/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 05:10:46,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 05:10:46,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 05:10:46,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 05:10:46,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 05:10:46,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 05:10:46,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 05:10:46,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 05:10:46,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 05:10:46,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 05:10:46,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 05:10:46,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 05:10:46,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 05:10:46,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 05:10:46,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 05:10:46,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 05:10:46,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 05:10:46,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 05:10:46,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 05:10:46,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 05:10:46,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 05:10:46,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 05:10:46,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 05:10:46,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 05:10:46,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 05:10:46,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 05:10:46,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 05:10:46,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 05:10:46,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 05:10:46,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 05:10:46,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 05:10:46,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 05:10:46,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 05:10:46,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 05:10:46,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 05:10:46,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 05:10:46,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 05:10:46,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 05:10:46,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 05:10:46,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 05:10:46,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 05:10:46,252 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-Before.epf [2022-01-19 05:10:46,281 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 05:10:46,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 05:10:46,283 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 05:10:46,283 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 05:10:46,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 05:10:46,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 05:10:46,283 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 05:10:46,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 05:10:46,284 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 05:10:46,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 05:10:46,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 05:10:46,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 05:10:46,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 05:10:46,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 05:10:46,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 05:10:46,285 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 05:10:46,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 05:10:46,285 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 05:10:46,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 05:10:46,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 05:10:46,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 05:10:46,286 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 05:10:46,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 05:10:46,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 05:10:46,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 05:10:46,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 05:10:46,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 05:10:46,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 05:10:46,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 05:10:46,288 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 05:10:46,288 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 05:10:46,288 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 05:10:46,288 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 05:10:46,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 05:10:46,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 05:10:46,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 05:10:46,537 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 05:10:46,539 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 05:10:46,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i [2022-01-19 05:10:46,614 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/834d32927/b1901a8ec6f245b7a155811f821f2b6f/FLAGd3128da53 [2022-01-19 05:10:47,076 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 05:10:47,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i [2022-01-19 05:10:47,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/834d32927/b1901a8ec6f245b7a155811f821f2b6f/FLAGd3128da53 [2022-01-19 05:10:47,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/834d32927/b1901a8ec6f245b7a155811f821f2b6f [2022-01-19 05:10:47,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 05:10:47,109 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 05:10:47,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 05:10:47,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 05:10:47,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 05:10:47,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 05:10:47" (1/1) ... [2022-01-19 05:10:47,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb37f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:10:47, skipping insertion in model container [2022-01-19 05:10:47,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 05:10:47" (1/1) ... [2022-01-19 05:10:47,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 05:10:47,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 05:10:47,339 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-01-19 05:10:47,694 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i[75009,75022] [2022-01-19 05:10:47,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 05:10:47,737 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 05:10:47,746 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-01-19 05:10:47,778 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i[75009,75022] [2022-01-19 05:10:47,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 05:10:47,882 INFO L208 MainTranslator]: Completed translation [2022-01-19 05:10:47,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:10:47 WrapperNode [2022-01-19 05:10:47,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 05:10:47,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 05:10:47,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 05:10:47,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 05:10:47,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:10:47" (1/1) ... [2022-01-19 05:10:47,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:10:47" (1/1) ... [2022-01-19 05:10:47,943 INFO L137 Inliner]: procedures = 468, calls = 52, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2022-01-19 05:10:47,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 05:10:47,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 05:10:47,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 05:10:47,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 05:10:47,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:10:47" (1/1) ... [2022-01-19 05:10:47,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:10:47" (1/1) ... [2022-01-19 05:10:47,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:10:47" (1/1) ... [2022-01-19 05:10:47,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:10:47" (1/1) ... [2022-01-19 05:10:47,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:10:47" (1/1) ... [2022-01-19 05:10:47,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:10:47" (1/1) ... [2022-01-19 05:10:47,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:10:47" (1/1) ... [2022-01-19 05:10:47,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 05:10:47,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 05:10:47,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 05:10:47,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 05:10:47,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:10:47" (1/1) ... [2022-01-19 05:10:47,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 05:10:48,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:10:48,019 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-19 05:10:48,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-19 05:10:48,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 05:10:48,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 05:10:48,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 05:10:48,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 05:10:48,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 05:10:48,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-19 05:10:48,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 05:10:48,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 05:10:48,061 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-01-19 05:10:48,061 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-01-19 05:10:48,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 05:10:48,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 05:10:48,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 05:10:48,063 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 05:10:48,268 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 05:10:48,269 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 05:10:48,502 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 05:10:48,520 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 05:10:48,521 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 05:10:48,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 05:10:48 BoogieIcfgContainer [2022-01-19 05:10:48,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 05:10:48,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 05:10:48,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 05:10:48,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 05:10:48,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 05:10:47" (1/3) ... [2022-01-19 05:10:48,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e52b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 05:10:48, skipping insertion in model container [2022-01-19 05:10:48,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:10:47" (2/3) ... [2022-01-19 05:10:48,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e52b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 05:10:48, skipping insertion in model container [2022-01-19 05:10:48,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 05:10:48" (3/3) ... [2022-01-19 05:10:48,529 INFO L111 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2022-01-19 05:10:48,533 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 05:10:48,534 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-19 05:10:48,534 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 05:10:48,567 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,567 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,568 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,568 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,568 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,568 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,568 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,568 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,568 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,569 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,569 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,569 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,569 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,569 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,569 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,569 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,569 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,570 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,570 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,570 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,570 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,570 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,570 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,570 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,571 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,571 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,571 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,571 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,572 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,572 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,572 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,572 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,572 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,572 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,573 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,573 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,573 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,573 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,573 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,574 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,574 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,574 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,574 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,574 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,575 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,575 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,575 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,575 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,575 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,575 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,576 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,576 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,576 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,576 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,576 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,576 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,576 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,577 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,577 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,577 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,577 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,577 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,577 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,578 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,578 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,578 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,578 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,578 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,578 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,579 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,579 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,579 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,579 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,579 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,580 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,580 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,580 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,580 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,580 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,580 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,581 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,581 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,581 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,581 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,581 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,581 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,582 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,582 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,582 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,582 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,582 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,583 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,585 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,585 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,585 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,586 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,586 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,586 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,586 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,586 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,586 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,586 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,587 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,587 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,588 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,588 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,588 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,588 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,588 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,588 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,588 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,589 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:10:48,592 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 05:10:48,626 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 05:10:48,633 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 05:10:48,633 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-01-19 05:10:48,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 184 places, 186 transitions, 388 flow [2022-01-19 05:10:48,708 INFO L129 PetriNetUnfolder]: 10/231 cut-off events. [2022-01-19 05:10:48,708 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 05:10:48,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 231 events. 10/231 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 336 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 137. Up to 4 conditions per place. [2022-01-19 05:10:48,712 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 186 transitions, 388 flow [2022-01-19 05:10:48,724 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 172 transitions, 356 flow [2022-01-19 05:10:48,744 INFO L129 PetriNetUnfolder]: 0/46 cut-off events. [2022-01-19 05:10:48,744 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 05:10:48,744 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:10:48,745 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:10:48,745 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:10:48,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:10:48,752 INFO L85 PathProgramCache]: Analyzing trace with hash -34102460, now seen corresponding path program 1 times [2022-01-19 05:10:48,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:10:48,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104799604] [2022-01-19 05:10:48,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:10:48,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:10:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:10:49,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:10:49,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:10:49,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104799604] [2022-01-19 05:10:49,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104799604] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:10:49,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:10:49,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 05:10:49,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964815799] [2022-01-19 05:10:49,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:10:49,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 05:10:49,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:10:49,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 05:10:49,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 05:10:49,215 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 186 [2022-01-19 05:10:49,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 172 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:49,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:10:49,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 186 [2022-01-19 05:10:49,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:10:49,606 INFO L129 PetriNetUnfolder]: 361/965 cut-off events. [2022-01-19 05:10:49,607 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-01-19 05:10:49,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1656 conditions, 965 events. 361/965 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5057 event pairs, 216 based on Foata normal form. 20/933 useless extension candidates. Maximal degree in co-relation 1409. Up to 397 conditions per place. [2022-01-19 05:10:49,620 INFO L132 encePairwiseOnDemand]: 164/186 looper letters, 53 selfloop transitions, 17 changer transitions 1/168 dead transitions. [2022-01-19 05:10:49,621 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 168 transitions, 490 flow [2022-01-19 05:10:49,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 05:10:49,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 05:10:49,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1057 transitions. [2022-01-19 05:10:49,642 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6314217443249701 [2022-01-19 05:10:49,642 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1057 transitions. [2022-01-19 05:10:49,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1057 transitions. [2022-01-19 05:10:49,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:10:49,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1057 transitions. [2022-01-19 05:10:49,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.44444444444444) internal successors, (1057), 9 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:49,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:49,665 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:49,666 INFO L186 Difference]: Start difference. First operand has 172 places, 172 transitions, 356 flow. Second operand 9 states and 1057 transitions. [2022-01-19 05:10:49,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 168 transitions, 490 flow [2022-01-19 05:10:49,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 168 transitions, 482 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 05:10:49,680 INFO L242 Difference]: Finished difference. Result has 170 places, 161 transitions, 367 flow [2022-01-19 05:10:49,682 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=367, PETRI_PLACES=170, PETRI_TRANSITIONS=161} [2022-01-19 05:10:49,685 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, -2 predicate places. [2022-01-19 05:10:49,685 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 161 transitions, 367 flow [2022-01-19 05:10:49,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:49,686 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:10:49,686 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:10:49,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 05:10:49,687 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:10:49,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:10:49,688 INFO L85 PathProgramCache]: Analyzing trace with hash -888642596, now seen corresponding path program 1 times [2022-01-19 05:10:49,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:10:49,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005560442] [2022-01-19 05:10:49,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:10:49,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:10:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:10:49,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:10:49,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:10:49,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005560442] [2022-01-19 05:10:49,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005560442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:10:49,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:10:49,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 05:10:49,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639144222] [2022-01-19 05:10:49,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:10:49,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 05:10:49,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:10:49,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 05:10:49,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 05:10:49,884 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 186 [2022-01-19 05:10:49,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 161 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:49,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:10:49,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 186 [2022-01-19 05:10:49,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:10:50,136 INFO L129 PetriNetUnfolder]: 361/971 cut-off events. [2022-01-19 05:10:50,137 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-01-19 05:10:50,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1739 conditions, 971 events. 361/971 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5044 event pairs, 120 based on Foata normal form. 1/940 useless extension candidates. Maximal degree in co-relation 694. Up to 261 conditions per place. [2022-01-19 05:10:50,144 INFO L132 encePairwiseOnDemand]: 167/186 looper letters, 61 selfloop transitions, 18 changer transitions 1/176 dead transitions. [2022-01-19 05:10:50,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 176 transitions, 559 flow [2022-01-19 05:10:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 05:10:50,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 05:10:50,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1171 transitions. [2022-01-19 05:10:50,147 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6295698924731182 [2022-01-19 05:10:50,147 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1171 transitions. [2022-01-19 05:10:50,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1171 transitions. [2022-01-19 05:10:50,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:10:50,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1171 transitions. [2022-01-19 05:10:50,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 117.1) internal successors, (1171), 10 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:50,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:50,156 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:50,158 INFO L186 Difference]: Start difference. First operand has 170 places, 161 transitions, 367 flow. Second operand 10 states and 1171 transitions. [2022-01-19 05:10:50,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 176 transitions, 559 flow [2022-01-19 05:10:50,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 176 transitions, 530 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-01-19 05:10:50,171 INFO L242 Difference]: Finished difference. Result has 171 places, 160 transitions, 378 flow [2022-01-19 05:10:50,172 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=378, PETRI_PLACES=171, PETRI_TRANSITIONS=160} [2022-01-19 05:10:50,172 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, -1 predicate places. [2022-01-19 05:10:50,173 INFO L470 AbstractCegarLoop]: Abstraction has has 171 places, 160 transitions, 378 flow [2022-01-19 05:10:50,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:50,173 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:10:50,173 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:10:50,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 05:10:50,174 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:10:50,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:10:50,175 INFO L85 PathProgramCache]: Analyzing trace with hash -170107804, now seen corresponding path program 1 times [2022-01-19 05:10:50,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:10:50,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692883845] [2022-01-19 05:10:50,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:10:50,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:10:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:10:50,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:10:50,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:10:50,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692883845] [2022-01-19 05:10:50,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692883845] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:10:50,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:10:50,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 05:10:50,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961372773] [2022-01-19 05:10:50,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:10:50,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 05:10:50,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:10:50,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 05:10:50,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 05:10:50,324 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 186 [2022-01-19 05:10:50,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 160 transitions, 378 flow. Second operand has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:50,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:10:50,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 186 [2022-01-19 05:10:50,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:10:50,755 INFO L129 PetriNetUnfolder]: 832/1931 cut-off events. [2022-01-19 05:10:50,756 INFO L130 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2022-01-19 05:10:50,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3674 conditions, 1931 events. 832/1931 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11817 event pairs, 169 based on Foata normal form. 32/1930 useless extension candidates. Maximal degree in co-relation 968. Up to 499 conditions per place. [2022-01-19 05:10:50,769 INFO L132 encePairwiseOnDemand]: 165/186 looper letters, 100 selfloop transitions, 49 changer transitions 0/245 dead transitions. [2022-01-19 05:10:50,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 245 transitions, 862 flow [2022-01-19 05:10:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 05:10:50,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 05:10:50,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1540 transitions. [2022-01-19 05:10:50,773 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6368899917287014 [2022-01-19 05:10:50,773 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1540 transitions. [2022-01-19 05:10:50,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1540 transitions. [2022-01-19 05:10:50,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:10:50,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1540 transitions. [2022-01-19 05:10:50,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 118.46153846153847) internal successors, (1540), 13 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:50,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 186.0) internal successors, (2604), 14 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:50,782 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 186.0) internal successors, (2604), 14 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:50,782 INFO L186 Difference]: Start difference. First operand has 171 places, 160 transitions, 378 flow. Second operand 13 states and 1540 transitions. [2022-01-19 05:10:50,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 245 transitions, 862 flow [2022-01-19 05:10:50,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 245 transitions, 816 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-01-19 05:10:50,789 INFO L242 Difference]: Finished difference. Result has 183 places, 197 transitions, 648 flow [2022-01-19 05:10:50,790 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=648, PETRI_PLACES=183, PETRI_TRANSITIONS=197} [2022-01-19 05:10:50,790 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 11 predicate places. [2022-01-19 05:10:50,790 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 197 transitions, 648 flow [2022-01-19 05:10:50,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:50,791 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:10:50,791 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:10:50,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 05:10:50,792 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:10:50,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:10:50,792 INFO L85 PathProgramCache]: Analyzing trace with hash 896697388, now seen corresponding path program 1 times [2022-01-19 05:10:50,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:10:50,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594487369] [2022-01-19 05:10:50,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:10:50,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:10:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:10:50,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:10:50,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:10:50,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594487369] [2022-01-19 05:10:50,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594487369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:10:50,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:10:50,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 05:10:50,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325462453] [2022-01-19 05:10:50,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:10:50,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 05:10:50,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:10:50,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 05:10:50,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 05:10:50,940 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 186 [2022-01-19 05:10:50,941 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 197 transitions, 648 flow. Second operand has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:50,941 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:10:50,941 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 186 [2022-01-19 05:10:50,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:10:51,463 INFO L129 PetriNetUnfolder]: 1085/2496 cut-off events. [2022-01-19 05:10:51,464 INFO L130 PetriNetUnfolder]: For 10877/10945 co-relation queries the response was YES. [2022-01-19 05:10:51,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8992 conditions, 2496 events. 1085/2496 cut-off events. For 10877/10945 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 16659 event pairs, 218 based on Foata normal form. 47/2510 useless extension candidates. Maximal degree in co-relation 7714. Up to 732 conditions per place. [2022-01-19 05:10:51,485 INFO L132 encePairwiseOnDemand]: 167/186 looper letters, 74 selfloop transitions, 48 changer transitions 69/286 dead transitions. [2022-01-19 05:10:51,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 286 transitions, 1732 flow [2022-01-19 05:10:51,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 05:10:51,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 05:10:51,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1307 transitions. [2022-01-19 05:10:51,489 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6388074291300098 [2022-01-19 05:10:51,489 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1307 transitions. [2022-01-19 05:10:51,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1307 transitions. [2022-01-19 05:10:51,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:10:51,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1307 transitions. [2022-01-19 05:10:51,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 118.81818181818181) internal successors, (1307), 11 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:51,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:51,495 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:51,495 INFO L186 Difference]: Start difference. First operand has 183 places, 197 transitions, 648 flow. Second operand 11 states and 1307 transitions. [2022-01-19 05:10:51,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 286 transitions, 1732 flow [2022-01-19 05:10:51,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 286 transitions, 1732 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 05:10:51,516 INFO L242 Difference]: Finished difference. Result has 201 places, 203 transitions, 961 flow [2022-01-19 05:10:51,517 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=961, PETRI_PLACES=201, PETRI_TRANSITIONS=203} [2022-01-19 05:10:51,518 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 29 predicate places. [2022-01-19 05:10:51,518 INFO L470 AbstractCegarLoop]: Abstraction has has 201 places, 203 transitions, 961 flow [2022-01-19 05:10:51,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:51,519 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:10:51,519 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:10:51,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 05:10:51,519 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:10:51,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:10:51,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1717393044, now seen corresponding path program 1 times [2022-01-19 05:10:51,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:10:51,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313133424] [2022-01-19 05:10:51,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:10:51,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:10:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:10:51,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:10:51,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:10:51,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313133424] [2022-01-19 05:10:51,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313133424] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:10:51,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:10:51,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 05:10:51,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320346773] [2022-01-19 05:10:51,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:10:51,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 05:10:51,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:10:51,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 05:10:51,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 05:10:51,630 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 186 [2022-01-19 05:10:51,631 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 203 transitions, 961 flow. Second operand has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:51,631 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:10:51,631 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 186 [2022-01-19 05:10:51,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:10:51,704 INFO L129 PetriNetUnfolder]: 47/289 cut-off events. [2022-01-19 05:10:51,704 INFO L130 PetriNetUnfolder]: For 791/871 co-relation queries the response was YES. [2022-01-19 05:10:51,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 289 events. 47/289 cut-off events. For 791/871 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 972 event pairs, 11 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 633. Up to 31 conditions per place. [2022-01-19 05:10:51,706 INFO L132 encePairwiseOnDemand]: 181/186 looper letters, 19 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2022-01-19 05:10:51,706 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 139 transitions, 456 flow [2022-01-19 05:10:51,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 05:10:51,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 05:10:51,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 966 transitions. [2022-01-19 05:10:51,709 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8655913978494624 [2022-01-19 05:10:51,709 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 966 transitions. [2022-01-19 05:10:51,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 966 transitions. [2022-01-19 05:10:51,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:10:51,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 966 transitions. [2022-01-19 05:10:51,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:51,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:51,713 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:51,714 INFO L186 Difference]: Start difference. First operand has 201 places, 203 transitions, 961 flow. Second operand 6 states and 966 transitions. [2022-01-19 05:10:51,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 139 transitions, 456 flow [2022-01-19 05:10:51,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 139 transitions, 336 flow, removed 40 selfloop flow, removed 19 redundant places. [2022-01-19 05:10:51,718 INFO L242 Difference]: Finished difference. Result has 144 places, 131 transitions, 282 flow [2022-01-19 05:10:51,718 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=282, PETRI_PLACES=144, PETRI_TRANSITIONS=131} [2022-01-19 05:10:51,720 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, -28 predicate places. [2022-01-19 05:10:51,721 INFO L470 AbstractCegarLoop]: Abstraction has has 144 places, 131 transitions, 282 flow [2022-01-19 05:10:51,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:51,722 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:10:51,722 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:10:51,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 05:10:51,722 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:10:51,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:10:51,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1971603667, now seen corresponding path program 1 times [2022-01-19 05:10:51,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:10:51,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861163759] [2022-01-19 05:10:51,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:10:51,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:10:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:10:52,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:10:52,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:10:52,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861163759] [2022-01-19 05:10:52,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861163759] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:10:52,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:10:52,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-19 05:10:52,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412890589] [2022-01-19 05:10:52,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:10:52,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 05:10:52,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:10:52,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 05:10:52,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-01-19 05:10:52,576 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:10:52,577 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 131 transitions, 282 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:52,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:10:52,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:10:52,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:10:54,439 INFO L129 PetriNetUnfolder]: 600/1448 cut-off events. [2022-01-19 05:10:54,439 INFO L130 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2022-01-19 05:10:54,441 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2905 conditions, 1448 events. 600/1448 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 8004 event pairs, 125 based on Foata normal form. 0/1408 useless extension candidates. Maximal degree in co-relation 2897. Up to 269 conditions per place. [2022-01-19 05:10:54,446 INFO L132 encePairwiseOnDemand]: 159/186 looper letters, 142 selfloop transitions, 42 changer transitions 0/247 dead transitions. [2022-01-19 05:10:54,446 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 247 transitions, 927 flow [2022-01-19 05:10:54,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-19 05:10:54,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-19 05:10:54,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2448 transitions. [2022-01-19 05:10:54,454 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5062034739454094 [2022-01-19 05:10:54,454 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2448 transitions. [2022-01-19 05:10:54,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2448 transitions. [2022-01-19 05:10:54,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:10:54,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2448 transitions. [2022-01-19 05:10:54,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 94.15384615384616) internal successors, (2448), 26 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:54,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:54,468 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:54,468 INFO L186 Difference]: Start difference. First operand has 144 places, 131 transitions, 282 flow. Second operand 26 states and 2448 transitions. [2022-01-19 05:10:54,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 247 transitions, 927 flow [2022-01-19 05:10:54,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 247 transitions, 920 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 05:10:54,472 INFO L242 Difference]: Finished difference. Result has 174 places, 161 transitions, 514 flow [2022-01-19 05:10:54,473 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=514, PETRI_PLACES=174, PETRI_TRANSITIONS=161} [2022-01-19 05:10:54,473 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 2 predicate places. [2022-01-19 05:10:54,474 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 161 transitions, 514 flow [2022-01-19 05:10:54,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:54,474 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:10:54,475 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:10:54,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 05:10:54,475 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:10:54,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:10:54,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1315149385, now seen corresponding path program 2 times [2022-01-19 05:10:54,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:10:54,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057725065] [2022-01-19 05:10:54,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:10:54,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:10:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:10:55,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:10:55,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:10:55,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057725065] [2022-01-19 05:10:55,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057725065] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:10:55,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:10:55,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-19 05:10:55,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881079036] [2022-01-19 05:10:55,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:10:55,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 05:10:55,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:10:55,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 05:10:55,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-01-19 05:10:55,052 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:10:55,053 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 161 transitions, 514 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:55,053 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:10:55,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:10:55,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:10:56,405 INFO L129 PetriNetUnfolder]: 950/2367 cut-off events. [2022-01-19 05:10:56,406 INFO L130 PetriNetUnfolder]: For 1865/1885 co-relation queries the response was YES. [2022-01-19 05:10:56,411 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5943 conditions, 2367 events. 950/2367 cut-off events. For 1865/1885 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 15966 event pairs, 234 based on Foata normal form. 13/2297 useless extension candidates. Maximal degree in co-relation 5927. Up to 680 conditions per place. [2022-01-19 05:10:56,420 INFO L132 encePairwiseOnDemand]: 159/186 looper letters, 157 selfloop transitions, 52 changer transitions 0/272 dead transitions. [2022-01-19 05:10:56,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 272 transitions, 1410 flow [2022-01-19 05:10:56,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 05:10:56,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 05:10:56,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1809 transitions. [2022-01-19 05:10:56,427 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5118845500848896 [2022-01-19 05:10:56,427 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1809 transitions. [2022-01-19 05:10:56,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1809 transitions. [2022-01-19 05:10:56,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:10:56,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1809 transitions. [2022-01-19 05:10:56,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 95.21052631578948) internal successors, (1809), 19 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:56,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:56,438 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:56,438 INFO L186 Difference]: Start difference. First operand has 174 places, 161 transitions, 514 flow. Second operand 19 states and 1809 transitions. [2022-01-19 05:10:56,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 272 transitions, 1410 flow [2022-01-19 05:10:56,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 272 transitions, 1381 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 05:10:56,447 INFO L242 Difference]: Finished difference. Result has 195 places, 193 transitions, 875 flow [2022-01-19 05:10:56,448 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=875, PETRI_PLACES=195, PETRI_TRANSITIONS=193} [2022-01-19 05:10:56,448 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 23 predicate places. [2022-01-19 05:10:56,449 INFO L470 AbstractCegarLoop]: Abstraction has has 195 places, 193 transitions, 875 flow [2022-01-19 05:10:56,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:56,449 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:10:56,450 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:10:56,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 05:10:56,450 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:10:56,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:10:56,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1469662633, now seen corresponding path program 3 times [2022-01-19 05:10:56,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:10:56,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985309619] [2022-01-19 05:10:56,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:10:56,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:10:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:10:56,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:10:56,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:10:56,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985309619] [2022-01-19 05:10:56,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985309619] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:10:56,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:10:56,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 05:10:56,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630477319] [2022-01-19 05:10:56,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:10:56,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 05:10:56,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:10:56,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 05:10:56,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-01-19 05:10:56,866 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-01-19 05:10:56,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 193 transitions, 875 flow. Second operand has 16 states, 16 states have (on average 92.6875) internal successors, (1483), 16 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:56,868 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:10:56,868 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-01-19 05:10:56,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:10:58,098 INFO L129 PetriNetUnfolder]: 974/2618 cut-off events. [2022-01-19 05:10:58,099 INFO L130 PetriNetUnfolder]: For 3769/3785 co-relation queries the response was YES. [2022-01-19 05:10:58,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7613 conditions, 2618 events. 974/2618 cut-off events. For 3769/3785 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 19114 event pairs, 173 based on Foata normal form. 3/2566 useless extension candidates. Maximal degree in co-relation 7588. Up to 571 conditions per place. [2022-01-19 05:10:58,121 INFO L132 encePairwiseOnDemand]: 160/186 looper letters, 164 selfloop transitions, 77 changer transitions 0/308 dead transitions. [2022-01-19 05:10:58,121 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 308 transitions, 2042 flow [2022-01-19 05:10:58,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 05:10:58,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 05:10:58,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2292 transitions. [2022-01-19 05:10:58,127 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5134408602150538 [2022-01-19 05:10:58,127 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2292 transitions. [2022-01-19 05:10:58,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2292 transitions. [2022-01-19 05:10:58,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:10:58,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2292 transitions. [2022-01-19 05:10:58,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 95.5) internal successors, (2292), 24 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:58,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 186.0) internal successors, (4650), 25 states have internal predecessors, (4650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:58,141 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 186.0) internal successors, (4650), 25 states have internal predecessors, (4650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:58,141 INFO L186 Difference]: Start difference. First operand has 195 places, 193 transitions, 875 flow. Second operand 24 states and 2292 transitions. [2022-01-19 05:10:58,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 308 transitions, 2042 flow [2022-01-19 05:10:58,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 308 transitions, 2006 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-01-19 05:10:58,157 INFO L242 Difference]: Finished difference. Result has 221 places, 225 transitions, 1356 flow [2022-01-19 05:10:58,157 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1356, PETRI_PLACES=221, PETRI_TRANSITIONS=225} [2022-01-19 05:10:58,158 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 49 predicate places. [2022-01-19 05:10:58,158 INFO L470 AbstractCegarLoop]: Abstraction has has 221 places, 225 transitions, 1356 flow [2022-01-19 05:10:58,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 92.6875) internal successors, (1483), 16 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:58,159 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:10:58,159 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:10:58,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 05:10:58,159 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:10:58,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:10:58,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1884793419, now seen corresponding path program 4 times [2022-01-19 05:10:58,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:10:58,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572502031] [2022-01-19 05:10:58,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:10:58,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:10:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:10:58,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:10:58,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:10:58,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572502031] [2022-01-19 05:10:58,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572502031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:10:58,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:10:58,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-19 05:10:58,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925327554] [2022-01-19 05:10:58,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:10:58,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 05:10:58,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:10:58,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 05:10:58,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2022-01-19 05:10:58,783 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:10:58,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 225 transitions, 1356 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:10:58,785 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:10:58,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:10:58,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:11:00,354 INFO L129 PetriNetUnfolder]: 1594/4539 cut-off events. [2022-01-19 05:11:00,354 INFO L130 PetriNetUnfolder]: For 10181/10193 co-relation queries the response was YES. [2022-01-19 05:11:00,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14153 conditions, 4539 events. 1594/4539 cut-off events. For 10181/10193 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 38176 event pairs, 655 based on Foata normal form. 14/4444 useless extension candidates. Maximal degree in co-relation 14118. Up to 1255 conditions per place. [2022-01-19 05:11:00,386 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 252 selfloop transitions, 100 changer transitions 0/415 dead transitions. [2022-01-19 05:11:00,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 415 transitions, 3554 flow [2022-01-19 05:11:00,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 05:11:00,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 05:11:00,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2002 transitions. [2022-01-19 05:11:00,390 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5125448028673835 [2022-01-19 05:11:00,390 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2002 transitions. [2022-01-19 05:11:00,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2002 transitions. [2022-01-19 05:11:00,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:11:00,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2002 transitions. [2022-01-19 05:11:00,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.33333333333333) internal successors, (2002), 21 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:00,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:00,400 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:00,400 INFO L186 Difference]: Start difference. First operand has 221 places, 225 transitions, 1356 flow. Second operand 21 states and 2002 transitions. [2022-01-19 05:11:00,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 415 transitions, 3554 flow [2022-01-19 05:11:00,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 415 transitions, 3484 flow, removed 16 selfloop flow, removed 8 redundant places. [2022-01-19 05:11:00,433 INFO L242 Difference]: Finished difference. Result has 243 places, 282 transitions, 2229 flow [2022-01-19 05:11:00,433 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1315, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2229, PETRI_PLACES=243, PETRI_TRANSITIONS=282} [2022-01-19 05:11:00,434 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 71 predicate places. [2022-01-19 05:11:00,434 INFO L470 AbstractCegarLoop]: Abstraction has has 243 places, 282 transitions, 2229 flow [2022-01-19 05:11:00,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:00,435 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:11:00,435 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:11:00,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 05:11:00,435 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:11:00,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:11:00,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1787457561, now seen corresponding path program 5 times [2022-01-19 05:11:00,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:11:00,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791741111] [2022-01-19 05:11:00,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:11:00,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:11:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:11:00,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:11:00,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:11:00,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791741111] [2022-01-19 05:11:00,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791741111] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:11:00,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:11:00,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-19 05:11:00,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22920060] [2022-01-19 05:11:00,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:11:00,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-19 05:11:00,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:11:00,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-19 05:11:00,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-01-19 05:11:00,771 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-01-19 05:11:00,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 282 transitions, 2229 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:00,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:11:00,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-01-19 05:11:00,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:11:02,227 INFO L129 PetriNetUnfolder]: 1660/5051 cut-off events. [2022-01-19 05:11:02,228 INFO L130 PetriNetUnfolder]: For 14904/14959 co-relation queries the response was YES. [2022-01-19 05:11:02,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17064 conditions, 5051 events. 1660/5051 cut-off events. For 14904/14959 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 46100 event pairs, 539 based on Foata normal form. 34/4982 useless extension candidates. Maximal degree in co-relation 17019. Up to 1373 conditions per place. [2022-01-19 05:11:02,259 INFO L132 encePairwiseOnDemand]: 163/186 looper letters, 228 selfloop transitions, 115 changer transitions 0/412 dead transitions. [2022-01-19 05:11:02,259 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 412 transitions, 4060 flow [2022-01-19 05:11:02,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 05:11:02,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 05:11:02,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1837 transitions. [2022-01-19 05:11:02,263 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.519807583474816 [2022-01-19 05:11:02,263 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1837 transitions. [2022-01-19 05:11:02,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1837 transitions. [2022-01-19 05:11:02,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:11:02,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1837 transitions. [2022-01-19 05:11:02,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 96.6842105263158) internal successors, (1837), 19 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:02,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:02,271 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:02,271 INFO L186 Difference]: Start difference. First operand has 243 places, 282 transitions, 2229 flow. Second operand 19 states and 1837 transitions. [2022-01-19 05:11:02,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 412 transitions, 4060 flow [2022-01-19 05:11:02,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 412 transitions, 3963 flow, removed 38 selfloop flow, removed 5 redundant places. [2022-01-19 05:11:02,332 INFO L242 Difference]: Finished difference. Result has 265 places, 318 transitions, 3013 flow [2022-01-19 05:11:02,333 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=2167, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3013, PETRI_PLACES=265, PETRI_TRANSITIONS=318} [2022-01-19 05:11:02,333 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 93 predicate places. [2022-01-19 05:11:02,333 INFO L470 AbstractCegarLoop]: Abstraction has has 265 places, 318 transitions, 3013 flow [2022-01-19 05:11:02,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:02,334 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:11:02,334 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:11:02,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 05:11:02,334 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:11:02,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:11:02,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1670441307, now seen corresponding path program 6 times [2022-01-19 05:11:02,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:11:02,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333244508] [2022-01-19 05:11:02,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:11:02,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:11:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:11:02,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:11:02,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:11:02,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333244508] [2022-01-19 05:11:02,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333244508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:11:02,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:11:02,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-19 05:11:02,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554800543] [2022-01-19 05:11:02,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:11:02,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-19 05:11:02,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:11:02,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-19 05:11:02,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-01-19 05:11:02,701 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-01-19 05:11:02,702 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 318 transitions, 3013 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:02,702 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:11:02,702 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-01-19 05:11:02,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:11:03,953 INFO L129 PetriNetUnfolder]: 1666/5263 cut-off events. [2022-01-19 05:11:03,953 INFO L130 PetriNetUnfolder]: For 20345/20382 co-relation queries the response was YES. [2022-01-19 05:11:03,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18534 conditions, 5263 events. 1666/5263 cut-off events. For 20345/20382 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 48321 event pairs, 820 based on Foata normal form. 28/5177 useless extension candidates. Maximal degree in co-relation 18479. Up to 2082 conditions per place. [2022-01-19 05:11:03,989 INFO L132 encePairwiseOnDemand]: 164/186 looper letters, 199 selfloop transitions, 148 changer transitions 0/416 dead transitions. [2022-01-19 05:11:03,989 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 416 transitions, 4594 flow [2022-01-19 05:11:03,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 05:11:03,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 05:11:03,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1728 transitions. [2022-01-19 05:11:03,993 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2022-01-19 05:11:03,993 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1728 transitions. [2022-01-19 05:11:03,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1728 transitions. [2022-01-19 05:11:03,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:11:03,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1728 transitions. [2022-01-19 05:11:03,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 96.0) internal successors, (1728), 18 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:04,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:04,000 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:04,001 INFO L186 Difference]: Start difference. First operand has 265 places, 318 transitions, 3013 flow. Second operand 18 states and 1728 transitions. [2022-01-19 05:11:04,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 416 transitions, 4594 flow [2022-01-19 05:11:04,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 416 transitions, 4529 flow, removed 24 selfloop flow, removed 5 redundant places. [2022-01-19 05:11:04,083 INFO L242 Difference]: Finished difference. Result has 287 places, 355 transitions, 3906 flow [2022-01-19 05:11:04,084 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=2949, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3906, PETRI_PLACES=287, PETRI_TRANSITIONS=355} [2022-01-19 05:11:04,084 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 115 predicate places. [2022-01-19 05:11:04,085 INFO L470 AbstractCegarLoop]: Abstraction has has 287 places, 355 transitions, 3906 flow [2022-01-19 05:11:04,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:04,085 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:11:04,085 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:11:04,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 05:11:04,086 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:11:04,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:11:04,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1183025351, now seen corresponding path program 7 times [2022-01-19 05:11:04,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:11:04,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107124808] [2022-01-19 05:11:04,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:11:04,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:11:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:11:04,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:11:04,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:11:04,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107124808] [2022-01-19 05:11:04,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107124808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:11:04,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:11:04,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-19 05:11:04,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266588952] [2022-01-19 05:11:04,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:11:04,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 05:11:04,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:11:04,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 05:11:04,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-01-19 05:11:04,597 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:11:04,598 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 355 transitions, 3906 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:04,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:11:04,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:11:04,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:11:07,019 INFO L129 PetriNetUnfolder]: 2442/7208 cut-off events. [2022-01-19 05:11:07,020 INFO L130 PetriNetUnfolder]: For 33008/33085 co-relation queries the response was YES. [2022-01-19 05:11:07,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26693 conditions, 7208 events. 2442/7208 cut-off events. For 33008/33085 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 70178 event pairs, 593 based on Foata normal form. 42/7124 useless extension candidates. Maximal degree in co-relation 26627. Up to 2640 conditions per place. [2022-01-19 05:11:07,078 INFO L132 encePairwiseOnDemand]: 159/186 looper letters, 293 selfloop transitions, 159 changer transitions 0/515 dead transitions. [2022-01-19 05:11:07,078 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 515 transitions, 6489 flow [2022-01-19 05:11:07,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 05:11:07,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 05:11:07,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2072 transitions. [2022-01-19 05:11:07,082 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5063538611925709 [2022-01-19 05:11:07,082 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2072 transitions. [2022-01-19 05:11:07,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2072 transitions. [2022-01-19 05:11:07,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:11:07,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2072 transitions. [2022-01-19 05:11:07,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 94.18181818181819) internal successors, (2072), 22 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:07,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 186.0) internal successors, (4278), 23 states have internal predecessors, (4278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:07,091 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 186.0) internal successors, (4278), 23 states have internal predecessors, (4278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:07,091 INFO L186 Difference]: Start difference. First operand has 287 places, 355 transitions, 3906 flow. Second operand 22 states and 2072 transitions. [2022-01-19 05:11:07,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 515 transitions, 6489 flow [2022-01-19 05:11:07,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 515 transitions, 6392 flow, removed 42 selfloop flow, removed 5 redundant places. [2022-01-19 05:11:07,268 INFO L242 Difference]: Finished difference. Result has 314 places, 411 transitions, 5229 flow [2022-01-19 05:11:07,269 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=3835, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=5229, PETRI_PLACES=314, PETRI_TRANSITIONS=411} [2022-01-19 05:11:07,270 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 142 predicate places. [2022-01-19 05:11:07,270 INFO L470 AbstractCegarLoop]: Abstraction has has 314 places, 411 transitions, 5229 flow [2022-01-19 05:11:07,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:07,271 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:11:07,271 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:11:07,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 05:11:07,272 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:11:07,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:11:07,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1292341893, now seen corresponding path program 8 times [2022-01-19 05:11:07,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:11:07,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686503835] [2022-01-19 05:11:07,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:11:07,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:11:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:11:07,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:11:07,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:11:07,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686503835] [2022-01-19 05:11:07,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686503835] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:11:07,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:11:07,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-19 05:11:07,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610967672] [2022-01-19 05:11:07,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:11:07,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-19 05:11:07,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:11:07,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-19 05:11:07,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-01-19 05:11:07,686 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-01-19 05:11:07,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 411 transitions, 5229 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:07,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:11:07,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-01-19 05:11:07,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:11:09,556 INFO L129 PetriNetUnfolder]: 2070/6882 cut-off events. [2022-01-19 05:11:09,556 INFO L130 PetriNetUnfolder]: For 43655/43952 co-relation queries the response was YES. [2022-01-19 05:11:09,590 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26672 conditions, 6882 events. 2070/6882 cut-off events. For 43655/43952 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 69662 event pairs, 436 based on Foata normal form. 228/6973 useless extension candidates. Maximal degree in co-relation 26596. Up to 1458 conditions per place. [2022-01-19 05:11:09,612 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 340 selfloop transitions, 217 changer transitions 0/629 dead transitions. [2022-01-19 05:11:09,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 629 transitions, 9250 flow [2022-01-19 05:11:09,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 05:11:09,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 05:11:09,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1844 transitions. [2022-01-19 05:11:09,615 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5217883418222977 [2022-01-19 05:11:09,615 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1844 transitions. [2022-01-19 05:11:09,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1844 transitions. [2022-01-19 05:11:09,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:11:09,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1844 transitions. [2022-01-19 05:11:09,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 97.05263157894737) internal successors, (1844), 19 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:09,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:09,622 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:09,622 INFO L186 Difference]: Start difference. First operand has 314 places, 411 transitions, 5229 flow. Second operand 19 states and 1844 transitions. [2022-01-19 05:11:09,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 629 transitions, 9250 flow [2022-01-19 05:11:09,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 629 transitions, 9130 flow, removed 47 selfloop flow, removed 7 redundant places. [2022-01-19 05:11:09,830 INFO L242 Difference]: Finished difference. Result has 333 places, 489 transitions, 7337 flow [2022-01-19 05:11:09,830 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=5147, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=7337, PETRI_PLACES=333, PETRI_TRANSITIONS=489} [2022-01-19 05:11:09,831 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 161 predicate places. [2022-01-19 05:11:09,831 INFO L470 AbstractCegarLoop]: Abstraction has has 333 places, 489 transitions, 7337 flow [2022-01-19 05:11:09,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:09,832 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:11:09,832 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:11:09,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 05:11:09,832 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:11:09,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:11:09,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1492816495, now seen corresponding path program 9 times [2022-01-19 05:11:09,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:11:09,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80444728] [2022-01-19 05:11:09,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:11:09,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:11:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:11:10,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:11:10,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:11:10,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80444728] [2022-01-19 05:11:10,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80444728] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:11:10,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:11:10,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:11:10,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143117427] [2022-01-19 05:11:10,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:11:10,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:11:10,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:11:10,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:11:10,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:11:10,317 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:11:10,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 489 transitions, 7337 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:10,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:11:10,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:11:10,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:11:13,797 INFO L129 PetriNetUnfolder]: 3950/12168 cut-off events. [2022-01-19 05:11:13,798 INFO L130 PetriNetUnfolder]: For 83862/83899 co-relation queries the response was YES. [2022-01-19 05:11:13,873 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50032 conditions, 12168 events. 3950/12168 cut-off events. For 83862/83899 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 133655 event pairs, 1824 based on Foata normal form. 30/11944 useless extension candidates. Maximal degree in co-relation 49947. Up to 3768 conditions per place. [2022-01-19 05:11:13,905 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 441 selfloop transitions, 234 changer transitions 0/738 dead transitions. [2022-01-19 05:11:13,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 738 transitions, 12185 flow [2022-01-19 05:11:13,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 05:11:13,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 05:11:13,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1817 transitions. [2022-01-19 05:11:13,908 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5141482739105829 [2022-01-19 05:11:13,908 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1817 transitions. [2022-01-19 05:11:13,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1817 transitions. [2022-01-19 05:11:13,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:11:13,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1817 transitions. [2022-01-19 05:11:13,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 95.63157894736842) internal successors, (1817), 19 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:13,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:13,916 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:13,916 INFO L186 Difference]: Start difference. First operand has 333 places, 489 transitions, 7337 flow. Second operand 19 states and 1817 transitions. [2022-01-19 05:11:13,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 738 transitions, 12185 flow [2022-01-19 05:11:14,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 738 transitions, 12047 flow, removed 53 selfloop flow, removed 6 redundant places. [2022-01-19 05:11:14,330 INFO L242 Difference]: Finished difference. Result has 356 places, 572 transitions, 9569 flow [2022-01-19 05:11:14,331 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=7235, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9569, PETRI_PLACES=356, PETRI_TRANSITIONS=572} [2022-01-19 05:11:14,332 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 184 predicate places. [2022-01-19 05:11:14,332 INFO L470 AbstractCegarLoop]: Abstraction has has 356 places, 572 transitions, 9569 flow [2022-01-19 05:11:14,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:14,332 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:11:14,333 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:11:14,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 05:11:14,333 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:11:14,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:11:14,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1398113381, now seen corresponding path program 10 times [2022-01-19 05:11:14,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:11:14,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397315911] [2022-01-19 05:11:14,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:11:14,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:11:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:11:14,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:11:14,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:11:14,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397315911] [2022-01-19 05:11:14,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397315911] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:11:14,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:11:14,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-19 05:11:14,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972162357] [2022-01-19 05:11:14,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:11:14,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 05:11:14,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:11:14,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 05:11:14,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-01-19 05:11:14,954 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:11:14,955 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 572 transitions, 9569 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:14,955 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:11:14,955 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:11:14,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:11:19,394 INFO L129 PetriNetUnfolder]: 4228/12861 cut-off events. [2022-01-19 05:11:19,394 INFO L130 PetriNetUnfolder]: For 101127/101173 co-relation queries the response was YES. [2022-01-19 05:11:19,471 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55569 conditions, 12861 events. 4228/12861 cut-off events. For 101127/101173 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 143331 event pairs, 802 based on Foata normal form. 34/12572 useless extension candidates. Maximal degree in co-relation 55473. Up to 3680 conditions per place. [2022-01-19 05:11:19,498 INFO L132 encePairwiseOnDemand]: 159/186 looper letters, 407 selfloop transitions, 329 changer transitions 0/799 dead transitions. [2022-01-19 05:11:19,499 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 799 transitions, 14075 flow [2022-01-19 05:11:19,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-19 05:11:19,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-19 05:11:19,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2449 transitions. [2022-01-19 05:11:19,502 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5064102564102564 [2022-01-19 05:11:19,502 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2449 transitions. [2022-01-19 05:11:19,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2449 transitions. [2022-01-19 05:11:19,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:11:19,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2449 transitions. [2022-01-19 05:11:19,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 94.1923076923077) internal successors, (2449), 26 states have internal predecessors, (2449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:19,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:19,511 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:19,511 INFO L186 Difference]: Start difference. First operand has 356 places, 572 transitions, 9569 flow. Second operand 26 states and 2449 transitions. [2022-01-19 05:11:19,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 799 transitions, 14075 flow [2022-01-19 05:11:19,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 799 transitions, 13919 flow, removed 66 selfloop flow, removed 5 redundant places. [2022-01-19 05:11:19,950 INFO L242 Difference]: Finished difference. Result has 388 places, 652 transitions, 12201 flow [2022-01-19 05:11:19,952 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=9432, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=12201, PETRI_PLACES=388, PETRI_TRANSITIONS=652} [2022-01-19 05:11:19,952 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 216 predicate places. [2022-01-19 05:11:19,952 INFO L470 AbstractCegarLoop]: Abstraction has has 388 places, 652 transitions, 12201 flow [2022-01-19 05:11:19,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:19,953 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:11:19,953 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:11:19,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 05:11:19,953 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:11:19,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:11:19,954 INFO L85 PathProgramCache]: Analyzing trace with hash -471460169, now seen corresponding path program 11 times [2022-01-19 05:11:19,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:11:19,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067704668] [2022-01-19 05:11:19,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:11:19,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:11:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:11:20,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:11:20,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:11:20,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067704668] [2022-01-19 05:11:20,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067704668] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:11:20,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:11:20,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:11:20,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936497882] [2022-01-19 05:11:20,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:11:20,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:11:20,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:11:20,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:11:20,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:11:20,517 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:11:20,518 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 652 transitions, 12201 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:20,518 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:11:20,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:11:20,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:11:25,086 INFO L129 PetriNetUnfolder]: 4613/14354 cut-off events. [2022-01-19 05:11:25,086 INFO L130 PetriNetUnfolder]: For 138176/138240 co-relation queries the response was YES. [2022-01-19 05:11:25,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65302 conditions, 14354 events. 4613/14354 cut-off events. For 138176/138240 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 164419 event pairs, 1921 based on Foata normal form. 39/14074 useless extension candidates. Maximal degree in co-relation 65194. Up to 4590 conditions per place. [2022-01-19 05:11:25,226 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 495 selfloop transitions, 291 changer transitions 0/849 dead transitions. [2022-01-19 05:11:25,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 849 transitions, 16853 flow [2022-01-19 05:11:25,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 05:11:25,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 05:11:25,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1810 transitions. [2022-01-19 05:11:25,229 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5121675155631012 [2022-01-19 05:11:25,229 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1810 transitions. [2022-01-19 05:11:25,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1810 transitions. [2022-01-19 05:11:25,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:11:25,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1810 transitions. [2022-01-19 05:11:25,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 95.26315789473684) internal successors, (1810), 19 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:25,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:25,242 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:25,243 INFO L186 Difference]: Start difference. First operand has 388 places, 652 transitions, 12201 flow. Second operand 19 states and 1810 transitions. [2022-01-19 05:11:25,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 849 transitions, 16853 flow [2022-01-19 05:11:25,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 849 transitions, 16727 flow, removed 47 selfloop flow, removed 6 redundant places. [2022-01-19 05:11:25,900 INFO L242 Difference]: Finished difference. Result has 411 places, 719 transitions, 14611 flow [2022-01-19 05:11:25,901 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=12079, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=14611, PETRI_PLACES=411, PETRI_TRANSITIONS=719} [2022-01-19 05:11:25,901 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 239 predicate places. [2022-01-19 05:11:25,901 INFO L470 AbstractCegarLoop]: Abstraction has has 411 places, 719 transitions, 14611 flow [2022-01-19 05:11:25,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:25,902 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:11:25,902 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:11:25,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 05:11:25,902 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:11:25,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:11:25,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1773522165, now seen corresponding path program 12 times [2022-01-19 05:11:25,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:11:25,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798364911] [2022-01-19 05:11:25,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:11:25,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:11:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:11:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:11:26,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:11:26,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798364911] [2022-01-19 05:11:26,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798364911] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:11:26,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:11:26,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-19 05:11:26,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518135781] [2022-01-19 05:11:26,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:11:26,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 05:11:26,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:11:26,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 05:11:26,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-01-19 05:11:26,377 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:11:26,378 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 719 transitions, 14611 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:26,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:11:26,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:11:26,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:11:31,246 INFO L129 PetriNetUnfolder]: 4611/14517 cut-off events. [2022-01-19 05:11:31,246 INFO L130 PetriNetUnfolder]: For 163056/163056 co-relation queries the response was YES. [2022-01-19 05:11:31,463 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67839 conditions, 14517 events. 4611/14517 cut-off events. For 163056/163056 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 164587 event pairs, 2697 based on Foata normal form. 1/14151 useless extension candidates. Maximal degree in co-relation 67720. Up to 6356 conditions per place. [2022-01-19 05:11:31,502 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 426 selfloop transitions, 357 changer transitions 0/846 dead transitions. [2022-01-19 05:11:31,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 846 transitions, 17999 flow [2022-01-19 05:11:31,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-19 05:11:31,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-01-19 05:11:31,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2321 transitions. [2022-01-19 05:11:31,506 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.49913978494623656 [2022-01-19 05:11:31,506 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2321 transitions. [2022-01-19 05:11:31,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2321 transitions. [2022-01-19 05:11:31,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:11:31,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2321 transitions. [2022-01-19 05:11:31,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 92.84) internal successors, (2321), 25 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:31,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 186.0) internal successors, (4836), 26 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:31,512 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 186.0) internal successors, (4836), 26 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:31,512 INFO L186 Difference]: Start difference. First operand has 411 places, 719 transitions, 14611 flow. Second operand 25 states and 2321 transitions. [2022-01-19 05:11:31,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 846 transitions, 17999 flow [2022-01-19 05:11:32,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 846 transitions, 17719 flow, removed 130 selfloop flow, removed 5 redundant places. [2022-01-19 05:11:32,292 INFO L242 Difference]: Finished difference. Result has 441 places, 749 transitions, 16058 flow [2022-01-19 05:11:32,292 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=14364, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=16058, PETRI_PLACES=441, PETRI_TRANSITIONS=749} [2022-01-19 05:11:32,293 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 269 predicate places. [2022-01-19 05:11:32,293 INFO L470 AbstractCegarLoop]: Abstraction has has 441 places, 749 transitions, 16058 flow [2022-01-19 05:11:32,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:32,294 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:11:32,294 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:11:32,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 05:11:32,294 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:11:32,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:11:32,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1537155545, now seen corresponding path program 13 times [2022-01-19 05:11:32,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:11:32,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128330198] [2022-01-19 05:11:32,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:11:32,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:11:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:11:32,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:11:32,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:11:32,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128330198] [2022-01-19 05:11:32,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128330198] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:11:32,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:11:32,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:11:32,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101867194] [2022-01-19 05:11:32,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:11:32,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:11:32,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:11:32,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:11:32,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:11:32,762 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:11:32,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 749 transitions, 16058 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:32,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:11:32,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:11:32,764 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:11:37,928 INFO L129 PetriNetUnfolder]: 4623/14607 cut-off events. [2022-01-19 05:11:37,928 INFO L130 PetriNetUnfolder]: For 173985/174106 co-relation queries the response was YES. [2022-01-19 05:11:38,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69515 conditions, 14607 events. 4623/14607 cut-off events. For 173985/174106 co-relation queries the response was YES. Maximal size of possible extension queue 867. Compared 167976 event pairs, 2126 based on Foata normal form. 51/14350 useless extension candidates. Maximal degree in co-relation 69384. Up to 4590 conditions per place. [2022-01-19 05:11:38,126 INFO L132 encePairwiseOnDemand]: 160/186 looper letters, 585 selfloop transitions, 314 changer transitions 0/962 dead transitions. [2022-01-19 05:11:38,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 962 transitions, 21322 flow [2022-01-19 05:11:38,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 05:11:38,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 05:11:38,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1823 transitions. [2022-01-19 05:11:38,129 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5158460667798529 [2022-01-19 05:11:38,129 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1823 transitions. [2022-01-19 05:11:38,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1823 transitions. [2022-01-19 05:11:38,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:11:38,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1823 transitions. [2022-01-19 05:11:38,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 95.94736842105263) internal successors, (1823), 19 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:38,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:38,135 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:38,135 INFO L186 Difference]: Start difference. First operand has 441 places, 749 transitions, 16058 flow. Second operand 19 states and 1823 transitions. [2022-01-19 05:11:38,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 962 transitions, 21322 flow [2022-01-19 05:11:39,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 962 transitions, 20888 flow, removed 117 selfloop flow, removed 8 redundant places. [2022-01-19 05:11:39,084 INFO L242 Difference]: Finished difference. Result has 461 places, 810 transitions, 18193 flow [2022-01-19 05:11:39,085 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=15650, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=18193, PETRI_PLACES=461, PETRI_TRANSITIONS=810} [2022-01-19 05:11:39,085 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 289 predicate places. [2022-01-19 05:11:39,086 INFO L470 AbstractCegarLoop]: Abstraction has has 461 places, 810 transitions, 18193 flow [2022-01-19 05:11:39,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:39,086 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:11:39,086 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:11:39,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-19 05:11:39,086 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:11:39,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:11:39,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1184486327, now seen corresponding path program 14 times [2022-01-19 05:11:39,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:11:39,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146114735] [2022-01-19 05:11:39,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:11:39,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:11:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:11:39,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:11:39,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:11:39,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146114735] [2022-01-19 05:11:39,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146114735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:11:39,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:11:39,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:11:39,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587467719] [2022-01-19 05:11:39,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:11:39,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:11:39,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:11:39,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:11:39,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:11:39,538 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:11:39,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 810 transitions, 18193 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:39,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:11:39,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:11:39,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:11:44,904 INFO L129 PetriNetUnfolder]: 4620/14575 cut-off events. [2022-01-19 05:11:44,905 INFO L130 PetriNetUnfolder]: For 187825/187945 co-relation queries the response was YES. [2022-01-19 05:11:45,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71488 conditions, 14575 events. 4620/14575 cut-off events. For 187825/187945 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 167437 event pairs, 1563 based on Foata normal form. 49/14317 useless extension candidates. Maximal degree in co-relation 71348. Up to 6695 conditions per place. [2022-01-19 05:11:45,059 INFO L132 encePairwiseOnDemand]: 160/186 looper letters, 516 selfloop transitions, 379 changer transitions 0/958 dead transitions. [2022-01-19 05:11:45,059 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 958 transitions, 22110 flow [2022-01-19 05:11:45,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 05:11:45,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 05:11:45,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1906 transitions. [2022-01-19 05:11:45,061 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5123655913978494 [2022-01-19 05:11:45,061 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1906 transitions. [2022-01-19 05:11:45,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1906 transitions. [2022-01-19 05:11:45,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:11:45,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1906 transitions. [2022-01-19 05:11:45,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 95.3) internal successors, (1906), 20 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:45,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:45,066 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:45,066 INFO L186 Difference]: Start difference. First operand has 461 places, 810 transitions, 18193 flow. Second operand 20 states and 1906 transitions. [2022-01-19 05:11:45,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 958 transitions, 22110 flow [2022-01-19 05:11:46,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 958 transitions, 21806 flow, removed 142 selfloop flow, removed 5 redundant places. [2022-01-19 05:11:46,179 INFO L242 Difference]: Finished difference. Result has 483 places, 846 transitions, 20042 flow [2022-01-19 05:11:46,179 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=17889, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=343, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=20042, PETRI_PLACES=483, PETRI_TRANSITIONS=846} [2022-01-19 05:11:46,180 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 311 predicate places. [2022-01-19 05:11:46,180 INFO L470 AbstractCegarLoop]: Abstraction has has 483 places, 846 transitions, 20042 flow [2022-01-19 05:11:46,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:46,180 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:11:46,180 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:11:46,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 05:11:46,180 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:11:46,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:11:46,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1750309019, now seen corresponding path program 15 times [2022-01-19 05:11:46,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:11:46,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012075663] [2022-01-19 05:11:46,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:11:46,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:11:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:11:46,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:11:46,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:11:46,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012075663] [2022-01-19 05:11:46,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012075663] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:11:46,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:11:46,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-19 05:11:46,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135740938] [2022-01-19 05:11:46,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:11:46,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-19 05:11:46,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:11:46,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-19 05:11:46,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2022-01-19 05:11:46,879 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 186 [2022-01-19 05:11:46,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 846 transitions, 20042 flow. Second operand has 22 states, 22 states have (on average 88.81818181818181) internal successors, (1954), 22 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:46,881 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:11:46,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 186 [2022-01-19 05:11:46,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:11:53,391 INFO L129 PetriNetUnfolder]: 4620/14689 cut-off events. [2022-01-19 05:11:53,391 INFO L130 PetriNetUnfolder]: For 206334/206436 co-relation queries the response was YES. [2022-01-19 05:11:53,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73562 conditions, 14689 events. 4620/14689 cut-off events. For 206334/206436 co-relation queries the response was YES. Maximal size of possible extension queue 894. Compared 170367 event pairs, 793 based on Foata normal form. 40/14368 useless extension candidates. Maximal degree in co-relation 73414. Up to 3775 conditions per place. [2022-01-19 05:11:53,555 INFO L132 encePairwiseOnDemand]: 158/186 looper letters, 523 selfloop transitions, 454 changer transitions 0/1039 dead transitions. [2022-01-19 05:11:53,556 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 1039 transitions, 24991 flow [2022-01-19 05:11:53,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-19 05:11:53,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-01-19 05:11:53,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2849 transitions. [2022-01-19 05:11:53,558 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4941033645508151 [2022-01-19 05:11:53,558 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2849 transitions. [2022-01-19 05:11:53,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2849 transitions. [2022-01-19 05:11:53,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:11:53,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2849 transitions. [2022-01-19 05:11:53,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 91.90322580645162) internal successors, (2849), 31 states have internal predecessors, (2849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:53,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 186.0) internal successors, (5952), 32 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:53,566 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 186.0) internal successors, (5952), 32 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:53,566 INFO L186 Difference]: Start difference. First operand has 483 places, 846 transitions, 20042 flow. Second operand 31 states and 2849 transitions. [2022-01-19 05:11:53,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 1039 transitions, 24991 flow [2022-01-19 05:11:54,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 1039 transitions, 24706 flow, removed 66 selfloop flow, removed 8 redundant places. [2022-01-19 05:11:54,841 INFO L242 Difference]: Finished difference. Result has 516 places, 891 transitions, 22386 flow [2022-01-19 05:11:54,842 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=19769, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=846, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=409, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=22386, PETRI_PLACES=516, PETRI_TRANSITIONS=891} [2022-01-19 05:11:54,842 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 344 predicate places. [2022-01-19 05:11:54,842 INFO L470 AbstractCegarLoop]: Abstraction has has 516 places, 891 transitions, 22386 flow [2022-01-19 05:11:54,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 88.81818181818181) internal successors, (1954), 22 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:54,842 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:11:54,843 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:11:54,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-19 05:11:54,843 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:11:54,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:11:54,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1104033109, now seen corresponding path program 16 times [2022-01-19 05:11:54,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:11:54,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636282529] [2022-01-19 05:11:54,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:11:54,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:11:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:11:55,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:11:55,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:11:55,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636282529] [2022-01-19 05:11:55,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636282529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:11:55,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:11:55,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-19 05:11:55,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196534658] [2022-01-19 05:11:55,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:11:55,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 05:11:55,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:11:55,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 05:11:55,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-01-19 05:11:55,343 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:11:55,344 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 891 transitions, 22386 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:11:55,344 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:11:55,344 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:11:55,344 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:12:01,765 INFO L129 PetriNetUnfolder]: 4617/14650 cut-off events. [2022-01-19 05:12:01,765 INFO L130 PetriNetUnfolder]: For 239370/239454 co-relation queries the response was YES. [2022-01-19 05:12:01,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78051 conditions, 14650 events. 4617/14650 cut-off events. For 239370/239454 co-relation queries the response was YES. Maximal size of possible extension queue 885. Compared 168933 event pairs, 774 based on Foata normal form. 33/14328 useless extension candidates. Maximal degree in co-relation 77891. Up to 3156 conditions per place. [2022-01-19 05:12:01,996 INFO L132 encePairwiseOnDemand]: 157/186 looper letters, 545 selfloop transitions, 514 changer transitions 0/1122 dead transitions. [2022-01-19 05:12:01,996 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 1122 transitions, 27803 flow [2022-01-19 05:12:01,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 05:12:01,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 05:12:01,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3457 transitions. [2022-01-19 05:12:02,000 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.502324905550712 [2022-01-19 05:12:02,000 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3457 transitions. [2022-01-19 05:12:02,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3457 transitions. [2022-01-19 05:12:02,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:12:02,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3457 transitions. [2022-01-19 05:12:02,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 93.43243243243244) internal successors, (3457), 37 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:02,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 186.0) internal successors, (7068), 38 states have internal predecessors, (7068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:02,009 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 186.0) internal successors, (7068), 38 states have internal predecessors, (7068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:02,009 INFO L186 Difference]: Start difference. First operand has 516 places, 891 transitions, 22386 flow. Second operand 37 states and 3457 transitions. [2022-01-19 05:12:02,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 1122 transitions, 27803 flow [2022-01-19 05:12:03,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 1122 transitions, 27355 flow, removed 177 selfloop flow, removed 11 redundant places. [2022-01-19 05:12:03,585 INFO L242 Difference]: Finished difference. Result has 553 places, 948 transitions, 25070 flow [2022-01-19 05:12:03,586 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=22040, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=891, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=460, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=25070, PETRI_PLACES=553, PETRI_TRANSITIONS=948} [2022-01-19 05:12:03,587 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 381 predicate places. [2022-01-19 05:12:03,587 INFO L470 AbstractCegarLoop]: Abstraction has has 553 places, 948 transitions, 25070 flow [2022-01-19 05:12:03,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:03,588 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:12:03,588 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:12:03,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 05:12:03,588 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:12:03,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:12:03,589 INFO L85 PathProgramCache]: Analyzing trace with hash -213076963, now seen corresponding path program 17 times [2022-01-19 05:12:03,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:12:03,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281399419] [2022-01-19 05:12:03,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:12:03,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:12:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:12:04,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:12:04,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:12:04,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281399419] [2022-01-19 05:12:04,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281399419] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:12:04,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:12:04,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-19 05:12:04,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384624287] [2022-01-19 05:12:04,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:12:04,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 05:12:04,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:12:04,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 05:12:04,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-01-19 05:12:04,062 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:12:04,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 948 transitions, 25070 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:04,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:12:04,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:12:04,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:12:10,634 INFO L129 PetriNetUnfolder]: 4617/14766 cut-off events. [2022-01-19 05:12:10,635 INFO L130 PetriNetUnfolder]: For 267699/267783 co-relation queries the response was YES. [2022-01-19 05:12:10,851 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81503 conditions, 14766 events. 4617/14766 cut-off events. For 267699/267783 co-relation queries the response was YES. Maximal size of possible extension queue 881. Compared 171010 event pairs, 885 based on Foata normal form. 33/14439 useless extension candidates. Maximal degree in co-relation 81332. Up to 3156 conditions per place. [2022-01-19 05:12:10,902 INFO L132 encePairwiseOnDemand]: 157/186 looper letters, 561 selfloop transitions, 543 changer transitions 0/1167 dead transitions. [2022-01-19 05:12:10,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 1167 transitions, 30401 flow [2022-01-19 05:12:10,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 05:12:10,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 05:12:10,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2725 transitions. [2022-01-19 05:12:10,905 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5051909529106414 [2022-01-19 05:12:10,905 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2725 transitions. [2022-01-19 05:12:10,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2725 transitions. [2022-01-19 05:12:10,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:12:10,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2725 transitions. [2022-01-19 05:12:10,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 93.96551724137932) internal successors, (2725), 29 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:10,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 186.0) internal successors, (5580), 30 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:10,912 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 186.0) internal successors, (5580), 30 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:10,912 INFO L186 Difference]: Start difference. First operand has 553 places, 948 transitions, 25070 flow. Second operand 29 states and 2725 transitions. [2022-01-19 05:12:10,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 1167 transitions, 30401 flow [2022-01-19 05:12:13,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 1167 transitions, 29958 flow, removed 134 selfloop flow, removed 11 redundant places. [2022-01-19 05:12:13,053 INFO L242 Difference]: Finished difference. Result has 579 places, 976 transitions, 26892 flow [2022-01-19 05:12:13,054 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=24659, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=948, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=517, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=26892, PETRI_PLACES=579, PETRI_TRANSITIONS=976} [2022-01-19 05:12:13,054 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 407 predicate places. [2022-01-19 05:12:13,054 INFO L470 AbstractCegarLoop]: Abstraction has has 579 places, 976 transitions, 26892 flow [2022-01-19 05:12:13,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:13,055 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:12:13,055 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:12:13,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-19 05:12:13,055 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:12:13,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:12:13,056 INFO L85 PathProgramCache]: Analyzing trace with hash -510603675, now seen corresponding path program 18 times [2022-01-19 05:12:13,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:12:13,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782738915] [2022-01-19 05:12:13,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:12:13,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:12:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:12:13,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:12:13,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:12:13,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782738915] [2022-01-19 05:12:13,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782738915] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:12:13,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:12:13,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-19 05:12:13,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796695192] [2022-01-19 05:12:13,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:12:13,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 05:12:13,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:12:13,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 05:12:13,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-01-19 05:12:13,523 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:12:13,524 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 976 transitions, 26892 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:13,524 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:12:13,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:12:13,524 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:12:20,345 INFO L129 PetriNetUnfolder]: 4614/14895 cut-off events. [2022-01-19 05:12:20,345 INFO L130 PetriNetUnfolder]: For 296732/296816 co-relation queries the response was YES. [2022-01-19 05:12:20,534 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84555 conditions, 14895 events. 4614/14895 cut-off events. For 296732/296816 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 172774 event pairs, 2092 based on Foata normal form. 33/14613 useless extension candidates. Maximal degree in co-relation 84375. Up to 4590 conditions per place. [2022-01-19 05:12:20,574 INFO L132 encePairwiseOnDemand]: 159/186 looper letters, 700 selfloop transitions, 389 changer transitions 0/1152 dead transitions. [2022-01-19 05:12:20,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 1152 transitions, 32125 flow [2022-01-19 05:12:20,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-19 05:12:20,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-01-19 05:12:20,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2179 transitions. [2022-01-19 05:12:20,576 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5093501636278635 [2022-01-19 05:12:20,576 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2179 transitions. [2022-01-19 05:12:20,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2179 transitions. [2022-01-19 05:12:20,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:12:20,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2179 transitions. [2022-01-19 05:12:20,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 94.73913043478261) internal successors, (2179), 23 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:20,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 186.0) internal successors, (4464), 24 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:20,582 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 186.0) internal successors, (4464), 24 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:20,582 INFO L186 Difference]: Start difference. First operand has 579 places, 976 transitions, 26892 flow. Second operand 23 states and 2179 transitions. [2022-01-19 05:12:20,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 1152 transitions, 32125 flow [2022-01-19 05:12:22,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 1152 transitions, 31173 flow, removed 118 selfloop flow, removed 13 redundant places. [2022-01-19 05:12:22,547 INFO L242 Difference]: Finished difference. Result has 597 places, 1007 transitions, 28251 flow [2022-01-19 05:12:22,548 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=26023, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=976, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=358, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=28251, PETRI_PLACES=597, PETRI_TRANSITIONS=1007} [2022-01-19 05:12:22,548 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 425 predicate places. [2022-01-19 05:12:22,548 INFO L470 AbstractCegarLoop]: Abstraction has has 597 places, 1007 transitions, 28251 flow [2022-01-19 05:12:22,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:22,549 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:12:22,549 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:12:22,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-19 05:12:22,549 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:12:22,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:12:22,549 INFO L85 PathProgramCache]: Analyzing trace with hash -834352183, now seen corresponding path program 19 times [2022-01-19 05:12:22,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:12:22,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653388737] [2022-01-19 05:12:22,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:12:22,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:12:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:12:22,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:12:22,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:12:22,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653388737] [2022-01-19 05:12:22,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653388737] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:12:22,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:12:22,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:12:22,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615263543] [2022-01-19 05:12:22,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:12:22,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:12:22,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:12:22,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:12:22,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:12:22,971 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:12:22,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 1007 transitions, 28251 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:22,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:12:22,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:12:22,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:12:29,754 INFO L129 PetriNetUnfolder]: 4611/14923 cut-off events. [2022-01-19 05:12:29,755 INFO L130 PetriNetUnfolder]: For 299234/299351 co-relation queries the response was YES. [2022-01-19 05:12:29,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83487 conditions, 14923 events. 4611/14923 cut-off events. For 299234/299351 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 173349 event pairs, 1953 based on Foata normal form. 57/14662 useless extension candidates. Maximal degree in co-relation 83302. Up to 4590 conditions per place. [2022-01-19 05:12:29,958 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 696 selfloop transitions, 404 changer transitions 0/1163 dead transitions. [2022-01-19 05:12:29,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 1163 transitions, 33200 flow [2022-01-19 05:12:29,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 05:12:29,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 05:12:29,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1902 transitions. [2022-01-19 05:12:29,960 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5112903225806451 [2022-01-19 05:12:29,960 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1902 transitions. [2022-01-19 05:12:29,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1902 transitions. [2022-01-19 05:12:29,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:12:29,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1902 transitions. [2022-01-19 05:12:29,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 95.1) internal successors, (1902), 20 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:29,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:29,965 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:29,965 INFO L186 Difference]: Start difference. First operand has 597 places, 1007 transitions, 28251 flow. Second operand 20 states and 1902 transitions. [2022-01-19 05:12:29,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 1163 transitions, 33200 flow [2022-01-19 05:12:31,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 1163 transitions, 32848 flow, removed 104 selfloop flow, removed 9 redundant places. [2022-01-19 05:12:32,019 INFO L242 Difference]: Finished difference. Result has 615 places, 1038 transitions, 30206 flow [2022-01-19 05:12:32,019 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=27899, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1007, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=373, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=30206, PETRI_PLACES=615, PETRI_TRANSITIONS=1038} [2022-01-19 05:12:32,020 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 443 predicate places. [2022-01-19 05:12:32,020 INFO L470 AbstractCegarLoop]: Abstraction has has 615 places, 1038 transitions, 30206 flow [2022-01-19 05:12:32,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:32,020 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:12:32,020 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:12:32,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-19 05:12:32,020 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:12:32,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:12:32,021 INFO L85 PathProgramCache]: Analyzing trace with hash 297432779, now seen corresponding path program 20 times [2022-01-19 05:12:32,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:12:32,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017228624] [2022-01-19 05:12:32,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:12:32,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:12:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:12:32,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:12:32,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:12:32,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017228624] [2022-01-19 05:12:32,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017228624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:12:32,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:12:32,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:12:32,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791053578] [2022-01-19 05:12:32,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:12:32,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:12:32,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:12:32,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:12:32,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:12:32,432 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:12:32,433 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 1038 transitions, 30206 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:32,433 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:12:32,433 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:12:32,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:12:39,684 INFO L129 PetriNetUnfolder]: 4608/14990 cut-off events. [2022-01-19 05:12:39,684 INFO L130 PetriNetUnfolder]: For 319549/319663 co-relation queries the response was YES. [2022-01-19 05:12:39,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84910 conditions, 14990 events. 4608/14990 cut-off events. For 319549/319663 co-relation queries the response was YES. Maximal size of possible extension queue 876. Compared 174324 event pairs, 1929 based on Foata normal form. 45/14720 useless extension candidates. Maximal degree in co-relation 84717. Up to 4590 conditions per place. [2022-01-19 05:12:39,919 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 707 selfloop transitions, 410 changer transitions 0/1180 dead transitions. [2022-01-19 05:12:39,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 1180 transitions, 34917 flow [2022-01-19 05:12:39,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 05:12:39,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 05:12:39,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1992 transitions. [2022-01-19 05:12:39,921 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5099846390168971 [2022-01-19 05:12:39,921 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1992 transitions. [2022-01-19 05:12:39,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1992 transitions. [2022-01-19 05:12:39,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:12:39,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1992 transitions. [2022-01-19 05:12:39,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.85714285714286) internal successors, (1992), 21 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:39,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:39,924 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:39,924 INFO L186 Difference]: Start difference. First operand has 615 places, 1038 transitions, 30206 flow. Second operand 21 states and 1992 transitions. [2022-01-19 05:12:39,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 1180 transitions, 34917 flow [2022-01-19 05:12:42,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 627 places, 1180 transitions, 34490 flow, removed 126 selfloop flow, removed 8 redundant places. [2022-01-19 05:12:42,149 INFO L242 Difference]: Finished difference. Result has 637 places, 1069 transitions, 32085 flow [2022-01-19 05:12:42,150 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=29780, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1038, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=379, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=634, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=32085, PETRI_PLACES=637, PETRI_TRANSITIONS=1069} [2022-01-19 05:12:42,150 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 465 predicate places. [2022-01-19 05:12:42,150 INFO L470 AbstractCegarLoop]: Abstraction has has 637 places, 1069 transitions, 32085 flow [2022-01-19 05:12:42,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:42,150 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:12:42,150 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:12:42,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-19 05:12:42,151 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:12:42,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:12:42,151 INFO L85 PathProgramCache]: Analyzing trace with hash 481417007, now seen corresponding path program 21 times [2022-01-19 05:12:42,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:12:42,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496960143] [2022-01-19 05:12:42,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:12:42,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:12:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:12:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:12:42,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:12:42,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496960143] [2022-01-19 05:12:42,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496960143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:12:42,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:12:42,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:12:42,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127361271] [2022-01-19 05:12:42,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:12:42,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:12:42,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:12:42,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:12:42,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:12:42,542 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:12:42,543 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 1069 transitions, 32085 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:42,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:12:42,543 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:12:42,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:12:50,005 INFO L129 PetriNetUnfolder]: 4605/15113 cut-off events. [2022-01-19 05:12:50,006 INFO L130 PetriNetUnfolder]: For 344176/344324 co-relation queries the response was YES. [2022-01-19 05:12:50,189 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86350 conditions, 15113 events. 4605/15113 cut-off events. For 344176/344324 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 176054 event pairs, 2273 based on Foata normal form. 77/14862 useless extension candidates. Maximal degree in co-relation 86147. Up to 4590 conditions per place. [2022-01-19 05:12:50,226 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 761 selfloop transitions, 390 changer transitions 0/1214 dead transitions. [2022-01-19 05:12:50,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 1214 transitions, 36806 flow [2022-01-19 05:12:50,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 05:12:50,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 05:12:50,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2001 transitions. [2022-01-19 05:12:50,228 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5122887864823349 [2022-01-19 05:12:50,228 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2001 transitions. [2022-01-19 05:12:50,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2001 transitions. [2022-01-19 05:12:50,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:12:50,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2001 transitions. [2022-01-19 05:12:50,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.28571428571429) internal successors, (2001), 21 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:50,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:50,233 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:50,233 INFO L186 Difference]: Start difference. First operand has 637 places, 1069 transitions, 32085 flow. Second operand 21 states and 2001 transitions. [2022-01-19 05:12:50,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 1214 transitions, 36806 flow [2022-01-19 05:12:52,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 650 places, 1214 transitions, 36434 flow, removed 127 selfloop flow, removed 7 redundant places. [2022-01-19 05:12:52,856 INFO L242 Difference]: Finished difference. Result has 660 places, 1100 transitions, 34048 flow [2022-01-19 05:12:52,857 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=31714, PETRI_DIFFERENCE_MINUEND_PLACES=630, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1069, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=359, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=685, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=34048, PETRI_PLACES=660, PETRI_TRANSITIONS=1100} [2022-01-19 05:12:52,857 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 488 predicate places. [2022-01-19 05:12:52,857 INFO L470 AbstractCegarLoop]: Abstraction has has 660 places, 1100 transitions, 34048 flow [2022-01-19 05:12:52,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:52,857 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:12:52,858 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:12:52,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-19 05:12:52,858 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:12:52,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:12:52,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1783849327, now seen corresponding path program 22 times [2022-01-19 05:12:52,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:12:52,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440607727] [2022-01-19 05:12:52,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:12:52,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:12:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:12:53,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:12:53,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:12:53,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440607727] [2022-01-19 05:12:53,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440607727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:12:53,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:12:53,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:12:53,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093358292] [2022-01-19 05:12:53,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:12:53,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:12:53,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:12:53,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:12:53,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:12:53,312 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:12:53,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 1100 transitions, 34048 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:12:53,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:12:53,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:12:53,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:13:00,961 INFO L129 PetriNetUnfolder]: 4599/15229 cut-off events. [2022-01-19 05:13:00,961 INFO L130 PetriNetUnfolder]: For 371891/372039 co-relation queries the response was YES. [2022-01-19 05:13:01,150 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88163 conditions, 15229 events. 4599/15229 cut-off events. For 371891/372039 co-relation queries the response was YES. Maximal size of possible extension queue 876. Compared 177814 event pairs, 2186 based on Foata normal form. 77/14977 useless extension candidates. Maximal degree in co-relation 87950. Up to 4590 conditions per place. [2022-01-19 05:13:01,185 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 777 selfloop transitions, 437 changer transitions 0/1277 dead transitions. [2022-01-19 05:13:01,186 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 680 places, 1277 transitions, 40089 flow [2022-01-19 05:13:01,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 05:13:01,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 05:13:01,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1998 transitions. [2022-01-19 05:13:01,188 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.511520737327189 [2022-01-19 05:13:01,188 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1998 transitions. [2022-01-19 05:13:01,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1998 transitions. [2022-01-19 05:13:01,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:13:01,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1998 transitions. [2022-01-19 05:13:01,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.14285714285714) internal successors, (1998), 21 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:01,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:01,193 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:01,193 INFO L186 Difference]: Start difference. First operand has 660 places, 1100 transitions, 34048 flow. Second operand 21 states and 1998 transitions. [2022-01-19 05:13:01,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 680 places, 1277 transitions, 40089 flow [2022-01-19 05:13:03,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 672 places, 1277 transitions, 39444 flow, removed 146 selfloop flow, removed 8 redundant places. [2022-01-19 05:13:03,965 INFO L242 Difference]: Finished difference. Result has 680 places, 1142 transitions, 36243 flow [2022-01-19 05:13:03,966 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=33423, PETRI_DIFFERENCE_MINUEND_PLACES=652, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=401, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=681, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=36243, PETRI_PLACES=680, PETRI_TRANSITIONS=1142} [2022-01-19 05:13:03,967 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 508 predicate places. [2022-01-19 05:13:03,967 INFO L470 AbstractCegarLoop]: Abstraction has has 680 places, 1142 transitions, 36243 flow [2022-01-19 05:13:03,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:03,967 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:13:03,967 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:13:03,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-19 05:13:03,967 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:13:03,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:13:03,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2110898629, now seen corresponding path program 23 times [2022-01-19 05:13:03,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:13:03,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008934450] [2022-01-19 05:13:03,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:13:03,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:13:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:13:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:13:04,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:13:04,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008934450] [2022-01-19 05:13:04,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008934450] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:13:04,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:13:04,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:13:04,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323140560] [2022-01-19 05:13:04,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:13:04,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:13:04,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:13:04,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:13:04,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:13:04,364 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:13:04,364 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 1142 transitions, 36243 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:04,364 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:13:04,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:13:04,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:13:12,167 INFO L129 PetriNetUnfolder]: 4599/15194 cut-off events. [2022-01-19 05:13:12,168 INFO L130 PetriNetUnfolder]: For 383151/383235 co-relation queries the response was YES. [2022-01-19 05:13:12,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88785 conditions, 15194 events. 4599/15194 cut-off events. For 383151/383235 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 177461 event pairs, 2250 based on Foata normal form. 33/14890 useless extension candidates. Maximal degree in co-relation 88564. Up to 4590 conditions per place. [2022-01-19 05:13:12,393 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 779 selfloop transitions, 433 changer transitions 0/1275 dead transitions. [2022-01-19 05:13:12,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 700 places, 1275 transitions, 40533 flow [2022-01-19 05:13:12,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 05:13:12,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 05:13:12,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2000 transitions. [2022-01-19 05:13:12,394 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5120327700972862 [2022-01-19 05:13:12,395 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2000 transitions. [2022-01-19 05:13:12,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2000 transitions. [2022-01-19 05:13:12,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:13:12,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2000 transitions. [2022-01-19 05:13:12,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.23809523809524) internal successors, (2000), 21 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:12,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:12,399 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:12,399 INFO L186 Difference]: Start difference. First operand has 680 places, 1142 transitions, 36243 flow. Second operand 21 states and 2000 transitions. [2022-01-19 05:13:12,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 700 places, 1275 transitions, 40533 flow [2022-01-19 05:13:15,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 692 places, 1275 transitions, 39783 flow, removed 130 selfloop flow, removed 8 redundant places. [2022-01-19 05:13:15,086 INFO L242 Difference]: Finished difference. Result has 698 places, 1158 transitions, 36913 flow [2022-01-19 05:13:15,087 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=35493, PETRI_DIFFERENCE_MINUEND_PLACES=672, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=417, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=709, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=36913, PETRI_PLACES=698, PETRI_TRANSITIONS=1158} [2022-01-19 05:13:15,087 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 526 predicate places. [2022-01-19 05:13:15,088 INFO L470 AbstractCegarLoop]: Abstraction has has 698 places, 1158 transitions, 36913 flow [2022-01-19 05:13:15,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:15,088 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:13:15,088 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:13:15,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-19 05:13:15,088 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:13:15,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:13:15,089 INFO L85 PathProgramCache]: Analyzing trace with hash 464141231, now seen corresponding path program 24 times [2022-01-19 05:13:15,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:13:15,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210616822] [2022-01-19 05:13:15,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:13:15,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:13:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:13:15,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:13:15,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:13:15,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210616822] [2022-01-19 05:13:15,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210616822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:13:15,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:13:15,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:13:15,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228352353] [2022-01-19 05:13:15,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:13:15,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:13:15,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:13:15,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:13:15,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:13:15,466 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:13:15,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 1158 transitions, 36913 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:15,467 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:13:15,467 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:13:15,467 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:13:23,292 INFO L129 PetriNetUnfolder]: 4596/15219 cut-off events. [2022-01-19 05:13:23,292 INFO L130 PetriNetUnfolder]: For 396514/396598 co-relation queries the response was YES. [2022-01-19 05:13:23,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89672 conditions, 15219 events. 4596/15219 cut-off events. For 396514/396598 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 177495 event pairs, 2030 based on Foata normal form. 33/14914 useless extension candidates. Maximal degree in co-relation 89445. Up to 4484 conditions per place. [2022-01-19 05:13:23,537 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 814 selfloop transitions, 466 changer transitions 0/1343 dead transitions. [2022-01-19 05:13:23,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 718 places, 1343 transitions, 42922 flow [2022-01-19 05:13:23,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 05:13:23,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 05:13:23,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1995 transitions. [2022-01-19 05:13:23,539 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.510752688172043 [2022-01-19 05:13:23,539 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1995 transitions. [2022-01-19 05:13:23,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1995 transitions. [2022-01-19 05:13:23,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:13:23,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1995 transitions. [2022-01-19 05:13:23,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.0) internal successors, (1995), 21 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:23,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:23,542 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:23,542 INFO L186 Difference]: Start difference. First operand has 698 places, 1158 transitions, 36913 flow. Second operand 21 states and 1995 transitions. [2022-01-19 05:13:23,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 718 places, 1343 transitions, 42922 flow [2022-01-19 05:13:26,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 708 places, 1343 transitions, 42196 flow, removed 145 selfloop flow, removed 10 redundant places. [2022-01-19 05:13:26,454 INFO L242 Difference]: Finished difference. Result has 715 places, 1186 transitions, 38466 flow [2022-01-19 05:13:26,455 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=36206, PETRI_DIFFERENCE_MINUEND_PLACES=688, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=438, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=38466, PETRI_PLACES=715, PETRI_TRANSITIONS=1186} [2022-01-19 05:13:26,456 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 543 predicate places. [2022-01-19 05:13:26,456 INFO L470 AbstractCegarLoop]: Abstraction has has 715 places, 1186 transitions, 38466 flow [2022-01-19 05:13:26,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:26,456 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:13:26,457 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:13:26,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-19 05:13:26,457 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:13:26,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:13:26,457 INFO L85 PathProgramCache]: Analyzing trace with hash -433342677, now seen corresponding path program 25 times [2022-01-19 05:13:26,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:13:26,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559288056] [2022-01-19 05:13:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:13:26,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:13:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:13:26,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:13:26,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:13:26,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559288056] [2022-01-19 05:13:26,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559288056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:13:26,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:13:26,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:13:26,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313625125] [2022-01-19 05:13:26,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:13:26,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:13:26,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:13:26,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:13:26,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:13:26,832 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:13:26,833 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 715 places, 1186 transitions, 38466 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:26,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:13:26,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:13:26,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:13:35,549 INFO L129 PetriNetUnfolder]: 4593/15306 cut-off events. [2022-01-19 05:13:35,550 INFO L130 PetriNetUnfolder]: For 418338/418412 co-relation queries the response was YES. [2022-01-19 05:13:35,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90804 conditions, 15306 events. 4593/15306 cut-off events. For 418338/418412 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 179039 event pairs, 2201 based on Foata normal form. 33/14993 useless extension candidates. Maximal degree in co-relation 90572. Up to 5261 conditions per place. [2022-01-19 05:13:35,828 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 836 selfloop transitions, 472 changer transitions 0/1371 dead transitions. [2022-01-19 05:13:35,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 735 places, 1371 transitions, 44687 flow [2022-01-19 05:13:35,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 05:13:35,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 05:13:35,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2001 transitions. [2022-01-19 05:13:35,830 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5122887864823349 [2022-01-19 05:13:35,830 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2001 transitions. [2022-01-19 05:13:35,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2001 transitions. [2022-01-19 05:13:35,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:13:35,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2001 transitions. [2022-01-19 05:13:35,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.28571428571429) internal successors, (2001), 21 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:35,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:35,834 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:35,834 INFO L186 Difference]: Start difference. First operand has 715 places, 1186 transitions, 38466 flow. Second operand 21 states and 2001 transitions. [2022-01-19 05:13:35,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 735 places, 1371 transitions, 44687 flow [2022-01-19 05:13:38,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 723 places, 1371 transitions, 44143 flow, removed 150 selfloop flow, removed 12 redundant places. [2022-01-19 05:13:38,974 INFO L242 Difference]: Finished difference. Result has 732 places, 1216 transitions, 40439 flow [2022-01-19 05:13:38,975 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=37922, PETRI_DIFFERENCE_MINUEND_PLACES=703, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=442, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=723, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=40439, PETRI_PLACES=732, PETRI_TRANSITIONS=1216} [2022-01-19 05:13:38,975 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 560 predicate places. [2022-01-19 05:13:38,975 INFO L470 AbstractCegarLoop]: Abstraction has has 732 places, 1216 transitions, 40439 flow [2022-01-19 05:13:38,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:38,975 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:13:38,976 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:13:38,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-19 05:13:38,976 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:13:38,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:13:38,976 INFO L85 PathProgramCache]: Analyzing trace with hash 285694885, now seen corresponding path program 26 times [2022-01-19 05:13:38,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:13:38,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441815882] [2022-01-19 05:13:38,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:13:38,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:13:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:13:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:13:39,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:13:39,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441815882] [2022-01-19 05:13:39,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441815882] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:13:39,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:13:39,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:13:39,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340728122] [2022-01-19 05:13:39,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:13:39,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:13:39,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:13:39,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:13:39,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:13:39,378 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:13:39,379 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 1216 transitions, 40439 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:39,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:13:39,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:13:39,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:13:47,909 INFO L129 PetriNetUnfolder]: 4593/15294 cut-off events. [2022-01-19 05:13:47,910 INFO L130 PetriNetUnfolder]: For 440692/440766 co-relation queries the response was YES. [2022-01-19 05:13:48,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91276 conditions, 15294 events. 4593/15294 cut-off events. For 440692/440766 co-relation queries the response was YES. Maximal size of possible extension queue 876. Compared 178923 event pairs, 2176 based on Foata normal form. 33/14986 useless extension candidates. Maximal degree in co-relation 91039. Up to 5261 conditions per place. [2022-01-19 05:13:48,172 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 834 selfloop transitions, 480 changer transitions 0/1377 dead transitions. [2022-01-19 05:13:48,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 752 places, 1377 transitions, 45974 flow [2022-01-19 05:13:48,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 05:13:48,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 05:13:48,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1991 transitions. [2022-01-19 05:13:48,177 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5097286226318485 [2022-01-19 05:13:48,177 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1991 transitions. [2022-01-19 05:13:48,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1991 transitions. [2022-01-19 05:13:48,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:13:48,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1991 transitions. [2022-01-19 05:13:48,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.80952380952381) internal successors, (1991), 21 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:48,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:48,182 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:48,182 INFO L186 Difference]: Start difference. First operand has 732 places, 1216 transitions, 40439 flow. Second operand 21 states and 1991 transitions. [2022-01-19 05:13:48,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 752 places, 1377 transitions, 45974 flow [2022-01-19 05:13:51,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 742 places, 1377 transitions, 45417 flow, removed 161 selfloop flow, removed 10 redundant places. [2022-01-19 05:13:51,513 INFO L242 Difference]: Finished difference. Result has 748 places, 1232 transitions, 41419 flow [2022-01-19 05:13:51,514 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=39882, PETRI_DIFFERENCE_MINUEND_PLACES=722, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=464, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=736, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=41419, PETRI_PLACES=748, PETRI_TRANSITIONS=1232} [2022-01-19 05:13:51,514 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 576 predicate places. [2022-01-19 05:13:51,514 INFO L470 AbstractCegarLoop]: Abstraction has has 748 places, 1232 transitions, 41419 flow [2022-01-19 05:13:51,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:51,514 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:13:51,514 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:13:51,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-19 05:13:51,515 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:13:51,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:13:51,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1950886853, now seen corresponding path program 27 times [2022-01-19 05:13:51,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:13:51,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237019132] [2022-01-19 05:13:51,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:13:51,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:13:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:13:51,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:13:51,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:13:51,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237019132] [2022-01-19 05:13:51,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237019132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:13:51,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:13:51,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:13:51,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149621559] [2022-01-19 05:13:51,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:13:51,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:13:51,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:13:51,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:13:51,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:13:51,932 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:13:51,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 748 places, 1232 transitions, 41419 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:13:51,933 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:13:51,933 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:13:51,933 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:14:01,182 INFO L129 PetriNetUnfolder]: 4611/15453 cut-off events. [2022-01-19 05:14:01,182 INFO L130 PetriNetUnfolder]: For 481382/481457 co-relation queries the response was YES. [2022-01-19 05:14:01,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93703 conditions, 15453 events. 4611/15453 cut-off events. For 481382/481457 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 180299 event pairs, 592 based on Foata normal form. 28/15305 useless extension candidates. Maximal degree in co-relation 93463. Up to 3305 conditions per place. [2022-01-19 05:14:01,429 INFO L132 encePairwiseOnDemand]: 159/186 looper letters, 832 selfloop transitions, 619 changer transitions 0/1514 dead transitions. [2022-01-19 05:14:01,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 775 places, 1514 transitions, 50616 flow [2022-01-19 05:14:01,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 05:14:01,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 05:14:01,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2646 transitions. [2022-01-19 05:14:01,432 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5080645161290323 [2022-01-19 05:14:01,432 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2646 transitions. [2022-01-19 05:14:01,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2646 transitions. [2022-01-19 05:14:01,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:14:01,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2646 transitions. [2022-01-19 05:14:01,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 94.5) internal successors, (2646), 28 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:14:01,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 186.0) internal successors, (5394), 29 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:14:01,438 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 186.0) internal successors, (5394), 29 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:14:01,438 INFO L186 Difference]: Start difference. First operand has 748 places, 1232 transitions, 41419 flow. Second operand 28 states and 2646 transitions. [2022-01-19 05:14:01,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 775 places, 1514 transitions, 50616 flow [2022-01-19 05:14:04,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 765 places, 1514 transitions, 50016 flow, removed 177 selfloop flow, removed 10 redundant places. [2022-01-19 05:14:04,866 INFO L242 Difference]: Finished difference. Result has 778 places, 1320 transitions, 46076 flow [2022-01-19 05:14:04,867 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=40845, PETRI_DIFFERENCE_MINUEND_PLACES=738, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=533, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=46076, PETRI_PLACES=778, PETRI_TRANSITIONS=1320} [2022-01-19 05:14:04,867 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 606 predicate places. [2022-01-19 05:14:04,867 INFO L470 AbstractCegarLoop]: Abstraction has has 778 places, 1320 transitions, 46076 flow [2022-01-19 05:14:04,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:14:04,868 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:14:04,868 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:14:04,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-19 05:14:04,868 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:14:04,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:14:04,868 INFO L85 PathProgramCache]: Analyzing trace with hash -714569455, now seen corresponding path program 28 times [2022-01-19 05:14:04,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:14:04,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802501947] [2022-01-19 05:14:04,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:14:04,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:14:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:14:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:14:05,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:14:05,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802501947] [2022-01-19 05:14:05,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802501947] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:14:05,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:14:05,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-19 05:14:05,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084594607] [2022-01-19 05:14:05,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:14:05,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-19 05:14:05,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:14:05,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-19 05:14:05,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-01-19 05:14:05,179 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-01-19 05:14:05,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 778 places, 1320 transitions, 46076 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:14:05,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:14:05,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-01-19 05:14:05,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:14:13,561 INFO L129 PetriNetUnfolder]: 4136/14965 cut-off events. [2022-01-19 05:14:13,561 INFO L130 PetriNetUnfolder]: For 541727/542192 co-relation queries the response was YES. [2022-01-19 05:14:13,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94156 conditions, 14965 events. 4136/14965 cut-off events. For 541727/542192 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 178567 event pairs, 2307 based on Foata normal form. 327/14953 useless extension candidates. Maximal degree in co-relation 93906. Up to 6143 conditions per place. [2022-01-19 05:14:13,807 INFO L132 encePairwiseOnDemand]: 164/186 looper letters, 848 selfloop transitions, 520 changer transitions 0/1463 dead transitions. [2022-01-19 05:14:13,807 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 795 places, 1463 transitions, 52521 flow [2022-01-19 05:14:13,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 05:14:13,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 05:14:13,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1725 transitions. [2022-01-19 05:14:13,809 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5152329749103942 [2022-01-19 05:14:13,809 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1725 transitions. [2022-01-19 05:14:13,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1725 transitions. [2022-01-19 05:14:13,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:14:13,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1725 transitions. [2022-01-19 05:14:13,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 95.83333333333333) internal successors, (1725), 18 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:14:13,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:14:13,813 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:14:13,813 INFO L186 Difference]: Start difference. First operand has 778 places, 1320 transitions, 46076 flow. Second operand 18 states and 1725 transitions. [2022-01-19 05:14:13,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 795 places, 1463 transitions, 52521 flow [2022-01-19 05:14:17,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 789 places, 1463 transitions, 51731 flow, removed 353 selfloop flow, removed 6 redundant places. [2022-01-19 05:14:17,676 INFO L242 Difference]: Finished difference. Result has 797 places, 1363 transitions, 48379 flow [2022-01-19 05:14:17,676 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=45343, PETRI_DIFFERENCE_MINUEND_PLACES=772, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=477, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=815, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=48379, PETRI_PLACES=797, PETRI_TRANSITIONS=1363} [2022-01-19 05:14:17,677 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 625 predicate places. [2022-01-19 05:14:17,677 INFO L470 AbstractCegarLoop]: Abstraction has has 797 places, 1363 transitions, 48379 flow [2022-01-19 05:14:17,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:14:17,677 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:14:17,677 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:14:17,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-19 05:14:17,677 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:14:17,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:14:17,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1467873009, now seen corresponding path program 29 times [2022-01-19 05:14:17,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:14:17,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090570231] [2022-01-19 05:14:17,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:14:17,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:14:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:14:18,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:14:18,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:14:18,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090570231] [2022-01-19 05:14:18,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090570231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:14:18,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:14:18,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:14:18,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843270096] [2022-01-19 05:14:18,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:14:18,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:14:18,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:14:18,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:14:18,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:14:18,125 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:14:18,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 797 places, 1363 transitions, 48379 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:14:18,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:14:18,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:14:18,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:14:28,523 INFO L129 PetriNetUnfolder]: 4608/15919 cut-off events. [2022-01-19 05:14:28,523 INFO L130 PetriNetUnfolder]: For 579045/579112 co-relation queries the response was YES. [2022-01-19 05:14:28,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101914 conditions, 15919 events. 4608/15919 cut-off events. For 579045/579112 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 189013 event pairs, 1945 based on Foata normal form. 36/15620 useless extension candidates. Maximal degree in co-relation 101656. Up to 5350 conditions per place. [2022-01-19 05:14:28,833 INFO L132 encePairwiseOnDemand]: 160/186 looper letters, 978 selfloop transitions, 550 changer transitions 0/1591 dead transitions. [2022-01-19 05:14:28,833 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 1591 transitions, 56219 flow [2022-01-19 05:14:28,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-19 05:14:28,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-19 05:14:28,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2454 transitions. [2022-01-19 05:14:28,835 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5074441687344913 [2022-01-19 05:14:28,835 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2454 transitions. [2022-01-19 05:14:28,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2454 transitions. [2022-01-19 05:14:28,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:14:28,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2454 transitions. [2022-01-19 05:14:28,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 94.38461538461539) internal successors, (2454), 26 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:14:28,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:14:28,840 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:14:28,841 INFO L186 Difference]: Start difference. First operand has 797 places, 1363 transitions, 48379 flow. Second operand 26 states and 2454 transitions. [2022-01-19 05:14:28,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 822 places, 1591 transitions, 56219 flow [2022-01-19 05:14:33,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 815 places, 1591 transitions, 55715 flow, removed 153 selfloop flow, removed 7 redundant places. [2022-01-19 05:14:33,597 INFO L242 Difference]: Finished difference. Result has 827 places, 1430 transitions, 52325 flow [2022-01-19 05:14:33,598 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=47899, PETRI_DIFFERENCE_MINUEND_PLACES=790, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=486, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=832, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=52325, PETRI_PLACES=827, PETRI_TRANSITIONS=1430} [2022-01-19 05:14:33,599 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 655 predicate places. [2022-01-19 05:14:33,599 INFO L470 AbstractCegarLoop]: Abstraction has has 827 places, 1430 transitions, 52325 flow [2022-01-19 05:14:33,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:14:33,599 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:14:33,599 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:14:33,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-19 05:14:33,599 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:14:33,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:14:33,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1705692587, now seen corresponding path program 30 times [2022-01-19 05:14:33,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:14:33,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996652319] [2022-01-19 05:14:33,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:14:33,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:14:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:14:33,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:14:33,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:14:33,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996652319] [2022-01-19 05:14:33,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996652319] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:14:33,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:14:33,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:14:33,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65302613] [2022-01-19 05:14:33,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:14:33,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:14:33,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:14:33,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:14:33,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:14:33,985 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:14:33,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 827 places, 1430 transitions, 52325 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:14:33,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:14:33,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:14:33,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:14:44,339 INFO L129 PetriNetUnfolder]: 4608/15910 cut-off events. [2022-01-19 05:14:44,340 INFO L130 PetriNetUnfolder]: For 628559/628559 co-relation queries the response was YES. [2022-01-19 05:14:44,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104395 conditions, 15910 events. 4608/15910 cut-off events. For 628559/628559 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 187788 event pairs, 2054 based on Foata normal form. 1/15628 useless extension candidates. Maximal degree in co-relation 104126. Up to 5782 conditions per place. [2022-01-19 05:14:44,642 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 971 selfloop transitions, 554 changer transitions 0/1588 dead transitions. [2022-01-19 05:14:44,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 847 places, 1588 transitions, 58923 flow [2022-01-19 05:14:44,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 05:14:44,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 05:14:44,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1985 transitions. [2022-01-19 05:14:44,644 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5081925243215566 [2022-01-19 05:14:44,644 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1985 transitions. [2022-01-19 05:14:44,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1985 transitions. [2022-01-19 05:14:44,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:14:44,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1985 transitions. [2022-01-19 05:14:44,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.52380952380952) internal successors, (1985), 21 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:14:44,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:14:44,648 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:14:44,648 INFO L186 Difference]: Start difference. First operand has 827 places, 1430 transitions, 52325 flow. Second operand 21 states and 1985 transitions. [2022-01-19 05:14:44,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 847 places, 1588 transitions, 58923 flow [2022-01-19 05:14:50,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 841 places, 1588 transitions, 57889 flow, removed 466 selfloop flow, removed 6 redundant places. [2022-01-19 05:14:50,439 INFO L242 Difference]: Finished difference. Result has 849 places, 1456 transitions, 53648 flow [2022-01-19 05:14:50,440 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=51565, PETRI_DIFFERENCE_MINUEND_PLACES=821, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=528, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=876, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=53648, PETRI_PLACES=849, PETRI_TRANSITIONS=1456} [2022-01-19 05:14:50,441 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 677 predicate places. [2022-01-19 05:14:50,441 INFO L470 AbstractCegarLoop]: Abstraction has has 849 places, 1456 transitions, 53648 flow [2022-01-19 05:14:50,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:14:50,441 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:14:50,441 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:14:50,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-19 05:14:50,441 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:14:50,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:14:50,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1083486911, now seen corresponding path program 31 times [2022-01-19 05:14:50,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:14:50,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808876412] [2022-01-19 05:14:50,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:14:50,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:14:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:14:50,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:14:50,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:14:50,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808876412] [2022-01-19 05:14:50,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808876412] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:14:50,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:14:50,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:14:50,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795192827] [2022-01-19 05:14:50,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:14:50,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:14:50,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:14:50,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:14:50,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:14:50,853 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:14:50,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 849 places, 1456 transitions, 53648 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:14:50,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:14:50,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:14:50,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:15:02,077 INFO L129 PetriNetUnfolder]: 4605/15811 cut-off events. [2022-01-19 05:15:02,077 INFO L130 PetriNetUnfolder]: For 641890/641994 co-relation queries the response was YES. [2022-01-19 05:15:02,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105386 conditions, 15811 events. 4605/15811 cut-off events. For 641890/641994 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 187559 event pairs, 453 based on Foata normal form. 49/15685 useless extension candidates. Maximal degree in co-relation 105108. Up to 3354 conditions per place. [2022-01-19 05:15:02,391 INFO L132 encePairwiseOnDemand]: 159/186 looper letters, 948 selfloop transitions, 696 changer transitions 0/1707 dead transitions. [2022-01-19 05:15:02,391 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 877 places, 1707 transitions, 62443 flow [2022-01-19 05:15:02,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 05:15:02,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 05:15:02,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2741 transitions. [2022-01-19 05:15:02,394 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5081572117167222 [2022-01-19 05:15:02,394 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2741 transitions. [2022-01-19 05:15:02,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2741 transitions. [2022-01-19 05:15:02,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:15:02,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2741 transitions. [2022-01-19 05:15:02,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 94.51724137931035) internal successors, (2741), 29 states have internal predecessors, (2741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:15:02,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 186.0) internal successors, (5580), 30 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:15:02,400 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 186.0) internal successors, (5580), 30 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:15:02,400 INFO L186 Difference]: Start difference. First operand has 849 places, 1456 transitions, 53648 flow. Second operand 29 states and 2741 transitions. [2022-01-19 05:15:02,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 877 places, 1707 transitions, 62443 flow [2022-01-19 05:15:08,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 869 places, 1707 transitions, 61529 flow, removed 249 selfloop flow, removed 8 redundant places. [2022-01-19 05:15:08,301 INFO L242 Difference]: Finished difference. Result has 877 places, 1488 transitions, 56345 flow [2022-01-19 05:15:08,303 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=52792, PETRI_DIFFERENCE_MINUEND_PLACES=841, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=664, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=767, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=56345, PETRI_PLACES=877, PETRI_TRANSITIONS=1488} [2022-01-19 05:15:08,303 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 705 predicate places. [2022-01-19 05:15:08,303 INFO L470 AbstractCegarLoop]: Abstraction has has 877 places, 1488 transitions, 56345 flow [2022-01-19 05:15:08,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:15:08,303 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:15:08,304 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:15:08,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-19 05:15:08,304 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:15:08,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:15:08,304 INFO L85 PathProgramCache]: Analyzing trace with hash -742526755, now seen corresponding path program 32 times [2022-01-19 05:15:08,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:15:08,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342654222] [2022-01-19 05:15:08,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:15:08,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:15:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:15:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:15:08,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:15:08,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342654222] [2022-01-19 05:15:08,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342654222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:15:08,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:15:08,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:15:08,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107394649] [2022-01-19 05:15:08,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:15:08,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:15:08,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:15:08,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:15:08,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:15:08,710 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:15:08,710 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 877 places, 1488 transitions, 56345 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:15:08,711 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:15:08,711 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:15:08,711 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:15:19,492 INFO L129 PetriNetUnfolder]: 4602/15950 cut-off events. [2022-01-19 05:15:19,493 INFO L130 PetriNetUnfolder]: For 678735/678837 co-relation queries the response was YES. [2022-01-19 05:15:19,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108491 conditions, 15950 events. 4602/15950 cut-off events. For 678735/678837 co-relation queries the response was YES. Maximal size of possible extension queue 879. Compared 189695 event pairs, 1828 based on Foata normal form. 51/15719 useless extension candidates. Maximal degree in co-relation 108206. Up to 7342 conditions per place. [2022-01-19 05:15:19,806 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 1019 selfloop transitions, 549 changer transitions 0/1631 dead transitions. [2022-01-19 05:15:19,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 897 places, 1631 transitions, 62664 flow [2022-01-19 05:15:19,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 05:15:19,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 05:15:19,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1994 transitions. [2022-01-19 05:15:19,808 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5104966717869943 [2022-01-19 05:15:19,808 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1994 transitions. [2022-01-19 05:15:19,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1994 transitions. [2022-01-19 05:15:19,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:15:19,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1994 transitions. [2022-01-19 05:15:19,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.95238095238095) internal successors, (1994), 21 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:15:19,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:15:19,812 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:15:19,812 INFO L186 Difference]: Start difference. First operand has 877 places, 1488 transitions, 56345 flow. Second operand 21 states and 1994 transitions. [2022-01-19 05:15:19,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 897 places, 1631 transitions, 62664 flow [2022-01-19 05:15:25,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 884 places, 1631 transitions, 61953 flow, removed 194 selfloop flow, removed 13 redundant places. [2022-01-19 05:15:25,949 INFO L242 Difference]: Finished difference. Result has 893 places, 1527 transitions, 58963 flow [2022-01-19 05:15:25,950 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=55636, PETRI_DIFFERENCE_MINUEND_PLACES=864, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=510, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=945, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=58963, PETRI_PLACES=893, PETRI_TRANSITIONS=1527} [2022-01-19 05:15:25,950 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 721 predicate places. [2022-01-19 05:15:25,950 INFO L470 AbstractCegarLoop]: Abstraction has has 893 places, 1527 transitions, 58963 flow [2022-01-19 05:15:25,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:15:25,951 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:15:25,951 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:15:25,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-19 05:15:25,951 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:15:25,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:15:25,951 INFO L85 PathProgramCache]: Analyzing trace with hash -126246539, now seen corresponding path program 33 times [2022-01-19 05:15:25,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:15:25,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830798681] [2022-01-19 05:15:25,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:15:25,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:15:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:15:26,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:15:26,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:15:26,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830798681] [2022-01-19 05:15:26,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830798681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:15:26,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:15:26,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:15:26,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598140920] [2022-01-19 05:15:26,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:15:26,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:15:26,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:15:26,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:15:26,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:15:26,305 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:15:26,306 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 893 places, 1527 transitions, 58963 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:15:26,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:15:26,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:15:26,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:15:37,877 INFO L129 PetriNetUnfolder]: 4599/16066 cut-off events. [2022-01-19 05:15:37,877 INFO L130 PetriNetUnfolder]: For 722970/723034 co-relation queries the response was YES. [2022-01-19 05:15:38,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109440 conditions, 16066 events. 4599/16066 cut-off events. For 722970/723034 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 191271 event pairs, 1941 based on Foata normal form. 37/15768 useless extension candidates. Maximal degree in co-relation 109146. Up to 5350 conditions per place. [2022-01-19 05:15:38,366 INFO L132 encePairwiseOnDemand]: 160/186 looper letters, 1060 selfloop transitions, 597 changer transitions 0/1720 dead transitions. [2022-01-19 05:15:38,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 919 places, 1720 transitions, 66158 flow [2022-01-19 05:15:38,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 05:15:38,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 05:15:38,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2546 transitions. [2022-01-19 05:15:38,368 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5069693349263241 [2022-01-19 05:15:38,368 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2546 transitions. [2022-01-19 05:15:38,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2546 transitions. [2022-01-19 05:15:38,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:15:38,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2546 transitions. [2022-01-19 05:15:38,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 94.29629629629629) internal successors, (2546), 27 states have internal predecessors, (2546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:15:38,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 186.0) internal successors, (5208), 28 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:15:38,375 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 186.0) internal successors, (5208), 28 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:15:38,375 INFO L186 Difference]: Start difference. First operand has 893 places, 1527 transitions, 58963 flow. Second operand 27 states and 2546 transitions. [2022-01-19 05:15:38,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 919 places, 1720 transitions, 66158 flow [2022-01-19 05:15:45,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 912 places, 1720 transitions, 65287 flow, removed 249 selfloop flow, removed 7 redundant places. [2022-01-19 05:15:45,831 INFO L242 Difference]: Finished difference. Result has 920 places, 1559 transitions, 61550 flow [2022-01-19 05:15:45,832 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=58101, PETRI_DIFFERENCE_MINUEND_PLACES=886, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=565, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=937, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=61550, PETRI_PLACES=920, PETRI_TRANSITIONS=1559} [2022-01-19 05:15:45,832 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 748 predicate places. [2022-01-19 05:15:45,832 INFO L470 AbstractCegarLoop]: Abstraction has has 920 places, 1559 transitions, 61550 flow [2022-01-19 05:15:45,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:15:45,833 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:15:45,833 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:15:45,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-19 05:15:45,833 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:15:45,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:15:45,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1559604843, now seen corresponding path program 34 times [2022-01-19 05:15:45,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:15:45,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433734241] [2022-01-19 05:15:45,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:15:45,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:15:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:15:46,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:15:46,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:15:46,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433734241] [2022-01-19 05:15:46,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433734241] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:15:46,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:15:46,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:15:46,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094991781] [2022-01-19 05:15:46,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:15:46,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:15:46,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:15:46,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:15:46,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:15:46,245 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:15:46,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 920 places, 1559 transitions, 61550 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:15:46,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:15:46,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:15:46,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:15:57,856 INFO L129 PetriNetUnfolder]: 4599/16056 cut-off events. [2022-01-19 05:15:57,856 INFO L130 PetriNetUnfolder]: For 749275/749339 co-relation queries the response was YES. [2022-01-19 05:15:58,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110891 conditions, 16056 events. 4599/16056 cut-off events. For 749275/749339 co-relation queries the response was YES. Maximal size of possible extension queue 867. Compared 190653 event pairs, 2257 based on Foata normal form. 37/15785 useless extension candidates. Maximal degree in co-relation 110589. Up to 5350 conditions per place. [2022-01-19 05:15:58,229 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 1097 selfloop transitions, 543 changer transitions 0/1703 dead transitions. [2022-01-19 05:15:58,229 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 940 places, 1703 transitions, 67691 flow [2022-01-19 05:15:58,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 05:15:58,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 05:15:58,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1994 transitions. [2022-01-19 05:15:58,230 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5104966717869943 [2022-01-19 05:15:58,231 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1994 transitions. [2022-01-19 05:15:58,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1994 transitions. [2022-01-19 05:15:58,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:15:58,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1994 transitions. [2022-01-19 05:15:58,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.95238095238095) internal successors, (1994), 21 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:15:58,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:15:58,235 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:15:58,235 INFO L186 Difference]: Start difference. First operand has 920 places, 1559 transitions, 61550 flow. Second operand 21 states and 1994 transitions. [2022-01-19 05:15:58,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 940 places, 1703 transitions, 67691 flow [2022-01-19 05:16:05,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 926 places, 1703 transitions, 66900 flow, removed 243 selfloop flow, removed 14 redundant places. [2022-01-19 05:16:05,928 INFO L242 Difference]: Finished difference. Result has 933 places, 1582 transitions, 62795 flow [2022-01-19 05:16:05,930 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=60761, PETRI_DIFFERENCE_MINUEND_PLACES=906, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=520, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1016, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=62795, PETRI_PLACES=933, PETRI_TRANSITIONS=1582} [2022-01-19 05:16:05,932 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 761 predicate places. [2022-01-19 05:16:05,932 INFO L470 AbstractCegarLoop]: Abstraction has has 933 places, 1582 transitions, 62795 flow [2022-01-19 05:16:05,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:16:05,933 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:16:05,933 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:16:05,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-19 05:16:05,933 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:16:05,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:16:05,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1371240753, now seen corresponding path program 35 times [2022-01-19 05:16:05,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:16:05,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120568013] [2022-01-19 05:16:05,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:16:05,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:16:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:16:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:16:06,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:16:06,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120568013] [2022-01-19 05:16:06,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120568013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:16:06,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:16:06,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:16:06,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858790610] [2022-01-19 05:16:06,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:16:06,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:16:06,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:16:06,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:16:06,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:16:06,357 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:16:06,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 933 places, 1582 transitions, 62795 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:16:06,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:16:06,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:16:06,359 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:16:18,732 INFO L129 PetriNetUnfolder]: 4599/16052 cut-off events. [2022-01-19 05:16:18,732 INFO L130 PetriNetUnfolder]: For 760562/760626 co-relation queries the response was YES. [2022-01-19 05:16:19,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110893 conditions, 16052 events. 4599/16052 cut-off events. For 760562/760626 co-relation queries the response was YES. Maximal size of possible extension queue 867. Compared 190709 event pairs, 2398 based on Foata normal form. 37/15780 useless extension candidates. Maximal degree in co-relation 110583. Up to 5350 conditions per place. [2022-01-19 05:16:19,131 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 1125 selfloop transitions, 532 changer transitions 0/1720 dead transitions. [2022-01-19 05:16:19,131 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 952 places, 1720 transitions, 68425 flow [2022-01-19 05:16:19,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 05:16:19,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 05:16:19,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1909 transitions. [2022-01-19 05:16:19,133 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5131720430107527 [2022-01-19 05:16:19,133 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1909 transitions. [2022-01-19 05:16:19,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1909 transitions. [2022-01-19 05:16:19,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:16:19,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1909 transitions. [2022-01-19 05:16:19,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 95.45) internal successors, (1909), 20 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:16:19,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:16:19,136 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:16:19,136 INFO L186 Difference]: Start difference. First operand has 933 places, 1582 transitions, 62795 flow. Second operand 20 states and 1909 transitions. [2022-01-19 05:16:19,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 952 places, 1720 transitions, 68425 flow [2022-01-19 05:16:27,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 934 places, 1720 transitions, 67213 flow, removed 258 selfloop flow, removed 18 redundant places. [2022-01-19 05:16:27,274 INFO L242 Difference]: Finished difference. Result has 939 places, 1599 transitions, 63493 flow [2022-01-19 05:16:27,275 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=61583, PETRI_DIFFERENCE_MINUEND_PLACES=915, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=515, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1050, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=63493, PETRI_PLACES=939, PETRI_TRANSITIONS=1599} [2022-01-19 05:16:27,276 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 767 predicate places. [2022-01-19 05:16:27,276 INFO L470 AbstractCegarLoop]: Abstraction has has 939 places, 1599 transitions, 63493 flow [2022-01-19 05:16:27,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:16:27,276 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:16:27,276 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:16:27,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-19 05:16:27,276 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:16:27,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:16:27,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1108716475, now seen corresponding path program 36 times [2022-01-19 05:16:27,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:16:27,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922085577] [2022-01-19 05:16:27,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:16:27,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:16:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:16:27,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:16:27,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:16:27,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922085577] [2022-01-19 05:16:27,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922085577] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:16:27,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:16:27,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:16:27,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086147338] [2022-01-19 05:16:27,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:16:27,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:16:27,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:16:27,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:16:27,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:16:27,690 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:16:27,691 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 939 places, 1599 transitions, 63493 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:16:27,691 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:16:27,692 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:16:27,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:16:39,714 INFO L129 PetriNetUnfolder]: 4599/16080 cut-off events. [2022-01-19 05:16:39,714 INFO L130 PetriNetUnfolder]: For 765923/765987 co-relation queries the response was YES. [2022-01-19 05:16:40,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110763 conditions, 16080 events. 4599/16080 cut-off events. For 765923/765987 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 191167 event pairs, 2449 based on Foata normal form. 37/15810 useless extension candidates. Maximal degree in co-relation 110458. Up to 5350 conditions per place. [2022-01-19 05:16:40,276 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 1140 selfloop transitions, 514 changer transitions 0/1717 dead transitions. [2022-01-19 05:16:40,276 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 959 places, 1717 transitions, 68714 flow [2022-01-19 05:16:40,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 05:16:40,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 05:16:40,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1999 transitions. [2022-01-19 05:16:40,278 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5117767537122376 [2022-01-19 05:16:40,278 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1999 transitions. [2022-01-19 05:16:40,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1999 transitions. [2022-01-19 05:16:40,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:16:40,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1999 transitions. [2022-01-19 05:16:40,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.19047619047619) internal successors, (1999), 21 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:16:40,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:16:40,281 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:16:40,281 INFO L186 Difference]: Start difference. First operand has 939 places, 1599 transitions, 63493 flow. Second operand 21 states and 1999 transitions. [2022-01-19 05:16:40,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 959 places, 1717 transitions, 68714 flow [2022-01-19 05:16:48,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 947 places, 1717 transitions, 67931 flow, removed 261 selfloop flow, removed 12 redundant places. [2022-01-19 05:16:48,059 INFO L242 Difference]: Finished difference. Result has 954 places, 1611 transitions, 64381 flow [2022-01-19 05:16:48,060 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=62711, PETRI_DIFFERENCE_MINUEND_PLACES=927, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=502, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1085, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=64381, PETRI_PLACES=954, PETRI_TRANSITIONS=1611} [2022-01-19 05:16:48,061 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 782 predicate places. [2022-01-19 05:16:48,061 INFO L470 AbstractCegarLoop]: Abstraction has has 954 places, 1611 transitions, 64381 flow [2022-01-19 05:16:48,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:16:48,061 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:16:48,061 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:16:48,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-19 05:16:48,061 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:16:48,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:16:48,062 INFO L85 PathProgramCache]: Analyzing trace with hash 371691483, now seen corresponding path program 37 times [2022-01-19 05:16:48,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:16:48,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233192978] [2022-01-19 05:16:48,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:16:48,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:16:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:16:48,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:16:48,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:16:48,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233192978] [2022-01-19 05:16:48,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233192978] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:16:48,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:16:48,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:16:48,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082513256] [2022-01-19 05:16:48,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:16:48,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:16:48,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:16:48,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:16:48,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:16:48,490 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:16:48,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 954 places, 1611 transitions, 64381 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:16:48,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:16:48,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:16:48,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:17:00,762 INFO L129 PetriNetUnfolder]: 4596/16074 cut-off events. [2022-01-19 05:17:00,762 INFO L130 PetriNetUnfolder]: For 777747/777813 co-relation queries the response was YES. [2022-01-19 05:17:01,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111741 conditions, 16074 events. 4596/16074 cut-off events. For 777747/777813 co-relation queries the response was YES. Maximal size of possible extension queue 889. Compared 191599 event pairs, 2165 based on Foata normal form. 41/15808 useless extension candidates. Maximal degree in co-relation 111432. Up to 5350 conditions per place. [2022-01-19 05:17:01,119 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 1170 selfloop transitions, 544 changer transitions 0/1777 dead transitions. [2022-01-19 05:17:01,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 974 places, 1777 transitions, 71706 flow [2022-01-19 05:17:01,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 05:17:01,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 05:17:01,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2002 transitions. [2022-01-19 05:17:01,121 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5125448028673835 [2022-01-19 05:17:01,121 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2002 transitions. [2022-01-19 05:17:01,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2002 transitions. [2022-01-19 05:17:01,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:17:01,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2002 transitions. [2022-01-19 05:17:01,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.33333333333333) internal successors, (2002), 21 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:17:01,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:17:01,125 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:17:01,125 INFO L186 Difference]: Start difference. First operand has 954 places, 1611 transitions, 64381 flow. Second operand 21 states and 2002 transitions. [2022-01-19 05:17:01,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 974 places, 1777 transitions, 71706 flow [2022-01-19 05:17:09,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 962 places, 1777 transitions, 70666 flow, removed 288 selfloop flow, removed 12 redundant places. [2022-01-19 05:17:09,327 INFO L242 Difference]: Finished difference. Result has 970 places, 1641 transitions, 66240 flow [2022-01-19 05:17:09,328 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=63344, PETRI_DIFFERENCE_MINUEND_PLACES=942, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=514, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1076, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=66240, PETRI_PLACES=970, PETRI_TRANSITIONS=1641} [2022-01-19 05:17:09,329 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 798 predicate places. [2022-01-19 05:17:09,329 INFO L470 AbstractCegarLoop]: Abstraction has has 970 places, 1641 transitions, 66240 flow [2022-01-19 05:17:09,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:17:09,329 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:17:09,329 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:17:09,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-19 05:17:09,330 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:17:09,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:17:09,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1605274367, now seen corresponding path program 38 times [2022-01-19 05:17:09,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:17:09,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253989983] [2022-01-19 05:17:09,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:17:09,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:17:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:17:09,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:17:09,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:17:09,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253989983] [2022-01-19 05:17:09,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253989983] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:17:09,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:17:09,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:17:09,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714314821] [2022-01-19 05:17:09,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:17:09,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:17:09,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:17:09,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:17:09,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:17:09,733 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:17:09,734 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 970 places, 1641 transitions, 66240 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:17:09,734 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:17:09,734 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:17:09,734 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:17:21,969 INFO L129 PetriNetUnfolder]: 4596/16082 cut-off events. [2022-01-19 05:17:21,969 INFO L130 PetriNetUnfolder]: For 794914/794977 co-relation queries the response was YES. [2022-01-19 05:17:22,306 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111979 conditions, 16082 events. 4596/16082 cut-off events. For 794914/794977 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 191752 event pairs, 2217 based on Foata normal form. 39/15813 useless extension candidates. Maximal degree in co-relation 111665. Up to 5350 conditions per place. [2022-01-19 05:17:22,359 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 1164 selfloop transitions, 542 changer transitions 0/1769 dead transitions. [2022-01-19 05:17:22,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 990 places, 1769 transitions, 71860 flow [2022-01-19 05:17:22,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 05:17:22,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 05:17:22,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1998 transitions. [2022-01-19 05:17:22,361 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.511520737327189 [2022-01-19 05:17:22,361 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1998 transitions. [2022-01-19 05:17:22,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1998 transitions. [2022-01-19 05:17:22,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:17:22,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1998 transitions. [2022-01-19 05:17:22,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.14285714285714) internal successors, (1998), 21 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:17:22,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:17:22,364 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:17:22,365 INFO L186 Difference]: Start difference. First operand has 970 places, 1641 transitions, 66240 flow. Second operand 21 states and 1998 transitions. [2022-01-19 05:17:22,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 990 places, 1769 transitions, 71860 flow [2022-01-19 05:17:30,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 982 places, 1769 transitions, 70517 flow, removed 264 selfloop flow, removed 8 redundant places. [2022-01-19 05:17:30,278 INFO L242 Difference]: Finished difference. Result has 988 places, 1652 transitions, 66630 flow [2022-01-19 05:17:30,280 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=64897, PETRI_DIFFERENCE_MINUEND_PLACES=962, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=531, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1099, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=66630, PETRI_PLACES=988, PETRI_TRANSITIONS=1652} [2022-01-19 05:17:30,280 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 816 predicate places. [2022-01-19 05:17:30,280 INFO L470 AbstractCegarLoop]: Abstraction has has 988 places, 1652 transitions, 66630 flow [2022-01-19 05:17:30,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:17:30,280 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:17:30,281 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:17:30,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-19 05:17:30,281 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:17:30,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:17:30,281 INFO L85 PathProgramCache]: Analyzing trace with hash 870674767, now seen corresponding path program 39 times [2022-01-19 05:17:30,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:17:30,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003387149] [2022-01-19 05:17:30,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:17:30,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:17:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:17:30,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:17:30,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:17:30,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003387149] [2022-01-19 05:17:30,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003387149] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:17:30,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:17:30,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:17:30,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075659079] [2022-01-19 05:17:30,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:17:30,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:17:30,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:17:30,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:17:30,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:17:30,693 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:17:30,694 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 988 places, 1652 transitions, 66630 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:17:30,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:17:30,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:17:30,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:17:43,173 INFO L129 PetriNetUnfolder]: 4593/16189 cut-off events. [2022-01-19 05:17:43,173 INFO L130 PetriNetUnfolder]: For 833478/833478 co-relation queries the response was YES. [2022-01-19 05:17:43,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112780 conditions, 16189 events. 4593/16189 cut-off events. For 833478/833478 co-relation queries the response was YES. Maximal size of possible extension queue 851. Compared 192114 event pairs, 2275 based on Foata normal form. 1/15886 useless extension candidates. Maximal degree in co-relation 112461. Up to 4322 conditions per place. [2022-01-19 05:17:43,543 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 1148 selfloop transitions, 609 changer transitions 0/1820 dead transitions. [2022-01-19 05:17:43,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1008 places, 1820 transitions, 74445 flow [2022-01-19 05:17:43,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 05:17:43,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 05:17:43,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1990 transitions. [2022-01-19 05:17:43,545 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5094726062467998 [2022-01-19 05:17:43,545 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1990 transitions. [2022-01-19 05:17:43,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1990 transitions. [2022-01-19 05:17:43,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:17:43,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1990 transitions. [2022-01-19 05:17:43,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.76190476190476) internal successors, (1990), 21 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:17:43,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:17:43,549 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:17:43,549 INFO L186 Difference]: Start difference. First operand has 988 places, 1652 transitions, 66630 flow. Second operand 21 states and 1990 transitions. [2022-01-19 05:17:43,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1008 places, 1820 transitions, 74445 flow [2022-01-19 05:17:51,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 997 places, 1820 transitions, 72999 flow, removed 275 selfloop flow, removed 11 redundant places. [2022-01-19 05:17:51,304 INFO L242 Difference]: Finished difference. Result has 1006 places, 1685 transitions, 68408 flow [2022-01-19 05:17:51,305 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=65214, PETRI_DIFFERENCE_MINUEND_PLACES=977, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=576, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1052, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=68408, PETRI_PLACES=1006, PETRI_TRANSITIONS=1685} [2022-01-19 05:17:51,305 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 834 predicate places. [2022-01-19 05:17:51,305 INFO L470 AbstractCegarLoop]: Abstraction has has 1006 places, 1685 transitions, 68408 flow [2022-01-19 05:17:51,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:17:51,306 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:17:51,306 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:17:51,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-19 05:17:51,306 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:17:51,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:17:51,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2005255065, now seen corresponding path program 40 times [2022-01-19 05:17:51,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:17:51,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382616671] [2022-01-19 05:17:51,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:17:51,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:17:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:17:51,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:17:51,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:17:51,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382616671] [2022-01-19 05:17:51,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382616671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:17:51,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:17:51,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 05:17:51,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344867956] [2022-01-19 05:17:51,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:17:51,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 05:17:51,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:17:51,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 05:17:51,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-01-19 05:17:51,718 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-19 05:17:51,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1006 places, 1685 transitions, 68408 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:17:51,719 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:17:51,719 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-19 05:17:51,719 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:18:04,451 INFO L129 PetriNetUnfolder]: 4590/16216 cut-off events. [2022-01-19 05:18:04,451 INFO L130 PetriNetUnfolder]: For 846754/846815 co-relation queries the response was YES. [2022-01-19 05:18:04,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113821 conditions, 16216 events. 4590/16216 cut-off events. For 846754/846815 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 193642 event pairs, 2158 based on Foata normal form. 39/15937 useless extension candidates. Maximal degree in co-relation 113496. Up to 5333 conditions per place. [2022-01-19 05:18:04,817 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 1183 selfloop transitions, 609 changer transitions 0/1855 dead transitions. [2022-01-19 05:18:04,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1026 places, 1855 transitions, 76207 flow [2022-01-19 05:18:04,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 05:18:04,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 05:18:04,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1999 transitions. [2022-01-19 05:18:04,819 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5117767537122376 [2022-01-19 05:18:04,819 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1999 transitions. [2022-01-19 05:18:04,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1999 transitions. [2022-01-19 05:18:04,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:18:04,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1999 transitions. [2022-01-19 05:18:04,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.19047619047619) internal successors, (1999), 21 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:18:04,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:18:04,822 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:18:04,822 INFO L186 Difference]: Start difference. First operand has 1006 places, 1685 transitions, 68408 flow. Second operand 21 states and 1999 transitions. [2022-01-19 05:18:04,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1026 places, 1855 transitions, 76207 flow [2022-01-19 05:18:14,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1018 places, 1855 transitions, 75373 flow, removed 250 selfloop flow, removed 8 redundant places. [2022-01-19 05:18:14,678 INFO L242 Difference]: Finished difference. Result has 1027 places, 1715 transitions, 70846 flow [2022-01-19 05:18:14,679 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=67574, PETRI_DIFFERENCE_MINUEND_PLACES=998, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=579, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1085, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=70846, PETRI_PLACES=1027, PETRI_TRANSITIONS=1715} [2022-01-19 05:18:14,680 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 855 predicate places. [2022-01-19 05:18:14,680 INFO L470 AbstractCegarLoop]: Abstraction has has 1027 places, 1715 transitions, 70846 flow [2022-01-19 05:18:14,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:18:14,680 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:18:14,681 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:18:14,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-19 05:18:14,681 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-19 05:18:14,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:18:14,681 INFO L85 PathProgramCache]: Analyzing trace with hash 419014047, now seen corresponding path program 41 times [2022-01-19 05:18:14,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:18:14,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151269842] [2022-01-19 05:18:14,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:18:14,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:18:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat