/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-exp-term-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 12:58:03,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 12:58:03,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 12:58:03,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 12:58:03,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 12:58:03,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 12:58:03,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 12:58:03,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 12:58:03,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 12:58:03,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 12:58:03,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 12:58:03,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 12:58:03,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 12:58:03,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 12:58:03,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 12:58:03,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 12:58:03,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 12:58:03,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 12:58:03,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 12:58:03,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 12:58:03,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 12:58:03,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 12:58:03,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 12:58:03,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 12:58:03,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 12:58:03,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 12:58:03,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 12:58:03,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 12:58:03,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 12:58:03,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 12:58:03,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 12:58:03,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 12:58:03,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 12:58:03,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 12:58:03,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 12:58:03,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 12:58:03,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 12:58:03,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 12:58:03,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 12:58:03,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 12:58:03,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 12:58:03,453 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-After.epf [2022-01-19 12:58:03,485 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 12:58:03,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 12:58:03,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 12:58:03,486 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 12:58:03,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 12:58:03,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 12:58:03,487 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 12:58:03,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 12:58:03,487 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 12:58:03,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 12:58:03,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 12:58:03,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 12:58:03,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 12:58:03,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 12:58:03,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 12:58:03,489 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 12:58:03,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 12:58:03,489 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 12:58:03,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 12:58:03,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 12:58:03,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 12:58:03,490 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 12:58:03,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 12:58:03,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 12:58:03,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 12:58:03,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 12:58:03,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 12:58:03,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 12:58:03,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 12:58:03,492 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 12:58:03,492 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 12:58:03,492 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 12:58:03,492 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 12:58:03,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 12:58:03,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 12:58:03,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 12:58:03,729 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 12:58:03,731 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 12:58:03,732 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-exp-term-symm.wvr.c [2022-01-19 12:58:03,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50ca6e4f7/c26951f03132431296d786416005ce70/FLAG5bc9991cb [2022-01-19 12:58:04,184 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 12:58:04,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-exp-term-symm.wvr.c [2022-01-19 12:58:04,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50ca6e4f7/c26951f03132431296d786416005ce70/FLAG5bc9991cb [2022-01-19 12:58:04,205 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50ca6e4f7/c26951f03132431296d786416005ce70 [2022-01-19 12:58:04,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 12:58:04,210 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 12:58:04,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 12:58:04,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 12:58:04,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 12:58:04,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:58:04" (1/1) ... [2022-01-19 12:58:04,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@378e425d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:58:04, skipping insertion in model container [2022-01-19 12:58:04,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:58:04" (1/1) ... [2022-01-19 12:58:04,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 12:58:04,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 12:58:04,440 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2022-01-19 12:58:04,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 12:58:04,450 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 12:58:04,467 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2022-01-19 12:58:04,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 12:58:04,478 INFO L208 MainTranslator]: Completed translation [2022-01-19 12:58:04,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:58:04 WrapperNode [2022-01-19 12:58:04,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 12:58:04,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 12:58:04,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 12:58:04,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 12:58:04,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:58:04" (1/1) ... [2022-01-19 12:58:04,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:58:04" (1/1) ... [2022-01-19 12:58:04,510 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 128 [2022-01-19 12:58:04,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 12:58:04,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 12:58:04,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 12:58:04,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 12:58:04,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:58:04" (1/1) ... [2022-01-19 12:58:04,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:58:04" (1/1) ... [2022-01-19 12:58:04,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:58:04" (1/1) ... [2022-01-19 12:58:04,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:58:04" (1/1) ... [2022-01-19 12:58:04,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:58:04" (1/1) ... [2022-01-19 12:58:04,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:58:04" (1/1) ... [2022-01-19 12:58:04,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:58:04" (1/1) ... [2022-01-19 12:58:04,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 12:58:04,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 12:58:04,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 12:58:04,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 12:58:04,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:58:04" (1/1) ... [2022-01-19 12:58:04,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 12:58:04,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 12:58:04,558 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 12:58:04,580 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 12:58:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 12:58:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 12:58:04,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 12:58:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 12:58:04,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 12:58:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 12:58:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 12:58:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 12:58:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 12:58:04,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 12:58:04,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 12:58:04,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 12:58:04,598 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 12:58:04,683 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 12:58:04,684 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 12:58:04,923 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 12:58:04,932 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 12:58:04,932 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 12:58:04,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:58:04 BoogieIcfgContainer [2022-01-19 12:58:04,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 12:58:04,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 12:58:04,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 12:58:04,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 12:58:04,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 12:58:04" (1/3) ... [2022-01-19 12:58:04,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@865a94a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:58:04, skipping insertion in model container [2022-01-19 12:58:04,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:58:04" (2/3) ... [2022-01-19 12:58:04,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@865a94a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:58:04, skipping insertion in model container [2022-01-19 12:58:04,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:58:04" (3/3) ... [2022-01-19 12:58:04,941 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-exp-term-symm.wvr.c [2022-01-19 12:58:04,945 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 12:58:04,945 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 12:58:04,945 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 12:58:04,982 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,982 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,982 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,982 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,983 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,983 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,983 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,983 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,983 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,984 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,984 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,984 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,984 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,984 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,984 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,984 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,984 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,985 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,985 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,985 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,985 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,985 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,985 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,985 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,986 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,986 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,986 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,986 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,986 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,986 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,986 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,986 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,987 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,987 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,987 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,987 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,987 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,987 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,987 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,988 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,988 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,988 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,988 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,988 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,988 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,988 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,988 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,989 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,989 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,989 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,989 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,989 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,990 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,990 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,990 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,990 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,990 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,990 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,991 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,991 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,991 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,991 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,991 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,991 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,992 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,992 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,992 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,992 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,993 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,993 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,993 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,993 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,993 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,993 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,993 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,994 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,994 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,994 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,994 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,994 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,994 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,995 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,995 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,998 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,998 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,998 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,998 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,998 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,999 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:04,999 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,000 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,000 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,000 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,000 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,002 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,002 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,002 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,002 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,002 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,003 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,003 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,003 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,003 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,003 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,004 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,004 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,004 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,004 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,004 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,004 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,004 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,005 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,005 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,005 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,005 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,005 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,005 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,005 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,006 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,006 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,006 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,006 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,006 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,006 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,006 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,006 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,007 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,007 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,007 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,007 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,007 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,007 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,007 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,008 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,008 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,008 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,008 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,008 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,008 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,008 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,008 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,009 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,009 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,009 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,009 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,009 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,010 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,010 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,010 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,010 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,010 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,011 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,011 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,011 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,011 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,011 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,012 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,012 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,012 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,012 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,012 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,012 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,013 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,013 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,013 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,013 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,014 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,014 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,014 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,014 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,014 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,014 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,015 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,015 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,015 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,015 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,015 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,015 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,016 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,016 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,016 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,016 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,017 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,017 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,017 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,018 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,018 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,018 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,020 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,020 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,021 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,021 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,021 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,021 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,021 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,021 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,021 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,021 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,022 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,022 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,022 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,024 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,024 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,024 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,024 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,024 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,024 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,025 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,025 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,025 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,025 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,025 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,025 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,025 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:58:05,028 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 12:58:05,065 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 12:58:05,070 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 12:58:05,071 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 12:58:05,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 168 places, 174 transitions, 364 flow [2022-01-19 12:58:05,133 INFO L129 PetriNetUnfolder]: 13/172 cut-off events. [2022-01-19 12:58:05,133 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 12:58:05,137 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 172 events. 13/172 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 283 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-01-19 12:58:05,138 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 174 transitions, 364 flow [2022-01-19 12:58:05,143 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 163 transitions, 338 flow [2022-01-19 12:58:05,172 INFO L129 PetriNetUnfolder]: 13/162 cut-off events. [2022-01-19 12:58:05,172 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 12:58:05,172 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:05,173 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 12:58:05,173 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:05,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:05,178 INFO L85 PathProgramCache]: Analyzing trace with hash -679452967, now seen corresponding path program 1 times [2022-01-19 12:58:05,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:05,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971965499] [2022-01-19 12:58:05,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:05,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:05,620 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 12:58:05,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:05,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971965499] [2022-01-19 12:58:05,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971965499] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:05,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:05,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 12:58:05,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820751122] [2022-01-19 12:58:05,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:05,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 12:58:05,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:05,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 12:58:05,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 12:58:05,667 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 174 [2022-01-19 12:58:05,675 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 163 transitions, 338 flow. Second operand has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:05,675 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:05,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 174 [2022-01-19 12:58:05,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:05,983 INFO L129 PetriNetUnfolder]: 58/423 cut-off events. [2022-01-19 12:58:05,983 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-01-19 12:58:05,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 621 conditions, 423 events. 58/423 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1990 event pairs, 12 based on Foata normal form. 24/420 useless extension candidates. Maximal degree in co-relation 377. Up to 44 conditions per place. [2022-01-19 12:58:05,991 INFO L132 encePairwiseOnDemand]: 154/174 looper letters, 52 selfloop transitions, 10 changer transitions 34/223 dead transitions. [2022-01-19 12:58:05,991 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 223 transitions, 677 flow [2022-01-19 12:58:05,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 12:58:05,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 12:58:06,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2175 transitions. [2022-01-19 12:58:06,013 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-01-19 12:58:06,014 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2175 transitions. [2022-01-19 12:58:06,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2175 transitions. [2022-01-19 12:58:06,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:06,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2175 transitions. [2022-01-19 12:58:06,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 145.0) internal successors, (2175), 15 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:06,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 174.0) internal successors, (2784), 16 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:06,040 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 174.0) internal successors, (2784), 16 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:06,042 INFO L186 Difference]: Start difference. First operand has 157 places, 163 transitions, 338 flow. Second operand 15 states and 2175 transitions. [2022-01-19 12:58:06,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 223 transitions, 677 flow [2022-01-19 12:58:06,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 223 transitions, 651 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 12:58:06,056 INFO L242 Difference]: Finished difference. Result has 177 places, 161 transitions, 389 flow [2022-01-19 12:58:06,058 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=389, PETRI_PLACES=177, PETRI_TRANSITIONS=161} [2022-01-19 12:58:06,064 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 20 predicate places. [2022-01-19 12:58:06,064 INFO L470 AbstractCegarLoop]: Abstraction has has 177 places, 161 transitions, 389 flow [2022-01-19 12:58:06,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:06,066 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:06,066 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 12:58:06,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 12:58:06,066 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:06,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:06,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1258678119, now seen corresponding path program 1 times [2022-01-19 12:58:06,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:06,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984156695] [2022-01-19 12:58:06,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:06,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:06,231 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 12:58:06,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:06,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984156695] [2022-01-19 12:58:06,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984156695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:06,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:06,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 12:58:06,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611749619] [2022-01-19 12:58:06,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:06,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 12:58:06,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:06,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 12:58:06,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-19 12:58:06,237 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-01-19 12:58:06,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 161 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:06,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:06,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-01-19 12:58:06,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:06,409 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([405] L44-17-->L44-18: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite4#1_3|) InVars {thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} AuxVars[] AssignedVars[~result_4~0][55], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 45#L44-18true, 212#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)]) [2022-01-19 12:58:06,409 INFO L384 tUnfolder$Statistics]: this new event has 77 ancestors and is cut-off event [2022-01-19 12:58:06,410 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2022-01-19 12:58:06,410 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is cut-off event [2022-01-19 12:58:06,410 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2022-01-19 12:58:06,412 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][114], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 45#L44-18true, 212#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)]) [2022-01-19 12:58:06,412 INFO L384 tUnfolder$Statistics]: this new event has 77 ancestors and is cut-off event [2022-01-19 12:58:06,412 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2022-01-19 12:58:06,412 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2022-01-19 12:58:06,412 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is cut-off event [2022-01-19 12:58:06,413 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([405] L44-17-->L44-18: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite4#1_3|) InVars {thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} AuxVars[] AssignedVars[~result_4~0][55], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 45#L44-18true, 212#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)]) [2022-01-19 12:58:06,413 INFO L384 tUnfolder$Statistics]: this new event has 75 ancestors and is cut-off event [2022-01-19 12:58:06,413 INFO L387 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2022-01-19 12:58:06,413 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2022-01-19 12:58:06,413 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is cut-off event [2022-01-19 12:58:06,414 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2022-01-19 12:58:06,415 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][114], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), 149#L44-19true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 212#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)]) [2022-01-19 12:58:06,415 INFO L384 tUnfolder$Statistics]: this new event has 78 ancestors and is cut-off event [2022-01-19 12:58:06,415 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2022-01-19 12:58:06,415 INFO L387 tUnfolder$Statistics]: existing Event has 56 ancestors and is cut-off event [2022-01-19 12:58:06,415 INFO L387 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2022-01-19 12:58:06,416 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][114], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 45#L44-18true, 212#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)]) [2022-01-19 12:58:06,416 INFO L384 tUnfolder$Statistics]: this new event has 75 ancestors and is cut-off event [2022-01-19 12:58:06,416 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2022-01-19 12:58:06,416 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2022-01-19 12:58:06,417 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is cut-off event [2022-01-19 12:58:06,417 INFO L387 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2022-01-19 12:58:06,422 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][114], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, 149#L44-19true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 212#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)]) [2022-01-19 12:58:06,422 INFO L384 tUnfolder$Statistics]: this new event has 76 ancestors and is cut-off event [2022-01-19 12:58:06,422 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2022-01-19 12:58:06,422 INFO L387 tUnfolder$Statistics]: existing Event has 56 ancestors and is cut-off event [2022-01-19 12:58:06,422 INFO L387 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2022-01-19 12:58:06,423 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-01-19 12:58:06,442 INFO L129 PetriNetUnfolder]: 107/1061 cut-off events. [2022-01-19 12:58:06,443 INFO L130 PetriNetUnfolder]: For 300/315 co-relation queries the response was YES. [2022-01-19 12:58:06,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 1061 events. 107/1061 cut-off events. For 300/315 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8010 event pairs, 17 based on Foata normal form. 6/964 useless extension candidates. Maximal degree in co-relation 1533. Up to 89 conditions per place. [2022-01-19 12:58:06,450 INFO L132 encePairwiseOnDemand]: 162/174 looper letters, 31 selfloop transitions, 12 changer transitions 1/185 dead transitions. [2022-01-19 12:58:06,450 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 185 transitions, 531 flow [2022-01-19 12:58:06,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 12:58:06,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 12:58:06,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 630 transitions. [2022-01-19 12:58:06,452 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9051724137931034 [2022-01-19 12:58:06,452 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 630 transitions. [2022-01-19 12:58:06,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 630 transitions. [2022-01-19 12:58:06,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:06,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 630 transitions. [2022-01-19 12:58:06,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:06,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:06,463 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:06,464 INFO L186 Difference]: Start difference. First operand has 177 places, 161 transitions, 389 flow. Second operand 4 states and 630 transitions. [2022-01-19 12:58:06,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 185 transitions, 531 flow [2022-01-19 12:58:06,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 185 transitions, 520 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-01-19 12:58:06,475 INFO L242 Difference]: Finished difference. Result has 168 places, 171 transitions, 466 flow [2022-01-19 12:58:06,476 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=466, PETRI_PLACES=168, PETRI_TRANSITIONS=171} [2022-01-19 12:58:06,476 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 11 predicate places. [2022-01-19 12:58:06,476 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 171 transitions, 466 flow [2022-01-19 12:58:06,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:06,477 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:06,477 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] [2022-01-19 12:58:06,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 12:58:06,478 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:06,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:06,479 INFO L85 PathProgramCache]: Analyzing trace with hash 405844717, now seen corresponding path program 2 times [2022-01-19 12:58:06,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:06,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256115269] [2022-01-19 12:58:06,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:06,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:06,610 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 12:58:06,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:06,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256115269] [2022-01-19 12:58:06,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256115269] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:06,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:06,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 12:58:06,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515349667] [2022-01-19 12:58:06,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:06,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 12:58:06,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:06,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 12:58:06,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-19 12:58:06,616 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-01-19 12:58:06,617 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 171 transitions, 466 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:06,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:06,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-01-19 12:58:06,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:06,805 INFO L129 PetriNetUnfolder]: 91/972 cut-off events. [2022-01-19 12:58:06,805 INFO L130 PetriNetUnfolder]: For 263/282 co-relation queries the response was YES. [2022-01-19 12:58:06,809 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1495 conditions, 972 events. 91/972 cut-off events. For 263/282 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7097 event pairs, 25 based on Foata normal form. 12/929 useless extension candidates. Maximal degree in co-relation 1251. Up to 106 conditions per place. [2022-01-19 12:58:06,811 INFO L132 encePairwiseOnDemand]: 163/174 looper letters, 37 selfloop transitions, 8 changer transitions 3/189 dead transitions. [2022-01-19 12:58:06,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 189 transitions, 634 flow [2022-01-19 12:58:06,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 12:58:06,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 12:58:06,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2022-01-19 12:58:06,813 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.896551724137931 [2022-01-19 12:58:06,814 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2022-01-19 12:58:06,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2022-01-19 12:58:06,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:06,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2022-01-19 12:58:06,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:06,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:06,818 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:06,819 INFO L186 Difference]: Start difference. First operand has 168 places, 171 transitions, 466 flow. Second operand 4 states and 624 transitions. [2022-01-19 12:58:06,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 189 transitions, 634 flow [2022-01-19 12:58:06,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 189 transitions, 634 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 12:58:06,827 INFO L242 Difference]: Finished difference. Result has 174 places, 176 transitions, 540 flow [2022-01-19 12:58:06,828 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=540, PETRI_PLACES=174, PETRI_TRANSITIONS=176} [2022-01-19 12:58:06,830 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 17 predicate places. [2022-01-19 12:58:06,830 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 176 transitions, 540 flow [2022-01-19 12:58:06,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:06,830 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:06,831 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 12:58:06,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 12:58:06,831 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:06,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:06,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1435280407, now seen corresponding path program 1 times [2022-01-19 12:58:06,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:06,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106178876] [2022-01-19 12:58:06,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:06,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:06,943 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 12:58:06,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:06,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106178876] [2022-01-19 12:58:06,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106178876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:06,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:06,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 12:58:06,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959710452] [2022-01-19 12:58:06,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:06,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 12:58:06,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:06,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 12:58:06,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-19 12:58:06,950 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-01-19 12:58:06,950 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 176 transitions, 540 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:06,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:06,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-01-19 12:58:06,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:07,120 INFO L129 PetriNetUnfolder]: 92/1151 cut-off events. [2022-01-19 12:58:07,120 INFO L130 PetriNetUnfolder]: For 422/443 co-relation queries the response was YES. [2022-01-19 12:58:07,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1817 conditions, 1151 events. 92/1151 cut-off events. For 422/443 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 8351 event pairs, 20 based on Foata normal form. 9/1104 useless extension candidates. Maximal degree in co-relation 1503. Up to 71 conditions per place. [2022-01-19 12:58:07,129 INFO L132 encePairwiseOnDemand]: 164/174 looper letters, 41 selfloop transitions, 11 changer transitions 3/196 dead transitions. [2022-01-19 12:58:07,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 196 transitions, 738 flow [2022-01-19 12:58:07,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 12:58:07,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 12:58:07,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 626 transitions. [2022-01-19 12:58:07,131 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8994252873563219 [2022-01-19 12:58:07,131 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 626 transitions. [2022-01-19 12:58:07,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 626 transitions. [2022-01-19 12:58:07,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:07,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 626 transitions. [2022-01-19 12:58:07,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.5) internal successors, (626), 4 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:07,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:07,135 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:07,135 INFO L186 Difference]: Start difference. First operand has 174 places, 176 transitions, 540 flow. Second operand 4 states and 626 transitions. [2022-01-19 12:58:07,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 196 transitions, 738 flow [2022-01-19 12:58:07,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 196 transitions, 738 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 12:58:07,141 INFO L242 Difference]: Finished difference. Result has 179 places, 179 transitions, 602 flow [2022-01-19 12:58:07,142 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=602, PETRI_PLACES=179, PETRI_TRANSITIONS=179} [2022-01-19 12:58:07,143 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 22 predicate places. [2022-01-19 12:58:07,143 INFO L470 AbstractCegarLoop]: Abstraction has has 179 places, 179 transitions, 602 flow [2022-01-19 12:58:07,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:07,144 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:07,144 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] [2022-01-19 12:58:07,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 12:58:07,144 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:07,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:07,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1986427037, now seen corresponding path program 2 times [2022-01-19 12:58:07,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:07,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520399088] [2022-01-19 12:58:07,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:07,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:07,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:58:07,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:07,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520399088] [2022-01-19 12:58:07,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520399088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:07,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:07,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 12:58:07,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836873674] [2022-01-19 12:58:07,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:07,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 12:58:07,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:07,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 12:58:07,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-19 12:58:07,211 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-01-19 12:58:07,212 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 179 transitions, 602 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:07,212 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:07,212 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-01-19 12:58:07,212 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:07,359 INFO L129 PetriNetUnfolder]: 87/1121 cut-off events. [2022-01-19 12:58:07,360 INFO L130 PetriNetUnfolder]: For 611/629 co-relation queries the response was YES. [2022-01-19 12:58:07,363 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1844 conditions, 1121 events. 87/1121 cut-off events. For 611/629 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 7928 event pairs, 26 based on Foata normal form. 13/1084 useless extension candidates. Maximal degree in co-relation 1551. Up to 91 conditions per place. [2022-01-19 12:58:07,367 INFO L132 encePairwiseOnDemand]: 163/174 looper letters, 42 selfloop transitions, 13 changer transitions 3/199 dead transitions. [2022-01-19 12:58:07,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 199 transitions, 826 flow [2022-01-19 12:58:07,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 12:58:07,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 12:58:07,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2022-01-19 12:58:07,369 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.896551724137931 [2022-01-19 12:58:07,369 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2022-01-19 12:58:07,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2022-01-19 12:58:07,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:07,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2022-01-19 12:58:07,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:07,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:07,373 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:07,373 INFO L186 Difference]: Start difference. First operand has 179 places, 179 transitions, 602 flow. Second operand 4 states and 624 transitions. [2022-01-19 12:58:07,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 199 transitions, 826 flow [2022-01-19 12:58:07,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 199 transitions, 820 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 12:58:07,380 INFO L242 Difference]: Finished difference. Result has 183 places, 185 transitions, 698 flow [2022-01-19 12:58:07,380 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=698, PETRI_PLACES=183, PETRI_TRANSITIONS=185} [2022-01-19 12:58:07,383 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 26 predicate places. [2022-01-19 12:58:07,383 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 185 transitions, 698 flow [2022-01-19 12:58:07,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:07,384 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:07,384 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] [2022-01-19 12:58:07,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 12:58:07,384 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:07,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:07,385 INFO L85 PathProgramCache]: Analyzing trace with hash 172723029, now seen corresponding path program 3 times [2022-01-19 12:58:07,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:07,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111110847] [2022-01-19 12:58:07,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:07,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:07,457 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 12:58:07,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:07,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111110847] [2022-01-19 12:58:07,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111110847] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:07,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:07,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 12:58:07,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609850242] [2022-01-19 12:58:07,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:07,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 12:58:07,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:07,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 12:58:07,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-19 12:58:07,460 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-01-19 12:58:07,461 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 185 transitions, 698 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:07,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:07,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-01-19 12:58:07,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:07,622 INFO L129 PetriNetUnfolder]: 77/1089 cut-off events. [2022-01-19 12:58:07,623 INFO L130 PetriNetUnfolder]: For 686/698 co-relation queries the response was YES. [2022-01-19 12:58:07,626 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1803 conditions, 1089 events. 77/1089 cut-off events. For 686/698 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 7531 event pairs, 22 based on Foata normal form. 9/1046 useless extension candidates. Maximal degree in co-relation 1530. Up to 91 conditions per place. [2022-01-19 12:58:07,629 INFO L132 encePairwiseOnDemand]: 162/174 looper letters, 40 selfloop transitions, 16 changer transitions 3/200 dead transitions. [2022-01-19 12:58:07,629 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 200 transitions, 888 flow [2022-01-19 12:58:07,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 12:58:07,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 12:58:07,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2022-01-19 12:58:07,632 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.896551724137931 [2022-01-19 12:58:07,632 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2022-01-19 12:58:07,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2022-01-19 12:58:07,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:07,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2022-01-19 12:58:07,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:07,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:07,635 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:07,636 INFO L186 Difference]: Start difference. First operand has 183 places, 185 transitions, 698 flow. Second operand 4 states and 624 transitions. [2022-01-19 12:58:07,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 200 transitions, 888 flow [2022-01-19 12:58:07,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 200 transitions, 864 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 12:58:07,643 INFO L242 Difference]: Finished difference. Result has 185 places, 188 transitions, 759 flow [2022-01-19 12:58:07,643 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=759, PETRI_PLACES=185, PETRI_TRANSITIONS=188} [2022-01-19 12:58:07,645 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 28 predicate places. [2022-01-19 12:58:07,645 INFO L470 AbstractCegarLoop]: Abstraction has has 185 places, 188 transitions, 759 flow [2022-01-19 12:58:07,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:07,646 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:07,646 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] [2022-01-19 12:58:07,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 12:58:07,646 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:07,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:07,647 INFO L85 PathProgramCache]: Analyzing trace with hash -958876555, now seen corresponding path program 3 times [2022-01-19 12:58:07,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:07,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103090082] [2022-01-19 12:58:07,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:07,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:07,711 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 12:58:07,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:07,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103090082] [2022-01-19 12:58:07,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103090082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:07,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:07,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 12:58:07,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992227915] [2022-01-19 12:58:07,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:07,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 12:58:07,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:07,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 12:58:07,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 12:58:07,717 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-01-19 12:58:07,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 188 transitions, 759 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:07,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:07,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-01-19 12:58:07,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:07,907 INFO L129 PetriNetUnfolder]: 70/1026 cut-off events. [2022-01-19 12:58:07,908 INFO L130 PetriNetUnfolder]: For 709/718 co-relation queries the response was YES. [2022-01-19 12:58:07,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1737 conditions, 1026 events. 70/1026 cut-off events. For 709/718 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6946 event pairs, 24 based on Foata normal form. 5/984 useless extension candidates. Maximal degree in co-relation 1504. Up to 53 conditions per place. [2022-01-19 12:58:07,915 INFO L132 encePairwiseOnDemand]: 161/174 looper letters, 45 selfloop transitions, 21 changer transitions 5/210 dead transitions. [2022-01-19 12:58:07,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 210 transitions, 998 flow [2022-01-19 12:58:07,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 12:58:07,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 12:58:07,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 782 transitions. [2022-01-19 12:58:07,918 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8988505747126436 [2022-01-19 12:58:07,918 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 782 transitions. [2022-01-19 12:58:07,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 782 transitions. [2022-01-19 12:58:07,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:07,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 782 transitions. [2022-01-19 12:58:07,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.4) internal successors, (782), 5 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:07,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:07,922 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:07,922 INFO L186 Difference]: Start difference. First operand has 185 places, 188 transitions, 759 flow. Second operand 5 states and 782 transitions. [2022-01-19 12:58:07,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 210 transitions, 998 flow [2022-01-19 12:58:07,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 210 transitions, 981 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 12:58:07,931 INFO L242 Difference]: Finished difference. Result has 191 places, 192 transitions, 870 flow [2022-01-19 12:58:07,932 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=870, PETRI_PLACES=191, PETRI_TRANSITIONS=192} [2022-01-19 12:58:07,933 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 34 predicate places. [2022-01-19 12:58:07,933 INFO L470 AbstractCegarLoop]: Abstraction has has 191 places, 192 transitions, 870 flow [2022-01-19 12:58:07,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:07,933 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:07,933 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] [2022-01-19 12:58:07,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 12:58:07,934 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:07,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:07,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1796086946, now seen corresponding path program 1 times [2022-01-19 12:58:07,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:07,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023639913] [2022-01-19 12:58:07,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:07,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:08,092 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 12:58:08,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:08,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023639913] [2022-01-19 12:58:08,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023639913] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:08,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:08,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:08,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729316433] [2022-01-19 12:58:08,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:08,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:08,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:08,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:08,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:08,096 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:08,099 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 192 transitions, 870 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:08,099 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:08,099 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:08,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:08,812 INFO L129 PetriNetUnfolder]: 307/1623 cut-off events. [2022-01-19 12:58:08,812 INFO L130 PetriNetUnfolder]: For 1109/1179 co-relation queries the response was YES. [2022-01-19 12:58:08,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3320 conditions, 1623 events. 307/1623 cut-off events. For 1109/1179 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12415 event pairs, 211 based on Foata normal form. 1/1567 useless extension candidates. Maximal degree in co-relation 2952. Up to 676 conditions per place. [2022-01-19 12:58:08,825 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 90 selfloop transitions, 7 changer transitions 52/298 dead transitions. [2022-01-19 12:58:08,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 298 transitions, 1513 flow [2022-01-19 12:58:08,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-19 12:58:08,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-01-19 12:58:08,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4110 transitions. [2022-01-19 12:58:08,833 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619577308120133 [2022-01-19 12:58:08,834 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4110 transitions. [2022-01-19 12:58:08,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4110 transitions. [2022-01-19 12:58:08,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:08,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4110 transitions. [2022-01-19 12:58:08,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 132.58064516129033) internal successors, (4110), 31 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:08,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:08,855 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:08,855 INFO L186 Difference]: Start difference. First operand has 191 places, 192 transitions, 870 flow. Second operand 31 states and 4110 transitions. [2022-01-19 12:58:08,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 298 transitions, 1513 flow [2022-01-19 12:58:08,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 298 transitions, 1499 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-01-19 12:58:08,867 INFO L242 Difference]: Finished difference. Result has 247 places, 198 transitions, 991 flow [2022-01-19 12:58:08,868 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=991, PETRI_PLACES=247, PETRI_TRANSITIONS=198} [2022-01-19 12:58:08,869 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 90 predicate places. [2022-01-19 12:58:08,870 INFO L470 AbstractCegarLoop]: Abstraction has has 247 places, 198 transitions, 991 flow [2022-01-19 12:58:08,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:08,870 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:08,871 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] [2022-01-19 12:58:08,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 12:58:08,871 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:08,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:08,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1337300728, now seen corresponding path program 2 times [2022-01-19 12:58:08,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:08,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975307265] [2022-01-19 12:58:08,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:08,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:08,999 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 12:58:09,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:09,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975307265] [2022-01-19 12:58:09,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975307265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:09,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:09,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:09,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675925339] [2022-01-19 12:58:09,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:09,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:09,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:09,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:09,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:09,003 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:09,004 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 198 transitions, 991 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:09,004 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:09,004 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:09,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:09,587 INFO L129 PetriNetUnfolder]: 321/1674 cut-off events. [2022-01-19 12:58:09,587 INFO L130 PetriNetUnfolder]: For 6457/6527 co-relation queries the response was YES. [2022-01-19 12:58:09,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5545 conditions, 1674 events. 321/1674 cut-off events. For 6457/6527 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12862 event pairs, 220 based on Foata normal form. 1/1616 useless extension candidates. Maximal degree in co-relation 5389. Up to 718 conditions per place. [2022-01-19 12:58:09,607 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 74 selfloop transitions, 12 changer transitions 39/274 dead transitions. [2022-01-19 12:58:09,608 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 274 transitions, 1864 flow [2022-01-19 12:58:09,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-19 12:58:09,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-19 12:58:09,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3446 transitions. [2022-01-19 12:58:09,615 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617152961980548 [2022-01-19 12:58:09,615 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3446 transitions. [2022-01-19 12:58:09,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3446 transitions. [2022-01-19 12:58:09,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:09,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3446 transitions. [2022-01-19 12:58:09,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.53846153846155) internal successors, (3446), 26 states have internal predecessors, (3446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:09,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:09,630 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:09,630 INFO L186 Difference]: Start difference. First operand has 247 places, 198 transitions, 991 flow. Second operand 26 states and 3446 transitions. [2022-01-19 12:58:09,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 274 transitions, 1864 flow [2022-01-19 12:58:09,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 274 transitions, 1743 flow, removed 60 selfloop flow, removed 12 redundant places. [2022-01-19 12:58:09,660 INFO L242 Difference]: Finished difference. Result has 261 places, 208 transitions, 1147 flow [2022-01-19 12:58:09,660 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1147, PETRI_PLACES=261, PETRI_TRANSITIONS=208} [2022-01-19 12:58:09,661 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 104 predicate places. [2022-01-19 12:58:09,661 INFO L470 AbstractCegarLoop]: Abstraction has has 261 places, 208 transitions, 1147 flow [2022-01-19 12:58:09,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:09,662 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:09,662 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] [2022-01-19 12:58:09,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 12:58:09,662 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:09,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:09,663 INFO L85 PathProgramCache]: Analyzing trace with hash 672767696, now seen corresponding path program 3 times [2022-01-19 12:58:09,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:09,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764753007] [2022-01-19 12:58:09,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:09,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:09,779 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 12:58:09,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:09,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764753007] [2022-01-19 12:58:09,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764753007] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:09,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:09,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:09,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296280808] [2022-01-19 12:58:09,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:09,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:09,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:09,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:09,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:09,787 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:09,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 208 transitions, 1147 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:09,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:09,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:09,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:10,392 INFO L129 PetriNetUnfolder]: 322/1704 cut-off events. [2022-01-19 12:58:10,392 INFO L130 PetriNetUnfolder]: For 10856/10928 co-relation queries the response was YES. [2022-01-19 12:58:10,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6358 conditions, 1704 events. 322/1704 cut-off events. For 10856/10928 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13181 event pairs, 231 based on Foata normal form. 1/1645 useless extension candidates. Maximal degree in co-relation 6190. Up to 732 conditions per place. [2022-01-19 12:58:10,411 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 83 selfloop transitions, 18 changer transitions 40/290 dead transitions. [2022-01-19 12:58:10,412 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 290 transitions, 2504 flow [2022-01-19 12:58:10,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-19 12:58:10,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-01-19 12:58:10,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3319 transitions. [2022-01-19 12:58:10,420 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629885057471264 [2022-01-19 12:58:10,420 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3319 transitions. [2022-01-19 12:58:10,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3319 transitions. [2022-01-19 12:58:10,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:10,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3319 transitions. [2022-01-19 12:58:10,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 132.76) internal successors, (3319), 25 states have internal predecessors, (3319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:10,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:10,436 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:10,436 INFO L186 Difference]: Start difference. First operand has 261 places, 208 transitions, 1147 flow. Second operand 25 states and 3319 transitions. [2022-01-19 12:58:10,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 290 transitions, 2504 flow [2022-01-19 12:58:10,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 290 transitions, 2291 flow, removed 100 selfloop flow, removed 12 redundant places. [2022-01-19 12:58:10,483 INFO L242 Difference]: Finished difference. Result has 277 places, 223 transitions, 1423 flow [2022-01-19 12:58:10,483 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1423, PETRI_PLACES=277, PETRI_TRANSITIONS=223} [2022-01-19 12:58:10,484 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 120 predicate places. [2022-01-19 12:58:10,484 INFO L470 AbstractCegarLoop]: Abstraction has has 277 places, 223 transitions, 1423 flow [2022-01-19 12:58:10,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:10,485 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:10,485 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] [2022-01-19 12:58:10,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 12:58:10,485 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:10,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:10,485 INFO L85 PathProgramCache]: Analyzing trace with hash 805415252, now seen corresponding path program 4 times [2022-01-19 12:58:10,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:10,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008104217] [2022-01-19 12:58:10,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:10,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:10,592 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 12:58:10,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:10,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008104217] [2022-01-19 12:58:10,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008104217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:10,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:10,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:10,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644658571] [2022-01-19 12:58:10,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:10,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:10,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:10,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:10,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:10,596 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:10,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 223 transitions, 1423 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:10,597 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:10,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:10,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:11,270 INFO L129 PetriNetUnfolder]: 319/1719 cut-off events. [2022-01-19 12:58:11,270 INFO L130 PetriNetUnfolder]: For 14794/14868 co-relation queries the response was YES. [2022-01-19 12:58:11,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6996 conditions, 1719 events. 319/1719 cut-off events. For 14794/14868 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13506 event pairs, 218 based on Foata normal form. 1/1659 useless extension candidates. Maximal degree in co-relation 6824. Up to 686 conditions per place. [2022-01-19 12:58:11,292 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 117 selfloop transitions, 17 changer transitions 50/333 dead transitions. [2022-01-19 12:58:11,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 333 transitions, 3170 flow [2022-01-19 12:58:11,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 12:58:11,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 12:58:11,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3976 transitions. [2022-01-19 12:58:11,297 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616858237547893 [2022-01-19 12:58:11,298 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3976 transitions. [2022-01-19 12:58:11,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3976 transitions. [2022-01-19 12:58:11,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:11,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3976 transitions. [2022-01-19 12:58:11,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 132.53333333333333) internal successors, (3976), 30 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:11,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 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 12:58:11,312 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 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 12:58:11,312 INFO L186 Difference]: Start difference. First operand has 277 places, 223 transitions, 1423 flow. Second operand 30 states and 3976 transitions. [2022-01-19 12:58:11,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 333 transitions, 3170 flow [2022-01-19 12:58:11,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 333 transitions, 2710 flow, removed 230 selfloop flow, removed 10 redundant places. [2022-01-19 12:58:11,377 INFO L242 Difference]: Finished difference. Result has 308 places, 226 transitions, 1451 flow [2022-01-19 12:58:11,377 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1451, PETRI_PLACES=308, PETRI_TRANSITIONS=226} [2022-01-19 12:58:11,378 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 151 predicate places. [2022-01-19 12:58:11,378 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 226 transitions, 1451 flow [2022-01-19 12:58:11,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:11,379 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:11,379 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] [2022-01-19 12:58:11,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 12:58:11,379 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:11,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:11,379 INFO L85 PathProgramCache]: Analyzing trace with hash 763934422, now seen corresponding path program 5 times [2022-01-19 12:58:11,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:11,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254104975] [2022-01-19 12:58:11,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:11,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:11,503 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 12:58:11,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:11,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254104975] [2022-01-19 12:58:11,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254104975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:11,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:11,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:11,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705125988] [2022-01-19 12:58:11,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:11,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:11,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:11,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:11,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:11,506 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:11,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 226 transitions, 1451 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:11,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:11,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:11,507 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:12,205 INFO L129 PetriNetUnfolder]: 335/1750 cut-off events. [2022-01-19 12:58:12,239 INFO L130 PetriNetUnfolder]: For 16745/16815 co-relation queries the response was YES. [2022-01-19 12:58:12,258 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7360 conditions, 1750 events. 335/1750 cut-off events. For 16745/16815 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13687 event pairs, 224 based on Foata normal form. 1/1688 useless extension candidates. Maximal degree in co-relation 7224. Up to 728 conditions per place. [2022-01-19 12:58:12,267 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 29 changer transitions 41/312 dead transitions. [2022-01-19 12:58:12,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 312 transitions, 2843 flow [2022-01-19 12:58:12,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 12:58:12,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 12:58:12,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3705 transitions. [2022-01-19 12:58:12,272 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604679802955665 [2022-01-19 12:58:12,272 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3705 transitions. [2022-01-19 12:58:12,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3705 transitions. [2022-01-19 12:58:12,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:12,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3705 transitions. [2022-01-19 12:58:12,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.32142857142858) internal successors, (3705), 28 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:12,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:12,286 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:12,286 INFO L186 Difference]: Start difference. First operand has 308 places, 226 transitions, 1451 flow. Second operand 28 states and 3705 transitions. [2022-01-19 12:58:12,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 312 transitions, 2843 flow [2022-01-19 12:58:12,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 312 transitions, 2619 flow, removed 110 selfloop flow, removed 24 redundant places. [2022-01-19 12:58:12,372 INFO L242 Difference]: Finished difference. Result has 306 places, 240 transitions, 1660 flow [2022-01-19 12:58:12,372 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1660, PETRI_PLACES=306, PETRI_TRANSITIONS=240} [2022-01-19 12:58:12,373 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 149 predicate places. [2022-01-19 12:58:12,373 INFO L470 AbstractCegarLoop]: Abstraction has has 306 places, 240 transitions, 1660 flow [2022-01-19 12:58:12,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:12,373 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:12,373 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] [2022-01-19 12:58:12,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 12:58:12,374 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:12,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:12,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1349135860, now seen corresponding path program 6 times [2022-01-19 12:58:12,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:12,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055917194] [2022-01-19 12:58:12,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:12,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:12,513 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 12:58:12,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:12,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055917194] [2022-01-19 12:58:12,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055917194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:12,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:12,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:12,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016611679] [2022-01-19 12:58:12,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:12,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:12,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:12,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:12,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:12,516 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:12,518 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 240 transitions, 1660 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:12,518 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:12,518 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:12,518 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:13,172 INFO L129 PetriNetUnfolder]: 353/1796 cut-off events. [2022-01-19 12:58:13,172 INFO L130 PetriNetUnfolder]: For 13438/13512 co-relation queries the response was YES. [2022-01-19 12:58:13,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7466 conditions, 1796 events. 353/1796 cut-off events. For 13438/13512 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14124 event pairs, 247 based on Foata normal form. 3/1733 useless extension candidates. Maximal degree in co-relation 7274. Up to 742 conditions per place. [2022-01-19 12:58:13,204 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 35 changer transitions 41/318 dead transitions. [2022-01-19 12:58:13,204 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 318 transitions, 3045 flow [2022-01-19 12:58:13,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-19 12:58:13,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-19 12:58:13,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3452 transitions. [2022-01-19 12:58:13,210 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7630415561450045 [2022-01-19 12:58:13,210 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3452 transitions. [2022-01-19 12:58:13,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3452 transitions. [2022-01-19 12:58:13,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:13,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3452 transitions. [2022-01-19 12:58:13,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.76923076923077) internal successors, (3452), 26 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:13,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:13,222 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:13,222 INFO L186 Difference]: Start difference. First operand has 306 places, 240 transitions, 1660 flow. Second operand 26 states and 3452 transitions. [2022-01-19 12:58:13,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 318 transitions, 3045 flow [2022-01-19 12:58:13,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 318 transitions, 2821 flow, removed 103 selfloop flow, removed 18 redundant places. [2022-01-19 12:58:13,308 INFO L242 Difference]: Finished difference. Result has 316 places, 254 transitions, 1929 flow [2022-01-19 12:58:13,308 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1929, PETRI_PLACES=316, PETRI_TRANSITIONS=254} [2022-01-19 12:58:13,309 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 159 predicate places. [2022-01-19 12:58:13,309 INFO L470 AbstractCegarLoop]: Abstraction has has 316 places, 254 transitions, 1929 flow [2022-01-19 12:58:13,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:13,310 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:13,310 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] [2022-01-19 12:58:13,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 12:58:13,310 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:13,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:13,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1491611390, now seen corresponding path program 7 times [2022-01-19 12:58:13,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:13,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028712357] [2022-01-19 12:58:13,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:13,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:13,440 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 12:58:13,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:13,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028712357] [2022-01-19 12:58:13,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028712357] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:13,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:13,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:13,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206801563] [2022-01-19 12:58:13,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:13,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:13,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:13,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:13,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:13,444 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:13,445 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 254 transitions, 1929 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:13,445 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:13,445 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:13,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:14,075 INFO L129 PetriNetUnfolder]: 347/1785 cut-off events. [2022-01-19 12:58:14,076 INFO L130 PetriNetUnfolder]: For 12004/12083 co-relation queries the response was YES. [2022-01-19 12:58:14,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7272 conditions, 1785 events. 347/1785 cut-off events. For 12004/12083 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14085 event pairs, 230 based on Foata normal form. 2/1720 useless extension candidates. Maximal degree in co-relation 7081. Up to 750 conditions per place. [2022-01-19 12:58:14,101 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 104 selfloop transitions, 39 changer transitions 37/329 dead transitions. [2022-01-19 12:58:14,101 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 329 transitions, 3436 flow [2022-01-19 12:58:14,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 12:58:14,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 12:58:14,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2923 transitions. [2022-01-19 12:58:14,105 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635841170323929 [2022-01-19 12:58:14,105 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2923 transitions. [2022-01-19 12:58:14,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2923 transitions. [2022-01-19 12:58:14,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:14,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2923 transitions. [2022-01-19 12:58:14,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.86363636363637) internal successors, (2923), 22 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:14,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:14,114 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:14,114 INFO L186 Difference]: Start difference. First operand has 316 places, 254 transitions, 1929 flow. Second operand 22 states and 2923 transitions. [2022-01-19 12:58:14,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 329 transitions, 3436 flow [2022-01-19 12:58:14,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 329 transitions, 3237 flow, removed 79 selfloop flow, removed 13 redundant places. [2022-01-19 12:58:14,181 INFO L242 Difference]: Finished difference. Result has 324 places, 265 transitions, 2180 flow [2022-01-19 12:58:14,182 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2180, PETRI_PLACES=324, PETRI_TRANSITIONS=265} [2022-01-19 12:58:14,182 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 167 predicate places. [2022-01-19 12:58:14,182 INFO L470 AbstractCegarLoop]: Abstraction has has 324 places, 265 transitions, 2180 flow [2022-01-19 12:58:14,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:14,183 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:14,183 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] [2022-01-19 12:58:14,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 12:58:14,184 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:14,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:14,184 INFO L85 PathProgramCache]: Analyzing trace with hash 184070188, now seen corresponding path program 8 times [2022-01-19 12:58:14,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:14,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465883437] [2022-01-19 12:58:14,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:14,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:14,300 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 12:58:14,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:14,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465883437] [2022-01-19 12:58:14,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465883437] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:14,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:14,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:14,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324242199] [2022-01-19 12:58:14,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:14,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:14,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:14,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:14,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:14,303 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:14,304 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 265 transitions, 2180 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:14,304 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:14,304 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:14,304 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:14,889 INFO L129 PetriNetUnfolder]: 342/1788 cut-off events. [2022-01-19 12:58:14,889 INFO L130 PetriNetUnfolder]: For 12321/12405 co-relation queries the response was YES. [2022-01-19 12:58:14,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7247 conditions, 1788 events. 342/1788 cut-off events. For 12321/12405 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 14084 event pairs, 228 based on Foata normal form. 9/1732 useless extension candidates. Maximal degree in co-relation 7046. Up to 744 conditions per place. [2022-01-19 12:58:14,911 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 45 changer transitions 33/327 dead transitions. [2022-01-19 12:58:14,911 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 327 transitions, 3448 flow [2022-01-19 12:58:14,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 12:58:14,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 12:58:14,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2920 transitions. [2022-01-19 12:58:14,917 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628004179728317 [2022-01-19 12:58:14,917 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2920 transitions. [2022-01-19 12:58:14,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2920 transitions. [2022-01-19 12:58:14,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:14,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2920 transitions. [2022-01-19 12:58:14,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.72727272727272) internal successors, (2920), 22 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:14,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:14,927 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:14,927 INFO L186 Difference]: Start difference. First operand has 324 places, 265 transitions, 2180 flow. Second operand 22 states and 2920 transitions. [2022-01-19 12:58:14,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 327 transitions, 3448 flow [2022-01-19 12:58:14,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 327 transitions, 3203 flow, removed 90 selfloop flow, removed 13 redundant places. [2022-01-19 12:58:15,000 INFO L242 Difference]: Finished difference. Result has 330 places, 272 transitions, 2298 flow [2022-01-19 12:58:15,001 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2031, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2298, PETRI_PLACES=330, PETRI_TRANSITIONS=272} [2022-01-19 12:58:15,001 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 173 predicate places. [2022-01-19 12:58:15,001 INFO L470 AbstractCegarLoop]: Abstraction has has 330 places, 272 transitions, 2298 flow [2022-01-19 12:58:15,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:15,002 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:15,002 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] [2022-01-19 12:58:15,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 12:58:15,002 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:15,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:15,003 INFO L85 PathProgramCache]: Analyzing trace with hash 951772256, now seen corresponding path program 9 times [2022-01-19 12:58:15,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:15,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620794940] [2022-01-19 12:58:15,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:15,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:15,120 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 12:58:15,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:15,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620794940] [2022-01-19 12:58:15,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620794940] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:15,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:15,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:15,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925087650] [2022-01-19 12:58:15,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:15,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:15,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:15,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:15,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:15,126 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:15,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 272 transitions, 2298 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:15,127 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:15,127 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:15,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:15,794 INFO L129 PetriNetUnfolder]: 341/1793 cut-off events. [2022-01-19 12:58:15,794 INFO L130 PetriNetUnfolder]: For 12053/12134 co-relation queries the response was YES. [2022-01-19 12:58:15,818 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7278 conditions, 1793 events. 341/1793 cut-off events. For 12053/12134 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 14175 event pairs, 226 based on Foata normal form. 2/1732 useless extension candidates. Maximal degree in co-relation 7077. Up to 732 conditions per place. [2022-01-19 12:58:15,825 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 109 selfloop transitions, 38 changer transitions 45/341 dead transitions. [2022-01-19 12:58:15,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 341 transitions, 3730 flow [2022-01-19 12:58:15,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 12:58:15,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 12:58:15,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3579 transitions. [2022-01-19 12:58:15,830 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7618135376756067 [2022-01-19 12:58:15,830 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3579 transitions. [2022-01-19 12:58:15,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3579 transitions. [2022-01-19 12:58:15,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:15,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3579 transitions. [2022-01-19 12:58:15,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.55555555555554) internal successors, (3579), 27 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:15,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:15,841 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:15,841 INFO L186 Difference]: Start difference. First operand has 330 places, 272 transitions, 2298 flow. Second operand 27 states and 3579 transitions. [2022-01-19 12:58:15,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 341 transitions, 3730 flow [2022-01-19 12:58:15,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 341 transitions, 3598 flow, removed 57 selfloop flow, removed 6 redundant places. [2022-01-19 12:58:15,936 INFO L242 Difference]: Finished difference. Result has 358 places, 275 transitions, 2444 flow [2022-01-19 12:58:15,937 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2222, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2444, PETRI_PLACES=358, PETRI_TRANSITIONS=275} [2022-01-19 12:58:15,937 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 201 predicate places. [2022-01-19 12:58:15,937 INFO L470 AbstractCegarLoop]: Abstraction has has 358 places, 275 transitions, 2444 flow [2022-01-19 12:58:15,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:15,938 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:15,938 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] [2022-01-19 12:58:15,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 12:58:15,938 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:15,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:15,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1137942998, now seen corresponding path program 10 times [2022-01-19 12:58:15,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:15,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929539030] [2022-01-19 12:58:15,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:15,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:16,043 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 12:58:16,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:16,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929539030] [2022-01-19 12:58:16,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929539030] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:16,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:16,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:16,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097303954] [2022-01-19 12:58:16,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:16,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:16,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:16,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:16,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:16,046 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:16,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 275 transitions, 2444 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:16,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:16,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:16,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:16,491 INFO L129 PetriNetUnfolder]: 323/1726 cut-off events. [2022-01-19 12:58:16,491 INFO L130 PetriNetUnfolder]: For 11676/11750 co-relation queries the response was YES. [2022-01-19 12:58:16,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7039 conditions, 1726 events. 323/1726 cut-off events. For 11676/11750 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 13494 event pairs, 226 based on Foata normal form. 3/1662 useless extension candidates. Maximal degree in co-relation 6878. Up to 736 conditions per place. [2022-01-19 12:58:16,516 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 97 selfloop transitions, 29 changer transitions 38/313 dead transitions. [2022-01-19 12:58:16,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 313 transitions, 3289 flow [2022-01-19 12:58:16,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 12:58:16,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 12:58:16,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2397 transitions. [2022-01-19 12:58:16,519 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7653256704980843 [2022-01-19 12:58:16,519 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2397 transitions. [2022-01-19 12:58:16,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2397 transitions. [2022-01-19 12:58:16,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:16,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2397 transitions. [2022-01-19 12:58:16,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.16666666666666) internal successors, (2397), 18 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:16,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:16,540 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:16,540 INFO L186 Difference]: Start difference. First operand has 358 places, 275 transitions, 2444 flow. Second operand 18 states and 2397 transitions. [2022-01-19 12:58:16,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 313 transitions, 3289 flow [2022-01-19 12:58:16,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 313 transitions, 3101 flow, removed 65 selfloop flow, removed 21 redundant places. [2022-01-19 12:58:16,640 INFO L242 Difference]: Finished difference. Result has 342 places, 255 transitions, 2035 flow [2022-01-19 12:58:16,640 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2310, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2035, PETRI_PLACES=342, PETRI_TRANSITIONS=255} [2022-01-19 12:58:16,641 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 185 predicate places. [2022-01-19 12:58:16,641 INFO L470 AbstractCegarLoop]: Abstraction has has 342 places, 255 transitions, 2035 flow [2022-01-19 12:58:16,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:16,641 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:16,641 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] [2022-01-19 12:58:16,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 12:58:16,642 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:16,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:16,642 INFO L85 PathProgramCache]: Analyzing trace with hash 518182422, now seen corresponding path program 11 times [2022-01-19 12:58:16,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:16,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633819729] [2022-01-19 12:58:16,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:16,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:16,754 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 12:58:16,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:16,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633819729] [2022-01-19 12:58:16,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633819729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:16,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:16,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:16,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132360774] [2022-01-19 12:58:16,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:16,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:16,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:16,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:16,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:16,757 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:16,758 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 255 transitions, 2035 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:16,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:16,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:16,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:17,241 INFO L129 PetriNetUnfolder]: 326/1734 cut-off events. [2022-01-19 12:58:17,242 INFO L130 PetriNetUnfolder]: For 10912/10986 co-relation queries the response was YES. [2022-01-19 12:58:17,256 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6970 conditions, 1734 events. 326/1734 cut-off events. For 10912/10986 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 13593 event pairs, 228 based on Foata normal form. 3/1672 useless extension candidates. Maximal degree in co-relation 6870. Up to 736 conditions per place. [2022-01-19 12:58:17,261 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 92 selfloop transitions, 36 changer transitions 30/307 dead transitions. [2022-01-19 12:58:17,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 307 transitions, 3109 flow [2022-01-19 12:58:17,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 12:58:17,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 12:58:17,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2661 transitions. [2022-01-19 12:58:17,265 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646551724137931 [2022-01-19 12:58:17,265 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2661 transitions. [2022-01-19 12:58:17,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2661 transitions. [2022-01-19 12:58:17,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:17,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2661 transitions. [2022-01-19 12:58:17,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.05) internal successors, (2661), 20 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:17,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:17,274 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:17,274 INFO L186 Difference]: Start difference. First operand has 342 places, 255 transitions, 2035 flow. Second operand 20 states and 2661 transitions. [2022-01-19 12:58:17,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 307 transitions, 3109 flow [2022-01-19 12:58:17,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 307 transitions, 2850 flow, removed 35 selfloop flow, removed 22 redundant places. [2022-01-19 12:58:17,334 INFO L242 Difference]: Finished difference. Result has 324 places, 264 transitions, 2149 flow [2022-01-19 12:58:17,334 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2149, PETRI_PLACES=324, PETRI_TRANSITIONS=264} [2022-01-19 12:58:17,334 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 167 predicate places. [2022-01-19 12:58:17,335 INFO L470 AbstractCegarLoop]: Abstraction has has 324 places, 264 transitions, 2149 flow [2022-01-19 12:58:17,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:17,335 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:17,335 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] [2022-01-19 12:58:17,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-19 12:58:17,335 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:17,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:17,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1058941744, now seen corresponding path program 12 times [2022-01-19 12:58:17,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:17,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93278908] [2022-01-19 12:58:17,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:17,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:17,440 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 12:58:17,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:17,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93278908] [2022-01-19 12:58:17,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93278908] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:17,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:17,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:17,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455030129] [2022-01-19 12:58:17,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:17,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:17,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:17,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:17,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:17,442 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:17,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 264 transitions, 2149 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:17,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:17,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:17,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:17,954 INFO L129 PetriNetUnfolder]: 323/1729 cut-off events. [2022-01-19 12:58:17,954 INFO L130 PetriNetUnfolder]: For 9795/9869 co-relation queries the response was YES. [2022-01-19 12:58:17,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6742 conditions, 1729 events. 323/1729 cut-off events. For 9795/9869 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13600 event pairs, 227 based on Foata normal form. 3/1667 useless extension candidates. Maximal degree in co-relation 6647. Up to 736 conditions per place. [2022-01-19 12:58:17,972 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 37 changer transitions 31/310 dead transitions. [2022-01-19 12:58:17,973 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 310 transitions, 3093 flow [2022-01-19 12:58:17,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 12:58:17,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 12:58:17,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2532 transitions. [2022-01-19 12:58:17,976 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658802177858439 [2022-01-19 12:58:17,977 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2532 transitions. [2022-01-19 12:58:17,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2532 transitions. [2022-01-19 12:58:17,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:17,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2532 transitions. [2022-01-19 12:58:17,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.26315789473685) internal successors, (2532), 19 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:17,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:17,985 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:17,985 INFO L186 Difference]: Start difference. First operand has 324 places, 264 transitions, 2149 flow. Second operand 19 states and 2532 transitions. [2022-01-19 12:58:17,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 310 transitions, 3093 flow [2022-01-19 12:58:18,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 310 transitions, 2966 flow, removed 43 selfloop flow, removed 7 redundant places. [2022-01-19 12:58:18,065 INFO L242 Difference]: Finished difference. Result has 334 places, 267 transitions, 2231 flow [2022-01-19 12:58:18,065 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2061, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2231, PETRI_PLACES=334, PETRI_TRANSITIONS=267} [2022-01-19 12:58:18,066 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 177 predicate places. [2022-01-19 12:58:18,066 INFO L470 AbstractCegarLoop]: Abstraction has has 334 places, 267 transitions, 2231 flow [2022-01-19 12:58:18,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:18,066 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:18,067 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] [2022-01-19 12:58:18,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 12:58:18,067 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:18,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:18,067 INFO L85 PathProgramCache]: Analyzing trace with hash -8065022, now seen corresponding path program 13 times [2022-01-19 12:58:18,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:18,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356022071] [2022-01-19 12:58:18,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:18,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:18,190 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 12:58:18,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:18,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356022071] [2022-01-19 12:58:18,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356022071] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:18,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:18,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:18,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531611828] [2022-01-19 12:58:18,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:18,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:18,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:18,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:18,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:18,193 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:18,194 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 267 transitions, 2231 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:18,194 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:18,194 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:18,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:18,685 INFO L129 PetriNetUnfolder]: 322/1724 cut-off events. [2022-01-19 12:58:18,685 INFO L130 PetriNetUnfolder]: For 9816/9898 co-relation queries the response was YES. [2022-01-19 12:58:18,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6649 conditions, 1724 events. 322/1724 cut-off events. For 9816/9898 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13466 event pairs, 227 based on Foata normal form. 3/1662 useless extension candidates. Maximal degree in co-relation 6550. Up to 734 conditions per place. [2022-01-19 12:58:18,704 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 27 changer transitions 41/310 dead transitions. [2022-01-19 12:58:18,704 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 310 transitions, 3066 flow [2022-01-19 12:58:18,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 12:58:18,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 12:58:18,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2790 transitions. [2022-01-19 12:58:18,718 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635467980295566 [2022-01-19 12:58:18,718 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2790 transitions. [2022-01-19 12:58:18,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2790 transitions. [2022-01-19 12:58:18,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:18,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2790 transitions. [2022-01-19 12:58:18,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.85714285714286) internal successors, (2790), 21 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:18,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:18,727 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:18,727 INFO L186 Difference]: Start difference. First operand has 334 places, 267 transitions, 2231 flow. Second operand 21 states and 2790 transitions. [2022-01-19 12:58:18,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 310 transitions, 3066 flow [2022-01-19 12:58:18,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 310 transitions, 2939 flow, removed 26 selfloop flow, removed 8 redundant places. [2022-01-19 12:58:18,809 INFO L242 Difference]: Finished difference. Result has 346 places, 258 transitions, 2031 flow [2022-01-19 12:58:18,809 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2031, PETRI_PLACES=346, PETRI_TRANSITIONS=258} [2022-01-19 12:58:18,810 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 189 predicate places. [2022-01-19 12:58:18,810 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 258 transitions, 2031 flow [2022-01-19 12:58:18,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:18,810 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:18,810 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] [2022-01-19 12:58:18,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-19 12:58:18,811 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:18,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:18,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1927747958, now seen corresponding path program 14 times [2022-01-19 12:58:18,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:18,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124843797] [2022-01-19 12:58:18,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:18,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:58:18,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:18,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124843797] [2022-01-19 12:58:18,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124843797] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:18,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:18,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:18,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626775596] [2022-01-19 12:58:18,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:18,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:18,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:18,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:18,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:18,937 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:18,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 258 transitions, 2031 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:18,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:18,939 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:18,939 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:19,494 INFO L129 PetriNetUnfolder]: 309/1672 cut-off events. [2022-01-19 12:58:19,494 INFO L130 PetriNetUnfolder]: For 9541/9622 co-relation queries the response was YES. [2022-01-19 12:58:19,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6333 conditions, 1672 events. 309/1672 cut-off events. For 9541/9622 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12976 event pairs, 224 based on Foata normal form. 3/1612 useless extension candidates. Maximal degree in co-relation 6230. Up to 722 conditions per place. [2022-01-19 12:58:19,508 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 82 selfloop transitions, 14 changer transitions 43/288 dead transitions. [2022-01-19 12:58:19,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 288 transitions, 2632 flow [2022-01-19 12:58:19,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 12:58:19,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 12:58:19,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2910 transitions. [2022-01-19 12:58:19,519 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7601880877742947 [2022-01-19 12:58:19,519 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2910 transitions. [2022-01-19 12:58:19,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2910 transitions. [2022-01-19 12:58:19,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:19,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2910 transitions. [2022-01-19 12:58:19,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.27272727272728) internal successors, (2910), 22 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:19,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:19,526 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:19,526 INFO L186 Difference]: Start difference. First operand has 346 places, 258 transitions, 2031 flow. Second operand 22 states and 2910 transitions. [2022-01-19 12:58:19,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 288 transitions, 2632 flow [2022-01-19 12:58:19,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 288 transitions, 2447 flow, removed 38 selfloop flow, removed 26 redundant places. [2022-01-19 12:58:19,594 INFO L242 Difference]: Finished difference. Result has 329 places, 235 transitions, 1594 flow [2022-01-19 12:58:19,594 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1594, PETRI_PLACES=329, PETRI_TRANSITIONS=235} [2022-01-19 12:58:19,594 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 172 predicate places. [2022-01-19 12:58:19,595 INFO L470 AbstractCegarLoop]: Abstraction has has 329 places, 235 transitions, 1594 flow [2022-01-19 12:58:19,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:19,595 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:19,595 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] [2022-01-19 12:58:19,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 12:58:19,595 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:19,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:19,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1376564854, now seen corresponding path program 15 times [2022-01-19 12:58:19,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:19,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691485063] [2022-01-19 12:58:19,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:19,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:19,717 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 12:58:19,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:19,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691485063] [2022-01-19 12:58:19,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691485063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:19,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:19,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:19,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276847184] [2022-01-19 12:58:19,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:19,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:19,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:19,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:19,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:19,720 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:19,721 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 235 transitions, 1594 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:19,721 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:19,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:19,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:20,228 INFO L129 PetriNetUnfolder]: 318/1696 cut-off events. [2022-01-19 12:58:20,228 INFO L130 PetriNetUnfolder]: For 9351/9426 co-relation queries the response was YES. [2022-01-19 12:58:20,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6412 conditions, 1696 events. 318/1696 cut-off events. For 9351/9426 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13162 event pairs, 234 based on Foata normal form. 1/1633 useless extension candidates. Maximal degree in co-relation 6318. Up to 722 conditions per place. [2022-01-19 12:58:20,245 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 87 selfloop transitions, 26 changer transitions 35/297 dead transitions. [2022-01-19 12:58:20,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 297 transitions, 2701 flow [2022-01-19 12:58:20,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 12:58:20,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 12:58:20,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3186 transitions. [2022-01-19 12:58:20,249 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629310344827587 [2022-01-19 12:58:20,249 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3186 transitions. [2022-01-19 12:58:20,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3186 transitions. [2022-01-19 12:58:20,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:20,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3186 transitions. [2022-01-19 12:58:20,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.75) internal successors, (3186), 24 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:20,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:20,257 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:20,257 INFO L186 Difference]: Start difference. First operand has 329 places, 235 transitions, 1594 flow. Second operand 24 states and 3186 transitions. [2022-01-19 12:58:20,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 297 transitions, 2701 flow [2022-01-19 12:58:20,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 297 transitions, 2454 flow, removed 43 selfloop flow, removed 23 redundant places. [2022-01-19 12:58:20,319 INFO L242 Difference]: Finished difference. Result has 311 places, 246 transitions, 1738 flow [2022-01-19 12:58:20,319 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1738, PETRI_PLACES=311, PETRI_TRANSITIONS=246} [2022-01-19 12:58:20,319 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 154 predicate places. [2022-01-19 12:58:20,320 INFO L470 AbstractCegarLoop]: Abstraction has has 311 places, 246 transitions, 1738 flow [2022-01-19 12:58:20,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:20,320 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:20,320 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] [2022-01-19 12:58:20,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-19 12:58:20,320 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:20,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:20,321 INFO L85 PathProgramCache]: Analyzing trace with hash 207788190, now seen corresponding path program 16 times [2022-01-19 12:58:20,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:20,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748729867] [2022-01-19 12:58:20,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:20,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:20,430 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 12:58:20,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:20,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748729867] [2022-01-19 12:58:20,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748729867] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:20,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:20,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:20,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679639235] [2022-01-19 12:58:20,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:20,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:20,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:20,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:20,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:20,433 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:20,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 246 transitions, 1738 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:20,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:20,434 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:20,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:20,963 INFO L129 PetriNetUnfolder]: 314/1691 cut-off events. [2022-01-19 12:58:20,963 INFO L130 PetriNetUnfolder]: For 8770/8844 co-relation queries the response was YES. [2022-01-19 12:58:20,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6343 conditions, 1691 events. 314/1691 cut-off events. For 8770/8844 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13201 event pairs, 230 based on Foata normal form. 3/1630 useless extension candidates. Maximal degree in co-relation 6250. Up to 724 conditions per place. [2022-01-19 12:58:20,979 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 86 selfloop transitions, 28 changer transitions 36/299 dead transitions. [2022-01-19 12:58:20,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 299 transitions, 2714 flow [2022-01-19 12:58:20,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-19 12:58:20,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-01-19 12:58:20,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3055 transitions. [2022-01-19 12:58:20,982 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763368315842079 [2022-01-19 12:58:20,982 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3055 transitions. [2022-01-19 12:58:20,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3055 transitions. [2022-01-19 12:58:20,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:20,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3055 transitions. [2022-01-19 12:58:20,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.82608695652175) internal successors, (3055), 23 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:20,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:20,990 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:20,990 INFO L186 Difference]: Start difference. First operand has 311 places, 246 transitions, 1738 flow. Second operand 23 states and 3055 transitions. [2022-01-19 12:58:20,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 299 transitions, 2714 flow [2022-01-19 12:58:21,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 299 transitions, 2611 flow, removed 46 selfloop flow, removed 12 redundant places. [2022-01-19 12:58:21,044 INFO L242 Difference]: Finished difference. Result has 322 places, 250 transitions, 1880 flow [2022-01-19 12:58:21,044 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1698, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1880, PETRI_PLACES=322, PETRI_TRANSITIONS=250} [2022-01-19 12:58:21,044 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 165 predicate places. [2022-01-19 12:58:21,045 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 250 transitions, 1880 flow [2022-01-19 12:58:21,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:21,045 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:21,045 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] [2022-01-19 12:58:21,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-19 12:58:21,045 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:21,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:21,046 INFO L85 PathProgramCache]: Analyzing trace with hash 305216672, now seen corresponding path program 17 times [2022-01-19 12:58:21,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:21,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82471151] [2022-01-19 12:58:21,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:21,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:21,141 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 12:58:21,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:21,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82471151] [2022-01-19 12:58:21,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82471151] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:21,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:21,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:21,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543724350] [2022-01-19 12:58:21,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:21,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:21,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:21,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:21,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:21,144 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:21,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 250 transitions, 1880 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:21,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:21,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:21,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:21,634 INFO L129 PetriNetUnfolder]: 310/1678 cut-off events. [2022-01-19 12:58:21,635 INFO L130 PetriNetUnfolder]: For 8984/9059 co-relation queries the response was YES. [2022-01-19 12:58:21,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6296 conditions, 1678 events. 310/1678 cut-off events. For 8984/9059 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13060 event pairs, 232 based on Foata normal form. 1/1615 useless extension candidates. Maximal degree in co-relation 6198. Up to 722 conditions per place. [2022-01-19 12:58:21,649 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 85 selfloop transitions, 30 changer transitions 30/294 dead transitions. [2022-01-19 12:58:21,649 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 294 transitions, 2745 flow [2022-01-19 12:58:21,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 12:58:21,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 12:58:21,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2664 transitions. [2022-01-19 12:58:21,652 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2022-01-19 12:58:21,652 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2664 transitions. [2022-01-19 12:58:21,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2664 transitions. [2022-01-19 12:58:21,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:21,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2664 transitions. [2022-01-19 12:58:21,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.2) internal successors, (2664), 20 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:21,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:21,659 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:21,659 INFO L186 Difference]: Start difference. First operand has 322 places, 250 transitions, 1880 flow. Second operand 20 states and 2664 transitions. [2022-01-19 12:58:21,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 294 transitions, 2745 flow [2022-01-19 12:58:21,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 294 transitions, 2597 flow, removed 52 selfloop flow, removed 14 redundant places. [2022-01-19 12:58:21,725 INFO L242 Difference]: Finished difference. Result has 322 places, 257 transitions, 1994 flow [2022-01-19 12:58:21,725 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1994, PETRI_PLACES=322, PETRI_TRANSITIONS=257} [2022-01-19 12:58:21,725 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 165 predicate places. [2022-01-19 12:58:21,725 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 257 transitions, 1994 flow [2022-01-19 12:58:21,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:21,726 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:21,726 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] [2022-01-19 12:58:21,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-19 12:58:21,726 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:21,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:21,727 INFO L85 PathProgramCache]: Analyzing trace with hash -547353468, now seen corresponding path program 18 times [2022-01-19 12:58:21,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:21,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142149426] [2022-01-19 12:58:21,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:21,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:21,828 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 12:58:21,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:21,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142149426] [2022-01-19 12:58:21,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142149426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:21,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:21,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:21,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541110409] [2022-01-19 12:58:21,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:21,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:21,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:21,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:21,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:21,832 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:21,833 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 257 transitions, 1994 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:21,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:21,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:21,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:22,264 INFO L129 PetriNetUnfolder]: 313/1688 cut-off events. [2022-01-19 12:58:22,264 INFO L130 PetriNetUnfolder]: For 9095/9170 co-relation queries the response was YES. [2022-01-19 12:58:22,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6396 conditions, 1688 events. 313/1688 cut-off events. For 9095/9170 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13159 event pairs, 232 based on Foata normal form. 1/1625 useless extension candidates. Maximal degree in co-relation 6301. Up to 722 conditions per place. [2022-01-19 12:58:22,280 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 85 selfloop transitions, 38 changer transitions 30/302 dead transitions. [2022-01-19 12:58:22,280 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 302 transitions, 2908 flow [2022-01-19 12:58:22,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 12:58:22,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 12:58:22,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2533 transitions. [2022-01-19 12:58:22,284 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7661826981246219 [2022-01-19 12:58:22,284 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2533 transitions. [2022-01-19 12:58:22,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2533 transitions. [2022-01-19 12:58:22,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:22,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2533 transitions. [2022-01-19 12:58:22,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.31578947368422) internal successors, (2533), 19 states have internal predecessors, (2533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:22,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:22,299 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:22,299 INFO L186 Difference]: Start difference. First operand has 322 places, 257 transitions, 1994 flow. Second operand 19 states and 2533 transitions. [2022-01-19 12:58:22,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 302 transitions, 2908 flow [2022-01-19 12:58:22,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 302 transitions, 2789 flow, removed 37 selfloop flow, removed 7 redundant places. [2022-01-19 12:58:22,366 INFO L242 Difference]: Finished difference. Result has 333 places, 265 transitions, 2172 flow [2022-01-19 12:58:22,366 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1921, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2172, PETRI_PLACES=333, PETRI_TRANSITIONS=265} [2022-01-19 12:58:22,367 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 176 predicate places. [2022-01-19 12:58:22,368 INFO L470 AbstractCegarLoop]: Abstraction has has 333 places, 265 transitions, 2172 flow [2022-01-19 12:58:22,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:22,368 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:22,368 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] [2022-01-19 12:58:22,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-19 12:58:22,368 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:22,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:22,369 INFO L85 PathProgramCache]: Analyzing trace with hash -123208248, now seen corresponding path program 19 times [2022-01-19 12:58:22,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:22,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725076747] [2022-01-19 12:58:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:22,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:22,475 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 12:58:22,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:22,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725076747] [2022-01-19 12:58:22,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725076747] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:22,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:22,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:22,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801022721] [2022-01-19 12:58:22,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:22,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:22,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:22,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:22,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:22,478 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:22,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 265 transitions, 2172 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:22,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:22,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:22,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:22,987 INFO L129 PetriNetUnfolder]: 310/1695 cut-off events. [2022-01-19 12:58:22,987 INFO L130 PetriNetUnfolder]: For 9184/9259 co-relation queries the response was YES. [2022-01-19 12:58:23,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6420 conditions, 1695 events. 310/1695 cut-off events. For 9184/9259 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13208 event pairs, 231 based on Foata normal form. 1/1632 useless extension candidates. Maximal degree in co-relation 6319. Up to 722 conditions per place. [2022-01-19 12:58:23,004 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 92 selfloop transitions, 34 changer transitions 31/306 dead transitions. [2022-01-19 12:58:23,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 306 transitions, 3048 flow [2022-01-19 12:58:23,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 12:58:23,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 12:58:23,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2664 transitions. [2022-01-19 12:58:23,009 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2022-01-19 12:58:23,009 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2664 transitions. [2022-01-19 12:58:23,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2664 transitions. [2022-01-19 12:58:23,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:23,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2664 transitions. [2022-01-19 12:58:23,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.2) internal successors, (2664), 20 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:23,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:23,015 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:23,015 INFO L186 Difference]: Start difference. First operand has 333 places, 265 transitions, 2172 flow. Second operand 20 states and 2664 transitions. [2022-01-19 12:58:23,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 306 transitions, 3048 flow [2022-01-19 12:58:23,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 306 transitions, 2928 flow, removed 23 selfloop flow, removed 9 redundant places. [2022-01-19 12:58:23,084 INFO L242 Difference]: Finished difference. Result has 343 places, 269 transitions, 2265 flow [2022-01-19 12:58:23,085 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2088, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2265, PETRI_PLACES=343, PETRI_TRANSITIONS=269} [2022-01-19 12:58:23,086 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 186 predicate places. [2022-01-19 12:58:23,086 INFO L470 AbstractCegarLoop]: Abstraction has has 343 places, 269 transitions, 2265 flow [2022-01-19 12:58:23,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:23,086 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:23,087 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] [2022-01-19 12:58:23,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-19 12:58:23,087 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:23,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:23,087 INFO L85 PathProgramCache]: Analyzing trace with hash -85099410, now seen corresponding path program 20 times [2022-01-19 12:58:23,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:23,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955908985] [2022-01-19 12:58:23,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:23,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:23,210 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 12:58:23,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:23,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955908985] [2022-01-19 12:58:23,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955908985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:23,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:23,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:23,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245006353] [2022-01-19 12:58:23,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:23,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:23,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:23,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:23,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:23,213 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:23,214 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 269 transitions, 2265 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:23,214 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:23,214 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:23,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:23,682 INFO L129 PetriNetUnfolder]: 305/1689 cut-off events. [2022-01-19 12:58:23,682 INFO L130 PetriNetUnfolder]: For 9041/9116 co-relation queries the response was YES. [2022-01-19 12:58:23,695 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6319 conditions, 1689 events. 305/1689 cut-off events. For 9041/9116 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13211 event pairs, 232 based on Foata normal form. 1/1625 useless extension candidates. Maximal degree in co-relation 6214. Up to 722 conditions per place. [2022-01-19 12:58:23,699 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 88 selfloop transitions, 19 changer transitions 44/300 dead transitions. [2022-01-19 12:58:23,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 300 transitions, 2909 flow [2022-01-19 12:58:23,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 12:58:23,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 12:58:23,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2022-01-19 12:58:23,703 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2022-01-19 12:58:23,704 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2022-01-19 12:58:23,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2022-01-19 12:58:23,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:23,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2022-01-19 12:58:23,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:23,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:23,710 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:23,710 INFO L186 Difference]: Start difference. First operand has 343 places, 269 transitions, 2265 flow. Second operand 20 states and 2663 transitions. [2022-01-19 12:58:23,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 300 transitions, 2909 flow [2022-01-19 12:58:23,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 300 transitions, 2812 flow, removed 27 selfloop flow, removed 7 redundant places. [2022-01-19 12:58:23,785 INFO L242 Difference]: Finished difference. Result has 352 places, 252 transitions, 1935 flow [2022-01-19 12:58:23,785 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2184, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1935, PETRI_PLACES=352, PETRI_TRANSITIONS=252} [2022-01-19 12:58:23,786 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 195 predicate places. [2022-01-19 12:58:23,786 INFO L470 AbstractCegarLoop]: Abstraction has has 352 places, 252 transitions, 1935 flow [2022-01-19 12:58:23,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:23,786 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:23,787 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] [2022-01-19 12:58:23,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-19 12:58:23,787 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:23,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:23,787 INFO L85 PathProgramCache]: Analyzing trace with hash 222130868, now seen corresponding path program 21 times [2022-01-19 12:58:23,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:23,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836813214] [2022-01-19 12:58:23,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:23,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:23,903 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 12:58:23,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:23,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836813214] [2022-01-19 12:58:23,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836813214] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:23,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:23,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:23,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922638936] [2022-01-19 12:58:23,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:23,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:23,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:23,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:23,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:23,907 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:23,908 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 252 transitions, 1935 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:23,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:23,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:23,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:24,444 INFO L129 PetriNetUnfolder]: 300/1664 cut-off events. [2022-01-19 12:58:24,445 INFO L130 PetriNetUnfolder]: For 8941/9015 co-relation queries the response was YES. [2022-01-19 12:58:24,454 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6189 conditions, 1664 events. 300/1664 cut-off events. For 8941/9015 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12991 event pairs, 227 based on Foata normal form. 3/1603 useless extension candidates. Maximal degree in co-relation 6081. Up to 724 conditions per place. [2022-01-19 12:58:24,457 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 78 selfloop transitions, 20 changer transitions 40/287 dead transitions. [2022-01-19 12:58:24,457 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 287 transitions, 2635 flow [2022-01-19 12:58:24,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 12:58:24,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 12:58:24,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2919 transitions. [2022-01-19 12:58:24,459 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762539184952978 [2022-01-19 12:58:24,459 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2919 transitions. [2022-01-19 12:58:24,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2919 transitions. [2022-01-19 12:58:24,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:24,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2919 transitions. [2022-01-19 12:58:24,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.6818181818182) internal successors, (2919), 22 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:24,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:24,465 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:24,465 INFO L186 Difference]: Start difference. First operand has 352 places, 252 transitions, 1935 flow. Second operand 22 states and 2919 transitions. [2022-01-19 12:58:24,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 287 transitions, 2635 flow [2022-01-19 12:58:24,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 287 transitions, 2434 flow, removed 32 selfloop flow, removed 26 redundant places. [2022-01-19 12:58:24,526 INFO L242 Difference]: Finished difference. Result has 333 places, 243 transitions, 1714 flow [2022-01-19 12:58:24,526 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1714, PETRI_PLACES=333, PETRI_TRANSITIONS=243} [2022-01-19 12:58:24,527 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 176 predicate places. [2022-01-19 12:58:24,527 INFO L470 AbstractCegarLoop]: Abstraction has has 333 places, 243 transitions, 1714 flow [2022-01-19 12:58:24,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:24,527 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:24,527 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] [2022-01-19 12:58:24,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-19 12:58:24,528 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:24,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:24,528 INFO L85 PathProgramCache]: Analyzing trace with hash 783451192, now seen corresponding path program 22 times [2022-01-19 12:58:24,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:24,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311330892] [2022-01-19 12:58:24,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:24,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:24,653 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 12:58:24,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:24,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311330892] [2022-01-19 12:58:24,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311330892] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:24,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:24,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:24,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644338190] [2022-01-19 12:58:24,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:24,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:24,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:24,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:24,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:24,656 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:24,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 243 transitions, 1714 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:24,657 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:24,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:24,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:25,141 INFO L129 PetriNetUnfolder]: 287/1613 cut-off events. [2022-01-19 12:58:25,141 INFO L130 PetriNetUnfolder]: For 8051/8125 co-relation queries the response was YES. [2022-01-19 12:58:25,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5789 conditions, 1613 events. 287/1613 cut-off events. For 8051/8125 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12490 event pairs, 225 based on Foata normal form. 3/1554 useless extension candidates. Maximal degree in co-relation 5688. Up to 711 conditions per place. [2022-01-19 12:58:25,155 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 67 selfloop transitions, 4 changer transitions 44/264 dead transitions. [2022-01-19 12:58:25,155 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 264 transitions, 2134 flow [2022-01-19 12:58:25,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 12:58:25,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 12:58:25,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2778 transitions. [2022-01-19 12:58:25,157 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602627257799671 [2022-01-19 12:58:25,157 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2778 transitions. [2022-01-19 12:58:25,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2778 transitions. [2022-01-19 12:58:25,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:25,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2778 transitions. [2022-01-19 12:58:25,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.28571428571428) internal successors, (2778), 21 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:25,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:25,162 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:25,162 INFO L186 Difference]: Start difference. First operand has 333 places, 243 transitions, 1714 flow. Second operand 21 states and 2778 transitions. [2022-01-19 12:58:25,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 264 transitions, 2134 flow [2022-01-19 12:58:25,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 264 transitions, 2013 flow, removed 28 selfloop flow, removed 23 redundant places. [2022-01-19 12:58:25,204 INFO L242 Difference]: Finished difference. Result has 315 places, 216 transitions, 1261 flow [2022-01-19 12:58:25,205 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1616, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1261, PETRI_PLACES=315, PETRI_TRANSITIONS=216} [2022-01-19 12:58:25,205 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 158 predicate places. [2022-01-19 12:58:25,206 INFO L470 AbstractCegarLoop]: Abstraction has has 315 places, 216 transitions, 1261 flow [2022-01-19 12:58:25,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:25,206 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:25,206 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] [2022-01-19 12:58:25,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-19 12:58:25,206 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:25,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:25,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1867892242, now seen corresponding path program 23 times [2022-01-19 12:58:25,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:25,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707926789] [2022-01-19 12:58:25,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:25,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:25,329 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 12:58:25,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:25,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707926789] [2022-01-19 12:58:25,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707926789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:25,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:25,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:25,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019159919] [2022-01-19 12:58:25,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:25,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:25,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:25,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:25,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:25,332 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:25,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 216 transitions, 1261 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:25,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:25,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:25,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:25,838 INFO L129 PetriNetUnfolder]: 304/1667 cut-off events. [2022-01-19 12:58:25,838 INFO L130 PetriNetUnfolder]: For 8039/8111 co-relation queries the response was YES. [2022-01-19 12:58:25,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5930 conditions, 1667 events. 304/1667 cut-off events. For 8039/8111 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12910 event pairs, 225 based on Foata normal form. 1/1610 useless extension candidates. Maximal degree in co-relation 5841. Up to 719 conditions per place. [2022-01-19 12:58:25,849 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 81 selfloop transitions, 23 changer transitions 42/295 dead transitions. [2022-01-19 12:58:25,849 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 295 transitions, 2433 flow [2022-01-19 12:58:25,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 12:58:25,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 12:58:25,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3705 transitions. [2022-01-19 12:58:25,851 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604679802955665 [2022-01-19 12:58:25,851 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3705 transitions. [2022-01-19 12:58:25,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3705 transitions. [2022-01-19 12:58:25,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:25,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3705 transitions. [2022-01-19 12:58:25,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.32142857142858) internal successors, (3705), 28 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:25,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:25,859 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:25,859 INFO L186 Difference]: Start difference. First operand has 315 places, 216 transitions, 1261 flow. Second operand 28 states and 3705 transitions. [2022-01-19 12:58:25,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 295 transitions, 2433 flow [2022-01-19 12:58:25,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 295 transitions, 2284 flow, removed 40 selfloop flow, removed 21 redundant places. [2022-01-19 12:58:25,905 INFO L242 Difference]: Finished difference. Result has 302 places, 229 transitions, 1462 flow [2022-01-19 12:58:25,905 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1209, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1462, PETRI_PLACES=302, PETRI_TRANSITIONS=229} [2022-01-19 12:58:25,906 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 145 predicate places. [2022-01-19 12:58:25,906 INFO L470 AbstractCegarLoop]: Abstraction has has 302 places, 229 transitions, 1462 flow [2022-01-19 12:58:25,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:25,906 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:25,906 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] [2022-01-19 12:58:25,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-19 12:58:25,906 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:25,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:25,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1891662696, now seen corresponding path program 24 times [2022-01-19 12:58:25,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:25,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356647845] [2022-01-19 12:58:25,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:25,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:26,008 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 12:58:26,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:26,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356647845] [2022-01-19 12:58:26,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356647845] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:26,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:26,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:26,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332915667] [2022-01-19 12:58:26,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:26,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:26,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:26,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:26,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:26,010 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:26,011 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 229 transitions, 1462 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:26,011 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:26,011 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:26,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:26,537 INFO L129 PetriNetUnfolder]: 301/1661 cut-off events. [2022-01-19 12:58:26,537 INFO L130 PetriNetUnfolder]: For 8174/8246 co-relation queries the response was YES. [2022-01-19 12:58:26,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5995 conditions, 1661 events. 301/1661 cut-off events. For 8174/8246 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12859 event pairs, 228 based on Foata normal form. 1/1599 useless extension candidates. Maximal degree in co-relation 5902. Up to 717 conditions per place. [2022-01-19 12:58:26,552 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 77 selfloop transitions, 25 changer transitions 42/293 dead transitions. [2022-01-19 12:58:26,552 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 293 transitions, 2560 flow [2022-01-19 12:58:26,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 12:58:26,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 12:58:26,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3572 transitions. [2022-01-19 12:58:26,554 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7603235419327373 [2022-01-19 12:58:26,554 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3572 transitions. [2022-01-19 12:58:26,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3572 transitions. [2022-01-19 12:58:26,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:26,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3572 transitions. [2022-01-19 12:58:26,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.2962962962963) internal successors, (3572), 27 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:26,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:26,561 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:26,561 INFO L186 Difference]: Start difference. First operand has 302 places, 229 transitions, 1462 flow. Second operand 27 states and 3572 transitions. [2022-01-19 12:58:26,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 293 transitions, 2560 flow [2022-01-19 12:58:26,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 293 transitions, 2398 flow, removed 73 selfloop flow, removed 17 redundant places. [2022-01-19 12:58:26,612 INFO L242 Difference]: Finished difference. Result has 313 places, 233 transitions, 1608 flow [2022-01-19 12:58:26,612 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1608, PETRI_PLACES=313, PETRI_TRANSITIONS=233} [2022-01-19 12:58:26,612 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 156 predicate places. [2022-01-19 12:58:26,612 INFO L470 AbstractCegarLoop]: Abstraction has has 313 places, 233 transitions, 1608 flow [2022-01-19 12:58:26,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:26,613 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:26,613 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] [2022-01-19 12:58:26,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-19 12:58:26,613 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:26,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:26,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1489406044, now seen corresponding path program 25 times [2022-01-19 12:58:26,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:26,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065900600] [2022-01-19 12:58:26,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:26,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:26,727 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 12:58:26,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:26,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065900600] [2022-01-19 12:58:26,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065900600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:26,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:26,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:26,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151066416] [2022-01-19 12:58:26,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:26,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:26,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:26,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:26,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:26,729 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:26,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 233 transitions, 1608 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:26,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:26,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:26,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:27,211 INFO L129 PetriNetUnfolder]: 296/1635 cut-off events. [2022-01-19 12:58:27,211 INFO L130 PetriNetUnfolder]: For 8844/8916 co-relation queries the response was YES. [2022-01-19 12:58:27,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6035 conditions, 1635 events. 296/1635 cut-off events. For 8844/8916 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12597 event pairs, 223 based on Foata normal form. 1/1574 useless extension candidates. Maximal degree in co-relation 5936. Up to 719 conditions per place. [2022-01-19 12:58:27,223 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 79 selfloop transitions, 27 changer transitions 37/292 dead transitions. [2022-01-19 12:58:27,223 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 292 transitions, 2659 flow [2022-01-19 12:58:27,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 12:58:27,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 12:58:27,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3183 transitions. [2022-01-19 12:58:27,225 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7622126436781609 [2022-01-19 12:58:27,225 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3183 transitions. [2022-01-19 12:58:27,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3183 transitions. [2022-01-19 12:58:27,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:27,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3183 transitions. [2022-01-19 12:58:27,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.625) internal successors, (3183), 24 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:27,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:27,231 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:27,231 INFO L186 Difference]: Start difference. First operand has 313 places, 233 transitions, 1608 flow. Second operand 24 states and 3183 transitions. [2022-01-19 12:58:27,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 292 transitions, 2659 flow [2022-01-19 12:58:27,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 292 transitions, 2435 flow, removed 93 selfloop flow, removed 20 redundant places. [2022-01-19 12:58:27,274 INFO L242 Difference]: Finished difference. Result has 312 places, 240 transitions, 1718 flow [2022-01-19 12:58:27,274 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1513, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1718, PETRI_PLACES=312, PETRI_TRANSITIONS=240} [2022-01-19 12:58:27,274 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 155 predicate places. [2022-01-19 12:58:27,275 INFO L470 AbstractCegarLoop]: Abstraction has has 312 places, 240 transitions, 1718 flow [2022-01-19 12:58:27,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:27,275 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:27,275 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] [2022-01-19 12:58:27,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-19 12:58:27,275 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:27,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:27,276 INFO L85 PathProgramCache]: Analyzing trace with hash -647839046, now seen corresponding path program 26 times [2022-01-19 12:58:27,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:27,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933999205] [2022-01-19 12:58:27,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:27,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:27,376 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 12:58:27,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:27,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933999205] [2022-01-19 12:58:27,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933999205] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:27,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:27,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:27,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880974985] [2022-01-19 12:58:27,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:27,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:27,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:27,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:27,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:27,379 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:27,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 240 transitions, 1718 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:27,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:27,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:27,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:27,869 INFO L129 PetriNetUnfolder]: 305/1669 cut-off events. [2022-01-19 12:58:27,870 INFO L130 PetriNetUnfolder]: For 8134/8206 co-relation queries the response was YES. [2022-01-19 12:58:27,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6144 conditions, 1669 events. 305/1669 cut-off events. For 8134/8206 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12936 event pairs, 231 based on Foata normal form. 1/1606 useless extension candidates. Maximal degree in co-relation 6048. Up to 725 conditions per place. [2022-01-19 12:58:27,887 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 76 selfloop transitions, 37 changer transitions 36/298 dead transitions. [2022-01-19 12:58:27,887 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 298 transitions, 2788 flow [2022-01-19 12:58:27,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-19 12:58:27,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-01-19 12:58:27,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3050 transitions. [2022-01-19 12:58:27,892 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621189405297352 [2022-01-19 12:58:27,892 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3050 transitions. [2022-01-19 12:58:27,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3050 transitions. [2022-01-19 12:58:27,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:27,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3050 transitions. [2022-01-19 12:58:27,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.6086956521739) internal successors, (3050), 23 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:27,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:27,897 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:27,897 INFO L186 Difference]: Start difference. First operand has 312 places, 240 transitions, 1718 flow. Second operand 23 states and 3050 transitions. [2022-01-19 12:58:27,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 298 transitions, 2788 flow [2022-01-19 12:58:27,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 298 transitions, 2608 flow, removed 73 selfloop flow, removed 13 redundant places. [2022-01-19 12:58:27,951 INFO L242 Difference]: Finished difference. Result has 322 places, 250 transitions, 1926 flow [2022-01-19 12:58:27,951 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1926, PETRI_PLACES=322, PETRI_TRANSITIONS=250} [2022-01-19 12:58:27,952 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 165 predicate places. [2022-01-19 12:58:27,952 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 250 transitions, 1926 flow [2022-01-19 12:58:27,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:27,952 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:27,952 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] [2022-01-19 12:58:27,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-19 12:58:27,953 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:27,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:27,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1822088480, now seen corresponding path program 27 times [2022-01-19 12:58:27,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:27,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182838911] [2022-01-19 12:58:27,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:27,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:28,053 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 12:58:28,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:28,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182838911] [2022-01-19 12:58:28,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182838911] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:28,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:28,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:28,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399907991] [2022-01-19 12:58:28,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:28,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:28,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:28,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:28,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:28,055 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:28,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 250 transitions, 1926 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:28,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:28,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:28,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:28,543 INFO L129 PetriNetUnfolder]: 302/1653 cut-off events. [2022-01-19 12:58:28,543 INFO L130 PetriNetUnfolder]: For 8380/8452 co-relation queries the response was YES. [2022-01-19 12:58:28,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6174 conditions, 1653 events. 302/1653 cut-off events. For 8380/8452 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12773 event pairs, 226 based on Foata normal form. 1/1591 useless extension candidates. Maximal degree in co-relation 6073. Up to 723 conditions per place. [2022-01-19 12:58:28,557 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 85 selfloop transitions, 33 changer transitions 37/304 dead transitions. [2022-01-19 12:58:28,558 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 304 transitions, 3005 flow [2022-01-19 12:58:28,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 12:58:28,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 12:58:28,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3183 transitions. [2022-01-19 12:58:28,559 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7622126436781609 [2022-01-19 12:58:28,560 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3183 transitions. [2022-01-19 12:58:28,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3183 transitions. [2022-01-19 12:58:28,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:28,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3183 transitions. [2022-01-19 12:58:28,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.625) internal successors, (3183), 24 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:28,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:28,565 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:28,566 INFO L186 Difference]: Start difference. First operand has 322 places, 250 transitions, 1926 flow. Second operand 24 states and 3183 transitions. [2022-01-19 12:58:28,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 304 transitions, 3005 flow [2022-01-19 12:58:28,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 304 transitions, 2797 flow, removed 74 selfloop flow, removed 15 redundant places. [2022-01-19 12:58:28,608 INFO L242 Difference]: Finished difference. Result has 331 places, 254 transitions, 2023 flow [2022-01-19 12:58:28,608 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1834, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2023, PETRI_PLACES=331, PETRI_TRANSITIONS=254} [2022-01-19 12:58:28,609 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 174 predicate places. [2022-01-19 12:58:28,609 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 254 transitions, 2023 flow [2022-01-19 12:58:28,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:28,609 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:28,609 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] [2022-01-19 12:58:28,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-19 12:58:28,609 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:28,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:28,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1024266032, now seen corresponding path program 28 times [2022-01-19 12:58:28,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:28,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692447307] [2022-01-19 12:58:28,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:28,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:28,717 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 12:58:28,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:28,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692447307] [2022-01-19 12:58:28,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692447307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:28,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:28,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:28,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788366196] [2022-01-19 12:58:28,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:28,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:28,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:28,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:28,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:28,720 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:28,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 254 transitions, 2023 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:28,721 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:28,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:28,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:29,232 INFO L129 PetriNetUnfolder]: 297/1655 cut-off events. [2022-01-19 12:58:29,232 INFO L130 PetriNetUnfolder]: For 7977/8049 co-relation queries the response was YES. [2022-01-19 12:58:29,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6056 conditions, 1655 events. 297/1655 cut-off events. For 7977/8049 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12792 event pairs, 223 based on Foata normal form. 1/1594 useless extension candidates. Maximal degree in co-relation 5952. Up to 725 conditions per place. [2022-01-19 12:58:29,249 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 82 selfloop transitions, 35 changer transitions 32/298 dead transitions. [2022-01-19 12:58:29,249 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 298 transitions, 2863 flow [2022-01-19 12:58:29,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 12:58:29,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 12:58:29,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2661 transitions. [2022-01-19 12:58:29,251 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646551724137931 [2022-01-19 12:58:29,251 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2661 transitions. [2022-01-19 12:58:29,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2661 transitions. [2022-01-19 12:58:29,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:29,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2661 transitions. [2022-01-19 12:58:29,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.05) internal successors, (2661), 20 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:29,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:29,255 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:29,255 INFO L186 Difference]: Start difference. First operand has 331 places, 254 transitions, 2023 flow. Second operand 20 states and 2661 transitions. [2022-01-19 12:58:29,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 298 transitions, 2863 flow [2022-01-19 12:58:29,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 298 transitions, 2721 flow, removed 56 selfloop flow, removed 12 redundant places. [2022-01-19 12:58:29,296 INFO L242 Difference]: Finished difference. Result has 332 places, 261 transitions, 2146 flow [2022-01-19 12:58:29,296 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1940, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2146, PETRI_PLACES=332, PETRI_TRANSITIONS=261} [2022-01-19 12:58:29,296 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 175 predicate places. [2022-01-19 12:58:29,296 INFO L470 AbstractCegarLoop]: Abstraction has has 332 places, 261 transitions, 2146 flow [2022-01-19 12:58:29,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:29,297 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:29,297 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] [2022-01-19 12:58:29,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-19 12:58:29,297 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:29,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:29,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1918909020, now seen corresponding path program 29 times [2022-01-19 12:58:29,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:29,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725308134] [2022-01-19 12:58:29,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:29,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:29,399 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 12:58:29,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:29,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725308134] [2022-01-19 12:58:29,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725308134] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:29,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:29,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:29,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421517146] [2022-01-19 12:58:29,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:29,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:29,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:29,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:29,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:29,402 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:29,403 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 261 transitions, 2146 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:29,403 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:29,403 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:29,403 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:29,886 INFO L129 PetriNetUnfolder]: 294/1655 cut-off events. [2022-01-19 12:58:29,887 INFO L130 PetriNetUnfolder]: For 7297/7369 co-relation queries the response was YES. [2022-01-19 12:58:29,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5947 conditions, 1655 events. 294/1655 cut-off events. For 7297/7369 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12874 event pairs, 222 based on Foata normal form. 1/1593 useless extension candidates. Maximal degree in co-relation 5844. Up to 723 conditions per place. [2022-01-19 12:58:29,902 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 87 selfloop transitions, 35 changer transitions 31/302 dead transitions. [2022-01-19 12:58:29,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 302 transitions, 2990 flow [2022-01-19 12:58:29,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 12:58:29,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 12:58:29,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2661 transitions. [2022-01-19 12:58:29,905 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646551724137931 [2022-01-19 12:58:29,905 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2661 transitions. [2022-01-19 12:58:29,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2661 transitions. [2022-01-19 12:58:29,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:29,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2661 transitions. [2022-01-19 12:58:29,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.05) internal successors, (2661), 20 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:29,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:29,909 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:29,909 INFO L186 Difference]: Start difference. First operand has 332 places, 261 transitions, 2146 flow. Second operand 20 states and 2661 transitions. [2022-01-19 12:58:29,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 302 transitions, 2990 flow [2022-01-19 12:58:29,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 302 transitions, 2861 flow, removed 45 selfloop flow, removed 8 redundant places. [2022-01-19 12:58:29,949 INFO L242 Difference]: Finished difference. Result has 343 places, 267 transitions, 2261 flow [2022-01-19 12:58:29,949 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2060, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2261, PETRI_PLACES=343, PETRI_TRANSITIONS=267} [2022-01-19 12:58:29,950 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 186 predicate places. [2022-01-19 12:58:29,950 INFO L470 AbstractCegarLoop]: Abstraction has has 343 places, 267 transitions, 2261 flow [2022-01-19 12:58:29,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:29,950 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:29,950 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] [2022-01-19 12:58:29,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-19 12:58:29,950 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:29,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:29,951 INFO L85 PathProgramCache]: Analyzing trace with hash 74022096, now seen corresponding path program 30 times [2022-01-19 12:58:29,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:29,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204854106] [2022-01-19 12:58:29,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:29,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:30,054 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 12:58:30,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:30,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204854106] [2022-01-19 12:58:30,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204854106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:30,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:30,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:30,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950705984] [2022-01-19 12:58:30,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:30,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:30,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:30,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:30,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:30,056 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:30,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 267 transitions, 2261 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:30,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:30,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:30,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:30,518 INFO L129 PetriNetUnfolder]: 297/1657 cut-off events. [2022-01-19 12:58:30,518 INFO L130 PetriNetUnfolder]: For 7430/7502 co-relation queries the response was YES. [2022-01-19 12:58:30,530 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6067 conditions, 1657 events. 297/1657 cut-off events. For 7430/7502 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12918 event pairs, 222 based on Foata normal form. 1/1595 useless extension candidates. Maximal degree in co-relation 5959. Up to 725 conditions per place. [2022-01-19 12:58:30,533 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 79 selfloop transitions, 51 changer transitions 31/310 dead transitions. [2022-01-19 12:58:30,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 310 transitions, 3190 flow [2022-01-19 12:58:30,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 12:58:30,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 12:58:30,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2528 transitions. [2022-01-19 12:58:30,535 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764670296430732 [2022-01-19 12:58:30,535 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2528 transitions. [2022-01-19 12:58:30,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2528 transitions. [2022-01-19 12:58:30,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:30,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2528 transitions. [2022-01-19 12:58:30,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.05263157894737) internal successors, (2528), 19 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:30,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:30,538 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:30,538 INFO L186 Difference]: Start difference. First operand has 343 places, 267 transitions, 2261 flow. Second operand 19 states and 2528 transitions. [2022-01-19 12:58:30,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 310 transitions, 3190 flow [2022-01-19 12:58:30,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 310 transitions, 3074 flow, removed 34 selfloop flow, removed 8 redundant places. [2022-01-19 12:58:30,580 INFO L242 Difference]: Finished difference. Result has 353 places, 275 transitions, 2478 flow [2022-01-19 12:58:30,580 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2185, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2478, PETRI_PLACES=353, PETRI_TRANSITIONS=275} [2022-01-19 12:58:30,581 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 196 predicate places. [2022-01-19 12:58:30,581 INFO L470 AbstractCegarLoop]: Abstraction has has 353 places, 275 transitions, 2478 flow [2022-01-19 12:58:30,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:30,581 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:30,581 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] [2022-01-19 12:58:30,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-19 12:58:30,582 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:30,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:30,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1781172522, now seen corresponding path program 31 times [2022-01-19 12:58:30,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:30,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938909499] [2022-01-19 12:58:30,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:30,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:30,691 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 12:58:30,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:30,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938909499] [2022-01-19 12:58:30,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938909499] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:30,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:30,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:30,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935988113] [2022-01-19 12:58:30,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:30,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:30,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:30,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:30,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:30,693 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:30,694 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 275 transitions, 2478 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:30,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:30,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:30,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:31,217 INFO L129 PetriNetUnfolder]: 294/1662 cut-off events. [2022-01-19 12:58:31,217 INFO L130 PetriNetUnfolder]: For 7631/7703 co-relation queries the response was YES. [2022-01-19 12:58:31,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6108 conditions, 1662 events. 294/1662 cut-off events. For 7631/7703 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12992 event pairs, 220 based on Foata normal form. 1/1600 useless extension candidates. Maximal degree in co-relation 5995. Up to 723 conditions per place. [2022-01-19 12:58:31,232 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 90 selfloop transitions, 43 changer transitions 32/314 dead transitions. [2022-01-19 12:58:31,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 314 transitions, 3373 flow [2022-01-19 12:58:31,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 12:58:31,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 12:58:31,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2659 transitions. [2022-01-19 12:58:31,233 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764080459770115 [2022-01-19 12:58:31,233 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2659 transitions. [2022-01-19 12:58:31,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2659 transitions. [2022-01-19 12:58:31,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:31,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2659 transitions. [2022-01-19 12:58:31,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.95) internal successors, (2659), 20 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:31,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:31,237 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:31,237 INFO L186 Difference]: Start difference. First operand has 353 places, 275 transitions, 2478 flow. Second operand 20 states and 2659 transitions. [2022-01-19 12:58:31,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 314 transitions, 3373 flow [2022-01-19 12:58:31,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 314 transitions, 3232 flow, removed 23 selfloop flow, removed 9 redundant places. [2022-01-19 12:58:31,282 INFO L242 Difference]: Finished difference. Result has 363 places, 279 transitions, 2576 flow [2022-01-19 12:58:31,282 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2373, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2576, PETRI_PLACES=363, PETRI_TRANSITIONS=279} [2022-01-19 12:58:31,283 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 206 predicate places. [2022-01-19 12:58:31,283 INFO L470 AbstractCegarLoop]: Abstraction has has 363 places, 279 transitions, 2576 flow [2022-01-19 12:58:31,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:31,283 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:31,283 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] [2022-01-19 12:58:31,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-19 12:58:31,284 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:31,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:31,284 INFO L85 PathProgramCache]: Analyzing trace with hash -2047896920, now seen corresponding path program 32 times [2022-01-19 12:58:31,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:31,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436160238] [2022-01-19 12:58:31,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:31,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:31,386 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 12:58:31,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:31,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436160238] [2022-01-19 12:58:31,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436160238] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:31,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:31,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:31,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900176739] [2022-01-19 12:58:31,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:31,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:31,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:31,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:31,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:31,389 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:31,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 279 transitions, 2576 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:31,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:31,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:31,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:31,911 INFO L129 PetriNetUnfolder]: 286/1651 cut-off events. [2022-01-19 12:58:31,911 INFO L130 PetriNetUnfolder]: For 7355/7427 co-relation queries the response was YES. [2022-01-19 12:58:31,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5942 conditions, 1651 events. 286/1651 cut-off events. For 7355/7427 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12929 event pairs, 219 based on Foata normal form. 1/1590 useless extension candidates. Maximal degree in co-relation 5825. Up to 718 conditions per place. [2022-01-19 12:58:31,933 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 88 selfloop transitions, 20 changer transitions 47/304 dead transitions. [2022-01-19 12:58:31,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 304 transitions, 3122 flow [2022-01-19 12:58:31,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 12:58:31,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 12:58:31,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2530 transitions. [2022-01-19 12:58:31,935 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652752571082879 [2022-01-19 12:58:31,935 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2530 transitions. [2022-01-19 12:58:31,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2530 transitions. [2022-01-19 12:58:31,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:31,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2530 transitions. [2022-01-19 12:58:31,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.1578947368421) internal successors, (2530), 19 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:31,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:31,940 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:31,941 INFO L186 Difference]: Start difference. First operand has 363 places, 279 transitions, 2576 flow. Second operand 19 states and 2530 transitions. [2022-01-19 12:58:31,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 304 transitions, 3122 flow [2022-01-19 12:58:32,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 304 transitions, 3009 flow, removed 33 selfloop flow, removed 7 redundant places. [2022-01-19 12:58:32,009 INFO L242 Difference]: Finished difference. Result has 369 places, 255 transitions, 2103 flow [2022-01-19 12:58:32,009 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2471, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2103, PETRI_PLACES=369, PETRI_TRANSITIONS=255} [2022-01-19 12:58:32,009 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 212 predicate places. [2022-01-19 12:58:32,010 INFO L470 AbstractCegarLoop]: Abstraction has has 369 places, 255 transitions, 2103 flow [2022-01-19 12:58:32,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:32,010 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:32,010 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] [2022-01-19 12:58:32,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-19 12:58:32,010 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:32,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:32,011 INFO L85 PathProgramCache]: Analyzing trace with hash 440470920, now seen corresponding path program 33 times [2022-01-19 12:58:32,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:32,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387546605] [2022-01-19 12:58:32,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:32,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:32,122 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 12:58:32,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:32,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387546605] [2022-01-19 12:58:32,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387546605] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:32,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:32,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:32,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447993854] [2022-01-19 12:58:32,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:32,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:32,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:32,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:32,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:32,125 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:32,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 255 transitions, 2103 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:32,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:32,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:32,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:32,658 INFO L129 PetriNetUnfolder]: 282/1628 cut-off events. [2022-01-19 12:58:32,658 INFO L130 PetriNetUnfolder]: For 6620/6692 co-relation queries the response was YES. [2022-01-19 12:58:32,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5694 conditions, 1628 events. 282/1628 cut-off events. For 6620/6692 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12706 event pairs, 220 based on Foata normal form. 1/1566 useless extension candidates. Maximal degree in co-relation 5576. Up to 716 conditions per place. [2022-01-19 12:58:32,671 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 70 selfloop transitions, 28 changer transitions 41/288 dead transitions. [2022-01-19 12:58:32,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 288 transitions, 2775 flow [2022-01-19 12:58:32,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 12:58:32,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 12:58:32,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2915 transitions. [2022-01-19 12:58:32,673 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7614942528735632 [2022-01-19 12:58:32,673 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2915 transitions. [2022-01-19 12:58:32,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2915 transitions. [2022-01-19 12:58:32,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:32,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2915 transitions. [2022-01-19 12:58:32,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.5) internal successors, (2915), 22 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:32,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:32,677 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:32,677 INFO L186 Difference]: Start difference. First operand has 369 places, 255 transitions, 2103 flow. Second operand 22 states and 2915 transitions. [2022-01-19 12:58:32,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 288 transitions, 2775 flow [2022-01-19 12:58:32,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 288 transitions, 2571 flow, removed 27 selfloop flow, removed 24 redundant places. [2022-01-19 12:58:32,722 INFO L242 Difference]: Finished difference. Result has 347 places, 246 transitions, 1864 flow [2022-01-19 12:58:32,722 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1954, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1864, PETRI_PLACES=347, PETRI_TRANSITIONS=246} [2022-01-19 12:58:32,723 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 190 predicate places. [2022-01-19 12:58:32,723 INFO L470 AbstractCegarLoop]: Abstraction has has 347 places, 246 transitions, 1864 flow [2022-01-19 12:58:32,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:32,723 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:32,723 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] [2022-01-19 12:58:32,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-19 12:58:32,723 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:32,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:32,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1192206660, now seen corresponding path program 34 times [2022-01-19 12:58:32,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:32,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732049763] [2022-01-19 12:58:32,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:32,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:32,830 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 12:58:32,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:32,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732049763] [2022-01-19 12:58:32,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732049763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:32,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:32,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:32,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89336362] [2022-01-19 12:58:32,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:32,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:32,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:32,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:32,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:32,833 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:32,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 246 transitions, 1864 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:32,834 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:32,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:32,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:33,307 INFO L129 PetriNetUnfolder]: 275/1593 cut-off events. [2022-01-19 12:58:33,307 INFO L130 PetriNetUnfolder]: For 5781/5853 co-relation queries the response was YES. [2022-01-19 12:58:33,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5351 conditions, 1593 events. 275/1593 cut-off events. For 5781/5853 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12368 event pairs, 220 based on Foata normal form. 1/1531 useless extension candidates. Maximal degree in co-relation 5240. Up to 712 conditions per place. [2022-01-19 12:58:33,323 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 67 selfloop transitions, 14 changer transitions 44/274 dead transitions. [2022-01-19 12:58:33,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 274 transitions, 2409 flow [2022-01-19 12:58:33,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 12:58:33,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 12:58:33,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2785 transitions. [2022-01-19 12:58:33,326 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621784345922277 [2022-01-19 12:58:33,326 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2785 transitions. [2022-01-19 12:58:33,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2785 transitions. [2022-01-19 12:58:33,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:33,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2785 transitions. [2022-01-19 12:58:33,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.61904761904762) internal successors, (2785), 21 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:33,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:33,331 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:33,331 INFO L186 Difference]: Start difference. First operand has 347 places, 246 transitions, 1864 flow. Second operand 21 states and 2785 transitions. [2022-01-19 12:58:33,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 274 transitions, 2409 flow [2022-01-19 12:58:33,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 274 transitions, 2230 flow, removed 33 selfloop flow, removed 25 redundant places. [2022-01-19 12:58:33,368 INFO L242 Difference]: Finished difference. Result has 330 places, 229 transitions, 1499 flow [2022-01-19 12:58:33,369 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1499, PETRI_PLACES=330, PETRI_TRANSITIONS=229} [2022-01-19 12:58:33,369 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 173 predicate places. [2022-01-19 12:58:33,369 INFO L470 AbstractCegarLoop]: Abstraction has has 330 places, 229 transitions, 1499 flow [2022-01-19 12:58:33,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:33,369 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:33,370 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] [2022-01-19 12:58:33,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-19 12:58:33,370 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:33,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:33,370 INFO L85 PathProgramCache]: Analyzing trace with hash -261161542, now seen corresponding path program 35 times [2022-01-19 12:58:33,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:33,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717546937] [2022-01-19 12:58:33,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:33,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:33,479 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 12:58:33,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:33,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717546937] [2022-01-19 12:58:33,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717546937] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:33,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:33,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:33,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551895416] [2022-01-19 12:58:33,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:33,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:33,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:33,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:33,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:33,482 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:33,482 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 229 transitions, 1499 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:33,483 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:33,483 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:33,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:33,976 INFO L129 PetriNetUnfolder]: 263/1517 cut-off events. [2022-01-19 12:58:33,976 INFO L130 PetriNetUnfolder]: For 4839/4911 co-relation queries the response was YES. [2022-01-19 12:58:33,986 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4854 conditions, 1517 events. 263/1517 cut-off events. For 4839/4911 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 11531 event pairs, 218 based on Foata normal form. 1/1457 useless extension candidates. Maximal degree in co-relation 4754. Up to 690 conditions per place. [2022-01-19 12:58:33,989 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 51 selfloop transitions, 2 changer transitions 51/249 dead transitions. [2022-01-19 12:58:33,989 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 249 transitions, 1864 flow [2022-01-19 12:58:33,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 12:58:33,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 12:58:33,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2645 transitions. [2022-01-19 12:58:33,991 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2022-01-19 12:58:33,991 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2645 transitions. [2022-01-19 12:58:33,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2645 transitions. [2022-01-19 12:58:33,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:33,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2645 transitions. [2022-01-19 12:58:33,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.25) internal successors, (2645), 20 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:33,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:33,996 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:33,996 INFO L186 Difference]: Start difference. First operand has 330 places, 229 transitions, 1499 flow. Second operand 20 states and 2645 transitions. [2022-01-19 12:58:33,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 249 transitions, 1864 flow [2022-01-19 12:58:34,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 249 transitions, 1754 flow, removed 23 selfloop flow, removed 23 redundant places. [2022-01-19 12:58:34,066 INFO L242 Difference]: Finished difference. Result has 306 places, 198 transitions, 1011 flow [2022-01-19 12:58:34,067 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1011, PETRI_PLACES=306, PETRI_TRANSITIONS=198} [2022-01-19 12:58:34,067 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 149 predicate places. [2022-01-19 12:58:34,067 INFO L470 AbstractCegarLoop]: Abstraction has has 306 places, 198 transitions, 1011 flow [2022-01-19 12:58:34,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:34,068 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:34,068 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] [2022-01-19 12:58:34,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-19 12:58:34,068 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:34,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:34,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1087007612, now seen corresponding path program 1 times [2022-01-19 12:58:34,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:34,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350725946] [2022-01-19 12:58:34,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:34,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:34,163 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 12:58:34,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:34,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350725946] [2022-01-19 12:58:34,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350725946] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:34,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:34,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:34,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203630835] [2022-01-19 12:58:34,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:34,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:34,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:34,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:34,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:34,166 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:34,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 198 transitions, 1011 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:34,167 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:34,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:34,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:34,614 INFO L129 PetriNetUnfolder]: 327/1614 cut-off events. [2022-01-19 12:58:34,615 INFO L130 PetriNetUnfolder]: For 5252/5323 co-relation queries the response was YES. [2022-01-19 12:58:34,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5145 conditions, 1614 events. 327/1614 cut-off events. For 5252/5323 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11978 event pairs, 181 based on Foata normal form. 2/1544 useless extension candidates. Maximal degree in co-relation 5057. Up to 597 conditions per place. [2022-01-19 12:58:34,634 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 80 selfloop transitions, 14 changer transitions 32/272 dead transitions. [2022-01-19 12:58:34,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 272 transitions, 1942 flow [2022-01-19 12:58:34,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 12:58:34,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 12:58:34,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2926 transitions. [2022-01-19 12:58:34,637 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-01-19 12:58:34,637 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2926 transitions. [2022-01-19 12:58:34,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2926 transitions. [2022-01-19 12:58:34,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:34,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2926 transitions. [2022-01-19 12:58:34,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 133.0) internal successors, (2926), 22 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:34,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:34,642 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:34,643 INFO L186 Difference]: Start difference. First operand has 306 places, 198 transitions, 1011 flow. Second operand 22 states and 2926 transitions. [2022-01-19 12:58:34,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 272 transitions, 1942 flow [2022-01-19 12:58:34,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 272 transitions, 1870 flow, removed 24 selfloop flow, removed 27 redundant places. [2022-01-19 12:58:34,669 INFO L242 Difference]: Finished difference. Result has 278 places, 211 transitions, 1151 flow [2022-01-19 12:58:34,670 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1151, PETRI_PLACES=278, PETRI_TRANSITIONS=211} [2022-01-19 12:58:34,670 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 121 predicate places. [2022-01-19 12:58:34,670 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 211 transitions, 1151 flow [2022-01-19 12:58:34,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:34,671 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:34,671 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] [2022-01-19 12:58:34,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-19 12:58:34,671 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:34,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:34,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1783627810, now seen corresponding path program 2 times [2022-01-19 12:58:34,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:34,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459820629] [2022-01-19 12:58:34,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:34,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:34,764 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 12:58:34,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:34,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459820629] [2022-01-19 12:58:34,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459820629] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:34,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:34,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:34,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799507123] [2022-01-19 12:58:34,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:34,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:34,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:34,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:34,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:34,767 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:34,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 211 transitions, 1151 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:34,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:34,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:34,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:35,310 INFO L129 PetriNetUnfolder]: 323/1608 cut-off events. [2022-01-19 12:58:35,311 INFO L130 PetriNetUnfolder]: For 11061/11126 co-relation queries the response was YES. [2022-01-19 12:58:35,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6298 conditions, 1608 events. 323/1608 cut-off events. For 11061/11126 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11935 event pairs, 170 based on Foata normal form. 2/1547 useless extension candidates. Maximal degree in co-relation 6215. Up to 542 conditions per place. [2022-01-19 12:58:35,325 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 122 selfloop transitions, 12 changer transitions 46/326 dead transitions. [2022-01-19 12:58:35,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 326 transitions, 2691 flow [2022-01-19 12:58:35,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-19 12:58:35,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-01-19 12:58:35,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4111 transitions. [2022-01-19 12:58:35,327 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621431219873934 [2022-01-19 12:58:35,327 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4111 transitions. [2022-01-19 12:58:35,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4111 transitions. [2022-01-19 12:58:35,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:35,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4111 transitions. [2022-01-19 12:58:35,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 132.61290322580646) internal successors, (4111), 31 states have internal predecessors, (4111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:35,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:35,332 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:35,332 INFO L186 Difference]: Start difference. First operand has 278 places, 211 transitions, 1151 flow. Second operand 31 states and 4111 transitions. [2022-01-19 12:58:35,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 326 transitions, 2691 flow [2022-01-19 12:58:35,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 326 transitions, 2253 flow, removed 219 selfloop flow, removed 14 redundant places. [2022-01-19 12:58:35,361 INFO L242 Difference]: Finished difference. Result has 307 places, 214 transitions, 1196 flow [2022-01-19 12:58:35,362 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1196, PETRI_PLACES=307, PETRI_TRANSITIONS=214} [2022-01-19 12:58:35,362 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 150 predicate places. [2022-01-19 12:58:35,362 INFO L470 AbstractCegarLoop]: Abstraction has has 307 places, 214 transitions, 1196 flow [2022-01-19 12:58:35,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:35,362 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:35,363 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] [2022-01-19 12:58:35,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-19 12:58:35,363 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:35,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:35,363 INFO L85 PathProgramCache]: Analyzing trace with hash -758953314, now seen corresponding path program 3 times [2022-01-19 12:58:35,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:35,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046412613] [2022-01-19 12:58:35,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:35,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:35,471 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 12:58:35,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:35,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046412613] [2022-01-19 12:58:35,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046412613] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:35,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:35,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:35,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099613678] [2022-01-19 12:58:35,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:35,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:35,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:35,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:35,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:35,474 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:35,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 214 transitions, 1196 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:35,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:35,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:35,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:36,062 INFO L129 PetriNetUnfolder]: 332/1706 cut-off events. [2022-01-19 12:58:36,062 INFO L130 PetriNetUnfolder]: For 10637/10702 co-relation queries the response was YES. [2022-01-19 12:58:36,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6519 conditions, 1706 events. 332/1706 cut-off events. For 10637/10702 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13008 event pairs, 157 based on Foata normal form. 2/1654 useless extension candidates. Maximal degree in co-relation 6423. Up to 540 conditions per place. [2022-01-19 12:58:36,076 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 148 selfloop transitions, 10 changer transitions 46/350 dead transitions. [2022-01-19 12:58:36,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 350 transitions, 3074 flow [2022-01-19 12:58:36,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 12:58:36,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 12:58:36,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3982 transitions. [2022-01-19 12:58:36,079 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628352490421456 [2022-01-19 12:58:36,079 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3982 transitions. [2022-01-19 12:58:36,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3982 transitions. [2022-01-19 12:58:36,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:36,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3982 transitions. [2022-01-19 12:58:36,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 132.73333333333332) internal successors, (3982), 30 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:36,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 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 12:58:36,084 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 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 12:58:36,084 INFO L186 Difference]: Start difference. First operand has 307 places, 214 transitions, 1196 flow. Second operand 30 states and 3982 transitions. [2022-01-19 12:58:36,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 350 transitions, 3074 flow [2022-01-19 12:58:36,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 350 transitions, 2790 flow, removed 120 selfloop flow, removed 21 redundant places. [2022-01-19 12:58:36,118 INFO L242 Difference]: Finished difference. Result has 321 places, 218 transitions, 1296 flow [2022-01-19 12:58:36,118 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1296, PETRI_PLACES=321, PETRI_TRANSITIONS=218} [2022-01-19 12:58:36,119 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 164 predicate places. [2022-01-19 12:58:36,119 INFO L470 AbstractCegarLoop]: Abstraction has has 321 places, 218 transitions, 1296 flow [2022-01-19 12:58:36,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:36,119 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:36,120 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] [2022-01-19 12:58:36,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-19 12:58:36,120 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:36,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:36,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1874127164, now seen corresponding path program 4 times [2022-01-19 12:58:36,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:36,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757643060] [2022-01-19 12:58:36,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:36,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:36,231 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 12:58:36,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:36,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757643060] [2022-01-19 12:58:36,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757643060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:36,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:36,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:36,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485730505] [2022-01-19 12:58:36,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:36,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:36,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:36,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:36,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:36,234 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:36,235 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 218 transitions, 1296 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:36,235 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:36,235 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:36,235 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:36,662 INFO L129 PetriNetUnfolder]: 327/1663 cut-off events. [2022-01-19 12:58:36,662 INFO L130 PetriNetUnfolder]: For 14540/14611 co-relation queries the response was YES. [2022-01-19 12:58:36,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7012 conditions, 1663 events. 327/1663 cut-off events. For 14540/14611 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12528 event pairs, 194 based on Foata normal form. 2/1598 useless extension candidates. Maximal degree in co-relation 6907. Up to 655 conditions per place. [2022-01-19 12:58:36,678 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 96 selfloop transitions, 22 changer transitions 23/287 dead transitions. [2022-01-19 12:58:36,678 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 287 transitions, 2562 flow [2022-01-19 12:58:36,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 12:58:36,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 12:58:36,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2529 transitions. [2022-01-19 12:58:36,679 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.76497277676951 [2022-01-19 12:58:36,679 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2529 transitions. [2022-01-19 12:58:36,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2529 transitions. [2022-01-19 12:58:36,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:36,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2529 transitions. [2022-01-19 12:58:36,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.10526315789474) internal successors, (2529), 19 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:36,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:36,683 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:36,683 INFO L186 Difference]: Start difference. First operand has 321 places, 218 transitions, 1296 flow. Second operand 19 states and 2529 transitions. [2022-01-19 12:58:36,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 287 transitions, 2562 flow [2022-01-19 12:58:36,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 287 transitions, 2280 flow, removed 140 selfloop flow, removed 21 redundant places. [2022-01-19 12:58:36,727 INFO L242 Difference]: Finished difference. Result has 309 places, 232 transitions, 1515 flow [2022-01-19 12:58:36,727 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1515, PETRI_PLACES=309, PETRI_TRANSITIONS=232} [2022-01-19 12:58:36,727 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 152 predicate places. [2022-01-19 12:58:36,727 INFO L470 AbstractCegarLoop]: Abstraction has has 309 places, 232 transitions, 1515 flow [2022-01-19 12:58:36,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:36,728 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:36,728 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] [2022-01-19 12:58:36,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-19 12:58:36,728 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:36,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:36,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1567922580, now seen corresponding path program 5 times [2022-01-19 12:58:36,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:36,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130661928] [2022-01-19 12:58:36,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:36,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:36,833 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 12:58:36,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:36,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130661928] [2022-01-19 12:58:36,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130661928] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:36,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:36,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:36,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910620678] [2022-01-19 12:58:36,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:36,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:36,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:36,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:36,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:36,836 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:36,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 232 transitions, 1515 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:36,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:36,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:36,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:37,449 INFO L129 PetriNetUnfolder]: 363/1768 cut-off events. [2022-01-19 12:58:37,449 INFO L130 PetriNetUnfolder]: For 12156/12224 co-relation queries the response was YES. [2022-01-19 12:58:37,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7455 conditions, 1768 events. 363/1768 cut-off events. For 12156/12224 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13498 event pairs, 212 based on Foata normal form. 3/1705 useless extension candidates. Maximal degree in co-relation 7356. Up to 661 conditions per place. [2022-01-19 12:58:37,464 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 118 selfloop transitions, 17 changer transitions 40/321 dead transitions. [2022-01-19 12:58:37,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 321 transitions, 3124 flow [2022-01-19 12:58:37,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 12:58:37,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 12:58:37,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3580 transitions. [2022-01-19 12:58:37,466 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7620263942103023 [2022-01-19 12:58:37,466 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3580 transitions. [2022-01-19 12:58:37,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3580 transitions. [2022-01-19 12:58:37,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:37,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3580 transitions. [2022-01-19 12:58:37,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.59259259259258) internal successors, (3580), 27 states have internal predecessors, (3580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:37,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:37,471 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:37,471 INFO L186 Difference]: Start difference. First operand has 309 places, 232 transitions, 1515 flow. Second operand 27 states and 3580 transitions. [2022-01-19 12:58:37,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 321 transitions, 3124 flow [2022-01-19 12:58:37,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 321 transitions, 2915 flow, removed 83 selfloop flow, removed 8 redundant places. [2022-01-19 12:58:37,512 INFO L242 Difference]: Finished difference. Result has 341 places, 244 transitions, 1677 flow [2022-01-19 12:58:37,512 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1677, PETRI_PLACES=341, PETRI_TRANSITIONS=244} [2022-01-19 12:58:37,512 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 184 predicate places. [2022-01-19 12:58:37,512 INFO L470 AbstractCegarLoop]: Abstraction has has 341 places, 244 transitions, 1677 flow [2022-01-19 12:58:37,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:37,513 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:37,513 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] [2022-01-19 12:58:37,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-19 12:58:37,513 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:37,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:37,513 INFO L85 PathProgramCache]: Analyzing trace with hash -22442538, now seen corresponding path program 6 times [2022-01-19 12:58:37,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:37,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145311406] [2022-01-19 12:58:37,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:37,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:37,616 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 12:58:37,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:37,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145311406] [2022-01-19 12:58:37,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145311406] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:37,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:37,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:37,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949528641] [2022-01-19 12:58:37,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:37,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:37,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:37,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:37,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:37,618 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:37,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 244 transitions, 1677 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:37,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:37,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:37,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:38,145 INFO L129 PetriNetUnfolder]: 370/1826 cut-off events. [2022-01-19 12:58:38,146 INFO L130 PetriNetUnfolder]: For 17586/17660 co-relation queries the response was YES. [2022-01-19 12:58:38,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8270 conditions, 1826 events. 370/1826 cut-off events. For 17586/17660 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14141 event pairs, 210 based on Foata normal form. 2/1763 useless extension candidates. Maximal degree in co-relation 8155. Up to 607 conditions per place. [2022-01-19 12:58:38,165 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 112 selfloop transitions, 25 changer transitions 40/323 dead transitions. [2022-01-19 12:58:38,165 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 323 transitions, 3430 flow [2022-01-19 12:58:38,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-19 12:58:38,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-19 12:58:38,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3449 transitions. [2022-01-19 12:58:38,167 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623784261715296 [2022-01-19 12:58:38,167 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3449 transitions. [2022-01-19 12:58:38,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3449 transitions. [2022-01-19 12:58:38,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:38,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3449 transitions. [2022-01-19 12:58:38,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.65384615384616) internal successors, (3449), 26 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:38,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:38,172 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:38,172 INFO L186 Difference]: Start difference. First operand has 341 places, 244 transitions, 1677 flow. Second operand 26 states and 3449 transitions. [2022-01-19 12:58:38,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 323 transitions, 3430 flow [2022-01-19 12:58:38,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 323 transitions, 3056 flow, removed 187 selfloop flow, removed 16 redundant places. [2022-01-19 12:58:38,227 INFO L242 Difference]: Finished difference. Result has 354 places, 253 transitions, 1874 flow [2022-01-19 12:58:38,228 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1874, PETRI_PLACES=354, PETRI_TRANSITIONS=253} [2022-01-19 12:58:38,228 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 197 predicate places. [2022-01-19 12:58:38,228 INFO L470 AbstractCegarLoop]: Abstraction has has 354 places, 253 transitions, 1874 flow [2022-01-19 12:58:38,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:38,229 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:38,229 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] [2022-01-19 12:58:38,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-19 12:58:38,229 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:38,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:38,229 INFO L85 PathProgramCache]: Analyzing trace with hash 320292718, now seen corresponding path program 7 times [2022-01-19 12:58:38,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:38,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188770042] [2022-01-19 12:58:38,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:38,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:38,337 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 12:58:38,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:38,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188770042] [2022-01-19 12:58:38,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188770042] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:38,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:38,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:38,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42218159] [2022-01-19 12:58:38,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:38,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:38,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:38,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:38,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:38,339 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:38,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 253 transitions, 1874 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:38,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:38,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:38,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:38,914 INFO L129 PetriNetUnfolder]: 370/1821 cut-off events. [2022-01-19 12:58:38,914 INFO L130 PetriNetUnfolder]: For 18832/18930 co-relation queries the response was YES. [2022-01-19 12:58:38,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8434 conditions, 1821 events. 370/1821 cut-off events. For 18832/18930 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14019 event pairs, 234 based on Foata normal form. 5/1751 useless extension candidates. Maximal degree in co-relation 8311. Up to 710 conditions per place. [2022-01-19 12:58:38,935 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 115 selfloop transitions, 35 changer transitions 36/332 dead transitions. [2022-01-19 12:58:38,935 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 332 transitions, 3619 flow [2022-01-19 12:58:38,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-19 12:58:38,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-01-19 12:58:38,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3312 transitions. [2022-01-19 12:58:38,937 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7613793103448275 [2022-01-19 12:58:38,937 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3312 transitions. [2022-01-19 12:58:38,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3312 transitions. [2022-01-19 12:58:38,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:38,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3312 transitions. [2022-01-19 12:58:38,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 132.48) internal successors, (3312), 25 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:38,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:38,944 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:38,944 INFO L186 Difference]: Start difference. First operand has 354 places, 253 transitions, 1874 flow. Second operand 25 states and 3312 transitions. [2022-01-19 12:58:38,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 332 transitions, 3619 flow [2022-01-19 12:58:39,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 332 transitions, 3360 flow, removed 120 selfloop flow, removed 18 redundant places. [2022-01-19 12:58:39,012 INFO L242 Difference]: Finished difference. Result has 362 places, 268 transitions, 2204 flow [2022-01-19 12:58:39,012 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2204, PETRI_PLACES=362, PETRI_TRANSITIONS=268} [2022-01-19 12:58:39,013 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 205 predicate places. [2022-01-19 12:58:39,013 INFO L470 AbstractCegarLoop]: Abstraction has has 362 places, 268 transitions, 2204 flow [2022-01-19 12:58:39,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:39,013 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:39,013 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] [2022-01-19 12:58:39,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-19 12:58:39,014 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:39,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:39,014 INFO L85 PathProgramCache]: Analyzing trace with hash -451418944, now seen corresponding path program 8 times [2022-01-19 12:58:39,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:39,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865689862] [2022-01-19 12:58:39,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:39,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:39,120 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 12:58:39,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:39,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865689862] [2022-01-19 12:58:39,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865689862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:39,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:39,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:39,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268672070] [2022-01-19 12:58:39,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:39,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:39,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:39,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:39,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:39,123 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:39,124 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 268 transitions, 2204 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:39,124 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:39,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:39,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:39,705 INFO L129 PetriNetUnfolder]: 363/1773 cut-off events. [2022-01-19 12:58:39,706 INFO L130 PetriNetUnfolder]: For 16945/17023 co-relation queries the response was YES. [2022-01-19 12:58:39,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8269 conditions, 1773 events. 363/1773 cut-off events. For 16945/17023 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 13673 event pairs, 209 based on Foata normal form. 8/1715 useless extension candidates. Maximal degree in co-relation 8143. Up to 680 conditions per place. [2022-01-19 12:58:39,725 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 127 selfloop transitions, 36 changer transitions 47/356 dead transitions. [2022-01-19 12:58:39,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 356 transitions, 3969 flow [2022-01-19 12:58:39,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 12:58:39,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 12:58:39,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3707 transitions. [2022-01-19 12:58:39,727 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7608784893267652 [2022-01-19 12:58:39,728 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3707 transitions. [2022-01-19 12:58:39,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3707 transitions. [2022-01-19 12:58:39,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:39,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3707 transitions. [2022-01-19 12:58:39,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.39285714285714) internal successors, (3707), 28 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:39,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:39,733 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:39,733 INFO L186 Difference]: Start difference. First operand has 362 places, 268 transitions, 2204 flow. Second operand 28 states and 3707 transitions. [2022-01-19 12:58:39,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 356 transitions, 3969 flow [2022-01-19 12:58:39,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 356 transitions, 3540 flow, removed 190 selfloop flow, removed 16 redundant places. [2022-01-19 12:58:39,817 INFO L242 Difference]: Finished difference. Result has 378 places, 268 transitions, 2153 flow [2022-01-19 12:58:39,817 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1996, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2153, PETRI_PLACES=378, PETRI_TRANSITIONS=268} [2022-01-19 12:58:39,817 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 221 predicate places. [2022-01-19 12:58:39,818 INFO L470 AbstractCegarLoop]: Abstraction has has 378 places, 268 transitions, 2153 flow [2022-01-19 12:58:39,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:39,818 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:39,818 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] [2022-01-19 12:58:39,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-19 12:58:39,818 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:39,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:39,819 INFO L85 PathProgramCache]: Analyzing trace with hash 255408086, now seen corresponding path program 9 times [2022-01-19 12:58:39,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:39,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032794466] [2022-01-19 12:58:39,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:39,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:39,929 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 12:58:39,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:39,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032794466] [2022-01-19 12:58:39,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032794466] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:39,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:39,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:39,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558880278] [2022-01-19 12:58:39,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:39,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:39,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:39,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:39,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:39,932 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:39,932 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 268 transitions, 2153 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:39,933 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:39,933 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:39,933 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:40,440 INFO L129 PetriNetUnfolder]: 363/1782 cut-off events. [2022-01-19 12:58:40,440 INFO L130 PetriNetUnfolder]: For 15233/15335 co-relation queries the response was YES. [2022-01-19 12:58:40,453 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7997 conditions, 1782 events. 363/1782 cut-off events. For 15233/15335 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 13708 event pairs, 214 based on Foata normal form. 10/1721 useless extension candidates. Maximal degree in co-relation 7865. Up to 704 conditions per place. [2022-01-19 12:58:40,456 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 116 selfloop transitions, 37 changer transitions 31/330 dead transitions. [2022-01-19 12:58:40,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 330 transitions, 3388 flow [2022-01-19 12:58:40,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 12:58:40,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 12:58:40,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2657 transitions. [2022-01-19 12:58:40,458 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635057471264368 [2022-01-19 12:58:40,458 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2657 transitions. [2022-01-19 12:58:40,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2657 transitions. [2022-01-19 12:58:40,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:40,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2657 transitions. [2022-01-19 12:58:40,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.85) internal successors, (2657), 20 states have internal predecessors, (2657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:40,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:40,462 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:40,462 INFO L186 Difference]: Start difference. First operand has 378 places, 268 transitions, 2153 flow. Second operand 20 states and 2657 transitions. [2022-01-19 12:58:40,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 330 transitions, 3388 flow [2022-01-19 12:58:40,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 330 transitions, 3195 flow, removed 66 selfloop flow, removed 21 redundant places. [2022-01-19 12:58:40,525 INFO L242 Difference]: Finished difference. Result has 365 places, 268 transitions, 2150 flow [2022-01-19 12:58:40,525 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2054, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2150, PETRI_PLACES=365, PETRI_TRANSITIONS=268} [2022-01-19 12:58:40,525 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 208 predicate places. [2022-01-19 12:58:40,525 INFO L470 AbstractCegarLoop]: Abstraction has has 365 places, 268 transitions, 2150 flow [2022-01-19 12:58:40,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:40,526 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:40,526 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] [2022-01-19 12:58:40,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-19 12:58:40,526 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:40,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:40,526 INFO L85 PathProgramCache]: Analyzing trace with hash -340988818, now seen corresponding path program 10 times [2022-01-19 12:58:40,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:40,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106182671] [2022-01-19 12:58:40,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:40,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:40,622 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 12:58:40,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:40,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106182671] [2022-01-19 12:58:40,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106182671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:40,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:40,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:40,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022698289] [2022-01-19 12:58:40,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:40,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:40,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:40,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:40,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:40,625 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:40,626 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 268 transitions, 2150 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:40,626 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:40,626 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:40,626 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:41,125 INFO L129 PetriNetUnfolder]: 339/1696 cut-off events. [2022-01-19 12:58:41,125 INFO L130 PetriNetUnfolder]: For 13443/13523 co-relation queries the response was YES. [2022-01-19 12:58:41,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7507 conditions, 1696 events. 339/1696 cut-off events. For 13443/13523 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12870 event pairs, 201 based on Foata normal form. 8/1640 useless extension candidates. Maximal degree in co-relation 7385. Up to 677 conditions per place. [2022-01-19 12:58:41,143 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 112 selfloop transitions, 20 changer transitions 44/322 dead transitions. [2022-01-19 12:58:41,143 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 322 transitions, 3188 flow [2022-01-19 12:58:41,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 12:58:41,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 12:58:41,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3172 transitions. [2022-01-19 12:58:41,145 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7595785440613027 [2022-01-19 12:58:41,145 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3172 transitions. [2022-01-19 12:58:41,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3172 transitions. [2022-01-19 12:58:41,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:41,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3172 transitions. [2022-01-19 12:58:41,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.16666666666666) internal successors, (3172), 24 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:41,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:41,150 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:41,150 INFO L186 Difference]: Start difference. First operand has 365 places, 268 transitions, 2150 flow. Second operand 24 states and 3172 transitions. [2022-01-19 12:58:41,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 322 transitions, 3188 flow [2022-01-19 12:58:41,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 322 transitions, 3064 flow, removed 21 selfloop flow, removed 14 redundant places. [2022-01-19 12:58:41,211 INFO L242 Difference]: Finished difference. Result has 372 places, 247 transitions, 1816 flow [2022-01-19 12:58:41,212 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2060, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1816, PETRI_PLACES=372, PETRI_TRANSITIONS=247} [2022-01-19 12:58:41,212 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 215 predicate places. [2022-01-19 12:58:41,212 INFO L470 AbstractCegarLoop]: Abstraction has has 372 places, 247 transitions, 1816 flow [2022-01-19 12:58:41,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:41,212 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:41,212 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] [2022-01-19 12:58:41,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-19 12:58:41,213 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:41,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:41,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1804455082, now seen corresponding path program 11 times [2022-01-19 12:58:41,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:41,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710734871] [2022-01-19 12:58:41,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:41,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:41,328 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 12:58:41,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:41,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710734871] [2022-01-19 12:58:41,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710734871] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:41,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:41,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:41,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51632754] [2022-01-19 12:58:41,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:41,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:41,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:41,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:41,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:41,330 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:41,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 247 transitions, 1816 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:41,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:41,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:41,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:41,820 INFO L129 PetriNetUnfolder]: 338/1684 cut-off events. [2022-01-19 12:58:41,821 INFO L130 PetriNetUnfolder]: For 13925/14001 co-relation queries the response was YES. [2022-01-19 12:58:41,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7538 conditions, 1684 events. 338/1684 cut-off events. For 13925/14001 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12728 event pairs, 210 based on Foata normal form. 4/1622 useless extension candidates. Maximal degree in co-relation 7413. Up to 677 conditions per place. [2022-01-19 12:58:41,839 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 30 changer transitions 27/303 dead transitions. [2022-01-19 12:58:41,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 303 transitions, 3027 flow [2022-01-19 12:58:41,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 12:58:41,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 12:58:41,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2919 transitions. [2022-01-19 12:58:41,841 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762539184952978 [2022-01-19 12:58:41,841 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2919 transitions. [2022-01-19 12:58:41,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2919 transitions. [2022-01-19 12:58:41,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:41,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2919 transitions. [2022-01-19 12:58:41,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.6818181818182) internal successors, (2919), 22 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:41,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:41,845 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:41,845 INFO L186 Difference]: Start difference. First operand has 372 places, 247 transitions, 1816 flow. Second operand 22 states and 2919 transitions. [2022-01-19 12:58:41,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 303 transitions, 3027 flow [2022-01-19 12:58:41,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 303 transitions, 2791 flow, removed 52 selfloop flow, removed 23 redundant places. [2022-01-19 12:58:41,901 INFO L242 Difference]: Finished difference. Result has 349 places, 259 transitions, 2024 flow [2022-01-19 12:58:41,901 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1704, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2024, PETRI_PLACES=349, PETRI_TRANSITIONS=259} [2022-01-19 12:58:41,902 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 192 predicate places. [2022-01-19 12:58:41,902 INFO L470 AbstractCegarLoop]: Abstraction has has 349 places, 259 transitions, 2024 flow [2022-01-19 12:58:41,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:41,902 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:41,902 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] [2022-01-19 12:58:41,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-19 12:58:41,902 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:41,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:41,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1740779910, now seen corresponding path program 12 times [2022-01-19 12:58:41,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:41,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814336318] [2022-01-19 12:58:41,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:41,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:42,002 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 12:58:42,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:42,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814336318] [2022-01-19 12:58:42,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814336318] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:42,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:42,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:42,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933569402] [2022-01-19 12:58:42,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:42,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:42,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:42,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:42,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:42,004 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:42,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 259 transitions, 2024 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:42,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:42,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:42,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:42,525 INFO L129 PetriNetUnfolder]: 351/1751 cut-off events. [2022-01-19 12:58:42,525 INFO L130 PetriNetUnfolder]: For 13028/13117 co-relation queries the response was YES. [2022-01-19 12:58:42,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7549 conditions, 1751 events. 351/1751 cut-off events. For 13028/13117 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13319 event pairs, 231 based on Foata normal form. 4/1682 useless extension candidates. Maximal degree in co-relation 7432. Up to 679 conditions per place. [2022-01-19 12:58:42,543 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 106 selfloop transitions, 38 changer transitions 27/317 dead transitions. [2022-01-19 12:58:42,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 317 transitions, 3266 flow [2022-01-19 12:58:42,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 12:58:42,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 12:58:42,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2662 transitions. [2022-01-19 12:58:42,545 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649425287356322 [2022-01-19 12:58:42,545 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2662 transitions. [2022-01-19 12:58:42,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2662 transitions. [2022-01-19 12:58:42,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:42,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2662 transitions. [2022-01-19 12:58:42,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.1) internal successors, (2662), 20 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:42,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:42,549 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:42,549 INFO L186 Difference]: Start difference. First operand has 349 places, 259 transitions, 2024 flow. Second operand 20 states and 2662 transitions. [2022-01-19 12:58:42,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 317 transitions, 3266 flow [2022-01-19 12:58:42,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 317 transitions, 3066 flow, removed 92 selfloop flow, removed 5 redundant places. [2022-01-19 12:58:42,606 INFO L242 Difference]: Finished difference. Result has 365 places, 271 transitions, 2241 flow [2022-01-19 12:58:42,606 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2241, PETRI_PLACES=365, PETRI_TRANSITIONS=271} [2022-01-19 12:58:42,607 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 208 predicate places. [2022-01-19 12:58:42,607 INFO L470 AbstractCegarLoop]: Abstraction has has 365 places, 271 transitions, 2241 flow [2022-01-19 12:58:42,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:42,607 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:42,607 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] [2022-01-19 12:58:42,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-19 12:58:42,607 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:42,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:42,608 INFO L85 PathProgramCache]: Analyzing trace with hash -687421056, now seen corresponding path program 13 times [2022-01-19 12:58:42,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:42,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780944592] [2022-01-19 12:58:42,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:42,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:42,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:58:42,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:42,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780944592] [2022-01-19 12:58:42,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780944592] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:42,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:42,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:42,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824949250] [2022-01-19 12:58:42,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:42,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:42,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:42,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:42,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:42,728 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:42,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 271 transitions, 2241 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:42,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:42,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:42,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:43,220 INFO L129 PetriNetUnfolder]: 346/1747 cut-off events. [2022-01-19 12:58:43,220 INFO L130 PetriNetUnfolder]: For 13255/13344 co-relation queries the response was YES. [2022-01-19 12:58:43,237 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7552 conditions, 1747 events. 346/1747 cut-off events. For 13255/13344 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13300 event pairs, 231 based on Foata normal form. 4/1678 useless extension candidates. Maximal degree in co-relation 7426. Up to 679 conditions per place. [2022-01-19 12:58:43,241 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 110 selfloop transitions, 37 changer transitions 29/322 dead transitions. [2022-01-19 12:58:43,241 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 322 transitions, 3409 flow [2022-01-19 12:58:43,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 12:58:43,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 12:58:43,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2792 transitions. [2022-01-19 12:58:43,243 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7640941434044882 [2022-01-19 12:58:43,243 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2792 transitions. [2022-01-19 12:58:43,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2792 transitions. [2022-01-19 12:58:43,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:43,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2792 transitions. [2022-01-19 12:58:43,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.95238095238096) internal successors, (2792), 21 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:43,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:43,247 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:43,247 INFO L186 Difference]: Start difference. First operand has 365 places, 271 transitions, 2241 flow. Second operand 21 states and 2792 transitions. [2022-01-19 12:58:43,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 322 transitions, 3409 flow [2022-01-19 12:58:43,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 322 transitions, 3287 flow, removed 37 selfloop flow, removed 8 redundant places. [2022-01-19 12:58:43,315 INFO L242 Difference]: Finished difference. Result has 380 places, 278 transitions, 2421 flow [2022-01-19 12:58:43,315 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2156, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2421, PETRI_PLACES=380, PETRI_TRANSITIONS=278} [2022-01-19 12:58:43,315 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 223 predicate places. [2022-01-19 12:58:43,315 INFO L470 AbstractCegarLoop]: Abstraction has has 380 places, 278 transitions, 2421 flow [2022-01-19 12:58:43,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:43,316 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:43,316 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] [2022-01-19 12:58:43,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-19 12:58:43,316 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:43,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:43,316 INFO L85 PathProgramCache]: Analyzing trace with hash -926526690, now seen corresponding path program 14 times [2022-01-19 12:58:43,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:43,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424659625] [2022-01-19 12:58:43,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:43,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:43,416 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 12:58:43,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:43,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424659625] [2022-01-19 12:58:43,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424659625] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:43,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:43,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:43,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034098768] [2022-01-19 12:58:43,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:43,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:43,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:43,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:43,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:43,418 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:43,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 278 transitions, 2421 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:43,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:43,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:43,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:43,954 INFO L129 PetriNetUnfolder]: 351/1758 cut-off events. [2022-01-19 12:58:43,954 INFO L130 PetriNetUnfolder]: For 13963/14035 co-relation queries the response was YES. [2022-01-19 12:58:43,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7820 conditions, 1758 events. 351/1758 cut-off events. For 13963/14035 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 13462 event pairs, 211 based on Foata normal form. 4/1695 useless extension candidates. Maximal degree in co-relation 7688. Up to 680 conditions per place. [2022-01-19 12:58:43,978 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 118 selfloop transitions, 37 changer transitions 42/343 dead transitions. [2022-01-19 12:58:43,978 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 343 transitions, 3828 flow [2022-01-19 12:58:43,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-19 12:58:43,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-01-19 12:58:43,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3056 transitions. [2022-01-19 12:58:43,981 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7636181909045477 [2022-01-19 12:58:43,981 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3056 transitions. [2022-01-19 12:58:43,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3056 transitions. [2022-01-19 12:58:43,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:43,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3056 transitions. [2022-01-19 12:58:43,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.8695652173913) internal successors, (3056), 23 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:43,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:43,986 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:43,986 INFO L186 Difference]: Start difference. First operand has 380 places, 278 transitions, 2421 flow. Second operand 23 states and 3056 transitions. [2022-01-19 12:58:43,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 343 transitions, 3828 flow [2022-01-19 12:58:44,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 343 transitions, 3632 flow, removed 71 selfloop flow, removed 7 redundant places. [2022-01-19 12:58:44,061 INFO L242 Difference]: Finished difference. Result has 399 places, 283 transitions, 2547 flow [2022-01-19 12:58:44,061 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2547, PETRI_PLACES=399, PETRI_TRANSITIONS=283} [2022-01-19 12:58:44,061 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 242 predicate places. [2022-01-19 12:58:44,061 INFO L470 AbstractCegarLoop]: Abstraction has has 399 places, 283 transitions, 2547 flow [2022-01-19 12:58:44,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:44,061 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:44,062 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] [2022-01-19 12:58:44,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-19 12:58:44,062 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:44,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:44,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1230332018, now seen corresponding path program 15 times [2022-01-19 12:58:44,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:44,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860250945] [2022-01-19 12:58:44,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:44,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:44,165 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 12:58:44,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:44,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860250945] [2022-01-19 12:58:44,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860250945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:44,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:44,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:44,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773063891] [2022-01-19 12:58:44,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:44,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:44,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:44,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:44,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:44,167 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:44,168 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 283 transitions, 2547 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:44,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:44,168 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:44,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:44,718 INFO L129 PetriNetUnfolder]: 346/1738 cut-off events. [2022-01-19 12:58:44,718 INFO L130 PetriNetUnfolder]: For 14838/14910 co-relation queries the response was YES. [2022-01-19 12:58:44,735 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7828 conditions, 1738 events. 346/1738 cut-off events. For 14838/14910 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13293 event pairs, 211 based on Foata normal form. 4/1675 useless extension candidates. Maximal degree in co-relation 7688. Up to 675 conditions per place. [2022-01-19 12:58:44,739 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 115 selfloop transitions, 39 changer transitions 40/340 dead transitions. [2022-01-19 12:58:44,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 340 transitions, 3770 flow [2022-01-19 12:58:44,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 12:58:44,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 12:58:44,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3187 transitions. [2022-01-19 12:58:44,741 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631704980842912 [2022-01-19 12:58:44,741 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3187 transitions. [2022-01-19 12:58:44,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3187 transitions. [2022-01-19 12:58:44,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:44,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3187 transitions. [2022-01-19 12:58:44,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.79166666666666) internal successors, (3187), 24 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:44,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:44,745 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:44,745 INFO L186 Difference]: Start difference. First operand has 399 places, 283 transitions, 2547 flow. Second operand 24 states and 3187 transitions. [2022-01-19 12:58:44,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 340 transitions, 3770 flow [2022-01-19 12:58:44,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 340 transitions, 3568 flow, removed 53 selfloop flow, removed 17 redundant places. [2022-01-19 12:58:44,826 INFO L242 Difference]: Finished difference. Result has 404 places, 282 transitions, 2533 flow [2022-01-19 12:58:44,826 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2415, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2533, PETRI_PLACES=404, PETRI_TRANSITIONS=282} [2022-01-19 12:58:44,827 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 247 predicate places. [2022-01-19 12:58:44,827 INFO L470 AbstractCegarLoop]: Abstraction has has 404 places, 282 transitions, 2533 flow [2022-01-19 12:58:44,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:44,827 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:44,827 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] [2022-01-19 12:58:44,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-19 12:58:44,828 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:44,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:44,828 INFO L85 PathProgramCache]: Analyzing trace with hash -256361978, now seen corresponding path program 16 times [2022-01-19 12:58:44,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:44,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629836737] [2022-01-19 12:58:44,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:44,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:44,926 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 12:58:44,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:44,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629836737] [2022-01-19 12:58:44,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629836737] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:44,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:44,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:44,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322211095] [2022-01-19 12:58:44,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:44,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:44,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:44,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:44,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:44,928 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:44,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 282 transitions, 2533 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:44,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:44,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:44,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:45,442 INFO L129 PetriNetUnfolder]: 337/1697 cut-off events. [2022-01-19 12:58:45,442 INFO L130 PetriNetUnfolder]: For 14048/14120 co-relation queries the response was YES. [2022-01-19 12:58:45,454 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7574 conditions, 1697 events. 337/1697 cut-off events. For 14048/14120 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12902 event pairs, 214 based on Foata normal form. 4/1633 useless extension candidates. Maximal degree in co-relation 7434. Up to 687 conditions per place. [2022-01-19 12:58:45,457 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 110 selfloop transitions, 28 changer transitions 34/318 dead transitions. [2022-01-19 12:58:45,457 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 318 transitions, 3345 flow [2022-01-19 12:58:45,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 12:58:45,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 12:58:45,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2659 transitions. [2022-01-19 12:58:45,459 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764080459770115 [2022-01-19 12:58:45,459 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2659 transitions. [2022-01-19 12:58:45,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2659 transitions. [2022-01-19 12:58:45,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:45,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2659 transitions. [2022-01-19 12:58:45,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.95) internal successors, (2659), 20 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:45,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:45,462 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:45,463 INFO L186 Difference]: Start difference. First operand has 404 places, 282 transitions, 2533 flow. Second operand 20 states and 2659 transitions. [2022-01-19 12:58:45,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 318 transitions, 3345 flow [2022-01-19 12:58:45,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 318 transitions, 3168 flow, removed 39 selfloop flow, removed 19 redundant places. [2022-01-19 12:58:45,533 INFO L242 Difference]: Finished difference. Result has 397 places, 271 transitions, 2268 flow [2022-01-19 12:58:45,533 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2391, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2268, PETRI_PLACES=397, PETRI_TRANSITIONS=271} [2022-01-19 12:58:45,534 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 240 predicate places. [2022-01-19 12:58:45,534 INFO L470 AbstractCegarLoop]: Abstraction has has 397 places, 271 transitions, 2268 flow [2022-01-19 12:58:45,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:45,534 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:45,534 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] [2022-01-19 12:58:45,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-19 12:58:45,534 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:45,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:45,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1480476274, now seen corresponding path program 17 times [2022-01-19 12:58:45,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:45,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096369238] [2022-01-19 12:58:45,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:45,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:45,620 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 12:58:45,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:45,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096369238] [2022-01-19 12:58:45,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096369238] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:45,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:45,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:45,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267540339] [2022-01-19 12:58:45,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:45,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:45,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:45,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:45,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:45,622 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:45,623 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 271 transitions, 2268 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:45,623 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:45,623 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:45,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:46,091 INFO L129 PetriNetUnfolder]: 330/1701 cut-off events. [2022-01-19 12:58:46,091 INFO L130 PetriNetUnfolder]: For 13073/13156 co-relation queries the response was YES. [2022-01-19 12:58:46,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7208 conditions, 1701 events. 330/1701 cut-off events. For 13073/13156 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12938 event pairs, 226 based on Foata normal form. 4/1634 useless extension candidates. Maximal degree in co-relation 7074. Up to 674 conditions per place. [2022-01-19 12:58:46,110 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 20 changer transitions 36/302 dead transitions. [2022-01-19 12:58:46,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 302 transitions, 2948 flow [2022-01-19 12:58:46,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 12:58:46,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 12:58:46,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2527 transitions. [2022-01-19 12:58:46,112 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-01-19 12:58:46,112 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2527 transitions. [2022-01-19 12:58:46,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2527 transitions. [2022-01-19 12:58:46,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:46,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2527 transitions. [2022-01-19 12:58:46,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.0) internal successors, (2527), 19 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:46,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:46,116 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:46,116 INFO L186 Difference]: Start difference. First operand has 397 places, 271 transitions, 2268 flow. Second operand 19 states and 2527 transitions. [2022-01-19 12:58:46,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 302 transitions, 2948 flow [2022-01-19 12:58:46,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 302 transitions, 2783 flow, removed 25 selfloop flow, removed 23 redundant places. [2022-01-19 12:58:46,179 INFO L242 Difference]: Finished difference. Result has 379 places, 253 transitions, 1898 flow [2022-01-19 12:58:46,179 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2134, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1898, PETRI_PLACES=379, PETRI_TRANSITIONS=253} [2022-01-19 12:58:46,179 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 222 predicate places. [2022-01-19 12:58:46,179 INFO L470 AbstractCegarLoop]: Abstraction has has 379 places, 253 transitions, 1898 flow [2022-01-19 12:58:46,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:46,180 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:46,180 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] [2022-01-19 12:58:46,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-19 12:58:46,180 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:46,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:46,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1311043862, now seen corresponding path program 18 times [2022-01-19 12:58:46,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:46,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867904729] [2022-01-19 12:58:46,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:46,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:46,285 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 12:58:46,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:46,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867904729] [2022-01-19 12:58:46,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867904729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:46,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:46,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:46,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283555477] [2022-01-19 12:58:46,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:46,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:46,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:46,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:46,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:46,288 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:46,288 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 253 transitions, 1898 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:46,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:46,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:46,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:46,843 INFO L129 PetriNetUnfolder]: 307/1600 cut-off events. [2022-01-19 12:58:46,843 INFO L130 PetriNetUnfolder]: For 11653/11725 co-relation queries the response was YES. [2022-01-19 12:58:46,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6679 conditions, 1600 events. 307/1600 cut-off events. For 11653/11725 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11990 event pairs, 204 based on Foata normal form. 4/1539 useless extension candidates. Maximal degree in co-relation 6554. Up to 651 conditions per place. [2022-01-19 12:58:46,867 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 89 selfloop transitions, 6 changer transitions 37/278 dead transitions. [2022-01-19 12:58:46,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 278 transitions, 2433 flow [2022-01-19 12:58:46,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 12:58:46,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 12:58:46,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2644 transitions. [2022-01-19 12:58:46,869 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7597701149425288 [2022-01-19 12:58:46,869 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2644 transitions. [2022-01-19 12:58:46,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2644 transitions. [2022-01-19 12:58:46,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:46,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2644 transitions. [2022-01-19 12:58:46,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.2) internal successors, (2644), 20 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:46,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:46,872 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:46,872 INFO L186 Difference]: Start difference. First operand has 379 places, 253 transitions, 1898 flow. Second operand 20 states and 2644 transitions. [2022-01-19 12:58:46,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 278 transitions, 2433 flow [2022-01-19 12:58:46,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 278 transitions, 2302 flow, removed 19 selfloop flow, removed 24 redundant places. [2022-01-19 12:58:46,929 INFO L242 Difference]: Finished difference. Result has 357 places, 228 transitions, 1466 flow [2022-01-19 12:58:46,929 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1785, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1466, PETRI_PLACES=357, PETRI_TRANSITIONS=228} [2022-01-19 12:58:46,929 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 200 predicate places. [2022-01-19 12:58:46,929 INFO L470 AbstractCegarLoop]: Abstraction has has 357 places, 228 transitions, 1466 flow [2022-01-19 12:58:46,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:46,930 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:46,930 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] [2022-01-19 12:58:46,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-19 12:58:46,930 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:46,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:46,931 INFO L85 PathProgramCache]: Analyzing trace with hash 692010612, now seen corresponding path program 19 times [2022-01-19 12:58:46,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:46,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986152809] [2022-01-19 12:58:46,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:46,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:47,033 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 12:58:47,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:47,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986152809] [2022-01-19 12:58:47,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986152809] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:47,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:47,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:47,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939561468] [2022-01-19 12:58:47,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:47,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:47,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:47,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:47,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:47,035 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:47,035 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 228 transitions, 1466 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:47,035 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:47,035 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:47,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:47,682 INFO L129 PetriNetUnfolder]: 321/1637 cut-off events. [2022-01-19 12:58:47,682 INFO L130 PetriNetUnfolder]: For 11799/11867 co-relation queries the response was YES. [2022-01-19 12:58:47,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6866 conditions, 1637 events. 321/1637 cut-off events. For 11799/11867 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12269 event pairs, 185 based on Foata normal form. 2/1577 useless extension candidates. Maximal degree in co-relation 6748. Up to 596 conditions per place. [2022-01-19 12:58:47,701 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 30 changer transitions 38/321 dead transitions. [2022-01-19 12:58:47,701 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 321 transitions, 3122 flow [2022-01-19 12:58:47,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 12:58:47,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 12:58:47,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3703 transitions. [2022-01-19 12:58:47,704 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2022-01-19 12:58:47,704 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3703 transitions. [2022-01-19 12:58:47,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3703 transitions. [2022-01-19 12:58:47,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:47,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3703 transitions. [2022-01-19 12:58:47,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.25) internal successors, (3703), 28 states have internal predecessors, (3703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:47,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:47,710 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:47,710 INFO L186 Difference]: Start difference. First operand has 357 places, 228 transitions, 1466 flow. Second operand 28 states and 3703 transitions. [2022-01-19 12:58:47,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 321 transitions, 3122 flow [2022-01-19 12:58:47,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 321 transitions, 2944 flow, removed 38 selfloop flow, removed 20 redundant places. [2022-01-19 12:58:47,755 INFO L242 Difference]: Finished difference. Result has 346 places, 243 transitions, 1756 flow [2022-01-19 12:58:47,756 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1756, PETRI_PLACES=346, PETRI_TRANSITIONS=243} [2022-01-19 12:58:47,756 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 189 predicate places. [2022-01-19 12:58:47,756 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 243 transitions, 1756 flow [2022-01-19 12:58:47,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:47,757 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:47,757 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] [2022-01-19 12:58:47,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-19 12:58:47,757 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:47,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:47,757 INFO L85 PathProgramCache]: Analyzing trace with hash 420148042, now seen corresponding path program 20 times [2022-01-19 12:58:47,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:47,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500424576] [2022-01-19 12:58:47,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:47,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:47,864 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 12:58:47,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:47,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500424576] [2022-01-19 12:58:47,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500424576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:47,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:47,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:47,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157332144] [2022-01-19 12:58:47,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:47,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:47,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:47,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:47,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:47,866 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:47,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 243 transitions, 1756 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:47,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:47,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:47,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:48,409 INFO L129 PetriNetUnfolder]: 322/1624 cut-off events. [2022-01-19 12:58:48,410 INFO L130 PetriNetUnfolder]: For 11125/11193 co-relation queries the response was YES. [2022-01-19 12:58:48,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6954 conditions, 1624 events. 322/1624 cut-off events. For 11125/11193 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12201 event pairs, 192 based on Foata normal form. 2/1557 useless extension candidates. Maximal degree in co-relation 6833. Up to 603 conditions per place. [2022-01-19 12:58:48,435 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 34 changer transitions 35/315 dead transitions. [2022-01-19 12:58:48,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 315 transitions, 3237 flow [2022-01-19 12:58:48,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-19 12:58:48,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-19 12:58:48,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3446 transitions. [2022-01-19 12:58:48,437 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617152961980548 [2022-01-19 12:58:48,437 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3446 transitions. [2022-01-19 12:58:48,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3446 transitions. [2022-01-19 12:58:48,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:48,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3446 transitions. [2022-01-19 12:58:48,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.53846153846155) internal successors, (3446), 26 states have internal predecessors, (3446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:48,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:48,444 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:48,444 INFO L186 Difference]: Start difference. First operand has 346 places, 243 transitions, 1756 flow. Second operand 26 states and 3446 transitions. [2022-01-19 12:58:48,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 315 transitions, 3237 flow [2022-01-19 12:58:48,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 315 transitions, 3052 flow, removed 73 selfloop flow, removed 15 redundant places. [2022-01-19 12:58:48,511 INFO L242 Difference]: Finished difference. Result has 359 places, 257 transitions, 2074 flow [2022-01-19 12:58:48,511 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2074, PETRI_PLACES=359, PETRI_TRANSITIONS=257} [2022-01-19 12:58:48,512 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 202 predicate places. [2022-01-19 12:58:48,512 INFO L470 AbstractCegarLoop]: Abstraction has has 359 places, 257 transitions, 2074 flow [2022-01-19 12:58:48,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:48,512 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:48,512 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] [2022-01-19 12:58:48,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-19 12:58:48,512 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:48,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:48,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1942395372, now seen corresponding path program 21 times [2022-01-19 12:58:48,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:48,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686472502] [2022-01-19 12:58:48,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:48,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:48,621 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 12:58:48,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:48,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686472502] [2022-01-19 12:58:48,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686472502] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:48,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:48,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:48,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929037796] [2022-01-19 12:58:48,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:48,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:48,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:48,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:48,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:48,624 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:48,625 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 257 transitions, 2074 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:48,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:48,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:48,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:49,195 INFO L129 PetriNetUnfolder]: 318/1627 cut-off events. [2022-01-19 12:58:49,196 INFO L130 PetriNetUnfolder]: For 12778/12846 co-relation queries the response was YES. [2022-01-19 12:58:49,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7160 conditions, 1627 events. 318/1627 cut-off events. For 12778/12846 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12249 event pairs, 190 based on Foata normal form. 2/1562 useless extension candidates. Maximal degree in co-relation 7032. Up to 601 conditions per place. [2022-01-19 12:58:49,216 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 104 selfloop transitions, 36 changer transitions 39/325 dead transitions. [2022-01-19 12:58:49,216 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 325 transitions, 3501 flow [2022-01-19 12:58:49,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 12:58:49,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 12:58:49,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3575 transitions. [2022-01-19 12:58:49,218 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609621115368241 [2022-01-19 12:58:49,218 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3575 transitions. [2022-01-19 12:58:49,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3575 transitions. [2022-01-19 12:58:49,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:49,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3575 transitions. [2022-01-19 12:58:49,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.40740740740742) internal successors, (3575), 27 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:49,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:49,223 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:49,223 INFO L186 Difference]: Start difference. First operand has 359 places, 257 transitions, 2074 flow. Second operand 27 states and 3575 transitions. [2022-01-19 12:58:49,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 325 transitions, 3501 flow [2022-01-19 12:58:49,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 325 transitions, 3245 flow, removed 108 selfloop flow, removed 16 redundant places. [2022-01-19 12:58:49,288 INFO L242 Difference]: Finished difference. Result has 372 places, 260 transitions, 2142 flow [2022-01-19 12:58:49,288 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2142, PETRI_PLACES=372, PETRI_TRANSITIONS=260} [2022-01-19 12:58:49,289 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 215 predicate places. [2022-01-19 12:58:49,289 INFO L470 AbstractCegarLoop]: Abstraction has has 372 places, 260 transitions, 2142 flow [2022-01-19 12:58:49,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:49,289 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:49,289 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] [2022-01-19 12:58:49,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-19 12:58:49,289 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:49,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:49,290 INFO L85 PathProgramCache]: Analyzing trace with hash -2032434546, now seen corresponding path program 22 times [2022-01-19 12:58:49,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:49,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146596942] [2022-01-19 12:58:49,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:49,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:49,383 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 12:58:49,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:49,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146596942] [2022-01-19 12:58:49,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146596942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:49,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:49,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:49,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147039622] [2022-01-19 12:58:49,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:49,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:49,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:49,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:49,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:49,386 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:49,387 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 260 transitions, 2142 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:49,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:49,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:49,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:49,844 INFO L129 PetriNetUnfolder]: 311/1594 cut-off events. [2022-01-19 12:58:49,844 INFO L130 PetriNetUnfolder]: For 12310/12378 co-relation queries the response was YES. [2022-01-19 12:58:49,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6982 conditions, 1594 events. 311/1594 cut-off events. For 12310/12378 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11960 event pairs, 181 based on Foata normal form. 2/1533 useless extension candidates. Maximal degree in co-relation 6849. Up to 603 conditions per place. [2022-01-19 12:58:49,864 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 109 selfloop transitions, 39 changer transitions 31/325 dead transitions. [2022-01-19 12:58:49,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 325 transitions, 3439 flow [2022-01-19 12:58:49,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 12:58:49,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 12:58:49,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2920 transitions. [2022-01-19 12:58:49,866 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628004179728317 [2022-01-19 12:58:49,866 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2920 transitions. [2022-01-19 12:58:49,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2920 transitions. [2022-01-19 12:58:49,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:49,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2920 transitions. [2022-01-19 12:58:49,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.72727272727272) internal successors, (2920), 22 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:49,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:49,872 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:49,872 INFO L186 Difference]: Start difference. First operand has 372 places, 260 transitions, 2142 flow. Second operand 22 states and 2920 transitions. [2022-01-19 12:58:49,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 325 transitions, 3439 flow [2022-01-19 12:58:49,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 325 transitions, 3189 flow, removed 87 selfloop flow, removed 19 redundant places. [2022-01-19 12:58:49,939 INFO L242 Difference]: Finished difference. Result has 368 places, 267 transitions, 2238 flow [2022-01-19 12:58:49,940 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1984, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2238, PETRI_PLACES=368, PETRI_TRANSITIONS=267} [2022-01-19 12:58:49,940 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 211 predicate places. [2022-01-19 12:58:49,940 INFO L470 AbstractCegarLoop]: Abstraction has has 368 places, 267 transitions, 2238 flow [2022-01-19 12:58:49,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:49,940 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:49,941 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] [2022-01-19 12:58:49,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-19 12:58:49,941 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:49,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:49,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1971432700, now seen corresponding path program 23 times [2022-01-19 12:58:49,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:49,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108281779] [2022-01-19 12:58:49,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:49,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:50,029 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 12:58:50,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:50,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108281779] [2022-01-19 12:58:50,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108281779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:50,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:50,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:50,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968610438] [2022-01-19 12:58:50,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:50,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:50,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:50,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:50,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:50,031 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:50,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 267 transitions, 2238 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:50,032 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:50,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:50,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:50,509 INFO L129 PetriNetUnfolder]: 315/1602 cut-off events. [2022-01-19 12:58:50,509 INFO L130 PetriNetUnfolder]: For 11225/11293 co-relation queries the response was YES. [2022-01-19 12:58:50,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7018 conditions, 1602 events. 315/1602 cut-off events. For 11225/11293 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11979 event pairs, 191 based on Foata normal form. 2/1536 useless extension candidates. Maximal degree in co-relation 6891. Up to 605 conditions per place. [2022-01-19 12:58:50,528 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 103 selfloop transitions, 46 changer transitions 30/325 dead transitions. [2022-01-19 12:58:50,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 325 transitions, 3441 flow [2022-01-19 12:58:50,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 12:58:50,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 12:58:50,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2792 transitions. [2022-01-19 12:58:50,530 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7640941434044882 [2022-01-19 12:58:50,530 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2792 transitions. [2022-01-19 12:58:50,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2792 transitions. [2022-01-19 12:58:50,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:50,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2792 transitions. [2022-01-19 12:58:50,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.95238095238096) internal successors, (2792), 21 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:50,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:50,534 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:50,534 INFO L186 Difference]: Start difference. First operand has 368 places, 267 transitions, 2238 flow. Second operand 21 states and 2792 transitions. [2022-01-19 12:58:50,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 325 transitions, 3441 flow [2022-01-19 12:58:50,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 325 transitions, 3330 flow, removed 40 selfloop flow, removed 7 redundant places. [2022-01-19 12:58:50,604 INFO L242 Difference]: Finished difference. Result has 382 places, 277 transitions, 2486 flow [2022-01-19 12:58:50,604 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2158, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2486, PETRI_PLACES=382, PETRI_TRANSITIONS=277} [2022-01-19 12:58:50,605 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 225 predicate places. [2022-01-19 12:58:50,605 INFO L470 AbstractCegarLoop]: Abstraction has has 382 places, 277 transitions, 2486 flow [2022-01-19 12:58:50,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:50,605 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:50,605 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] [2022-01-19 12:58:50,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-19 12:58:50,606 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:50,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:50,606 INFO L85 PathProgramCache]: Analyzing trace with hash 319486182, now seen corresponding path program 24 times [2022-01-19 12:58:50,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:50,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369464154] [2022-01-19 12:58:50,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:50,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:50,696 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 12:58:50,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:50,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369464154] [2022-01-19 12:58:50,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369464154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:50,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:50,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:50,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130758819] [2022-01-19 12:58:50,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:50,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:50,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:50,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:50,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:50,698 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:50,699 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 277 transitions, 2486 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:50,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:50,699 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:50,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:51,181 INFO L129 PetriNetUnfolder]: 311/1605 cut-off events. [2022-01-19 12:58:51,181 INFO L130 PetriNetUnfolder]: For 11604/11672 co-relation queries the response was YES. [2022-01-19 12:58:51,196 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7081 conditions, 1605 events. 311/1605 cut-off events. For 11604/11672 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12055 event pairs, 186 based on Foata normal form. 2/1540 useless extension candidates. Maximal degree in co-relation 6947. Up to 603 conditions per place. [2022-01-19 12:58:51,200 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 111 selfloop transitions, 41 changer transitions 31/329 dead transitions. [2022-01-19 12:58:51,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 329 transitions, 3666 flow [2022-01-19 12:58:51,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 12:58:51,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 12:58:51,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2923 transitions. [2022-01-19 12:58:51,201 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635841170323929 [2022-01-19 12:58:51,202 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2923 transitions. [2022-01-19 12:58:51,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2923 transitions. [2022-01-19 12:58:51,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:51,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2923 transitions. [2022-01-19 12:58:51,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.86363636363637) internal successors, (2923), 22 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:51,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:51,205 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:51,205 INFO L186 Difference]: Start difference. First operand has 382 places, 277 transitions, 2486 flow. Second operand 22 states and 2923 transitions. [2022-01-19 12:58:51,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 329 transitions, 3666 flow [2022-01-19 12:58:51,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 329 transitions, 3515 flow, removed 46 selfloop flow, removed 9 redundant places. [2022-01-19 12:58:51,290 INFO L242 Difference]: Finished difference. Result has 395 places, 281 transitions, 2595 flow [2022-01-19 12:58:51,290 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2375, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2595, PETRI_PLACES=395, PETRI_TRANSITIONS=281} [2022-01-19 12:58:51,291 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 238 predicate places. [2022-01-19 12:58:51,291 INFO L470 AbstractCegarLoop]: Abstraction has has 395 places, 281 transitions, 2595 flow [2022-01-19 12:58:51,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:51,291 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:51,291 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] [2022-01-19 12:58:51,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-19 12:58:51,292 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:51,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:51,292 INFO L85 PathProgramCache]: Analyzing trace with hash -859212732, now seen corresponding path program 25 times [2022-01-19 12:58:51,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:51,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999955376] [2022-01-19 12:58:51,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:51,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:51,378 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 12:58:51,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:51,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999955376] [2022-01-19 12:58:51,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999955376] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:51,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:51,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:51,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784663052] [2022-01-19 12:58:51,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:51,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:51,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:51,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:51,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:51,381 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:51,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 281 transitions, 2595 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:51,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:51,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:51,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:51,967 INFO L129 PetriNetUnfolder]: 317/1623 cut-off events. [2022-01-19 12:58:51,967 INFO L130 PetriNetUnfolder]: For 12486/12554 co-relation queries the response was YES. [2022-01-19 12:58:51,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7322 conditions, 1623 events. 317/1623 cut-off events. For 12486/12554 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12202 event pairs, 185 based on Foata normal form. 2/1556 useless extension candidates. Maximal degree in co-relation 7183. Up to 605 conditions per place. [2022-01-19 12:58:51,996 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 103 selfloop transitions, 56 changer transitions 28/333 dead transitions. [2022-01-19 12:58:51,996 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 333 transitions, 3854 flow [2022-01-19 12:58:51,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 12:58:51,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 12:58:51,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2022-01-19 12:58:51,998 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2022-01-19 12:58:51,998 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2022-01-19 12:58:51,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2022-01-19 12:58:51,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:51,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2022-01-19 12:58:52,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:52,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:52,003 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:52,004 INFO L186 Difference]: Start difference. First operand has 395 places, 281 transitions, 2595 flow. Second operand 20 states and 2663 transitions. [2022-01-19 12:58:52,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 333 transitions, 3854 flow [2022-01-19 12:58:52,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 333 transitions, 3703 flow, removed 58 selfloop flow, removed 7 redundant places. [2022-01-19 12:58:52,125 INFO L242 Difference]: Finished difference. Result has 409 places, 293 transitions, 2931 flow [2022-01-19 12:58:52,126 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2931, PETRI_PLACES=409, PETRI_TRANSITIONS=293} [2022-01-19 12:58:52,126 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 252 predicate places. [2022-01-19 12:58:52,126 INFO L470 AbstractCegarLoop]: Abstraction has has 409 places, 293 transitions, 2931 flow [2022-01-19 12:58:52,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:52,126 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:52,127 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] [2022-01-19 12:58:52,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-19 12:58:52,127 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:52,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:52,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1691902910, now seen corresponding path program 26 times [2022-01-19 12:58:52,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:52,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300043945] [2022-01-19 12:58:52,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:52,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:52,234 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 12:58:52,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:52,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300043945] [2022-01-19 12:58:52,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300043945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:52,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:52,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:52,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700994356] [2022-01-19 12:58:52,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:52,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:52,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:52,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:52,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:52,237 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:52,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 293 transitions, 2931 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:52,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:52,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:52,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:52,767 INFO L129 PetriNetUnfolder]: 321/1633 cut-off events. [2022-01-19 12:58:52,767 INFO L130 PetriNetUnfolder]: For 13269/13337 co-relation queries the response was YES. [2022-01-19 12:58:52,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7610 conditions, 1633 events. 321/1633 cut-off events. For 13269/13337 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12298 event pairs, 187 based on Foata normal form. 2/1564 useless extension candidates. Maximal degree in co-relation 7463. Up to 607 conditions per place. [2022-01-19 12:58:52,789 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 123 selfloop transitions, 46 changer transitions 28/343 dead transitions. [2022-01-19 12:58:52,789 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 343 transitions, 4256 flow [2022-01-19 12:58:52,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 12:58:52,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 12:58:52,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2924 transitions. [2022-01-19 12:58:52,791 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638453500522466 [2022-01-19 12:58:52,791 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2924 transitions. [2022-01-19 12:58:52,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2924 transitions. [2022-01-19 12:58:52,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:52,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2924 transitions. [2022-01-19 12:58:52,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.9090909090909) internal successors, (2924), 22 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:52,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:52,795 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:52,795 INFO L186 Difference]: Start difference. First operand has 409 places, 293 transitions, 2931 flow. Second operand 22 states and 2924 transitions. [2022-01-19 12:58:52,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 343 transitions, 4256 flow [2022-01-19 12:58:52,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 343 transitions, 4020 flow, removed 70 selfloop flow, removed 9 redundant places. [2022-01-19 12:58:52,894 INFO L242 Difference]: Finished difference. Result has 422 places, 305 transitions, 3167 flow [2022-01-19 12:58:52,894 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2741, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3167, PETRI_PLACES=422, PETRI_TRANSITIONS=305} [2022-01-19 12:58:52,894 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 265 predicate places. [2022-01-19 12:58:52,894 INFO L470 AbstractCegarLoop]: Abstraction has has 422 places, 305 transitions, 3167 flow [2022-01-19 12:58:52,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:52,895 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:52,895 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] [2022-01-19 12:58:52,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-19 12:58:52,895 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:52,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:52,895 INFO L85 PathProgramCache]: Analyzing trace with hash 179737798, now seen corresponding path program 27 times [2022-01-19 12:58:52,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:52,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535786615] [2022-01-19 12:58:52,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:52,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:53,007 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 12:58:53,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:53,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535786615] [2022-01-19 12:58:53,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535786615] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:53,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:53,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:53,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402721670] [2022-01-19 12:58:53,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:53,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:53,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:53,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:53,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:53,009 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:53,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 305 transitions, 3167 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:53,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:53,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:53,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:53,540 INFO L129 PetriNetUnfolder]: 316/1633 cut-off events. [2022-01-19 12:58:53,540 INFO L130 PetriNetUnfolder]: For 13511/13579 co-relation queries the response was YES. [2022-01-19 12:58:53,557 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7563 conditions, 1633 events. 316/1633 cut-off events. For 13511/13579 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12307 event pairs, 182 based on Foata normal form. 2/1566 useless extension candidates. Maximal degree in co-relation 7412. Up to 605 conditions per place. [2022-01-19 12:58:53,561 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 126 selfloop transitions, 48 changer transitions 30/350 dead transitions. [2022-01-19 12:58:53,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 350 transitions, 4435 flow [2022-01-19 12:58:53,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 12:58:53,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 12:58:53,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2797 transitions. [2022-01-19 12:58:53,562 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7654625068418172 [2022-01-19 12:58:53,563 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2797 transitions. [2022-01-19 12:58:53,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2797 transitions. [2022-01-19 12:58:53,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:53,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2797 transitions. [2022-01-19 12:58:53,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 133.1904761904762) internal successors, (2797), 21 states have internal predecessors, (2797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:53,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:53,566 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:53,566 INFO L186 Difference]: Start difference. First operand has 422 places, 305 transitions, 3167 flow. Second operand 21 states and 2797 transitions. [2022-01-19 12:58:53,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 350 transitions, 4435 flow [2022-01-19 12:58:53,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 350 transitions, 4164 flow, removed 116 selfloop flow, removed 6 redundant places. [2022-01-19 12:58:53,701 INFO L242 Difference]: Finished difference. Result has 437 places, 312 transitions, 3294 flow [2022-01-19 12:58:53,701 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2991, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3294, PETRI_PLACES=437, PETRI_TRANSITIONS=312} [2022-01-19 12:58:53,701 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 280 predicate places. [2022-01-19 12:58:53,701 INFO L470 AbstractCegarLoop]: Abstraction has has 437 places, 312 transitions, 3294 flow [2022-01-19 12:58:53,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:53,702 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:53,702 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 12:58:53,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-19 12:58:53,702 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:53,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:53,702 INFO L85 PathProgramCache]: Analyzing trace with hash -876895094, now seen corresponding path program 28 times [2022-01-19 12:58:53,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:53,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78722914] [2022-01-19 12:58:53,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:53,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:53,785 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 12:58:53,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:53,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78722914] [2022-01-19 12:58:53,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78722914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:53,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:53,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:53,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059424961] [2022-01-19 12:58:53,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:53,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:53,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:53,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:53,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:53,787 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:53,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 312 transitions, 3294 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:53,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:53,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:53,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:54,318 INFO L129 PetriNetUnfolder]: 308/1618 cut-off events. [2022-01-19 12:58:54,318 INFO L130 PetriNetUnfolder]: For 12695/12763 co-relation queries the response was YES. [2022-01-19 12:58:54,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7343 conditions, 1618 events. 308/1618 cut-off events. For 12695/12763 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12267 event pairs, 179 based on Foata normal form. 2/1557 useless extension candidates. Maximal degree in co-relation 7184. Up to 602 conditions per place. [2022-01-19 12:58:54,341 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 129 selfloop transitions, 36 changer transitions 40/351 dead transitions. [2022-01-19 12:58:54,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 351 transitions, 4167 flow [2022-01-19 12:58:54,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 12:58:54,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 12:58:54,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2400 transitions. [2022-01-19 12:58:54,343 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7662835249042146 [2022-01-19 12:58:54,343 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2400 transitions. [2022-01-19 12:58:54,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2400 transitions. [2022-01-19 12:58:54,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:54,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2400 transitions. [2022-01-19 12:58:54,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.33333333333334) internal successors, (2400), 18 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:54,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:54,346 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:54,346 INFO L186 Difference]: Start difference. First operand has 437 places, 312 transitions, 3294 flow. Second operand 18 states and 2400 transitions. [2022-01-19 12:58:54,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 351 transitions, 4167 flow [2022-01-19 12:58:54,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 351 transitions, 4039 flow, removed 43 selfloop flow, removed 10 redundant places. [2022-01-19 12:58:54,480 INFO L242 Difference]: Finished difference. Result has 439 places, 292 transitions, 2869 flow [2022-01-19 12:58:54,480 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3172, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2869, PETRI_PLACES=439, PETRI_TRANSITIONS=292} [2022-01-19 12:58:54,481 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 282 predicate places. [2022-01-19 12:58:54,481 INFO L470 AbstractCegarLoop]: Abstraction has has 439 places, 292 transitions, 2869 flow [2022-01-19 12:58:54,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:54,481 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:54,481 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] [2022-01-19 12:58:54,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-19 12:58:54,482 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:54,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:54,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1930430014, now seen corresponding path program 29 times [2022-01-19 12:58:54,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:54,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62131851] [2022-01-19 12:58:54,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:54,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:54,601 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 12:58:54,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:54,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62131851] [2022-01-19 12:58:54,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62131851] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:54,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:54,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:54,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967757677] [2022-01-19 12:58:54,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:54,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:54,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:54,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:54,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:54,604 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:54,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 292 transitions, 2869 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:54,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:54,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:54,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:55,129 INFO L129 PetriNetUnfolder]: 303/1602 cut-off events. [2022-01-19 12:58:55,130 INFO L130 PetriNetUnfolder]: For 12308/12376 co-relation queries the response was YES. [2022-01-19 12:58:55,148 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7183 conditions, 1602 events. 303/1602 cut-off events. For 12308/12376 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12116 event pairs, 183 based on Foata normal form. 2/1537 useless extension candidates. Maximal degree in co-relation 7027. Up to 600 conditions per place. [2022-01-19 12:58:55,152 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 120 selfloop transitions, 27 changer transitions 38/331 dead transitions. [2022-01-19 12:58:55,152 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 331 transitions, 3764 flow [2022-01-19 12:58:55,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 12:58:55,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 12:58:55,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2531 transitions. [2022-01-19 12:58:55,154 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655777374470659 [2022-01-19 12:58:55,154 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2531 transitions. [2022-01-19 12:58:55,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2531 transitions. [2022-01-19 12:58:55,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:55,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2531 transitions. [2022-01-19 12:58:55,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.21052631578948) internal successors, (2531), 19 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:55,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:55,159 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:55,159 INFO L186 Difference]: Start difference. First operand has 439 places, 292 transitions, 2869 flow. Second operand 19 states and 2531 transitions. [2022-01-19 12:58:55,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 331 transitions, 3764 flow [2022-01-19 12:58:55,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 331 transitions, 3487 flow, removed 30 selfloop flow, removed 23 redundant places. [2022-01-19 12:58:55,251 INFO L242 Difference]: Finished difference. Result has 417 places, 281 transitions, 2518 flow [2022-01-19 12:58:55,251 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2651, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2518, PETRI_PLACES=417, PETRI_TRANSITIONS=281} [2022-01-19 12:58:55,251 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 260 predicate places. [2022-01-19 12:58:55,252 INFO L470 AbstractCegarLoop]: Abstraction has has 417 places, 281 transitions, 2518 flow [2022-01-19 12:58:55,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:55,252 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:55,252 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] [2022-01-19 12:58:55,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-19 12:58:55,252 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:55,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:55,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1748211298, now seen corresponding path program 30 times [2022-01-19 12:58:55,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:55,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293528394] [2022-01-19 12:58:55,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:55,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:55,352 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 12:58:55,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:55,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293528394] [2022-01-19 12:58:55,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293528394] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:55,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:55,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:55,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685770197] [2022-01-19 12:58:55,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:55,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:55,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:55,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:55,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:55,355 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:55,356 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 281 transitions, 2518 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:55,356 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:55,356 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:55,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:55,902 INFO L129 PetriNetUnfolder]: 288/1544 cut-off events. [2022-01-19 12:58:55,903 INFO L130 PetriNetUnfolder]: For 10362/10430 co-relation queries the response was YES. [2022-01-19 12:58:55,915 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6495 conditions, 1544 events. 288/1544 cut-off events. For 10362/10430 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11548 event pairs, 180 based on Foata normal form. 2/1481 useless extension candidates. Maximal degree in co-relation 6346. Up to 596 conditions per place. [2022-01-19 12:58:55,918 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 109 selfloop transitions, 15 changer transitions 39/309 dead transitions. [2022-01-19 12:58:55,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 309 transitions, 3139 flow [2022-01-19 12:58:55,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 12:58:55,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 12:58:55,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2651 transitions. [2022-01-19 12:58:55,920 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617816091954023 [2022-01-19 12:58:55,920 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2651 transitions. [2022-01-19 12:58:55,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2651 transitions. [2022-01-19 12:58:55,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:55,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2651 transitions. [2022-01-19 12:58:55,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.55) internal successors, (2651), 20 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:55,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:55,923 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:55,923 INFO L186 Difference]: Start difference. First operand has 417 places, 281 transitions, 2518 flow. Second operand 20 states and 2651 transitions. [2022-01-19 12:58:55,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 309 transitions, 3139 flow [2022-01-19 12:58:55,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 309 transitions, 2988 flow, removed 21 selfloop flow, removed 23 redundant places. [2022-01-19 12:58:55,998 INFO L242 Difference]: Finished difference. Result has 400 places, 258 transitions, 2065 flow [2022-01-19 12:58:55,998 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2390, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2065, PETRI_PLACES=400, PETRI_TRANSITIONS=258} [2022-01-19 12:58:55,999 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 243 predicate places. [2022-01-19 12:58:55,999 INFO L470 AbstractCegarLoop]: Abstraction has has 400 places, 258 transitions, 2065 flow [2022-01-19 12:58:55,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:55,999 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:55,999 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] [2022-01-19 12:58:56,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-19 12:58:56,000 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:56,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:56,000 INFO L85 PathProgramCache]: Analyzing trace with hash -839816810, now seen corresponding path program 31 times [2022-01-19 12:58:56,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:56,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38703998] [2022-01-19 12:58:56,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:56,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:56,110 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 12:58:56,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:56,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38703998] [2022-01-19 12:58:56,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38703998] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:56,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:56,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:56,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795184336] [2022-01-19 12:58:56,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:56,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:56,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:56,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:56,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:56,112 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:56,113 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 258 transitions, 2065 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:56,113 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:56,113 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:56,113 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:56,656 INFO L129 PetriNetUnfolder]: 299/1572 cut-off events. [2022-01-19 12:58:56,657 INFO L130 PetriNetUnfolder]: For 10476/10544 co-relation queries the response was YES. [2022-01-19 12:58:56,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6608 conditions, 1572 events. 299/1572 cut-off events. For 10476/10544 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11745 event pairs, 184 based on Foata normal form. 2/1506 useless extension candidates. Maximal degree in co-relation 6468. Up to 596 conditions per place. [2022-01-19 12:58:56,678 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 91 selfloop transitions, 37 changer transitions 39/313 dead transitions. [2022-01-19 12:58:56,678 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 313 transitions, 3183 flow [2022-01-19 12:58:56,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 12:58:56,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 12:58:56,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3188 transitions. [2022-01-19 12:58:56,679 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7634099616858238 [2022-01-19 12:58:56,680 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3188 transitions. [2022-01-19 12:58:56,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3188 transitions. [2022-01-19 12:58:56,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:56,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3188 transitions. [2022-01-19 12:58:56,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.83333333333334) internal successors, (3188), 24 states have internal predecessors, (3188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:56,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:56,684 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:56,684 INFO L186 Difference]: Start difference. First operand has 400 places, 258 transitions, 2065 flow. Second operand 24 states and 3188 transitions. [2022-01-19 12:58:56,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 313 transitions, 3183 flow [2022-01-19 12:58:56,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 313 transitions, 2985 flow, removed 24 selfloop flow, removed 20 redundant places. [2022-01-19 12:58:56,750 INFO L242 Difference]: Finished difference. Result has 386 places, 263 transitions, 2176 flow [2022-01-19 12:58:56,750 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1954, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2176, PETRI_PLACES=386, PETRI_TRANSITIONS=263} [2022-01-19 12:58:56,751 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 229 predicate places. [2022-01-19 12:58:56,751 INFO L470 AbstractCegarLoop]: Abstraction has has 386 places, 263 transitions, 2176 flow [2022-01-19 12:58:56,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:56,751 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:56,751 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] [2022-01-19 12:58:56,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-19 12:58:56,752 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:56,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:56,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1447701686, now seen corresponding path program 32 times [2022-01-19 12:58:56,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:56,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362227187] [2022-01-19 12:58:56,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:56,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:56,863 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 12:58:56,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:56,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362227187] [2022-01-19 12:58:56,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362227187] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:56,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:56,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:56,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116471102] [2022-01-19 12:58:56,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:56,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:56,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:56,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:56,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:56,866 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:56,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 263 transitions, 2176 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:56,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:56,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:56,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:57,424 INFO L129 PetriNetUnfolder]: 294/1570 cut-off events. [2022-01-19 12:58:57,425 INFO L130 PetriNetUnfolder]: For 9845/9913 co-relation queries the response was YES. [2022-01-19 12:58:57,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6400 conditions, 1570 events. 294/1570 cut-off events. For 9845/9913 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11715 event pairs, 179 based on Foata normal form. 2/1504 useless extension candidates. Maximal degree in co-relation 6259. Up to 596 conditions per place. [2022-01-19 12:58:57,443 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 95 selfloop transitions, 32 changer transitions 44/317 dead transitions. [2022-01-19 12:58:57,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 317 transitions, 3274 flow [2022-01-19 12:58:57,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-19 12:58:57,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-01-19 12:58:57,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3057 transitions. [2022-01-19 12:58:57,445 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638680659670165 [2022-01-19 12:58:57,445 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3057 transitions. [2022-01-19 12:58:57,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3057 transitions. [2022-01-19 12:58:57,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:57,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3057 transitions. [2022-01-19 12:58:57,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.91304347826087) internal successors, (3057), 23 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:57,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:57,449 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:57,449 INFO L186 Difference]: Start difference. First operand has 386 places, 263 transitions, 2176 flow. Second operand 23 states and 3057 transitions. [2022-01-19 12:58:57,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 317 transitions, 3274 flow [2022-01-19 12:58:57,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 317 transitions, 3154 flow, removed 42 selfloop flow, removed 14 redundant places. [2022-01-19 12:58:57,521 INFO L242 Difference]: Finished difference. Result has 392 places, 262 transitions, 2194 flow [2022-01-19 12:58:57,521 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2098, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2194, PETRI_PLACES=392, PETRI_TRANSITIONS=262} [2022-01-19 12:58:57,522 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 235 predicate places. [2022-01-19 12:58:57,522 INFO L470 AbstractCegarLoop]: Abstraction has has 392 places, 262 transitions, 2194 flow [2022-01-19 12:58:57,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:57,522 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:57,522 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] [2022-01-19 12:58:57,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-19 12:58:57,523 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:57,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:57,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1224200426, now seen corresponding path program 33 times [2022-01-19 12:58:57,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:57,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556942284] [2022-01-19 12:58:57,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:57,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:57,634 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 12:58:57,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:57,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556942284] [2022-01-19 12:58:57,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556942284] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:57,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:57,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:57,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104950198] [2022-01-19 12:58:57,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:57,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:57,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:57,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:57,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:57,636 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:57,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 262 transitions, 2194 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:57,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:57,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:57,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:58,073 INFO L129 PetriNetUnfolder]: 276/1513 cut-off events. [2022-01-19 12:58:58,073 INFO L130 PetriNetUnfolder]: For 9111/9179 co-relation queries the response was YES. [2022-01-19 12:58:58,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6027 conditions, 1513 events. 276/1513 cut-off events. For 9111/9179 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11269 event pairs, 177 based on Foata normal form. 2/1447 useless extension candidates. Maximal degree in co-relation 5885. Up to 594 conditions per place. [2022-01-19 12:58:58,089 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 83 selfloop transitions, 21 changer transitions 37/287 dead transitions. [2022-01-19 12:58:58,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 287 transitions, 2743 flow [2022-01-19 12:58:58,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 12:58:58,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 12:58:58,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2659 transitions. [2022-01-19 12:58:58,090 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764080459770115 [2022-01-19 12:58:58,090 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2659 transitions. [2022-01-19 12:58:58,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2659 transitions. [2022-01-19 12:58:58,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:58,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2659 transitions. [2022-01-19 12:58:58,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.95) internal successors, (2659), 20 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:58,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:58,094 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:58,094 INFO L186 Difference]: Start difference. First operand has 392 places, 262 transitions, 2194 flow. Second operand 20 states and 2659 transitions. [2022-01-19 12:58:58,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 287 transitions, 2743 flow [2022-01-19 12:58:58,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 287 transitions, 2572 flow, removed 33 selfloop flow, removed 21 redundant places. [2022-01-19 12:58:58,154 INFO L242 Difference]: Finished difference. Result has 383 places, 244 transitions, 1807 flow [2022-01-19 12:58:58,155 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2044, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1807, PETRI_PLACES=383, PETRI_TRANSITIONS=244} [2022-01-19 12:58:58,155 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 226 predicate places. [2022-01-19 12:58:58,155 INFO L470 AbstractCegarLoop]: Abstraction has has 383 places, 244 transitions, 1807 flow [2022-01-19 12:58:58,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:58,155 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:58,155 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] [2022-01-19 12:58:58,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-19 12:58:58,155 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:58,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:58,156 INFO L85 PathProgramCache]: Analyzing trace with hash -267571106, now seen corresponding path program 34 times [2022-01-19 12:58:58,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:58,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867280042] [2022-01-19 12:58:58,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:58,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:58,252 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 12:58:58,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:58,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867280042] [2022-01-19 12:58:58,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867280042] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:58,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:58,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:58,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989228740] [2022-01-19 12:58:58,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:58,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:58,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:58,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:58,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:58,255 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:58,256 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 244 transitions, 1807 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:58,256 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:58,256 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:58,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:58,719 INFO L129 PetriNetUnfolder]: 271/1492 cut-off events. [2022-01-19 12:58:58,720 INFO L130 PetriNetUnfolder]: For 8404/8472 co-relation queries the response was YES. [2022-01-19 12:58:58,735 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5785 conditions, 1492 events. 271/1492 cut-off events. For 8404/8472 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11044 event pairs, 178 based on Foata normal form. 2/1426 useless extension candidates. Maximal degree in co-relation 5652. Up to 592 conditions per place. [2022-01-19 12:58:58,738 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 77 selfloop transitions, 16 changer transitions 36/275 dead transitions. [2022-01-19 12:58:58,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 275 transitions, 2441 flow [2022-01-19 12:58:58,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 12:58:58,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 12:58:58,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2528 transitions. [2022-01-19 12:58:58,739 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764670296430732 [2022-01-19 12:58:58,739 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2528 transitions. [2022-01-19 12:58:58,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2528 transitions. [2022-01-19 12:58:58,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:58,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2528 transitions. [2022-01-19 12:58:58,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.05263157894737) internal successors, (2528), 19 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:58,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:58,743 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:58,743 INFO L186 Difference]: Start difference. First operand has 383 places, 244 transitions, 1807 flow. Second operand 19 states and 2528 transitions. [2022-01-19 12:58:58,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 275 transitions, 2441 flow [2022-01-19 12:58:58,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 275 transitions, 2267 flow, removed 21 selfloop flow, removed 22 redundant places. [2022-01-19 12:58:58,792 INFO L242 Difference]: Finished difference. Result has 361 places, 233 transitions, 1553 flow [2022-01-19 12:58:58,793 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1675, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1553, PETRI_PLACES=361, PETRI_TRANSITIONS=233} [2022-01-19 12:58:58,793 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 204 predicate places. [2022-01-19 12:58:58,793 INFO L470 AbstractCegarLoop]: Abstraction has has 361 places, 233 transitions, 1553 flow [2022-01-19 12:58:58,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:58,793 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:58,793 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] [2022-01-19 12:58:58,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-19 12:58:58,794 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:58,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:58,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1344371362, now seen corresponding path program 35 times [2022-01-19 12:58:58,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:58,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080608744] [2022-01-19 12:58:58,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:58,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:58,898 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 12:58:58,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:58,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080608744] [2022-01-19 12:58:58,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080608744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:58,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:58,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:58:58,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36420100] [2022-01-19 12:58:58,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:58,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:58:58,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:58,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:58:58,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:58:58,900 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 12:58:58,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 233 transitions, 1553 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:58,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:58,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 12:58:58,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:58:59,296 INFO L129 PetriNetUnfolder]: 256/1404 cut-off events. [2022-01-19 12:58:59,296 INFO L130 PetriNetUnfolder]: For 7395/7463 co-relation queries the response was YES. [2022-01-19 12:58:59,308 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5272 conditions, 1404 events. 256/1404 cut-off events. For 7395/7463 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 10231 event pairs, 171 based on Foata normal form. 2/1340 useless extension candidates. Maximal degree in co-relation 5146. Up to 571 conditions per place. [2022-01-19 12:58:59,311 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 66 selfloop transitions, 2 changer transitions 40/252 dead transitions. [2022-01-19 12:58:59,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 252 transitions, 1941 flow [2022-01-19 12:58:59,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 12:58:59,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 12:58:59,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2645 transitions. [2022-01-19 12:58:59,313 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2022-01-19 12:58:59,313 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2645 transitions. [2022-01-19 12:58:59,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2645 transitions. [2022-01-19 12:58:59,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:58:59,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2645 transitions. [2022-01-19 12:58:59,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.25) internal successors, (2645), 20 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:59,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:59,316 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:59,316 INFO L186 Difference]: Start difference. First operand has 361 places, 233 transitions, 1553 flow. Second operand 20 states and 2645 transitions. [2022-01-19 12:58:59,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 252 transitions, 1941 flow [2022-01-19 12:58:59,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 252 transitions, 1834 flow, removed 21 selfloop flow, removed 22 redundant places. [2022-01-19 12:58:59,357 INFO L242 Difference]: Finished difference. Result has 345 places, 206 transitions, 1141 flow [2022-01-19 12:58:59,358 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1141, PETRI_PLACES=345, PETRI_TRANSITIONS=206} [2022-01-19 12:58:59,358 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 188 predicate places. [2022-01-19 12:58:59,358 INFO L470 AbstractCegarLoop]: Abstraction has has 345 places, 206 transitions, 1141 flow [2022-01-19 12:58:59,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:59,358 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:58:59,358 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] [2022-01-19 12:58:59,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-19 12:58:59,359 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:58:59,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:58:59,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1165386839, now seen corresponding path program 1 times [2022-01-19 12:58:59,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:58:59,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061820545] [2022-01-19 12:58:59,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:58:59,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:58:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:58:59,618 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 12:58:59,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:58:59,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061820545] [2022-01-19 12:58:59,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061820545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:58:59,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:58:59,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 12:58:59,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346060985] [2022-01-19 12:58:59,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:58:59,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 12:58:59,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:58:59,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 12:58:59,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-01-19 12:58:59,621 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-01-19 12:58:59,621 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 206 transitions, 1141 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:58:59,621 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:58:59,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-01-19 12:58:59,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:59:01,049 INFO L129 PetriNetUnfolder]: 769/3123 cut-off events. [2022-01-19 12:59:01,049 INFO L130 PetriNetUnfolder]: For 14013/14047 co-relation queries the response was YES. [2022-01-19 12:59:01,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10237 conditions, 3123 events. 769/3123 cut-off events. For 14013/14047 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 25836 event pairs, 277 based on Foata normal form. 27/3032 useless extension candidates. Maximal degree in co-relation 10119. Up to 518 conditions per place. [2022-01-19 12:59:01,080 INFO L132 encePairwiseOnDemand]: 147/174 looper letters, 257 selfloop transitions, 35 changer transitions 60/439 dead transitions. [2022-01-19 12:59:01,080 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 439 transitions, 3413 flow [2022-01-19 12:59:01,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 12:59:01,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 12:59:01,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3042 transitions. [2022-01-19 12:59:01,082 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.624384236453202 [2022-01-19 12:59:01,082 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3042 transitions. [2022-01-19 12:59:01,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3042 transitions. [2022-01-19 12:59:01,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:59:01,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3042 transitions. [2022-01-19 12:59:01,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 108.64285714285714) internal successors, (3042), 28 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:01,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:01,086 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:01,086 INFO L186 Difference]: Start difference. First operand has 345 places, 206 transitions, 1141 flow. Second operand 28 states and 3042 transitions. [2022-01-19 12:59:01,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 439 transitions, 3413 flow [2022-01-19 12:59:01,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 439 transitions, 3223 flow, removed 73 selfloop flow, removed 28 redundant places. [2022-01-19 12:59:01,132 INFO L242 Difference]: Finished difference. Result has 331 places, 214 transitions, 1298 flow [2022-01-19 12:59:01,133 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1298, PETRI_PLACES=331, PETRI_TRANSITIONS=214} [2022-01-19 12:59:01,133 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 174 predicate places. [2022-01-19 12:59:01,133 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 214 transitions, 1298 flow [2022-01-19 12:59:01,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:01,133 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:59:01,134 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] [2022-01-19 12:59:01,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-19 12:59:01,134 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:59:01,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:59:01,134 INFO L85 PathProgramCache]: Analyzing trace with hash -2074009625, now seen corresponding path program 2 times [2022-01-19 12:59:01,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:59:01,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541689974] [2022-01-19 12:59:01,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:59:01,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:59:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:59:01,192 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 12:59:01,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:59:01,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541689974] [2022-01-19 12:59:01,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541689974] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:59:01,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:59:01,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 12:59:01,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656032966] [2022-01-19 12:59:01,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:59:01,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 12:59:01,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:59:01,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 12:59:01,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 12:59:01,195 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-01-19 12:59:01,195 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 214 transitions, 1298 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:01,195 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:59:01,195 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-01-19 12:59:01,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:59:01,392 INFO L129 PetriNetUnfolder]: 121/1138 cut-off events. [2022-01-19 12:59:01,392 INFO L130 PetriNetUnfolder]: For 7057/7098 co-relation queries the response was YES. [2022-01-19 12:59:01,401 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3815 conditions, 1138 events. 121/1138 cut-off events. For 7057/7098 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 7597 event pairs, 66 based on Foata normal form. 28/1126 useless extension candidates. Maximal degree in co-relation 3697. Up to 76 conditions per place. [2022-01-19 12:59:01,403 INFO L132 encePairwiseOnDemand]: 164/174 looper letters, 39 selfloop transitions, 6 changer transitions 28/220 dead transitions. [2022-01-19 12:59:01,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 220 transitions, 1411 flow [2022-01-19 12:59:01,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 12:59:01,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 12:59:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 746 transitions. [2022-01-19 12:59:01,404 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8574712643678161 [2022-01-19 12:59:01,404 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 746 transitions. [2022-01-19 12:59:01,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 746 transitions. [2022-01-19 12:59:01,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:59:01,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 746 transitions. [2022-01-19 12:59:01,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.2) internal successors, (746), 5 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:01,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:01,405 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:01,405 INFO L186 Difference]: Start difference. First operand has 331 places, 214 transitions, 1298 flow. Second operand 5 states and 746 transitions. [2022-01-19 12:59:01,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 220 transitions, 1411 flow [2022-01-19 12:59:01,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 220 transitions, 1222 flow, removed 81 selfloop flow, removed 31 redundant places. [2022-01-19 12:59:01,431 INFO L242 Difference]: Finished difference. Result has 274 places, 187 transitions, 874 flow [2022-01-19 12:59:01,432 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=874, PETRI_PLACES=274, PETRI_TRANSITIONS=187} [2022-01-19 12:59:01,432 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 117 predicate places. [2022-01-19 12:59:01,432 INFO L470 AbstractCegarLoop]: Abstraction has has 274 places, 187 transitions, 874 flow [2022-01-19 12:59:01,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:01,432 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:59:01,432 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 12:59:01,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-19 12:59:01,432 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:59:01,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:59:01,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1146373095, now seen corresponding path program 1 times [2022-01-19 12:59:01,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:59:01,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369009929] [2022-01-19 12:59:01,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:59:01,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:59:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:59:01,516 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 12:59:01,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:59:01,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369009929] [2022-01-19 12:59:01,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369009929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:59:01,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:59:01,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 12:59:01,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420930292] [2022-01-19 12:59:01,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:59:01,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 12:59:01,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:59:01,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 12:59:01,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-19 12:59:01,518 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-01-19 12:59:01,518 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 187 transitions, 874 flow. Second operand has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:01,518 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:59:01,518 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-01-19 12:59:01,518 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:59:01,587 INFO L129 PetriNetUnfolder]: 42/474 cut-off events. [2022-01-19 12:59:01,587 INFO L130 PetriNetUnfolder]: For 1167/1167 co-relation queries the response was YES. [2022-01-19 12:59:01,590 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1211 conditions, 474 events. 42/474 cut-off events. For 1167/1167 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1944 event pairs, 29 based on Foata normal form. 10/461 useless extension candidates. Maximal degree in co-relation 1123. Up to 65 conditions per place. [2022-01-19 12:59:01,591 INFO L132 encePairwiseOnDemand]: 170/174 looper letters, 27 selfloop transitions, 2 changer transitions 0/148 dead transitions. [2022-01-19 12:59:01,591 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 148 transitions, 591 flow [2022-01-19 12:59:01,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 12:59:01,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 12:59:01,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2022-01-19 12:59:01,592 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8524904214559387 [2022-01-19 12:59:01,592 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2022-01-19 12:59:01,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2022-01-19 12:59:01,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:59:01,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2022-01-19 12:59:01,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:01,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:01,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:01,593 INFO L186 Difference]: Start difference. First operand has 274 places, 187 transitions, 874 flow. Second operand 3 states and 445 transitions. [2022-01-19 12:59:01,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 148 transitions, 591 flow [2022-01-19 12:59:01,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 148 transitions, 489 flow, removed 32 selfloop flow, removed 32 redundant places. [2022-01-19 12:59:01,597 INFO L242 Difference]: Finished difference. Result has 207 places, 147 transitions, 432 flow [2022-01-19 12:59:01,597 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=432, PETRI_PLACES=207, PETRI_TRANSITIONS=147} [2022-01-19 12:59:01,598 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 50 predicate places. [2022-01-19 12:59:01,598 INFO L470 AbstractCegarLoop]: Abstraction has has 207 places, 147 transitions, 432 flow [2022-01-19 12:59:01,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:01,598 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:59:01,598 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 12:59:01,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-19 12:59:01,598 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:59:01,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:59:01,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1592495771, now seen corresponding path program 1 times [2022-01-19 12:59:01,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:59:01,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444012735] [2022-01-19 12:59:01,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:59:01,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:59:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:59:02,383 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 12:59:02,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:59:02,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444012735] [2022-01-19 12:59:02,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444012735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:59:02,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:59:02,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-01-19 12:59:02,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549672741] [2022-01-19 12:59:02,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:59:02,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-19 12:59:02,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:59:02,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-19 12:59:02,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=834, Unknown=0, NotChecked=0, Total=930 [2022-01-19 12:59:02,387 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 12:59:02,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 147 transitions, 432 flow. Second operand has 31 states, 31 states have (on average 85.19354838709677) internal successors, (2641), 31 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:02,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:59:02,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 12:59:02,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:59:13,282 INFO L129 PetriNetUnfolder]: 586/1835 cut-off events. [2022-01-19 12:59:13,282 INFO L130 PetriNetUnfolder]: For 2210/2210 co-relation queries the response was YES. [2022-01-19 12:59:13,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4485 conditions, 1835 events. 586/1835 cut-off events. For 2210/2210 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 11013 event pairs, 0 based on Foata normal form. 1/1810 useless extension candidates. Maximal degree in co-relation 4425. Up to 135 conditions per place. [2022-01-19 12:59:13,292 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 342 selfloop transitions, 20 changer transitions 183/616 dead transitions. [2022-01-19 12:59:13,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 616 transitions, 3478 flow [2022-01-19 12:59:13,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-19 12:59:13,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2022-01-19 12:59:13,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 7849 transitions. [2022-01-19 12:59:13,296 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5126044932079414 [2022-01-19 12:59:13,296 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 7849 transitions. [2022-01-19 12:59:13,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 7849 transitions. [2022-01-19 12:59:13,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:59:13,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 7849 transitions. [2022-01-19 12:59:13,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 89.19318181818181) internal successors, (7849), 88 states have internal predecessors, (7849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:13,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:13,308 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:13,308 INFO L186 Difference]: Start difference. First operand has 207 places, 147 transitions, 432 flow. Second operand 88 states and 7849 transitions. [2022-01-19 12:59:13,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 616 transitions, 3478 flow [2022-01-19 12:59:13,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 616 transitions, 3472 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-01-19 12:59:13,318 INFO L242 Difference]: Finished difference. Result has 364 places, 147 transitions, 619 flow [2022-01-19 12:59:13,318 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=619, PETRI_PLACES=364, PETRI_TRANSITIONS=147} [2022-01-19 12:59:13,319 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 207 predicate places. [2022-01-19 12:59:13,319 INFO L470 AbstractCegarLoop]: Abstraction has has 364 places, 147 transitions, 619 flow [2022-01-19 12:59:13,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 85.19354838709677) internal successors, (2641), 31 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:13,319 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:59:13,320 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 12:59:13,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-19 12:59:13,320 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:59:13,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:59:13,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1699720853, now seen corresponding path program 2 times [2022-01-19 12:59:13,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:59:13,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851387403] [2022-01-19 12:59:13,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:59:13,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:59:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:59:13,939 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 12:59:13,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:59:13,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851387403] [2022-01-19 12:59:13,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851387403] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:59:13,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:59:13,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 12:59:13,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590116153] [2022-01-19 12:59:13,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:59:13,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 12:59:13,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:59:13,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 12:59:13,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-01-19 12:59:13,942 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 12:59:13,944 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 147 transitions, 619 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:13,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:59:13,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 12:59:13,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:59:24,411 INFO L129 PetriNetUnfolder]: 889/2794 cut-off events. [2022-01-19 12:59:24,411 INFO L130 PetriNetUnfolder]: For 15773/15773 co-relation queries the response was YES. [2022-01-19 12:59:24,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10511 conditions, 2794 events. 889/2794 cut-off events. For 15773/15773 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 19368 event pairs, 50 based on Foata normal form. 1/2737 useless extension candidates. Maximal degree in co-relation 10380. Up to 895 conditions per place. [2022-01-19 12:59:24,442 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 361 selfloop transitions, 20 changer transitions 160/612 dead transitions. [2022-01-19 12:59:24,442 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 612 transitions, 4872 flow [2022-01-19 12:59:24,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-19 12:59:24,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2022-01-19 12:59:24,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 7845 transitions. [2022-01-19 12:59:24,447 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5123432601880877 [2022-01-19 12:59:24,447 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 7845 transitions. [2022-01-19 12:59:24,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 7845 transitions. [2022-01-19 12:59:24,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:59:24,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 7845 transitions. [2022-01-19 12:59:24,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 89.14772727272727) internal successors, (7845), 88 states have internal predecessors, (7845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:24,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:24,462 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:24,462 INFO L186 Difference]: Start difference. First operand has 364 places, 147 transitions, 619 flow. Second operand 88 states and 7845 transitions. [2022-01-19 12:59:24,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 612 transitions, 4872 flow [2022-01-19 12:59:24,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 612 transitions, 3477 flow, removed 457 selfloop flow, removed 82 redundant places. [2022-01-19 12:59:24,495 INFO L242 Difference]: Finished difference. Result has 383 places, 160 transitions, 851 flow [2022-01-19 12:59:24,496 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=851, PETRI_PLACES=383, PETRI_TRANSITIONS=160} [2022-01-19 12:59:24,496 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 226 predicate places. [2022-01-19 12:59:24,496 INFO L470 AbstractCegarLoop]: Abstraction has has 383 places, 160 transitions, 851 flow [2022-01-19 12:59:24,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:24,496 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:59:24,497 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 12:59:24,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-19 12:59:24,497 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:59:24,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:59:24,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1095220343, now seen corresponding path program 3 times [2022-01-19 12:59:24,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:59:24,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565860247] [2022-01-19 12:59:24,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:59:24,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:59:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:59:25,126 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 12:59:25,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:59:25,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565860247] [2022-01-19 12:59:25,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565860247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:59:25,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:59:25,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 12:59:25,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396864411] [2022-01-19 12:59:25,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:59:25,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 12:59:25,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:59:25,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 12:59:25,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2022-01-19 12:59:25,129 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 12:59:25,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 160 transitions, 851 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:25,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:59:25,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 12:59:25,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:59:40,705 INFO L129 PetriNetUnfolder]: 983/3147 cut-off events. [2022-01-19 12:59:40,705 INFO L130 PetriNetUnfolder]: For 32501/32501 co-relation queries the response was YES. [2022-01-19 12:59:40,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13813 conditions, 3147 events. 983/3147 cut-off events. For 32501/32501 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 22862 event pairs, 24 based on Foata normal form. 1/3114 useless extension candidates. Maximal degree in co-relation 13664. Up to 262 conditions per place. [2022-01-19 12:59:40,740 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 461 selfloop transitions, 25 changer transitions 158/715 dead transitions. [2022-01-19 12:59:40,740 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 715 transitions, 7301 flow [2022-01-19 12:59:40,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-19 12:59:40,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-01-19 12:59:40,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7508 transitions. [2022-01-19 12:59:40,744 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5136836343732896 [2022-01-19 12:59:40,744 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7508 transitions. [2022-01-19 12:59:40,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7508 transitions. [2022-01-19 12:59:40,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:59:40,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7508 transitions. [2022-01-19 12:59:40,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.38095238095238) internal successors, (7508), 84 states have internal predecessors, (7508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:40,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:40,757 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:40,757 INFO L186 Difference]: Start difference. First operand has 383 places, 160 transitions, 851 flow. Second operand 84 states and 7508 transitions. [2022-01-19 12:59:40,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 715 transitions, 7301 flow [2022-01-19 12:59:40,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 715 transitions, 6734 flow, removed 278 selfloop flow, removed 32 redundant places. [2022-01-19 12:59:40,865 INFO L242 Difference]: Finished difference. Result has 432 places, 166 transitions, 1058 flow [2022-01-19 12:59:40,865 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1058, PETRI_PLACES=432, PETRI_TRANSITIONS=166} [2022-01-19 12:59:40,865 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 275 predicate places. [2022-01-19 12:59:40,865 INFO L470 AbstractCegarLoop]: Abstraction has has 432 places, 166 transitions, 1058 flow [2022-01-19 12:59:40,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:40,866 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:59:40,866 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 12:59:40,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-19 12:59:40,866 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:59:40,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:59:40,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1934898097, now seen corresponding path program 4 times [2022-01-19 12:59:40,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:59:40,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877598472] [2022-01-19 12:59:40,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:59:40,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:59:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:59:41,525 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 12:59:41,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:59:41,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877598472] [2022-01-19 12:59:41,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877598472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:59:41,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:59:41,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 12:59:41,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600796139] [2022-01-19 12:59:41,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:59:41,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 12:59:41,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:59:41,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 12:59:41,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2022-01-19 12:59:41,528 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 12:59:41,529 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 166 transitions, 1058 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:41,529 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:59:41,529 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 12:59:41,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:59:52,451 INFO L129 PetriNetUnfolder]: 1379/4285 cut-off events. [2022-01-19 12:59:52,451 INFO L130 PetriNetUnfolder]: For 50605/50605 co-relation queries the response was YES. [2022-01-19 12:59:52,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22066 conditions, 4285 events. 1379/4285 cut-off events. For 50605/50605 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 33928 event pairs, 191 based on Foata normal form. 1/4200 useless extension candidates. Maximal degree in co-relation 21878. Up to 895 conditions per place. [2022-01-19 12:59:52,514 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 412 selfloop transitions, 22 changer transitions 151/656 dead transitions. [2022-01-19 12:59:52,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 656 transitions, 7528 flow [2022-01-19 12:59:52,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-19 12:59:52,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-01-19 12:59:52,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7541 transitions. [2022-01-19 12:59:52,518 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5159414340448824 [2022-01-19 12:59:52,518 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7541 transitions. [2022-01-19 12:59:52,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7541 transitions. [2022-01-19 12:59:52,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:59:52,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7541 transitions. [2022-01-19 12:59:52,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.77380952380952) internal successors, (7541), 84 states have internal predecessors, (7541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:52,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:52,531 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:52,532 INFO L186 Difference]: Start difference. First operand has 432 places, 166 transitions, 1058 flow. Second operand 84 states and 7541 transitions. [2022-01-19 12:59:52,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 656 transitions, 7528 flow [2022-01-19 12:59:52,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 656 transitions, 6432 flow, removed 462 selfloop flow, removed 69 redundant places. [2022-01-19 12:59:52,717 INFO L242 Difference]: Finished difference. Result has 458 places, 177 transitions, 1295 flow [2022-01-19 12:59:52,718 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1295, PETRI_PLACES=458, PETRI_TRANSITIONS=177} [2022-01-19 12:59:52,718 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 301 predicate places. [2022-01-19 12:59:52,718 INFO L470 AbstractCegarLoop]: Abstraction has has 458 places, 177 transitions, 1295 flow [2022-01-19 12:59:52,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:52,718 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:59:52,719 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 12:59:52,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-19 12:59:52,719 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 12:59:52,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:59:52,719 INFO L85 PathProgramCache]: Analyzing trace with hash -461087959, now seen corresponding path program 5 times [2022-01-19 12:59:52,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:59:52,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450138388] [2022-01-19 12:59:52,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:59:52,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:59:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:59:53,342 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 12:59:53,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:59:53,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450138388] [2022-01-19 12:59:53,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450138388] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:59:53,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:59:53,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 12:59:53,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837010629] [2022-01-19 12:59:53,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:59:53,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 12:59:53,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:59:53,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 12:59:53,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-01-19 12:59:53,346 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 12:59:53,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 177 transitions, 1295 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:59:53,347 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:59:53,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 12:59:53,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:00:02,872 INFO L129 PetriNetUnfolder]: 1502/4877 cut-off events. [2022-01-19 13:00:02,873 INFO L130 PetriNetUnfolder]: For 102716/102720 co-relation queries the response was YES. [2022-01-19 13:00:02,933 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28769 conditions, 4877 events. 1502/4877 cut-off events. For 102716/102720 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 40500 event pairs, 108 based on Foata normal form. 3/4823 useless extension candidates. Maximal degree in co-relation 28565. Up to 513 conditions per place. [2022-01-19 13:00:02,946 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 513 selfloop transitions, 29 changer transitions 163/776 dead transitions. [2022-01-19 13:00:02,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 776 transitions, 11098 flow [2022-01-19 13:00:02,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-19 13:00:02,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-01-19 13:00:02,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7507 transitions. [2022-01-19 13:00:02,950 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5136152162014231 [2022-01-19 13:00:02,950 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7507 transitions. [2022-01-19 13:00:02,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7507 transitions. [2022-01-19 13:00:02,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:00:02,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7507 transitions. [2022-01-19 13:00:02,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.36904761904762) internal successors, (7507), 84 states have internal predecessors, (7507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:00:02,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:00:02,965 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:00:02,965 INFO L186 Difference]: Start difference. First operand has 458 places, 177 transitions, 1295 flow. Second operand 84 states and 7507 transitions. [2022-01-19 13:00:02,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 776 transitions, 11098 flow [2022-01-19 13:00:03,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 776 transitions, 10240 flow, removed 388 selfloop flow, removed 34 redundant places. [2022-01-19 13:00:03,320 INFO L242 Difference]: Finished difference. Result has 512 places, 184 transitions, 1594 flow [2022-01-19 13:00:03,320 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1594, PETRI_PLACES=512, PETRI_TRANSITIONS=184} [2022-01-19 13:00:03,320 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 355 predicate places. [2022-01-19 13:00:03,321 INFO L470 AbstractCegarLoop]: Abstraction has has 512 places, 184 transitions, 1594 flow [2022-01-19 13:00:03,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:00:03,321 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:00:03,321 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:00:03,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-19 13:00:03,321 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:00:03,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:00:03,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1159621057, now seen corresponding path program 6 times [2022-01-19 13:00:03,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:00:03,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194520509] [2022-01-19 13:00:03,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:00:03,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:00:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:00:03,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:00:03,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:00:03,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194520509] [2022-01-19 13:00:03,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194520509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:00:03,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:00:03,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:00:03,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547651513] [2022-01-19 13:00:03,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:00:03,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:00:03,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:00:03,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:00:03,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:00:03,947 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:00:03,948 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 184 transitions, 1594 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:00:03,948 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:00:03,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:00:03,948 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:00:13,760 INFO L129 PetriNetUnfolder]: 1737/5528 cut-off events. [2022-01-19 13:00:13,760 INFO L130 PetriNetUnfolder]: For 164559/164571 co-relation queries the response was YES. [2022-01-19 13:00:13,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37995 conditions, 5528 events. 1737/5528 cut-off events. For 164559/164571 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 46898 event pairs, 531 based on Foata normal form. 3/5395 useless extension candidates. Maximal degree in co-relation 37749. Up to 1047 conditions per place. [2022-01-19 13:00:13,867 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 425 selfloop transitions, 24 changer transitions 156/676 dead transitions. [2022-01-19 13:00:13,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 676 transitions, 11666 flow [2022-01-19 13:00:13,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-19 13:00:13,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-01-19 13:00:13,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7543 transitions. [2022-01-19 13:00:13,872 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5160782703886152 [2022-01-19 13:00:13,872 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7543 transitions. [2022-01-19 13:00:13,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7543 transitions. [2022-01-19 13:00:13,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:00:13,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7543 transitions. [2022-01-19 13:00:13,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.79761904761905) internal successors, (7543), 84 states have internal predecessors, (7543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:00:13,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:00:13,884 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:00:13,885 INFO L186 Difference]: Start difference. First operand has 512 places, 184 transitions, 1594 flow. Second operand 84 states and 7543 transitions. [2022-01-19 13:00:13,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 676 transitions, 11666 flow [2022-01-19 13:00:14,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 676 transitions, 10266 flow, removed 613 selfloop flow, removed 66 redundant places. [2022-01-19 13:00:14,501 INFO L242 Difference]: Finished difference. Result has 542 places, 196 transitions, 1934 flow [2022-01-19 13:00:14,501 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1934, PETRI_PLACES=542, PETRI_TRANSITIONS=196} [2022-01-19 13:00:14,501 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 385 predicate places. [2022-01-19 13:00:14,501 INFO L470 AbstractCegarLoop]: Abstraction has has 542 places, 196 transitions, 1934 flow [2022-01-19 13:00:14,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:00:14,502 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:00:14,502 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:00:14,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-19 13:00:14,502 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:00:14,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:00:14,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1277066965, now seen corresponding path program 7 times [2022-01-19 13:00:14,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:00:14,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590451552] [2022-01-19 13:00:14,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:00:14,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:00:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:00:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:00:15,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:00:15,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590451552] [2022-01-19 13:00:15,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590451552] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:00:15,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:00:15,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:00:15,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193744430] [2022-01-19 13:00:15,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:00:15,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:00:15,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:00:15,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:00:15,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:00:15,206 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:00:15,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 196 transitions, 1934 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:00:15,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:00:15,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:00:15,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:00:44,998 INFO L129 PetriNetUnfolder]: 1877/6140 cut-off events. [2022-01-19 13:00:44,998 INFO L130 PetriNetUnfolder]: For 259135/259139 co-relation queries the response was YES. [2022-01-19 13:00:45,102 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46041 conditions, 6140 events. 1877/6140 cut-off events. For 259135/259139 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 54339 event pairs, 235 based on Foata normal form. 3/6056 useless extension candidates. Maximal degree in co-relation 45775. Up to 936 conditions per place. [2022-01-19 13:00:45,124 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 554 selfloop transitions, 31 changer transitions 168/824 dead transitions. [2022-01-19 13:00:45,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 824 transitions, 15362 flow [2022-01-19 13:00:45,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-19 13:00:45,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-01-19 13:00:45,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7505 transitions. [2022-01-19 13:00:45,128 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5134783798576902 [2022-01-19 13:00:45,128 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7505 transitions. [2022-01-19 13:00:45,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7505 transitions. [2022-01-19 13:00:45,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:00:45,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7505 transitions. [2022-01-19 13:00:45,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.3452380952381) internal successors, (7505), 84 states have internal predecessors, (7505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:00:45,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:00:45,141 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:00:45,142 INFO L186 Difference]: Start difference. First operand has 542 places, 196 transitions, 1934 flow. Second operand 84 states and 7505 transitions. [2022-01-19 13:00:45,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 824 transitions, 15362 flow [2022-01-19 13:00:46,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 824 transitions, 12581 flow, removed 1367 selfloop flow, removed 70 redundant places. [2022-01-19 13:00:46,027 INFO L242 Difference]: Finished difference. Result has 562 places, 204 transitions, 2147 flow [2022-01-19 13:00:46,027 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1675, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2147, PETRI_PLACES=562, PETRI_TRANSITIONS=204} [2022-01-19 13:00:46,027 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 405 predicate places. [2022-01-19 13:00:46,027 INFO L470 AbstractCegarLoop]: Abstraction has has 562 places, 204 transitions, 2147 flow [2022-01-19 13:00:46,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:00:46,028 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:00:46,028 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:00:46,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-19 13:00:46,028 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:00:46,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:00:46,028 INFO L85 PathProgramCache]: Analyzing trace with hash 993198483, now seen corresponding path program 8 times [2022-01-19 13:00:46,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:00:46,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009642951] [2022-01-19 13:00:46,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:00:46,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:00:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:00:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:00:46,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:00:46,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009642951] [2022-01-19 13:00:46,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009642951] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:00:46,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:00:46,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:00:46,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438583856] [2022-01-19 13:00:46,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:00:46,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:00:46,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:00:46,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:00:46,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:00:46,698 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:00:46,699 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 204 transitions, 2147 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:00:46,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:00:46,699 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:00:46,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:00:59,647 INFO L129 PetriNetUnfolder]: 2166/6767 cut-off events. [2022-01-19 13:00:59,647 INFO L130 PetriNetUnfolder]: For 268818/268830 co-relation queries the response was YES. [2022-01-19 13:00:59,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52100 conditions, 6767 events. 2166/6767 cut-off events. For 268818/268830 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 59677 event pairs, 1097 based on Foata normal form. 3/6617 useless extension candidates. Maximal degree in co-relation 51827. Up to 1557 conditions per place. [2022-01-19 13:00:59,792 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 443 selfloop transitions, 26 changer transitions 146/686 dead transitions. [2022-01-19 13:00:59,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 686 transitions, 13269 flow [2022-01-19 13:00:59,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-19 13:00:59,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-01-19 13:00:59,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7545 transitions. [2022-01-19 13:00:59,796 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5162151067323482 [2022-01-19 13:00:59,797 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7545 transitions. [2022-01-19 13:00:59,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7545 transitions. [2022-01-19 13:00:59,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:00:59,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7545 transitions. [2022-01-19 13:00:59,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.82142857142857) internal successors, (7545), 84 states have internal predecessors, (7545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:00:59,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:00:59,890 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:00:59,890 INFO L186 Difference]: Start difference. First operand has 562 places, 204 transitions, 2147 flow. Second operand 84 states and 7545 transitions. [2022-01-19 13:00:59,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 686 transitions, 13269 flow [2022-01-19 13:01:01,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 686 transitions, 11459 flow, removed 818 selfloop flow, removed 66 redundant places. [2022-01-19 13:01:01,010 INFO L242 Difference]: Finished difference. Result has 593 places, 217 transitions, 2537 flow [2022-01-19 13:01:01,010 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2537, PETRI_PLACES=593, PETRI_TRANSITIONS=217} [2022-01-19 13:01:01,010 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 436 predicate places. [2022-01-19 13:01:01,010 INFO L470 AbstractCegarLoop]: Abstraction has has 593 places, 217 transitions, 2537 flow [2022-01-19 13:01:01,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:01:01,011 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:01:01,011 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:01:01,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-19 13:01:01,011 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:01:01,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:01:01,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1591563263, now seen corresponding path program 9 times [2022-01-19 13:01:01,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:01:01,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886804246] [2022-01-19 13:01:01,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:01:01,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:01:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:01:01,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:01:01,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:01:01,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886804246] [2022-01-19 13:01:01,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886804246] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:01:01,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:01:01,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:01:01,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184314100] [2022-01-19 13:01:01,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:01:01,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:01:01,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:01:01,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:01:01,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:01:01,518 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 174 [2022-01-19 13:01:01,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 217 transitions, 2537 flow. Second operand has 28 states, 28 states have (on average 97.14285714285714) internal successors, (2720), 28 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:01:01,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:01:01,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 174 [2022-01-19 13:01:01,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:01:08,698 INFO L129 PetriNetUnfolder]: 2220/7341 cut-off events. [2022-01-19 13:01:08,698 INFO L130 PetriNetUnfolder]: For 380177/380185 co-relation queries the response was YES. [2022-01-19 13:01:08,904 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60699 conditions, 7341 events. 2220/7341 cut-off events. For 380177/380185 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 68141 event pairs, 224 based on Foata normal form. 4/7224 useless extension candidates. Maximal degree in co-relation 60405. Up to 1683 conditions per place. [2022-01-19 13:01:08,935 INFO L132 encePairwiseOnDemand]: 139/174 looper letters, 580 selfloop transitions, 66 changer transitions 106/837 dead transitions. [2022-01-19 13:01:08,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 837 transitions, 19505 flow [2022-01-19 13:01:08,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-19 13:01:08,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-01-19 13:01:08,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 6063 transitions. [2022-01-19 13:01:08,940 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5807471264367816 [2022-01-19 13:01:08,940 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 6063 transitions. [2022-01-19 13:01:08,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 6063 transitions. [2022-01-19 13:01:08,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:01:08,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 6063 transitions. [2022-01-19 13:01:08,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 101.05) internal successors, (6063), 60 states have internal predecessors, (6063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:01:08,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 174.0) internal successors, (10614), 61 states have internal predecessors, (10614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:01:08,949 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 174.0) internal successors, (10614), 61 states have internal predecessors, (10614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:01:08,949 INFO L186 Difference]: Start difference. First operand has 593 places, 217 transitions, 2537 flow. Second operand 60 states and 6063 transitions. [2022-01-19 13:01:08,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 837 transitions, 19505 flow [2022-01-19 13:01:10,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 837 transitions, 16266 flow, removed 1614 selfloop flow, removed 68 redundant places. [2022-01-19 13:01:10,246 INFO L242 Difference]: Finished difference. Result has 572 places, 268 transitions, 3797 flow [2022-01-19 13:01:10,246 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2242, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=3797, PETRI_PLACES=572, PETRI_TRANSITIONS=268} [2022-01-19 13:01:10,246 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 415 predicate places. [2022-01-19 13:01:10,246 INFO L470 AbstractCegarLoop]: Abstraction has has 572 places, 268 transitions, 3797 flow [2022-01-19 13:01:10,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 97.14285714285714) internal successors, (2720), 28 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:01:10,247 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:01:10,247 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:01:10,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-19 13:01:10,247 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:01:10,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:01:10,248 INFO L85 PathProgramCache]: Analyzing trace with hash -726751155, now seen corresponding path program 10 times [2022-01-19 13:01:10,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:01:10,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777819462] [2022-01-19 13:01:10,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:01:10,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:01:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:01:10,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:01:10,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:01:10,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777819462] [2022-01-19 13:01:10,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777819462] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:01:10,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:01:10,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:01:10,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415253180] [2022-01-19 13:01:10,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:01:10,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:01:10,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:01:10,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:01:10,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:01:10,835 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:01:10,836 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 268 transitions, 3797 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:01:10,836 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:01:10,836 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:01:10,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:01:24,233 INFO L129 PetriNetUnfolder]: 2333/7262 cut-off events. [2022-01-19 13:01:24,233 INFO L130 PetriNetUnfolder]: For 330186/330198 co-relation queries the response was YES. [2022-01-19 13:01:24,359 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59264 conditions, 7262 events. 2333/7262 cut-off events. For 330186/330198 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 65352 event pairs, 867 based on Foata normal form. 3/7075 useless extension candidates. Maximal degree in co-relation 58982. Up to 2967 conditions per place. [2022-01-19 13:01:24,386 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 641 selfloop transitions, 45 changer transitions 163/920 dead transitions. [2022-01-19 13:01:24,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 920 transitions, 20525 flow [2022-01-19 13:01:24,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-19 13:01:24,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-01-19 13:01:24,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7490 transitions. [2022-01-19 13:01:24,390 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5124521072796935 [2022-01-19 13:01:24,391 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7490 transitions. [2022-01-19 13:01:24,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7490 transitions. [2022-01-19 13:01:24,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:01:24,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7490 transitions. [2022-01-19 13:01:24,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.16666666666667) internal successors, (7490), 84 states have internal predecessors, (7490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:01:24,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:01:24,402 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:01:24,402 INFO L186 Difference]: Start difference. First operand has 572 places, 268 transitions, 3797 flow. Second operand 84 states and 7490 transitions. [2022-01-19 13:01:24,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 920 transitions, 20525 flow [2022-01-19 13:01:25,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 920 transitions, 17801 flow, removed 1240 selfloop flow, removed 47 redundant places. [2022-01-19 13:01:25,823 INFO L242 Difference]: Finished difference. Result has 648 places, 281 transitions, 3803 flow [2022-01-19 13:01:25,824 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3041, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=3803, PETRI_PLACES=648, PETRI_TRANSITIONS=281} [2022-01-19 13:01:25,824 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 491 predicate places. [2022-01-19 13:01:25,824 INFO L470 AbstractCegarLoop]: Abstraction has has 648 places, 281 transitions, 3803 flow [2022-01-19 13:01:25,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:01:25,824 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:01:25,824 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:01:25,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-19 13:01:25,825 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:01:25,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:01:25,825 INFO L85 PathProgramCache]: Analyzing trace with hash 599418103, now seen corresponding path program 11 times [2022-01-19 13:01:25,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:01:25,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24736142] [2022-01-19 13:01:25,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:01:25,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:01:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:01:26,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:01:26,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:01:26,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24736142] [2022-01-19 13:01:26,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24736142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:01:26,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:01:26,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:01:26,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911861250] [2022-01-19 13:01:26,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:01:26,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:01:26,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:01:26,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:01:26,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:01:26,524 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:01:26,526 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 281 transitions, 3803 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:01:26,526 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:01:26,526 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:01:26,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:01:40,422 INFO L129 PetriNetUnfolder]: 2540/8070 cut-off events. [2022-01-19 13:01:40,423 INFO L130 PetriNetUnfolder]: For 407126/407134 co-relation queries the response was YES. [2022-01-19 13:01:40,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68300 conditions, 8070 events. 2540/8070 cut-off events. For 407126/407134 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 75321 event pairs, 581 based on Foata normal form. 1/7948 useless extension candidates. Maximal degree in co-relation 67980. Up to 2368 conditions per place. [2022-01-19 13:01:40,617 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 640 selfloop transitions, 28 changer transitions 178/917 dead transitions. [2022-01-19 13:01:40,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 666 places, 917 transitions, 19278 flow [2022-01-19 13:01:40,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-19 13:01:40,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-01-19 13:01:40,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7516 transitions. [2022-01-19 13:01:40,620 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5142309797482211 [2022-01-19 13:01:40,621 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7516 transitions. [2022-01-19 13:01:40,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7516 transitions. [2022-01-19 13:01:40,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:01:40,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7516 transitions. [2022-01-19 13:01:40,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.47619047619048) internal successors, (7516), 84 states have internal predecessors, (7516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:01:40,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:01:40,632 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:01:40,632 INFO L186 Difference]: Start difference. First operand has 648 places, 281 transitions, 3803 flow. Second operand 84 states and 7516 transitions. [2022-01-19 13:01:40,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 666 places, 917 transitions, 19278 flow [2022-01-19 13:01:42,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 917 transitions, 16734 flow, removed 1263 selfloop flow, removed 69 redundant places. [2022-01-19 13:01:42,819 INFO L242 Difference]: Finished difference. Result has 673 places, 291 transitions, 4130 flow [2022-01-19 13:01:42,819 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3495, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=4130, PETRI_PLACES=673, PETRI_TRANSITIONS=291} [2022-01-19 13:01:42,819 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 516 predicate places. [2022-01-19 13:01:42,819 INFO L470 AbstractCegarLoop]: Abstraction has has 673 places, 291 transitions, 4130 flow [2022-01-19 13:01:42,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:01:42,820 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:01:42,820 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:01:42,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-19 13:01:42,820 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:01:42,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:01:42,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1569916807, now seen corresponding path program 12 times [2022-01-19 13:01:42,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:01:42,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949795423] [2022-01-19 13:01:42,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:01:42,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:01:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:01:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:01:43,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:01:43,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949795423] [2022-01-19 13:01:43,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949795423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:01:43,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:01:43,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:01:43,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994049173] [2022-01-19 13:01:43,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:01:43,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:01:43,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:01:43,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:01:43,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:01:43,391 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:01:43,392 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 673 places, 291 transitions, 4130 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:01:43,392 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:01:43,392 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:01:43,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:01:56,940 INFO L129 PetriNetUnfolder]: 2594/8185 cut-off events. [2022-01-19 13:01:56,941 INFO L130 PetriNetUnfolder]: For 468859/468899 co-relation queries the response was YES. [2022-01-19 13:01:57,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71691 conditions, 8185 events. 2594/8185 cut-off events. For 468859/468899 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 76305 event pairs, 901 based on Foata normal form. 3/7972 useless extension candidates. Maximal degree in co-relation 71360. Up to 2967 conditions per place. [2022-01-19 13:01:57,152 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 635 selfloop transitions, 50 changer transitions 149/905 dead transitions. [2022-01-19 13:01:57,152 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 905 transitions, 21737 flow [2022-01-19 13:01:57,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 13:01:57,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 13:01:57,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7167 transitions. [2022-01-19 13:01:57,155 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5148706896551725 [2022-01-19 13:01:57,155 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7167 transitions. [2022-01-19 13:01:57,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7167 transitions. [2022-01-19 13:01:57,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:01:57,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7167 transitions. [2022-01-19 13:01:57,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.5875) internal successors, (7167), 80 states have internal predecessors, (7167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:01:57,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:01:57,167 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:01:57,167 INFO L186 Difference]: Start difference. First operand has 673 places, 291 transitions, 4130 flow. Second operand 80 states and 7167 transitions. [2022-01-19 13:01:57,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 687 places, 905 transitions, 21737 flow [2022-01-19 13:01:59,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 627 places, 905 transitions, 18947 flow, removed 1350 selfloop flow, removed 60 redundant places. [2022-01-19 13:01:59,367 INFO L242 Difference]: Finished difference. Result has 690 places, 297 transitions, 4313 flow [2022-01-19 13:01:59,367 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3853, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=4313, PETRI_PLACES=690, PETRI_TRANSITIONS=297} [2022-01-19 13:01:59,367 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 533 predicate places. [2022-01-19 13:01:59,367 INFO L470 AbstractCegarLoop]: Abstraction has has 690 places, 297 transitions, 4313 flow [2022-01-19 13:01:59,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:01:59,368 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:01:59,368 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:01:59,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-19 13:01:59,368 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:01:59,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:01:59,369 INFO L85 PathProgramCache]: Analyzing trace with hash -672231915, now seen corresponding path program 13 times [2022-01-19 13:01:59,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:01:59,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200052281] [2022-01-19 13:01:59,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:01:59,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:01:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:02:00,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:02:00,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:02:00,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200052281] [2022-01-19 13:02:00,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200052281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:02:00,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:02:00,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:02:00,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158913407] [2022-01-19 13:02:00,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:02:00,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:02:00,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:02:00,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:02:00,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:02:00,016 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:02:00,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 690 places, 297 transitions, 4313 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:02:00,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:02:00,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:02:00,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:02:15,257 INFO L129 PetriNetUnfolder]: 2840/8931 cut-off events. [2022-01-19 13:02:15,257 INFO L130 PetriNetUnfolder]: For 490454/490466 co-relation queries the response was YES. [2022-01-19 13:02:15,443 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79388 conditions, 8931 events. 2840/8931 cut-off events. For 490454/490466 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 85195 event pairs, 820 based on Foata normal form. 1/8790 useless extension candidates. Maximal degree in co-relation 79047. Up to 3114 conditions per place. [2022-01-19 13:02:15,476 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 598 selfloop transitions, 30 changer transitions 183/882 dead transitions. [2022-01-19 13:02:15,476 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 882 transitions, 18783 flow [2022-01-19 13:02:15,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-19 13:02:15,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-01-19 13:02:15,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7515 transitions. [2022-01-19 13:02:15,480 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5141625615763546 [2022-01-19 13:02:15,480 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7515 transitions. [2022-01-19 13:02:15,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7515 transitions. [2022-01-19 13:02:15,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:02:15,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7515 transitions. [2022-01-19 13:02:15,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.46428571428571) internal successors, (7515), 84 states have internal predecessors, (7515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:02:15,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:02:15,492 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:02:15,492 INFO L186 Difference]: Start difference. First operand has 690 places, 297 transitions, 4313 flow. Second operand 84 states and 7515 transitions. [2022-01-19 13:02:15,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 882 transitions, 18783 flow [2022-01-19 13:02:17,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 882 transitions, 17724 flow, removed 435 selfloop flow, removed 65 redundant places. [2022-01-19 13:02:17,918 INFO L242 Difference]: Finished difference. Result has 725 places, 308 transitions, 4799 flow [2022-01-19 13:02:17,918 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=4090, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=4799, PETRI_PLACES=725, PETRI_TRANSITIONS=308} [2022-01-19 13:02:17,918 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 568 predicate places. [2022-01-19 13:02:17,918 INFO L470 AbstractCegarLoop]: Abstraction has has 725 places, 308 transitions, 4799 flow [2022-01-19 13:02:17,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:02:17,919 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:02:17,919 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:02:17,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-19 13:02:17,919 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:02:17,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:02:17,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1048200985, now seen corresponding path program 14 times [2022-01-19 13:02:17,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:02:17,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555636541] [2022-01-19 13:02:17,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:02:17,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:02:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:02:18,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:02:18,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:02:18,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555636541] [2022-01-19 13:02:18,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555636541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:02:18,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:02:18,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:02:18,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165023647] [2022-01-19 13:02:18,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:02:18,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:02:18,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:02:18,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:02:18,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:02:18,645 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:02:18,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 725 places, 308 transitions, 4799 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:02:18,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:02:18,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:02:18,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:02:33,357 INFO L129 PetriNetUnfolder]: 2909/9251 cut-off events. [2022-01-19 13:02:33,357 INFO L130 PetriNetUnfolder]: For 629778/629816 co-relation queries the response was YES. [2022-01-19 13:02:33,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86949 conditions, 9251 events. 2909/9251 cut-off events. For 629778/629816 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 89136 event pairs, 965 based on Foata normal form. 5/9006 useless extension candidates. Maximal degree in co-relation 86587. Up to 2967 conditions per place. [2022-01-19 13:02:33,633 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 681 selfloop transitions, 50 changer transitions 154/956 dead transitions. [2022-01-19 13:02:33,633 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 739 places, 956 transitions, 24722 flow [2022-01-19 13:02:33,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 13:02:33,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 13:02:33,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7168 transitions. [2022-01-19 13:02:33,636 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5149425287356322 [2022-01-19 13:02:33,637 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7168 transitions. [2022-01-19 13:02:33,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7168 transitions. [2022-01-19 13:02:33,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:02:33,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7168 transitions. [2022-01-19 13:02:33,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.6) internal successors, (7168), 80 states have internal predecessors, (7168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:02:33,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:02:33,649 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:02:33,649 INFO L186 Difference]: Start difference. First operand has 725 places, 308 transitions, 4799 flow. Second operand 80 states and 7168 transitions. [2022-01-19 13:02:33,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 739 places, 956 transitions, 24722 flow [2022-01-19 13:02:36,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 668 places, 956 transitions, 21349 flow, removed 1659 selfloop flow, removed 71 redundant places. [2022-01-19 13:02:37,001 INFO L242 Difference]: Finished difference. Result has 733 places, 315 transitions, 4973 flow [2022-01-19 13:02:37,002 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=4448, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=4973, PETRI_PLACES=733, PETRI_TRANSITIONS=315} [2022-01-19 13:02:37,002 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 576 predicate places. [2022-01-19 13:02:37,002 INFO L470 AbstractCegarLoop]: Abstraction has has 733 places, 315 transitions, 4973 flow [2022-01-19 13:02:37,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:02:37,003 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:02:37,003 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:02:37,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-19 13:02:37,003 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:02:37,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:02:37,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2056583797, now seen corresponding path program 15 times [2022-01-19 13:02:37,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:02:37,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683648602] [2022-01-19 13:02:37,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:02:37,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:02:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:02:37,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:02:37,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:02:37,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683648602] [2022-01-19 13:02:37,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683648602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:02:37,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:02:37,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:02:37,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841219671] [2022-01-19 13:02:37,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:02:37,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:02:37,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:02:37,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:02:37,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:02:37,554 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:02:37,555 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 733 places, 315 transitions, 4973 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:02:37,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:02:37,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:02:37,555 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:02:52,484 INFO L129 PetriNetUnfolder]: 2996/9419 cut-off events. [2022-01-19 13:02:52,484 INFO L130 PetriNetUnfolder]: For 556971/557013 co-relation queries the response was YES. [2022-01-19 13:02:52,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87061 conditions, 9419 events. 2996/9419 cut-off events. For 556971/557013 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 90900 event pairs, 900 based on Foata normal form. 5/9278 useless extension candidates. Maximal degree in co-relation 86699. Up to 3317 conditions per place. [2022-01-19 13:02:52,754 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 628 selfloop transitions, 36 changer transitions 168/903 dead transitions. [2022-01-19 13:02:52,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 752 places, 903 transitions, 19351 flow [2022-01-19 13:02:52,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 13:02:52,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 13:02:52,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7191 transitions. [2022-01-19 13:02:52,758 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5165948275862069 [2022-01-19 13:02:52,758 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7191 transitions. [2022-01-19 13:02:52,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7191 transitions. [2022-01-19 13:02:52,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:02:52,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7191 transitions. [2022-01-19 13:02:52,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.8875) internal successors, (7191), 80 states have internal predecessors, (7191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:02:52,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:02:52,769 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:02:52,770 INFO L186 Difference]: Start difference. First operand has 733 places, 315 transitions, 4973 flow. Second operand 80 states and 7191 transitions. [2022-01-19 13:02:52,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 752 places, 903 transitions, 19351 flow [2022-01-19 13:02:56,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 686 places, 903 transitions, 18426 flow, removed 374 selfloop flow, removed 66 redundant places. [2022-01-19 13:02:56,284 INFO L242 Difference]: Finished difference. Result has 749 places, 321 transitions, 5159 flow [2022-01-19 13:02:56,284 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=4723, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=5159, PETRI_PLACES=749, PETRI_TRANSITIONS=321} [2022-01-19 13:02:56,285 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 592 predicate places. [2022-01-19 13:02:56,285 INFO L470 AbstractCegarLoop]: Abstraction has has 749 places, 321 transitions, 5159 flow [2022-01-19 13:02:56,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:02:56,285 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:02:56,285 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:02:56,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-19 13:02:56,285 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:02:56,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:02:56,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1744354553, now seen corresponding path program 16 times [2022-01-19 13:02:56,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:02:56,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050817177] [2022-01-19 13:02:56,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:02:56,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:02:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:02:56,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:02:56,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:02:56,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050817177] [2022-01-19 13:02:56,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050817177] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:02:56,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:02:56,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:02:56,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149708511] [2022-01-19 13:02:56,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:02:56,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:02:56,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:02:56,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:02:56,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:02:56,950 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:02:56,951 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 749 places, 321 transitions, 5159 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:02:56,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:02:56,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:02:56,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:15,982 INFO L129 PetriNetUnfolder]: 3085/9841 cut-off events. [2022-01-19 13:03:15,982 INFO L130 PetriNetUnfolder]: For 519632/519685 co-relation queries the response was YES. [2022-01-19 13:03:16,215 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88308 conditions, 9841 events. 3085/9841 cut-off events. For 519632/519685 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 95973 event pairs, 1070 based on Foata normal form. 3/9573 useless extension candidates. Maximal degree in co-relation 87940. Up to 2967 conditions per place. [2022-01-19 13:03:16,257 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 674 selfloop transitions, 49 changer transitions 159/953 dead transitions. [2022-01-19 13:03:16,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 768 places, 953 transitions, 22913 flow [2022-01-19 13:03:16,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 13:03:16,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 13:03:16,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7168 transitions. [2022-01-19 13:03:16,260 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5149425287356322 [2022-01-19 13:03:16,261 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7168 transitions. [2022-01-19 13:03:16,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7168 transitions. [2022-01-19 13:03:16,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:16,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7168 transitions. [2022-01-19 13:03:16,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.6) internal successors, (7168), 80 states have internal predecessors, (7168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:16,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:16,272 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:16,272 INFO L186 Difference]: Start difference. First operand has 749 places, 321 transitions, 5159 flow. Second operand 80 states and 7168 transitions. [2022-01-19 13:03:16,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 768 places, 953 transitions, 22913 flow [2022-01-19 13:03:19,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 703 places, 953 transitions, 22067 flow, removed 370 selfloop flow, removed 65 redundant places. [2022-01-19 13:03:19,655 INFO L242 Difference]: Finished difference. Result has 770 places, 329 transitions, 5542 flow [2022-01-19 13:03:19,655 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=4949, PETRI_DIFFERENCE_MINUEND_PLACES=624, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=5542, PETRI_PLACES=770, PETRI_TRANSITIONS=329} [2022-01-19 13:03:19,655 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 613 predicate places. [2022-01-19 13:03:19,656 INFO L470 AbstractCegarLoop]: Abstraction has has 770 places, 329 transitions, 5542 flow [2022-01-19 13:03:19,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:19,656 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:19,656 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:19,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-19 13:03:19,656 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:19,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:19,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1133985109, now seen corresponding path program 17 times [2022-01-19 13:03:19,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:19,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459413819] [2022-01-19 13:03:19,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:19,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:20,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:20,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459413819] [2022-01-19 13:03:20,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459413819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:20,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:20,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:03:20,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388706243] [2022-01-19 13:03:20,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:20,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:03:20,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:20,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:03:20,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:03:20,319 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:03:20,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 770 places, 329 transitions, 5542 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:20,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:20,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:03:20,321 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:35,574 INFO L129 PetriNetUnfolder]: 3186/10082 cut-off events. [2022-01-19 13:03:35,574 INFO L130 PetriNetUnfolder]: For 655258/655313 co-relation queries the response was YES. [2022-01-19 13:03:35,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97419 conditions, 10082 events. 3186/10082 cut-off events. For 655258/655313 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 99052 event pairs, 997 based on Foata normal form. 5/9921 useless extension candidates. Maximal degree in co-relation 97040. Up to 3550 conditions per place. [2022-01-19 13:03:35,896 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 638 selfloop transitions, 40 changer transitions 173/922 dead transitions. [2022-01-19 13:03:35,896 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 789 places, 922 transitions, 21181 flow [2022-01-19 13:03:35,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 13:03:35,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 13:03:35,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7192 transitions. [2022-01-19 13:03:35,908 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2022-01-19 13:03:35,908 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7192 transitions. [2022-01-19 13:03:35,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7192 transitions. [2022-01-19 13:03:35,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:35,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7192 transitions. [2022-01-19 13:03:35,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.9) internal successors, (7192), 80 states have internal predecessors, (7192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:35,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:35,924 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:35,924 INFO L186 Difference]: Start difference. First operand has 770 places, 329 transitions, 5542 flow. Second operand 80 states and 7192 transitions. [2022-01-19 13:03:35,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 789 places, 922 transitions, 21181 flow [2022-01-19 13:03:39,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 722 places, 922 transitions, 19800 flow, removed 601 selfloop flow, removed 67 redundant places. [2022-01-19 13:03:39,789 INFO L242 Difference]: Finished difference. Result has 787 places, 336 transitions, 5768 flow [2022-01-19 13:03:39,789 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=5261, PETRI_DIFFERENCE_MINUEND_PLACES=643, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=5768, PETRI_PLACES=787, PETRI_TRANSITIONS=336} [2022-01-19 13:03:39,790 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 630 predicate places. [2022-01-19 13:03:39,790 INFO L470 AbstractCegarLoop]: Abstraction has has 787 places, 336 transitions, 5768 flow [2022-01-19 13:03:39,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:39,790 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:39,790 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:39,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-19 13:03:39,790 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:39,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:39,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1837188737, now seen corresponding path program 18 times [2022-01-19 13:03:39,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:39,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384763699] [2022-01-19 13:03:39,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:39,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:40,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:40,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:40,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384763699] [2022-01-19 13:03:40,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384763699] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:40,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:40,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:03:40,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333509156] [2022-01-19 13:03:40,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:40,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:03:40,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:40,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:03:40,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:03:40,351 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:03:40,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 787 places, 336 transitions, 5768 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:40,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:40,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:03:40,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:56,354 INFO L129 PetriNetUnfolder]: 3305/10521 cut-off events. [2022-01-19 13:03:56,354 INFO L130 PetriNetUnfolder]: For 610899/610962 co-relation queries the response was YES. [2022-01-19 13:03:56,623 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98766 conditions, 10521 events. 3305/10521 cut-off events. For 610899/610962 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 104391 event pairs, 1172 based on Foata normal form. 5/10229 useless extension candidates. Maximal degree in co-relation 98380. Up to 2967 conditions per place. [2022-01-19 13:03:56,668 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 665 selfloop transitions, 46 changer transitions 164/946 dead transitions. [2022-01-19 13:03:56,668 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 806 places, 946 transitions, 23548 flow [2022-01-19 13:03:56,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 13:03:56,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 13:03:56,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7169 transitions. [2022-01-19 13:03:56,672 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.515014367816092 [2022-01-19 13:03:56,672 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7169 transitions. [2022-01-19 13:03:56,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7169 transitions. [2022-01-19 13:03:56,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:56,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7169 transitions. [2022-01-19 13:03:56,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.6125) internal successors, (7169), 80 states have internal predecessors, (7169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:56,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:56,683 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:56,683 INFO L186 Difference]: Start difference. First operand has 787 places, 336 transitions, 5768 flow. Second operand 80 states and 7169 transitions. [2022-01-19 13:03:56,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 806 places, 946 transitions, 23548 flow [2022-01-19 13:04:00,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 740 places, 946 transitions, 22584 flow, removed 429 selfloop flow, removed 66 redundant places. [2022-01-19 13:04:00,517 INFO L242 Difference]: Finished difference. Result has 809 places, 345 transitions, 6194 flow [2022-01-19 13:04:00,517 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=5533, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=6194, PETRI_PLACES=809, PETRI_TRANSITIONS=345} [2022-01-19 13:04:00,518 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 652 predicate places. [2022-01-19 13:04:00,518 INFO L470 AbstractCegarLoop]: Abstraction has has 809 places, 345 transitions, 6194 flow [2022-01-19 13:04:00,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:00,518 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:00,518 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:00,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-19 13:04:00,518 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:00,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:00,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1421973431, now seen corresponding path program 19 times [2022-01-19 13:04:00,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:00,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263933509] [2022-01-19 13:04:00,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:00,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:01,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:01,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:01,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263933509] [2022-01-19 13:04:01,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263933509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:01,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:01,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:04:01,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860853800] [2022-01-19 13:04:01,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:01,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:04:01,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:01,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:04:01,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:04:01,189 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:04:01,189 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 809 places, 345 transitions, 6194 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:01,189 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:01,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:04:01,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:16,911 INFO L129 PetriNetUnfolder]: 3420/10873 cut-off events. [2022-01-19 13:04:16,912 INFO L130 PetriNetUnfolder]: For 780204/780272 co-relation queries the response was YES. [2022-01-19 13:04:17,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109636 conditions, 10873 events. 3420/10873 cut-off events. For 780204/780272 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 108635 event pairs, 1148 based on Foata normal form. 5/10680 useless extension candidates. Maximal degree in co-relation 109238. Up to 3843 conditions per place. [2022-01-19 13:04:17,245 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 653 selfloop transitions, 42 changer transitions 178/944 dead transitions. [2022-01-19 13:04:17,246 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 828 places, 944 transitions, 23145 flow [2022-01-19 13:04:17,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 13:04:17,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 13:04:17,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7192 transitions. [2022-01-19 13:04:17,249 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2022-01-19 13:04:17,249 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7192 transitions. [2022-01-19 13:04:17,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7192 transitions. [2022-01-19 13:04:17,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:17,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7192 transitions. [2022-01-19 13:04:17,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.9) internal successors, (7192), 80 states have internal predecessors, (7192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:17,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:17,261 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:17,261 INFO L186 Difference]: Start difference. First operand has 809 places, 345 transitions, 6194 flow. Second operand 80 states and 7192 transitions. [2022-01-19 13:04:17,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 828 places, 944 transitions, 23145 flow [2022-01-19 13:04:22,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 760 places, 944 transitions, 21300 flow, removed 832 selfloop flow, removed 68 redundant places. [2022-01-19 13:04:22,584 INFO L242 Difference]: Finished difference. Result has 827 places, 353 transitions, 6466 flow [2022-01-19 13:04:22,585 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=5878, PETRI_DIFFERENCE_MINUEND_PLACES=681, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=6466, PETRI_PLACES=827, PETRI_TRANSITIONS=353} [2022-01-19 13:04:22,585 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 670 predicate places. [2022-01-19 13:04:22,585 INFO L470 AbstractCegarLoop]: Abstraction has has 827 places, 353 transitions, 6466 flow [2022-01-19 13:04:22,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:22,586 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:22,586 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:22,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-19 13:04:22,586 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:22,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:22,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1574213307, now seen corresponding path program 20 times [2022-01-19 13:04:22,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:22,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988825484] [2022-01-19 13:04:22,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:22,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:23,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:23,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:23,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988825484] [2022-01-19 13:04:23,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988825484] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:23,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:23,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:04:23,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314170691] [2022-01-19 13:04:23,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:23,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:04:23,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:23,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:04:23,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:04:23,086 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:04:23,087 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 827 places, 353 transitions, 6466 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:23,087 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:23,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:04:23,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:42,090 INFO L129 PetriNetUnfolder]: 3554/11285 cut-off events. [2022-01-19 13:04:42,090 INFO L130 PetriNetUnfolder]: For 724050/724113 co-relation queries the response was YES. [2022-01-19 13:04:42,411 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110526 conditions, 11285 events. 3554/11285 cut-off events. For 724050/724113 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 113585 event pairs, 1345 based on Foata normal form. 5/10971 useless extension candidates. Maximal degree in co-relation 110120. Up to 2967 conditions per place. [2022-01-19 13:04:42,461 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 663 selfloop transitions, 41 changer transitions 169/944 dead transitions. [2022-01-19 13:04:42,461 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 846 places, 944 transitions, 23895 flow [2022-01-19 13:04:42,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 13:04:42,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 13:04:42,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7182 transitions. [2022-01-19 13:04:42,466 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5159482758620689 [2022-01-19 13:04:42,466 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7182 transitions. [2022-01-19 13:04:42,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7182 transitions. [2022-01-19 13:04:42,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:42,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7182 transitions. [2022-01-19 13:04:42,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.775) internal successors, (7182), 80 states have internal predecessors, (7182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:42,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:42,478 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:42,478 INFO L186 Difference]: Start difference. First operand has 827 places, 353 transitions, 6466 flow. Second operand 80 states and 7182 transitions. [2022-01-19 13:04:42,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 846 places, 944 transitions, 23895 flow [2022-01-19 13:04:47,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 779 places, 944 transitions, 22839 flow, removed 476 selfloop flow, removed 67 redundant places. [2022-01-19 13:04:47,897 INFO L242 Difference]: Finished difference. Result has 850 places, 363 transitions, 6920 flow [2022-01-19 13:04:47,898 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=6202, PETRI_DIFFERENCE_MINUEND_PLACES=700, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=6920, PETRI_PLACES=850, PETRI_TRANSITIONS=363} [2022-01-19 13:04:47,898 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 693 predicate places. [2022-01-19 13:04:47,898 INFO L470 AbstractCegarLoop]: Abstraction has has 850 places, 363 transitions, 6920 flow [2022-01-19 13:04:47,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:47,898 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:47,898 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:47,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-19 13:04:47,899 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:47,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:47,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1847364631, now seen corresponding path program 21 times [2022-01-19 13:04:47,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:47,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945061567] [2022-01-19 13:04:47,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:47,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:48,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:48,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945061567] [2022-01-19 13:04:48,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945061567] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:48,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:48,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:04:48,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15407489] [2022-01-19 13:04:48,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:48,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:04:48,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:48,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:04:48,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:04:48,502 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:04:48,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 850 places, 363 transitions, 6920 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:48,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:48,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:04:48,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:05,759 INFO L129 PetriNetUnfolder]: 3697/11564 cut-off events. [2022-01-19 13:05:05,759 INFO L130 PetriNetUnfolder]: For 924542/924618 co-relation queries the response was YES. [2022-01-19 13:05:06,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123271 conditions, 11564 events. 3697/11564 cut-off events. For 924542/924618 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 116812 event pairs, 1491 based on Foata normal form. 3/11350 useless extension candidates. Maximal degree in co-relation 122852. Up to 4166 conditions per place. [2022-01-19 13:05:06,113 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 674 selfloop transitions, 42 changer transitions 183/970 dead transitions. [2022-01-19 13:05:06,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 869 places, 970 transitions, 25193 flow [2022-01-19 13:05:06,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 13:05:06,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 13:05:06,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7193 transitions. [2022-01-19 13:05:06,117 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5167385057471264 [2022-01-19 13:05:06,117 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7193 transitions. [2022-01-19 13:05:06,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7193 transitions. [2022-01-19 13:05:06,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:06,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7193 transitions. [2022-01-19 13:05:06,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.9125) internal successors, (7193), 80 states have internal predecessors, (7193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:06,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:06,129 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:06,129 INFO L186 Difference]: Start difference. First operand has 850 places, 363 transitions, 6920 flow. Second operand 80 states and 7193 transitions. [2022-01-19 13:05:06,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 869 places, 970 transitions, 25193 flow [2022-01-19 13:05:12,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 802 places, 970 transitions, 22966 flow, removed 1067 selfloop flow, removed 67 redundant places. [2022-01-19 13:05:12,466 INFO L242 Difference]: Finished difference. Result has 871 places, 372 transitions, 7254 flow [2022-01-19 13:05:12,467 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=6588, PETRI_DIFFERENCE_MINUEND_PLACES=723, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=7254, PETRI_PLACES=871, PETRI_TRANSITIONS=372} [2022-01-19 13:05:12,467 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 714 predicate places. [2022-01-19 13:05:12,467 INFO L470 AbstractCegarLoop]: Abstraction has has 871 places, 372 transitions, 7254 flow [2022-01-19 13:05:12,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:12,468 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:12,468 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:12,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-19 13:05:12,468 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:12,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:12,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1666888879, now seen corresponding path program 22 times [2022-01-19 13:05:12,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:12,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005384531] [2022-01-19 13:05:12,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:12,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:13,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:13,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005384531] [2022-01-19 13:05:13,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005384531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:13,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:13,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:05:13,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574607774] [2022-01-19 13:05:13,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:13,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:05:13,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:13,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:05:13,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:05:13,046 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:05:13,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 871 places, 372 transitions, 7254 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:13,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:13,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:05:13,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:30,887 INFO L129 PetriNetUnfolder]: 4113/13290 cut-off events. [2022-01-19 13:05:30,887 INFO L130 PetriNetUnfolder]: For 938948/939043 co-relation queries the response was YES. [2022-01-19 13:05:31,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134687 conditions, 13290 events. 4113/13290 cut-off events. For 938948/939043 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 139222 event pairs, 1619 based on Foata normal form. 3/12942 useless extension candidates. Maximal degree in co-relation 134259. Up to 3272 conditions per place. [2022-01-19 13:05:31,393 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 650 selfloop transitions, 44 changer transitions 175/940 dead transitions. [2022-01-19 13:05:31,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 882 places, 940 transitions, 25769 flow [2022-01-19 13:05:31,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-19 13:05:31,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2022-01-19 13:05:31,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 6496 transitions. [2022-01-19 13:05:31,397 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2022-01-19 13:05:31,397 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 6496 transitions. [2022-01-19 13:05:31,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 6496 transitions. [2022-01-19 13:05:31,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:31,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 6496 transitions. [2022-01-19 13:05:31,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 90.22222222222223) internal successors, (6496), 72 states have internal predecessors, (6496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:31,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 174.0) internal successors, (12702), 73 states have internal predecessors, (12702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:31,407 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 174.0) internal successors, (12702), 73 states have internal predecessors, (12702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:31,407 INFO L186 Difference]: Start difference. First operand has 871 places, 372 transitions, 7254 flow. Second operand 72 states and 6496 transitions. [2022-01-19 13:05:31,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 882 places, 940 transitions, 25769 flow [2022-01-19 13:05:38,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 814 places, 940 transitions, 23641 flow, removed 1024 selfloop flow, removed 68 redundant places. [2022-01-19 13:05:38,129 INFO L242 Difference]: Finished difference. Result has 878 places, 385 transitions, 7789 flow [2022-01-19 13:05:38,130 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=6957, PETRI_DIFFERENCE_MINUEND_PLACES=743, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=7789, PETRI_PLACES=878, PETRI_TRANSITIONS=385} [2022-01-19 13:05:38,130 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 721 predicate places. [2022-01-19 13:05:38,130 INFO L470 AbstractCegarLoop]: Abstraction has has 878 places, 385 transitions, 7789 flow [2022-01-19 13:05:38,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:38,131 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:38,131 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:38,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-19 13:05:38,131 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:38,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:38,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1998163687, now seen corresponding path program 23 times [2022-01-19 13:05:38,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:38,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412000314] [2022-01-19 13:05:38,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:38,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:38,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:38,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:38,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412000314] [2022-01-19 13:05:38,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412000314] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:38,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:38,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:05:38,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417365777] [2022-01-19 13:05:38,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:38,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:05:38,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:38,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:05:38,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:05:38,730 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:05:38,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 878 places, 385 transitions, 7789 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:38,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:38,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:05:38,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:02,284 INFO L129 PetriNetUnfolder]: 4280/13462 cut-off events. [2022-01-19 13:06:02,284 INFO L130 PetriNetUnfolder]: For 1169773/1169852 co-relation queries the response was YES. [2022-01-19 13:06:02,707 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148424 conditions, 13462 events. 4280/13462 cut-off events. For 1169773/1169852 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 141016 event pairs, 1753 based on Foata normal form. 8/13243 useless extension candidates. Maximal degree in co-relation 147991. Up to 5149 conditions per place. [2022-01-19 13:06:02,771 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 710 selfloop transitions, 41 changer transitions 183/1005 dead transitions. [2022-01-19 13:06:02,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 907 places, 1005 transitions, 26402 flow [2022-01-19 13:06:02,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 13:06:02,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 13:06:02,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7207 transitions. [2022-01-19 13:06:02,775 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5177442528735632 [2022-01-19 13:06:02,775 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7207 transitions. [2022-01-19 13:06:02,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7207 transitions. [2022-01-19 13:06:02,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:02,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7207 transitions. [2022-01-19 13:06:02,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 90.0875) internal successors, (7207), 80 states have internal predecessors, (7207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:02,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:02,787 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:02,787 INFO L186 Difference]: Start difference. First operand has 878 places, 385 transitions, 7789 flow. Second operand 80 states and 7207 transitions. [2022-01-19 13:06:02,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 907 places, 1005 transitions, 26402 flow [2022-01-19 13:06:11,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 850 places, 1005 transitions, 24334 flow, removed 997 selfloop flow, removed 57 redundant places. [2022-01-19 13:06:11,274 INFO L242 Difference]: Finished difference. Result has 921 places, 395 transitions, 8109 flow [2022-01-19 13:06:11,275 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=7377, PETRI_DIFFERENCE_MINUEND_PLACES=771, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=8109, PETRI_PLACES=921, PETRI_TRANSITIONS=395} [2022-01-19 13:06:11,275 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 764 predicate places. [2022-01-19 13:06:11,275 INFO L470 AbstractCegarLoop]: Abstraction has has 921 places, 395 transitions, 8109 flow [2022-01-19 13:06:11,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:11,275 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:11,275 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:11,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-19 13:06:11,276 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:11,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:11,276 INFO L85 PathProgramCache]: Analyzing trace with hash -229567281, now seen corresponding path program 24 times [2022-01-19 13:06:11,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:11,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523561596] [2022-01-19 13:06:11,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:11,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:11,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:11,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:11,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523561596] [2022-01-19 13:06:11,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523561596] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:11,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:11,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:06:11,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728467141] [2022-01-19 13:06:11,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:11,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:06:11,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:11,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:06:11,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:06:11,924 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:06:11,925 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 921 places, 395 transitions, 8109 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:11,925 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:11,925 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:06:11,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:31,820 INFO L129 PetriNetUnfolder]: 4474/13910 cut-off events. [2022-01-19 13:06:31,820 INFO L130 PetriNetUnfolder]: For 1114516/1114587 co-relation queries the response was YES. [2022-01-19 13:06:32,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151904 conditions, 13910 events. 4474/13910 cut-off events. For 1114516/1114587 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 144995 event pairs, 2893 based on Foata normal form. 6/13570 useless extension candidates. Maximal degree in co-relation 151450. Up to 3767 conditions per place. [2022-01-19 13:06:32,429 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 624 selfloop transitions, 43 changer transitions 154/892 dead transitions. [2022-01-19 13:06:32,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 940 places, 892 transitions, 23495 flow [2022-01-19 13:06:32,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 13:06:32,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 13:06:32,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7184 transitions. [2022-01-19 13:06:32,434 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5160919540229885 [2022-01-19 13:06:32,434 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7184 transitions. [2022-01-19 13:06:32,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7184 transitions. [2022-01-19 13:06:32,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:32,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7184 transitions. [2022-01-19 13:06:32,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.8) internal successors, (7184), 80 states have internal predecessors, (7184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:32,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:32,447 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:32,448 INFO L186 Difference]: Start difference. First operand has 921 places, 395 transitions, 8109 flow. Second operand 80 states and 7184 transitions. [2022-01-19 13:06:32,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 940 places, 892 transitions, 23495 flow [2022-01-19 13:06:41,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 872 places, 892 transitions, 22359 flow, removed 525 selfloop flow, removed 68 redundant places. [2022-01-19 13:06:41,476 INFO L242 Difference]: Finished difference. Result has 945 places, 407 transitions, 8649 flow [2022-01-19 13:06:41,476 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=7780, PETRI_DIFFERENCE_MINUEND_PLACES=793, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=8649, PETRI_PLACES=945, PETRI_TRANSITIONS=407} [2022-01-19 13:06:41,476 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 788 predicate places. [2022-01-19 13:06:41,476 INFO L470 AbstractCegarLoop]: Abstraction has has 945 places, 407 transitions, 8649 flow [2022-01-19 13:06:41,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:41,477 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:41,477 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:41,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-19 13:06:41,477 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:41,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:41,477 INFO L85 PathProgramCache]: Analyzing trace with hash 502877411, now seen corresponding path program 25 times [2022-01-19 13:06:41,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:41,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562960840] [2022-01-19 13:06:41,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:41,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:41,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:41,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562960840] [2022-01-19 13:06:41,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562960840] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:41,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:41,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:06:41,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342907004] [2022-01-19 13:06:41,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:41,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:06:41,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:41,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:06:41,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:06:41,995 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:06:41,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 945 places, 407 transitions, 8649 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:41,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:41,996 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:06:41,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:00,311 INFO L129 PetriNetUnfolder]: 4820/15406 cut-off events. [2022-01-19 13:07:00,311 INFO L130 PetriNetUnfolder]: For 1516034/1516142 co-relation queries the response was YES. [2022-01-19 13:07:00,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178010 conditions, 15406 events. 4820/15406 cut-off events. For 1516034/1516142 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 166668 event pairs, 989 based on Foata normal form. 6/15122 useless extension candidates. Maximal degree in co-relation 177543. Up to 5592 conditions per place. [2022-01-19 13:07:01,059 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 807 selfloop transitions, 66 changer transitions 175/1119 dead transitions. [2022-01-19 13:07:01,059 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 944 places, 1119 transitions, 32435 flow [2022-01-19 13:07:01,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-19 13:07:01,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-01-19 13:07:01,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 5448 transitions. [2022-01-19 13:07:01,062 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5218390804597701 [2022-01-19 13:07:01,062 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 5448 transitions. [2022-01-19 13:07:01,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 5448 transitions. [2022-01-19 13:07:01,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:01,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 5448 transitions. [2022-01-19 13:07:01,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 90.8) internal successors, (5448), 60 states have internal predecessors, (5448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:01,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 174.0) internal successors, (10614), 61 states have internal predecessors, (10614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:01,071 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 174.0) internal successors, (10614), 61 states have internal predecessors, (10614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:01,071 INFO L186 Difference]: Start difference. First operand has 945 places, 407 transitions, 8649 flow. Second operand 60 states and 5448 transitions. [2022-01-19 13:07:01,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 944 places, 1119 transitions, 32435 flow [2022-01-19 13:07:12,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 1119 transitions, 30255 flow, removed 1066 selfloop flow, removed 66 redundant places. [2022-01-19 13:07:12,283 INFO L242 Difference]: Finished difference. Result has 930 places, 438 transitions, 10071 flow [2022-01-19 13:07:12,283 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=8238, PETRI_DIFFERENCE_MINUEND_PLACES=819, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=10071, PETRI_PLACES=930, PETRI_TRANSITIONS=438} [2022-01-19 13:07:12,283 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 773 predicate places. [2022-01-19 13:07:12,283 INFO L470 AbstractCegarLoop]: Abstraction has has 930 places, 438 transitions, 10071 flow [2022-01-19 13:07:12,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:12,284 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:12,284 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:12,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-19 13:07:12,284 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:12,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:12,284 INFO L85 PathProgramCache]: Analyzing trace with hash -804140971, now seen corresponding path program 26 times [2022-01-19 13:07:12,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:12,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563162223] [2022-01-19 13:07:12,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:12,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:12,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:12,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:12,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563162223] [2022-01-19 13:07:12,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563162223] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:12,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:12,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:07:12,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233433705] [2022-01-19 13:07:12,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:12,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:07:12,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:12,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:07:12,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:07:12,887 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:07:12,887 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 930 places, 438 transitions, 10071 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:12,887 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:12,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:07:12,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:35,536 INFO L129 PetriNetUnfolder]: 5097/15333 cut-off events. [2022-01-19 13:07:35,536 INFO L130 PetriNetUnfolder]: For 1410461/1410528 co-relation queries the response was YES. [2022-01-19 13:07:36,076 INFO L84 FinitePrefix]: Finished finitePrefix Result has 179420 conditions, 15333 events. 5097/15333 cut-off events. For 1410461/1410528 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 160756 event pairs, 3884 based on Foata normal form. 4/14986 useless extension candidates. Maximal degree in co-relation 178961. Up to 4935 conditions per place. [2022-01-19 13:07:36,199 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 660 selfloop transitions, 38 changer transitions 132/901 dead transitions. [2022-01-19 13:07:36,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 973 places, 901 transitions, 25071 flow [2022-01-19 13:07:36,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 13:07:36,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 13:07:36,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7185 transitions. [2022-01-19 13:07:36,202 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5161637931034483 [2022-01-19 13:07:36,202 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7185 transitions. [2022-01-19 13:07:36,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7185 transitions. [2022-01-19 13:07:36,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:36,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7185 transitions. [2022-01-19 13:07:36,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.8125) internal successors, (7185), 80 states have internal predecessors, (7185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:36,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:36,214 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:36,214 INFO L186 Difference]: Start difference. First operand has 930 places, 438 transitions, 10071 flow. Second operand 80 states and 7185 transitions. [2022-01-19 13:07:36,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 973 places, 901 transitions, 25071 flow [2022-01-19 13:07:48,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 929 places, 901 transitions, 23555 flow, removed 711 selfloop flow, removed 44 redundant places. [2022-01-19 13:07:48,044 INFO L242 Difference]: Finished difference. Result has 1003 places, 451 transitions, 10279 flow [2022-01-19 13:07:48,044 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=9290, PETRI_DIFFERENCE_MINUEND_PLACES=850, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=10279, PETRI_PLACES=1003, PETRI_TRANSITIONS=451} [2022-01-19 13:07:48,044 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 846 predicate places. [2022-01-19 13:07:48,044 INFO L470 AbstractCegarLoop]: Abstraction has has 1003 places, 451 transitions, 10279 flow [2022-01-19 13:07:48,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:48,045 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:48,045 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:48,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-19 13:07:48,045 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:48,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:48,045 INFO L85 PathProgramCache]: Analyzing trace with hash 877269605, now seen corresponding path program 27 times [2022-01-19 13:07:48,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:48,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335900267] [2022-01-19 13:07:48,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:48,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:48,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:48,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:48,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335900267] [2022-01-19 13:07:48,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335900267] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:48,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:48,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:07:48,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401748084] [2022-01-19 13:07:48,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:48,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:07:48,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:48,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:07:48,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:07:48,721 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:07:48,721 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1003 places, 451 transitions, 10279 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:48,721 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:48,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:07:48,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:08:08,839 INFO L129 PetriNetUnfolder]: 5521/17422 cut-off events. [2022-01-19 13:08:08,839 INFO L130 PetriNetUnfolder]: For 1939927/1940047 co-relation queries the response was YES. [2022-01-19 13:08:09,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 213596 conditions, 17422 events. 5521/17422 cut-off events. For 1939927/1940047 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 191320 event pairs, 1596 based on Foata normal form. 8/17113 useless extension candidates. Maximal degree in co-relation 213099. Up to 6125 conditions per place. [2022-01-19 13:08:09,597 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 798 selfloop transitions, 73 changer transitions 156/1098 dead transitions. [2022-01-19 13:08:09,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 986 places, 1098 transitions, 32595 flow [2022-01-19 13:08:09,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 13:08:09,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 13:08:09,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 4113 transitions. [2022-01-19 13:08:09,599 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5372257053291536 [2022-01-19 13:08:09,599 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 4113 transitions. [2022-01-19 13:08:09,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 4113 transitions. [2022-01-19 13:08:09,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:08:09,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 4113 transitions. [2022-01-19 13:08:09,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 93.47727272727273) internal successors, (4113), 44 states have internal predecessors, (4113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:09,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 174.0) internal successors, (7830), 45 states have internal predecessors, (7830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:09,606 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 174.0) internal successors, (7830), 45 states have internal predecessors, (7830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:09,606 INFO L186 Difference]: Start difference. First operand has 1003 places, 451 transitions, 10279 flow. Second operand 44 states and 4113 transitions. [2022-01-19 13:08:09,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 986 places, 1098 transitions, 32595 flow [2022-01-19 13:08:24,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 921 places, 1098 transitions, 30209 flow, removed 1178 selfloop flow, removed 65 redundant places. [2022-01-19 13:08:24,961 INFO L242 Difference]: Finished difference. Result has 955 places, 486 transitions, 11830 flow [2022-01-19 13:08:24,962 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=9796, PETRI_DIFFERENCE_MINUEND_PLACES=878, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=11830, PETRI_PLACES=955, PETRI_TRANSITIONS=486} [2022-01-19 13:08:24,962 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 798 predicate places. [2022-01-19 13:08:24,962 INFO L470 AbstractCegarLoop]: Abstraction has has 955 places, 486 transitions, 11830 flow [2022-01-19 13:08:24,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:24,962 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:08:24,963 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:08:24,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-19 13:08:24,963 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:08:24,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:08:24,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1062122567, now seen corresponding path program 28 times [2022-01-19 13:08:24,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:08:24,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011245766] [2022-01-19 13:08:24,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:08:24,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:08:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:08:25,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:08:25,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:08:25,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011245766] [2022-01-19 13:08:25,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011245766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:08:25,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:08:25,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:08:25,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007003225] [2022-01-19 13:08:25,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:08:25,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:08:25,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:08:25,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:08:25,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:08:25,559 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:08:25,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 955 places, 486 transitions, 11830 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:25,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:08:25,560 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:08:25,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:08:47,867 INFO L129 PetriNetUnfolder]: 5551/16630 cut-off events. [2022-01-19 13:08:47,867 INFO L130 PetriNetUnfolder]: For 1616804/1616901 co-relation queries the response was YES. [2022-01-19 13:08:48,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 202448 conditions, 16630 events. 5551/16630 cut-off events. For 1616804/1616901 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 179090 event pairs, 2068 based on Foata normal form. 4/16264 useless extension candidates. Maximal degree in co-relation 201977. Up to 5822 conditions per place. [2022-01-19 13:08:48,636 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 1491 selfloop transitions, 96 changer transitions 204/1862 dead transitions. [2022-01-19 13:08:48,637 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1016 places, 1862 transitions, 59593 flow [2022-01-19 13:08:48,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 13:08:48,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 13:08:48,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7132 transitions. [2022-01-19 13:08:48,640 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5123563218390804 [2022-01-19 13:08:48,640 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7132 transitions. [2022-01-19 13:08:48,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7132 transitions. [2022-01-19 13:08:48,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:08:48,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7132 transitions. [2022-01-19 13:08:48,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.15) internal successors, (7132), 80 states have internal predecessors, (7132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:48,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:48,652 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:48,652 INFO L186 Difference]: Start difference. First operand has 955 places, 486 transitions, 11830 flow. Second operand 80 states and 7132 transitions. [2022-01-19 13:08:48,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1016 places, 1862 transitions, 59593 flow [2022-01-19 13:09:01,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 989 places, 1862 transitions, 56989 flow, removed 1253 selfloop flow, removed 27 redundant places. [2022-01-19 13:09:01,742 INFO L242 Difference]: Finished difference. Result has 1063 places, 499 transitions, 12081 flow [2022-01-19 13:09:01,742 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=10824, PETRI_DIFFERENCE_MINUEND_PLACES=910, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=12081, PETRI_PLACES=1063, PETRI_TRANSITIONS=499} [2022-01-19 13:09:01,743 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 906 predicate places. [2022-01-19 13:09:01,743 INFO L470 AbstractCegarLoop]: Abstraction has has 1063 places, 499 transitions, 12081 flow [2022-01-19 13:09:01,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:01,743 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:09:01,743 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:09:01,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-19 13:09:01,743 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:09:01,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:09:01,744 INFO L85 PathProgramCache]: Analyzing trace with hash -10922581, now seen corresponding path program 29 times [2022-01-19 13:09:01,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:09:01,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979039803] [2022-01-19 13:09:01,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:09:01,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:09:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:09:02,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:09:02,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:09:02,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979039803] [2022-01-19 13:09:02,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979039803] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:09:02,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:09:02,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:09:02,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063192036] [2022-01-19 13:09:02,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:09:02,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:09:02,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:09:02,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:09:02,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:09:02,340 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:09:02,341 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1063 places, 499 transitions, 12081 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:02,341 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:09:02,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:09:02,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:09:26,314 INFO L129 PetriNetUnfolder]: 5555/17141 cut-off events. [2022-01-19 13:09:26,314 INFO L130 PetriNetUnfolder]: For 1909204/1909316 co-relation queries the response was YES. [2022-01-19 13:09:27,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 216162 conditions, 17141 events. 5555/17141 cut-off events. For 1909204/1909316 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 186875 event pairs, 1931 based on Foata normal form. 8/16863 useless extension candidates. Maximal degree in co-relation 215635. Up to 6120 conditions per place. [2022-01-19 13:09:27,655 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 909 selfloop transitions, 76 changer transitions 225/1281 dead transitions. [2022-01-19 13:09:27,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1082 places, 1281 transitions, 39604 flow [2022-01-19 13:09:27,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 13:09:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 13:09:27,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7157 transitions. [2022-01-19 13:09:27,661 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5141522988505747 [2022-01-19 13:09:27,661 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7157 transitions. [2022-01-19 13:09:27,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7157 transitions. [2022-01-19 13:09:27,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:09:27,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7157 transitions. [2022-01-19 13:09:27,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.4625) internal successors, (7157), 80 states have internal predecessors, (7157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:27,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:27,678 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:27,678 INFO L186 Difference]: Start difference. First operand has 1063 places, 499 transitions, 12081 flow. Second operand 80 states and 7157 transitions. [2022-01-19 13:09:27,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1082 places, 1281 transitions, 39604 flow [2022-01-19 13:09:49,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1017 places, 1281 transitions, 37263 flow, removed 1155 selfloop flow, removed 65 redundant places. [2022-01-19 13:09:49,354 INFO L242 Difference]: Finished difference. Result has 1083 places, 504 transitions, 12275 flow [2022-01-19 13:09:49,354 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=11736, PETRI_DIFFERENCE_MINUEND_PLACES=938, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=12275, PETRI_PLACES=1083, PETRI_TRANSITIONS=504} [2022-01-19 13:09:49,354 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 926 predicate places. [2022-01-19 13:09:49,355 INFO L470 AbstractCegarLoop]: Abstraction has has 1083 places, 504 transitions, 12275 flow [2022-01-19 13:09:49,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:49,355 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:09:49,355 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:09:49,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-19 13:09:49,355 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:09:49,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:09:49,359 INFO L85 PathProgramCache]: Analyzing trace with hash 732249393, now seen corresponding path program 30 times [2022-01-19 13:09:49,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:09:49,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478770481] [2022-01-19 13:09:49,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:09:49,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:09:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:09:50,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:09:50,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:09:50,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478770481] [2022-01-19 13:09:50,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478770481] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:09:50,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:09:50,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 13:09:50,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214297033] [2022-01-19 13:09:50,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:09:50,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 13:09:50,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:09:50,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 13:09:50,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:09:50,010 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 13:09:50,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1083 places, 504 transitions, 12275 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:50,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:09:50,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 13:09:50,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-01-19 13:09:59,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 13:09:59,185 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 13:09:59,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-19 13:09:59,185 WARN L594 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantifier-free) to 42 known predicates. [2022-01-19 13:09:59,187 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-19 13:09:59,187 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-19 13:09:59,190 INFO L732 BasicCegarLoop]: Path program histogram: [35, 35, 30, 3, 3, 2, 1, 1] [2022-01-19 13:09:59,192 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 13:09:59,192 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 13:09:59,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 01:09:59 BasicIcfg [2022-01-19 13:09:59,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 13:09:59,194 INFO L158 Benchmark]: Toolchain (without parser) took 714984.57ms. Allocated memory was 354.4MB in the beginning and 12.8GB in the end (delta: 12.5GB). Free memory was 300.7MB in the beginning and 10.0GB in the end (delta: -9.7GB). Peak memory consumption was 3.3GB. Max. memory is 16.0GB. [2022-01-19 13:09:59,194 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 354.4MB. Free memory is still 318.1MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 13:09:59,194 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.33ms. Allocated memory is still 354.4MB. Free memory was 300.5MB in the beginning and 325.9MB in the end (delta: -25.4MB). Peak memory consumption was 17.2MB. Max. memory is 16.0GB. [2022-01-19 13:09:59,195 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.84ms. Allocated memory is still 354.4MB. Free memory was 325.9MB in the beginning and 324.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 13:09:59,195 INFO L158 Benchmark]: Boogie Preprocessor took 21.18ms. Allocated memory is still 354.4MB. Free memory was 324.9MB in the beginning and 322.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 13:09:59,195 INFO L158 Benchmark]: RCFGBuilder took 400.70ms. Allocated memory is still 354.4MB. Free memory was 322.8MB in the beginning and 306.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2022-01-19 13:09:59,195 INFO L158 Benchmark]: TraceAbstraction took 714258.95ms. Allocated memory was 354.4MB in the beginning and 12.8GB in the end (delta: 12.5GB). Free memory was 306.0MB in the beginning and 10.0GB in the end (delta: -9.7GB). Peak memory consumption was 3.4GB. Max. memory is 16.0GB. [2022-01-19 13:09:59,196 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 354.4MB. Free memory is still 318.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 268.33ms. Allocated memory is still 354.4MB. Free memory was 300.5MB in the beginning and 325.9MB in the end (delta: -25.4MB). Peak memory consumption was 17.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 30.84ms. Allocated memory is still 354.4MB. Free memory was 325.9MB in the beginning and 324.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 21.18ms. Allocated memory is still 354.4MB. Free memory was 324.9MB in the beginning and 322.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 400.70ms. Allocated memory is still 354.4MB. Free memory was 322.8MB in the beginning and 306.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 714258.95ms. Allocated memory was 354.4MB in the beginning and 12.8GB in the end (delta: 12.5GB). Free memory was 306.0MB in the beginning and 10.0GB in the end (delta: -9.7GB). Peak memory consumption was 3.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 42 known predicates. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 42 known predicates. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 42 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances [2022-01-19 13:09:59,207 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end CFG has 5 procedures, 246 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 714.1s, OverallIterations: 110, TraceHistogramMax: 1, PathProgramHistogramMax: 35, EmptinessCheckTime: 0.0s, AutomataDifference: 686.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28712 SdHoareTripleChecker+Valid, 42.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28712 mSDsluCounter, 159048 SdHoareTripleChecker+Invalid, 35.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 157496 mSDsCounter, 172 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 86103 IncrementalHoareTripleChecker+Invalid, 86275 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 172 mSolverCounterUnsat, 12871 mSDtfsCounter, 86103 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5151 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 4799 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74580 ImplicationChecksByTransitivity, 310.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12275occurred in iteration=109, InterpolantAutomatonStates: 3950, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 25.8s InterpolantComputationTime, 11420 NumberOfCodeBlocks, 11420 NumberOfCodeBlocksAsserted, 110 NumberOfCheckSat, 11310 ConstructedInterpolants, 0 QuantifiedInterpolants, 86292 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 110 InterpolantComputations, 110 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown