/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 09:45:47,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 09:45:47,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 09:45:47,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 09:45:47,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 09:45:47,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 09:45:47,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 09:45:47,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 09:45:47,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 09:45:47,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 09:45:47,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 09:45:47,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 09:45:47,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 09:45:47,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 09:45:47,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 09:45:47,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 09:45:47,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 09:45:47,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 09:45:47,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 09:45:47,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 09:45:47,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 09:45:47,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 09:45:47,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 09:45:47,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 09:45:47,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 09:45:47,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 09:45:47,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 09:45:47,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 09:45:47,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 09:45:47,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-24 09:45:47,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 09:45:47,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 09:45:47,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 09:45:47,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 09:45:47,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 09:45:47,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 09:45:47,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 09:45:47,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 09:45:47,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 09:45:47,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 09:45:47,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 09:45:47,512 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-VariableLbe.epf [2021-03-24 09:45:47,526 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 09:45:47,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 09:45:47,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 09:45:47,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 09:45:47,527 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 09:45:47,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 09:45:47,527 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 09:45:47,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 09:45:47,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 09:45:47,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 09:45:47,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 09:45:47,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 09:45:47,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 09:45:47,528 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 09:45:47,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 09:45:47,528 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 09:45:47,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 09:45:47,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 09:45:47,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 09:45:47,529 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 09:45:47,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 09:45:47,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 09:45:47,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 09:45:47,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 09:45:47,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 09:45:47,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 09:45:47,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 09:45:47,530 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 09:45:47,530 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 09:45:47,530 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 09:45:47,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 09:45:47,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 09:45:47,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 09:45:47,796 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 09:45:47,804 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 09:45:47,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/szymanski.i [2021-03-24 09:45:47,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2d095ec9/3caee4bd966c4f718c7eaa8d486c494f/FLAG545bee444 [2021-03-24 09:45:48,236 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 09:45:48,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i [2021-03-24 09:45:48,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2d095ec9/3caee4bd966c4f718c7eaa8d486c494f/FLAG545bee444 [2021-03-24 09:45:48,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2d095ec9/3caee4bd966c4f718c7eaa8d486c494f [2021-03-24 09:45:48,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 09:45:48,255 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 09:45:48,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 09:45:48,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 09:45:48,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 09:45:48,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 09:45:48" (1/1) ... [2021-03-24 09:45:48,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738bdd04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:45:48, skipping insertion in model container [2021-03-24 09:45:48,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 09:45:48" (1/1) ... [2021-03-24 09:45:48,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 09:45:48,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 09:45:48,372 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-24 09:45:48,522 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] [2021-03-24 09:45:48,531 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2021-03-24 09:45:48,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 09:45:48,544 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 09:45:48,561 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-24 09:45:48,574 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] [2021-03-24 09:45:48,585 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2021-03-24 09:45:48,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 09:45:48,643 INFO L208 MainTranslator]: Completed translation [2021-03-24 09:45:48,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:45:48 WrapperNode [2021-03-24 09:45:48,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 09:45:48,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 09:45:48,645 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 09:45:48,645 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 09:45:48,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:45:48" (1/1) ... [2021-03-24 09:45:48,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:45:48" (1/1) ... [2021-03-24 09:45:48,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 09:45:48,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 09:45:48,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 09:45:48,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 09:45:48,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:45:48" (1/1) ... [2021-03-24 09:45:48,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:45:48" (1/1) ... [2021-03-24 09:45:48,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:45:48" (1/1) ... [2021-03-24 09:45:48,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:45:48" (1/1) ... [2021-03-24 09:45:48,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:45:48" (1/1) ... [2021-03-24 09:45:48,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:45:48" (1/1) ... [2021-03-24 09:45:48,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:45:48" (1/1) ... [2021-03-24 09:45:48,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 09:45:48,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 09:45:48,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 09:45:48,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 09:45:48,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:45:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 09:45:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-24 09:45:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-03-24 09:45:48,756 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-03-24 09:45:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-24 09:45:48,756 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-24 09:45:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 09:45:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 09:45:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 09:45:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 09:45:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 09:45:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 09:45:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 09:45:48,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 09:45:48,757 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 09:45:49,008 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 09:45:49,009 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-03-24 09:45:49,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 09:45:49 BoogieIcfgContainer [2021-03-24 09:45:49,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 09:45:49,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 09:45:49,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 09:45:49,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 09:45:49,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 09:45:48" (1/3) ... [2021-03-24 09:45:49,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6794e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 09:45:49, skipping insertion in model container [2021-03-24 09:45:49,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 09:45:48" (2/3) ... [2021-03-24 09:45:49,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6794e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 09:45:49, skipping insertion in model container [2021-03-24 09:45:49,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 09:45:49" (3/3) ... [2021-03-24 09:45:49,014 INFO L111 eAbstractionObserver]: Analyzing ICFG szymanski.i [2021-03-24 09:45:49,018 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 09:45:49,020 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-24 09:45:49,021 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 09:45:49,037 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,038 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,038 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,038 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,038 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,038 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,038 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,038 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,039 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,039 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,039 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,039 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,039 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,039 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,039 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,039 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,040 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,040 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,040 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,040 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,040 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,040 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,040 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,041 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,041 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,041 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,041 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,041 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,041 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,041 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,041 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,042 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,042 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,042 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,042 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,042 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,042 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,042 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,043 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,043 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,043 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,043 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,043 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,043 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,043 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,043 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,043 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,044 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,044 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,044 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,044 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,044 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,045 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,045 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,046 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,046 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,046 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,046 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,046 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,046 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,046 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,046 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,046 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,048 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,048 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,048 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,048 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,048 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,048 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,048 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,049 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,050 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,050 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,050 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,051 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,051 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,051 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,052 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,052 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,055 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,055 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,055 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,055 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,055 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 09:45:49,059 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-24 09:45:49,071 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-24 09:45:49,083 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 09:45:49,084 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 09:45:49,084 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 09:45:49,084 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 09:45:49,084 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 09:45:49,084 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 09:45:49,084 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 09:45:49,084 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 09:45:49,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 109 transitions, 240 flow [2021-03-24 09:45:49,153 INFO L129 PetriNetUnfolder]: 21/109 cut-off events. [2021-03-24 09:45:49,153 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-24 09:45:49,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 109 events. 21/109 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 160 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2021-03-24 09:45:49,161 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 109 transitions, 240 flow [2021-03-24 09:45:49,164 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 97 transitions, 206 flow [2021-03-24 09:45:49,165 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 09:45:49,176 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 97 transitions, 206 flow [2021-03-24 09:45:49,179 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 97 transitions, 206 flow [2021-03-24 09:45:49,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 97 transitions, 206 flow [2021-03-24 09:45:49,209 INFO L129 PetriNetUnfolder]: 20/99 cut-off events. [2021-03-24 09:45:49,210 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 09:45:49,211 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 99 events. 20/99 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 153 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2021-03-24 09:45:49,217 INFO L142 LiptonReduction]: Number of co-enabled transitions 3528 [2021-03-24 09:45:50,203 INFO L154 LiptonReduction]: Checked pairs total: 2338 [2021-03-24 09:45:50,204 INFO L156 LiptonReduction]: Total number of compositions: 60 [2021-03-24 09:45:50,205 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1040 [2021-03-24 09:45:50,210 INFO L129 PetriNetUnfolder]: 5/27 cut-off events. [2021-03-24 09:45:50,211 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 09:45:50,211 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 09:45:50,211 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 09:45:50,211 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 09:45:50,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 09:45:50,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1595151328, now seen corresponding path program 1 times [2021-03-24 09:45:50,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 09:45:50,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664313443] [2021-03-24 09:45:50,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 09:45:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 09:45:50,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:45:50,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 09:45:50,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:45:50,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 09:45:50,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 09:45:50,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664313443] [2021-03-24 09:45:50,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 09:45:50,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 09:45:50,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071670436] [2021-03-24 09:45:50,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 09:45:50,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 09:45:50,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 09:45:50,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 09:45:50,363 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 169 [2021-03-24 09:45:50,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 49 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 09:45:50,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 09:45:50,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 169 [2021-03-24 09:45:50,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 09:45:50,401 INFO L129 PetriNetUnfolder]: 22/100 cut-off events. [2021-03-24 09:45:50,402 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-24 09:45:50,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 100 events. 22/100 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 277 event pairs, 2 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 120. Up to 18 conditions per place. [2021-03-24 09:45:50,403 INFO L132 encePairwiseOnDemand]: 163/169 looper letters, 7 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2021-03-24 09:45:50,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 134 flow [2021-03-24 09:45:50,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 09:45:50,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 09:45:50,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 413 transitions. [2021-03-24 09:45:50,411 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.814595660749507 [2021-03-24 09:45:50,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 413 transitions. [2021-03-24 09:45:50,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 413 transitions. [2021-03-24 09:45:50,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 09:45:50,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 413 transitions. [2021-03-24 09:45:50,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 09:45:50,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 09:45:50,421 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 09:45:50,422 INFO L185 Difference]: Start difference. First operand has 44 places, 49 transitions, 110 flow. Second operand 3 states and 413 transitions. [2021-03-24 09:45:50,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 134 flow [2021-03-24 09:45:50,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 126 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 09:45:50,425 INFO L241 Difference]: Finished difference. Result has 44 places, 49 transitions, 120 flow [2021-03-24 09:45:50,426 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=44, PETRI_TRANSITIONS=49} [2021-03-24 09:45:50,426 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2021-03-24 09:45:50,426 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 49 transitions, 120 flow [2021-03-24 09:45:50,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 09:45:50,427 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 09:45:50,427 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 09:45:50,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 09:45:50,427 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 09:45:50,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 09:45:50,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1146238324, now seen corresponding path program 1 times [2021-03-24 09:45:50,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 09:45:50,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574296003] [2021-03-24 09:45:50,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 09:45:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 09:45:50,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:45:50,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 09:45:50,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:45:50,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 09:45:50,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 09:45:50,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574296003] [2021-03-24 09:45:50,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 09:45:50,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 09:45:50,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632315507] [2021-03-24 09:45:50,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 09:45:50,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 09:45:50,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 09:45:50,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 09:45:50,455 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 169 [2021-03-24 09:45:50,456 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 49 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 09:45:50,456 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 09:45:50,456 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 169 [2021-03-24 09:45:50,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 09:45:50,469 INFO L129 PetriNetUnfolder]: 16/85 cut-off events. [2021-03-24 09:45:50,469 INFO L130 PetriNetUnfolder]: For 14/17 co-relation queries the response was YES. [2021-03-24 09:45:50,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 85 events. 16/85 cut-off events. For 14/17 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 213 event pairs, 2 based on Foata normal form. 6/77 useless extension candidates. Maximal degree in co-relation 101. Up to 11 conditions per place. [2021-03-24 09:45:50,470 INFO L132 encePairwiseOnDemand]: 165/169 looper letters, 6 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2021-03-24 09:45:50,470 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 136 flow [2021-03-24 09:45:50,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 09:45:50,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 09:45:50,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2021-03-24 09:45:50,472 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8067061143984221 [2021-03-24 09:45:50,472 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 409 transitions. [2021-03-24 09:45:50,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 409 transitions. [2021-03-24 09:45:50,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 09:45:50,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 409 transitions. [2021-03-24 09:45:50,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 09:45:50,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 09:45:50,474 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 09:45:50,475 INFO L185 Difference]: Start difference. First operand has 44 places, 49 transitions, 120 flow. Second operand 3 states and 409 transitions. [2021-03-24 09:45:50,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 136 flow [2021-03-24 09:45:50,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 49 transitions, 130 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 09:45:50,476 INFO L241 Difference]: Finished difference. Result has 45 places, 49 transitions, 124 flow [2021-03-24 09:45:50,476 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=45, PETRI_TRANSITIONS=49} [2021-03-24 09:45:50,476 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2021-03-24 09:45:50,476 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 124 flow [2021-03-24 09:45:50,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 09:45:50,477 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 09:45:50,477 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 09:45:50,477 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 09:45:50,477 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 09:45:50,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 09:45:50,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1977210654, now seen corresponding path program 1 times [2021-03-24 09:45:50,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 09:45:50,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492226780] [2021-03-24 09:45:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 09:45:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 09:45:50,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:45:50,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 09:45:50,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:45:50,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 09:45:50,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:45:50,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 09:45:50,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:45:50,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 09:45:50,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 09:45:50,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492226780] [2021-03-24 09:45:50,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 09:45:50,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 09:45:50,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801062149] [2021-03-24 09:45:50,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 09:45:50,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 09:45:50,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 09:45:50,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 09:45:50,521 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 169 [2021-03-24 09:45:50,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 09:45:50,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 09:45:50,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 169 [2021-03-24 09:45:50,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 09:45:50,635 INFO L129 PetriNetUnfolder]: 142/389 cut-off events. [2021-03-24 09:45:50,635 INFO L130 PetriNetUnfolder]: For 59/61 co-relation queries the response was YES. [2021-03-24 09:45:50,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 676 conditions, 389 events. 142/389 cut-off events. For 59/61 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1822 event pairs, 45 based on Foata normal form. 6/337 useless extension candidates. Maximal degree in co-relation 572. Up to 137 conditions per place. [2021-03-24 09:45:50,638 INFO L132 encePairwiseOnDemand]: 153/169 looper letters, 25 selfloop transitions, 8 changer transitions 24/83 dead transitions. [2021-03-24 09:45:50,638 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 83 transitions, 312 flow [2021-03-24 09:45:50,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 09:45:50,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 09:45:50,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 552 transitions. [2021-03-24 09:45:50,640 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6532544378698225 [2021-03-24 09:45:50,640 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 552 transitions. [2021-03-24 09:45:50,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 552 transitions. [2021-03-24 09:45:50,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 09:45:50,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 552 transitions. [2021-03-24 09:45:50,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 09:45:50,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 09:45:50,645 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 09:45:50,645 INFO L185 Difference]: Start difference. First operand has 45 places, 49 transitions, 124 flow. Second operand 5 states and 552 transitions. [2021-03-24 09:45:50,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 83 transitions, 312 flow [2021-03-24 09:45:50,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 83 transitions, 309 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 09:45:50,648 INFO L241 Difference]: Finished difference. Result has 51 places, 53 transitions, 201 flow [2021-03-24 09:45:50,648 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=201, PETRI_PLACES=51, PETRI_TRANSITIONS=53} [2021-03-24 09:45:50,649 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2021-03-24 09:45:50,649 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 53 transitions, 201 flow [2021-03-24 09:45:50,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 09:45:50,649 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 09:45:50,649 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 09:45:50,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 09:45:50,650 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 09:45:50,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 09:45:50,650 INFO L82 PathProgramCache]: Analyzing trace with hash -993536904, now seen corresponding path program 2 times [2021-03-24 09:45:50,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 09:45:50,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85950415] [2021-03-24 09:45:50,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 09:45:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 09:45:50,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:45:50,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 09:45:50,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:45:50,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 09:45:50,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:45:50,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 09:45:50,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 09:45:50,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 09:45:50,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 09:45:50,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85950415] [2021-03-24 09:45:50,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 09:45:50,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 09:45:50,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295364012] [2021-03-24 09:45:50,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 09:45:50,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 09:45:50,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 09:45:50,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 09:45:50,709 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 169 [2021-03-24 09:45:50,710 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 53 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 09:45:50,710 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 09:45:50,710 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 169 [2021-03-24 09:45:50,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 09:45:50,789 INFO L129 PetriNetUnfolder]: 146/377 cut-off events. [2021-03-24 09:45:50,789 INFO L130 PetriNetUnfolder]: For 212/217 co-relation queries the response was YES. [2021-03-24 09:45:50,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 905 conditions, 377 events. 146/377 cut-off events. For 212/217 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1768 event pairs, 40 based on Foata normal form. 14/365 useless extension candidates. Maximal degree in co-relation 855. Up to 156 conditions per place. [2021-03-24 09:45:50,790 INFO L132 encePairwiseOnDemand]: 153/169 looper letters, 0 selfloop transitions, 0 changer transitions 82/82 dead transitions. [2021-03-24 09:45:50,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 82 transitions, 393 flow [2021-03-24 09:45:50,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 09:45:50,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 09:45:50,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 563 transitions. [2021-03-24 09:45:50,792 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6662721893491125 [2021-03-24 09:45:50,792 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 563 transitions. [2021-03-24 09:45:50,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 563 transitions. [2021-03-24 09:45:50,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 09:45:50,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 563 transitions. [2021-03-24 09:45:50,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.6) internal successors, (563), 5 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 09:45:50,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 09:45:50,795 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 09:45:50,795 INFO L185 Difference]: Start difference. First operand has 51 places, 53 transitions, 201 flow. Second operand 5 states and 563 transitions. [2021-03-24 09:45:50,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 82 transitions, 393 flow [2021-03-24 09:45:50,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 82 transitions, 359 flow, removed 16 selfloop flow, removed 1 redundant places. [2021-03-24 09:45:50,798 INFO L241 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2021-03-24 09:45:50,798 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2021-03-24 09:45:50,798 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2021-03-24 09:45:50,798 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2021-03-24 09:45:50,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 09:45:50,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 09:45:50,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 09:45:50 BasicIcfg [2021-03-24 09:45:50,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 09:45:50,802 INFO L168 Benchmark]: Toolchain (without parser) took 2546.84 ms. Allocated memory was 255.9 MB in the beginning and 463.5 MB in the end (delta: 207.6 MB). Free memory was 234.8 MB in the beginning and 398.7 MB in the end (delta: -163.9 MB). Peak memory consumption was 43.4 MB. Max. memory is 16.0 GB. [2021-03-24 09:45:50,802 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 09:45:50,803 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.56 ms. Allocated memory was 255.9 MB in the beginning and 381.7 MB in the end (delta: 125.8 MB). Free memory was 234.8 MB in the beginning and 345.4 MB in the end (delta: -110.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-24 09:45:50,803 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.86 ms. Allocated memory is still 381.7 MB. Free memory was 345.4 MB in the beginning and 343.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 09:45:50,803 INFO L168 Benchmark]: Boogie Preprocessor took 24.45 ms. Allocated memory is still 381.7 MB. Free memory was 343.8 MB in the beginning and 342.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 09:45:50,804 INFO L168 Benchmark]: RCFGBuilder took 298.26 ms. Allocated memory is still 381.7 MB. Free memory was 342.3 MB in the beginning and 317.1 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-24 09:45:50,804 INFO L168 Benchmark]: TraceAbstraction took 1790.45 ms. Allocated memory was 381.7 MB in the beginning and 463.5 MB in the end (delta: 81.8 MB). Free memory was 316.6 MB in the beginning and 398.7 MB in the end (delta: -82.1 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.0 GB. [2021-03-24 09:45:50,806 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 388.56 ms. Allocated memory was 255.9 MB in the beginning and 381.7 MB in the end (delta: 125.8 MB). Free memory was 234.8 MB in the beginning and 345.4 MB in the end (delta: -110.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 40.86 ms. Allocated memory is still 381.7 MB. Free memory was 345.4 MB in the beginning and 343.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 24.45 ms. Allocated memory is still 381.7 MB. Free memory was 343.8 MB in the beginning and 342.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 298.26 ms. Allocated memory is still 381.7 MB. Free memory was 342.3 MB in the beginning and 317.1 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1790.45 ms. Allocated memory was 381.7 MB in the beginning and 463.5 MB in the end (delta: 81.8 MB). Free memory was 316.6 MB in the beginning and 398.7 MB in the end (delta: -82.1 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1024.6ms, 83 PlacesBefore, 44 PlacesAfterwards, 97 TransitionsBefore, 49 TransitionsAfterwards, 3528 CoEnabledTransitionPairs, 4 FixpointIterations, 12 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 9 ChoiceCompositions, 60 TotalNumberOfCompositions, 2338 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1846, positive: 1824, positive conditional: 0, positive unconditional: 1824, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1368, positive: 1355, positive conditional: 0, positive unconditional: 1355, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1368, positive: 1355, positive conditional: 0, positive unconditional: 1355, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1846, positive: 469, positive conditional: 0, positive unconditional: 469, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 1368, unknown conditional: 0, unknown unconditional: 1368] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - PositiveResult [Line: 802]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 745]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 88 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1718.2ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 307.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1123.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 84 SDtfs, 50 SDslu, 28 SDs, 0 SdLazy, 138 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 96.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=201occurred in iteration=3, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.9ms SsaConstructionTime, 40.7ms SatisfiabilityAnalysisTime, 140.5ms InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 92 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...