,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3391 transitions. [2022-07-12 10:11:26,805 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5140994542146755 [2022-07-12 10:11:26,805 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3391 transitions. [2022-07-12 10:11:26,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3391 transitions. [2022-07-12 10:11:26,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:11:26,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3391 transitions. [2022-07-12 10:11:26,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 99.73529411764706) internal successors, (3391), 34 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:26,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 194.0) internal successors, (6790), 35 states have internal predecessors, (6790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:26,815 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 194.0) internal successors, (6790), 35 states have internal predecessors, (6790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:26,815 INFO L186 Difference]: Start difference. First operand has 305 places, 315 transitions, 3218 flow. Second operand 34 states and 3391 transitions. [2022-07-12 10:11:26,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 788 transitions, 9938 flow [2022-07-12 10:11:27,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 788 transitions, 9915 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-07-12 10:11:27,108 INFO L242 Difference]: Finished difference. Result has 352 places, 465 transitions, 6643 flow [2022-07-12 10:11:27,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=3202, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=6643, PETRI_PLACES=352, PETRI_TRANSITIONS=465} [2022-07-12 10:11:27,109 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 172 predicate places. [2022-07-12 10:11:27,109 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 465 transitions, 6643 flow [2022-07-12 10:11:27,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:27,110 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:11:27,110 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:11:27,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 10:11:27,110 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:11:27,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:11:27,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1481344092, now seen corresponding path program 10 times [2022-07-12 10:11:27,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:11:27,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749870906] [2022-07-12 10:11:27,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:11:27,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:11:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:11:27,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:11:27,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:11:27,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749870906] [2022-07-12 10:11:27,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749870906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:11:27,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:11:27,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-12 10:11:27,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760922449] [2022-07-12 10:11:27,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:11:27,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-12 10:11:27,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:11:27,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-12 10:11:27,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-07-12 10:11:27,602 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 194 [2022-07-12 10:11:27,603 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 465 transitions, 6643 flow. Second operand has 19 states, 19 states have (on average 94.42105263157895) internal successors, (1794), 19 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:27,603 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:11:27,603 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 194 [2022-07-12 10:11:27,603 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:11:32,326 INFO L129 PetriNetUnfolder]: 6878/18437 cut-off events. [2022-07-12 10:11:32,326 INFO L130 PetriNetUnfolder]: For 110443/110578 co-relation queries the response was YES. [2022-07-12 10:11:32,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67879 conditions, 18437 events. 6878/18437 cut-off events. For 110443/110578 co-relation queries the response was YES. Maximal size of possible extension queue 977. Compared 206361 event pairs, 2215 based on Foata normal form. 67/18327 useless extension candidates. Maximal degree in co-relation 67784. Up to 9408 conditions per place. [2022-07-12 10:11:32,491 INFO L132 encePairwiseOnDemand]: 169/194 looper letters, 361 selfloop transitions, 217 changer transitions 0/645 dead transitions. [2022-07-12 10:11:32,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 645 transitions, 9811 flow [2022-07-12 10:11:32,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:11:32,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:11:32,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1898 transitions. [2022-07-12 10:11:32,494 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5149213239283776 [2022-07-12 10:11:32,494 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1898 transitions. [2022-07-12 10:11:32,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1898 transitions. [2022-07-12 10:11:32,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:11:32,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1898 transitions. [2022-07-12 10:11:32,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 99.89473684210526) internal successors, (1898), 19 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:32,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:32,500 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:32,500 INFO L186 Difference]: Start difference. First operand has 352 places, 465 transitions, 6643 flow. Second operand 19 states and 1898 transitions. [2022-07-12 10:11:32,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 645 transitions, 9811 flow [2022-07-12 10:11:33,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 645 transitions, 9623 flow, removed 88 selfloop flow, removed 4 redundant places. [2022-07-12 10:11:33,058 INFO L242 Difference]: Finished difference. Result has 376 places, 525 transitions, 8281 flow [2022-07-12 10:11:33,058 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=6479, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=8281, PETRI_PLACES=376, PETRI_TRANSITIONS=525} [2022-07-12 10:11:33,059 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 196 predicate places. [2022-07-12 10:11:33,059 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 525 transitions, 8281 flow [2022-07-12 10:11:33,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 94.42105263157895) internal successors, (1794), 19 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:33,059 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:11:33,059 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:11:33,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 10:11:33,059 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:11:33,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:11:33,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1654887158, now seen corresponding path program 11 times [2022-07-12 10:11:33,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:11:33,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574596810] [2022-07-12 10:11:33,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:11:33,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:11:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:11:33,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:11:33,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:11:33,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574596810] [2022-07-12 10:11:33,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574596810] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:11:33,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:11:33,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:11:33,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503805442] [2022-07-12 10:11:33,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:11:33,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:11:33,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:11:33,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:11:33,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:11:33,495 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 194 [2022-07-12 10:11:33,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 525 transitions, 8281 flow. Second operand has 18 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:33,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:11:33,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 194 [2022-07-12 10:11:33,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:11:39,507 INFO L129 PetriNetUnfolder]: 6905/18529 cut-off events. [2022-07-12 10:11:39,507 INFO L130 PetriNetUnfolder]: For 128729/128827 co-relation queries the response was YES. [2022-07-12 10:11:39,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70637 conditions, 18529 events. 6905/18529 cut-off events. For 128729/128827 co-relation queries the response was YES. Maximal size of possible extension queue 981. Compared 207754 event pairs, 1199 based on Foata normal form. 44/18399 useless extension candidates. Maximal degree in co-relation 70532. Up to 4507 conditions per place. [2022-07-12 10:11:39,677 INFO L132 encePairwiseOnDemand]: 165/194 looper letters, 443 selfloop transitions, 306 changer transitions 0/816 dead transitions. [2022-07-12 10:11:39,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 816 transitions, 13102 flow [2022-07-12 10:11:39,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 10:11:39,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-12 10:11:39,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2899 transitions. [2022-07-12 10:11:39,680 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.515286171347316 [2022-07-12 10:11:39,680 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2899 transitions. [2022-07-12 10:11:39,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2899 transitions. [2022-07-12 10:11:39,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:11:39,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2899 transitions. [2022-07-12 10:11:39,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 99.96551724137932) internal successors, (2899), 29 states have internal predecessors, (2899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:39,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 194.0) internal successors, (5820), 30 states have internal predecessors, (5820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:39,688 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 194.0) internal successors, (5820), 30 states have internal predecessors, (5820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:39,688 INFO L186 Difference]: Start difference. First operand has 376 places, 525 transitions, 8281 flow. Second operand 29 states and 2899 transitions. [2022-07-12 10:11:39,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 816 transitions, 13102 flow [2022-07-12 10:11:40,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 816 transitions, 12866 flow, removed 60 selfloop flow, removed 6 redundant places. [2022-07-12 10:11:40,359 INFO L242 Difference]: Finished difference. Result has 409 places, 617 transitions, 10839 flow [2022-07-12 10:11:40,359 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=8094, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=10839, PETRI_PLACES=409, PETRI_TRANSITIONS=617} [2022-07-12 10:11:40,360 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 229 predicate places. [2022-07-12 10:11:40,360 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 617 transitions, 10839 flow [2022-07-12 10:11:40,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:40,360 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:11:40,360 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:11:40,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 10:11:40,361 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:11:40,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:11:40,361 INFO L85 PathProgramCache]: Analyzing trace with hash 264014474, now seen corresponding path program 12 times [2022-07-12 10:11:40,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:11:40,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810844809] [2022-07-12 10:11:40,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:11:40,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:11:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:11:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:11:40,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:11:40,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810844809] [2022-07-12 10:11:40,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810844809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:11:40,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:11:40,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-12 10:11:40,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425599947] [2022-07-12 10:11:40,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:11:40,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 10:11:40,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:11:40,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 10:11:40,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:11:40,758 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-07-12 10:11:40,758 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 617 transitions, 10839 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:40,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:11:40,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-07-12 10:11:40,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:11:44,518 INFO L129 PetriNetUnfolder]: 4349/14657 cut-off events. [2022-07-12 10:11:44,518 INFO L130 PetriNetUnfolder]: For 125478/125745 co-relation queries the response was YES. [2022-07-12 10:11:44,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58061 conditions, 14657 events. 4349/14657 cut-off events. For 125478/125745 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 173665 event pairs, 827 based on Foata normal form. 189/14634 useless extension candidates. Maximal degree in co-relation 57945. Up to 2504 conditions per place. [2022-07-12 10:11:44,651 INFO L132 encePairwiseOnDemand]: 169/194 looper letters, 413 selfloop transitions, 315 changer transitions 0/836 dead transitions. [2022-07-12 10:11:44,651 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 836 transitions, 15812 flow [2022-07-12 10:11:44,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:11:44,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:11:44,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1964 transitions. [2022-07-12 10:11:44,653 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5328269126424309 [2022-07-12 10:11:44,653 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1964 transitions. [2022-07-12 10:11:44,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1964 transitions. [2022-07-12 10:11:44,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:11:44,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1964 transitions. [2022-07-12 10:11:44,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 103.36842105263158) internal successors, (1964), 19 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:44,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:44,658 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:44,659 INFO L186 Difference]: Start difference. First operand has 409 places, 617 transitions, 10839 flow. Second operand 19 states and 1964 transitions. [2022-07-12 10:11:44,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 836 transitions, 15812 flow [2022-07-12 10:11:45,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 836 transitions, 15512 flow, removed 113 selfloop flow, removed 7 redundant places. [2022-07-12 10:11:45,280 INFO L242 Difference]: Finished difference. Result has 428 places, 700 transitions, 13741 flow [2022-07-12 10:11:45,280 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=10610, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=13741, PETRI_PLACES=428, PETRI_TRANSITIONS=700} [2022-07-12 10:11:45,281 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 248 predicate places. [2022-07-12 10:11:45,281 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 700 transitions, 13741 flow [2022-07-12 10:11:45,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:45,281 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:11:45,281 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:11:45,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 10:11:45,281 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:11:45,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:11:45,282 INFO L85 PathProgramCache]: Analyzing trace with hash 346283060, now seen corresponding path program 13 times [2022-07-12 10:11:45,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:11:45,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565962512] [2022-07-12 10:11:45,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:11:45,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:11:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:11:45,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:11:45,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:11:45,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565962512] [2022-07-12 10:11:45,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565962512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:11:45,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:11:45,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 10:11:45,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345534420] [2022-07-12 10:11:45,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:11:45,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:11:45,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:11:45,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:11:45,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:11:45,537 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 194 [2022-07-12 10:11:45,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 700 transitions, 13741 flow. Second operand has 13 states, 13 states have (on average 137.15384615384616) internal successors, (1783), 13 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:45,537 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:11:45,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 194 [2022-07-12 10:11:45,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:11:48,509 INFO L129 PetriNetUnfolder]: 2568/10745 cut-off events. [2022-07-12 10:11:48,509 INFO L130 PetriNetUnfolder]: For 134628/134815 co-relation queries the response was YES. [2022-07-12 10:11:48,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47973 conditions, 10745 events. 2568/10745 cut-off events. For 134628/134815 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 129910 event pairs, 859 based on Foata normal form. 70/10651 useless extension candidates. Maximal degree in co-relation 47848. Up to 3997 conditions per place. [2022-07-12 10:11:48,617 INFO L132 encePairwiseOnDemand]: 180/194 looper letters, 300 selfloop transitions, 79 changer transitions 0/822 dead transitions. [2022-07-12 10:11:48,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 822 transitions, 16265 flow [2022-07-12 10:11:48,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:11:48,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:11:48,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1977 transitions. [2022-07-12 10:11:48,619 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7279086892488954 [2022-07-12 10:11:48,619 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1977 transitions. [2022-07-12 10:11:48,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1977 transitions. [2022-07-12 10:11:48,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:11:48,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1977 transitions. [2022-07-12 10:11:48,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 141.21428571428572) internal successors, (1977), 14 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:48,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 194.0) internal successors, (2910), 15 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:48,624 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 194.0) internal successors, (2910), 15 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:48,624 INFO L186 Difference]: Start difference. First operand has 428 places, 700 transitions, 13741 flow. Second operand 14 states and 1977 transitions. [2022-07-12 10:11:48,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 822 transitions, 16265 flow [2022-07-12 10:11:49,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 822 transitions, 16078 flow, removed 79 selfloop flow, removed 6 redundant places. [2022-07-12 10:11:49,297 INFO L242 Difference]: Finished difference. Result has 438 places, 711 transitions, 13980 flow [2022-07-12 10:11:49,297 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=13454, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13980, PETRI_PLACES=438, PETRI_TRANSITIONS=711} [2022-07-12 10:11:49,298 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 258 predicate places. [2022-07-12 10:11:49,298 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 711 transitions, 13980 flow [2022-07-12 10:11:49,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 137.15384615384616) internal successors, (1783), 13 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:49,298 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:11:49,299 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:11:49,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 10:11:49,299 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:11:49,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:11:49,299 INFO L85 PathProgramCache]: Analyzing trace with hash -405297222, now seen corresponding path program 14 times [2022-07-12 10:11:49,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:11:49,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934706349] [2022-07-12 10:11:49,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:11:49,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:11:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:11:49,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:11:49,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:11:49,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934706349] [2022-07-12 10:11:49,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934706349] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:11:49,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:11:49,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:11:49,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518657568] [2022-07-12 10:11:49,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:11:49,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:11:49,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:11:49,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:11:49,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:11:49,501 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 194 [2022-07-12 10:11:49,501 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 711 transitions, 13980 flow. Second operand has 11 states, 11 states have (on average 145.0909090909091) internal successors, (1596), 11 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:49,501 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:11:49,501 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 194 [2022-07-12 10:11:49,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:11:52,355 INFO L129 PetriNetUnfolder]: 2383/10810 cut-off events. [2022-07-12 10:11:52,355 INFO L130 PetriNetUnfolder]: For 120972/121237 co-relation queries the response was YES. [2022-07-12 10:11:52,453 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47647 conditions, 10810 events. 2383/10810 cut-off events. For 120972/121237 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 134553 event pairs, 677 based on Foata normal form. 62/10699 useless extension candidates. Maximal degree in co-relation 47518. Up to 2596 conditions per place. [2022-07-12 10:11:52,478 INFO L132 encePairwiseOnDemand]: 182/194 looper letters, 244 selfloop transitions, 84 changer transitions 0/840 dead transitions. [2022-07-12 10:11:52,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 840 transitions, 16309 flow [2022-07-12 10:11:52,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:11:52,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:11:52,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1650 transitions. [2022-07-12 10:11:52,480 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7731958762886598 [2022-07-12 10:11:52,480 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1650 transitions. [2022-07-12 10:11:52,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1650 transitions. [2022-07-12 10:11:52,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:11:52,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1650 transitions. [2022-07-12 10:11:52,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 150.0) internal successors, (1650), 11 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) [2022-07-12 10:11:52,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:52,484 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:52,484 INFO L186 Difference]: Start difference. First operand has 438 places, 711 transitions, 13980 flow. Second operand 11 states and 1650 transitions. [2022-07-12 10:11:52,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 840 transitions, 16309 flow [2022-07-12 10:11:53,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 840 transitions, 16200 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-07-12 10:11:53,195 INFO L242 Difference]: Finished difference. Result has 443 places, 720 transitions, 14224 flow [2022-07-12 10:11:53,195 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=13885, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=711, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14224, PETRI_PLACES=443, PETRI_TRANSITIONS=720} [2022-07-12 10:11:53,196 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 263 predicate places. [2022-07-12 10:11:53,196 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 720 transitions, 14224 flow [2022-07-12 10:11:53,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 145.0909090909091) internal successors, (1596), 11 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:53,196 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:11:53,196 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:11:53,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 10:11:53,197 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:11:53,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:11:53,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1126597044, now seen corresponding path program 15 times [2022-07-12 10:11:53,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:11:53,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718959801] [2022-07-12 10:11:53,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:11:53,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:11:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:11:53,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:11:53,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:11:53,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718959801] [2022-07-12 10:11:53,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718959801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:11:53,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:11:53,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:11:53,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190853925] [2022-07-12 10:11:53,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:11:53,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:11:53,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:11:53,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:11:53,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:11:53,639 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 194 [2022-07-12 10:11:53,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 720 transitions, 14224 flow. Second operand has 18 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:11:53,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:11:53,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 194 [2022-07-12 10:11:53,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:12:00,740 INFO L129 PetriNetUnfolder]: 8216/23280 cut-off events. [2022-07-12 10:12:00,740 INFO L130 PetriNetUnfolder]: For 245444/245492 co-relation queries the response was YES. [2022-07-12 10:12:01,090 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104193 conditions, 23280 events. 8216/23280 cut-off events. For 245444/245492 co-relation queries the response was YES. Maximal size of possible extension queue 1207. Compared 276173 event pairs, 3774 based on Foata normal form. 15/23086 useless extension candidates. Maximal degree in co-relation 104061. Up to 7712 conditions per place. [2022-07-12 10:12:01,150 INFO L132 encePairwiseOnDemand]: 168/194 looper letters, 593 selfloop transitions, 291 changer transitions 0/951 dead transitions. [2022-07-12 10:12:01,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 951 transitions, 19353 flow [2022-07-12 10:12:01,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:12:01,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:12:01,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1913 transitions. [2022-07-12 10:12:01,152 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5189907759088442 [2022-07-12 10:12:01,152 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1913 transitions. [2022-07-12 10:12:01,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1913 transitions. [2022-07-12 10:12:01,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:12:01,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1913 transitions. [2022-07-12 10:12:01,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 100.6842105263158) internal successors, (1913), 19 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:12:01,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:12:01,156 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:12:01,156 INFO L186 Difference]: Start difference. First operand has 443 places, 720 transitions, 14224 flow. Second operand 19 states and 1913 transitions. [2022-07-12 10:12:01,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 951 transitions, 19353 flow [2022-07-12 10:12:02,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 951 transitions, 19219 flow, removed 13 selfloop flow, removed 7 redundant places. [2022-07-12 10:12:02,664 INFO L242 Difference]: Finished difference. Result has 465 places, 795 transitions, 16833 flow [2022-07-12 10:12:02,665 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=14106, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=16833, PETRI_PLACES=465, PETRI_TRANSITIONS=795} [2022-07-12 10:12:02,665 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 285 predicate places. [2022-07-12 10:12:02,665 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 795 transitions, 16833 flow [2022-07-12 10:12:02,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:12:02,665 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:12:02,666 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:12:02,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 10:12:02,666 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:12:02,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:12:02,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1935650414, now seen corresponding path program 16 times [2022-07-12 10:12:02,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:12:02,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101181063] [2022-07-12 10:12:02,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:12:02,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:12:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:12:02,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:12:02,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:12:02,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101181063] [2022-07-12 10:12:02,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101181063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:12:02,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:12:02,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 10:12:02,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224657861] [2022-07-12 10:12:02,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:12:02,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 10:12:02,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:12:02,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 10:12:02,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:12:02,917 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 194 [2022-07-12 10:12:02,918 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 795 transitions, 16833 flow. Second operand has 12 states, 12 states have (on average 137.41666666666666) internal successors, (1649), 12 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:12:02,918 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:12:02,918 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 194 [2022-07-12 10:12:02,918 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:12:06,499 INFO L129 PetriNetUnfolder]: 2662/11616 cut-off events. [2022-07-12 10:12:06,499 INFO L130 PetriNetUnfolder]: For 168465/168691 co-relation queries the response was YES. [2022-07-12 10:12:06,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55916 conditions, 11616 events. 2662/11616 cut-off events. For 168465/168691 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 144175 event pairs, 1464 based on Foata normal form. 92/11515 useless extension candidates. Maximal degree in co-relation 55774. Up to 5074 conditions per place. [2022-07-12 10:12:06,638 INFO L132 encePairwiseOnDemand]: 180/194 looper letters, 252 selfloop transitions, 125 changer transitions 0/840 dead transitions. [2022-07-12 10:12:06,638 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 840 transitions, 17748 flow [2022-07-12 10:12:06,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:12:06,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:12:06,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1975 transitions. [2022-07-12 10:12:06,640 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7271723122238586 [2022-07-12 10:12:06,640 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1975 transitions. [2022-07-12 10:12:06,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1975 transitions. [2022-07-12 10:12:06,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:12:06,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1975 transitions. [2022-07-12 10:12:06,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 141.07142857142858) internal successors, (1975), 14 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:12:06,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 194.0) internal successors, (2910), 15 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:12:06,644 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 194.0) internal successors, (2910), 15 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:12:06,644 INFO L186 Difference]: Start difference. First operand has 465 places, 795 transitions, 16833 flow. Second operand 14 states and 1975 transitions. [2022-07-12 10:12:06,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 840 transitions, 17748 flow [2022-07-12 10:12:07,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 840 transitions, 17473 flow, removed 119 selfloop flow, removed 5 redundant places. [2022-07-12 10:12:07,575 INFO L242 Difference]: Finished difference. Result has 475 places, 772 transitions, 16226 flow [2022-07-12 10:12:07,575 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=15874, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=643, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=16226, PETRI_PLACES=475, PETRI_TRANSITIONS=772} [2022-07-12 10:12:07,576 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 295 predicate places. [2022-07-12 10:12:07,576 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 772 transitions, 16226 flow [2022-07-12 10:12:07,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 137.41666666666666) internal successors, (1649), 12 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:12:07,576 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:12:07,576 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:12:07,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 10:12:07,576 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:12:07,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:12:07,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1320962584, now seen corresponding path program 17 times [2022-07-12 10:12:07,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:12:07,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020693654] [2022-07-12 10:12:07,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:12:07,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:12:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:12:07,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:12:07,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:12:07,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020693654] [2022-07-12 10:12:07,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020693654] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:12:07,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:12:07,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:12:07,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119259503] [2022-07-12 10:12:07,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:12:07,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:12:07,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:12:07,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:12:07,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:12:07,937 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 194 [2022-07-12 10:12:07,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 772 transitions, 16226 flow. Second operand has 18 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:12:07,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:12:07,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 194 [2022-07-12 10:12:07,938 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand